Edgar Filing: CIENA CORP

e10vq

UNITED STATES
SECURITIES AND EXCHANGE COMMISSION

Washington, DC 20549

FORM 10-Q

(Mark one)


þ		QUARTERLY REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the quarterly period ended April 30, 2011


o		TRANSITION REPORT PURSUANT TO SECTION 13 OR 15(d) OF THE SECURITIES EXCHANGE ACT OF 1934

For the transition period from to .

Commission file number: 0-21969

Ciena Corporation

(Exact name of registrant as specified in its charter)


Delaware		23-2725311
(State or other jurisdiction of		(I.R.S. Employer Identification No.)
incorporation or organization)


1201 Winterson Road, Linthicum, MD		21090
(Address of Principal Executive Offices)		(Zip Code)

(410) 865-8500
(Registrant’s telephone number, including area code)

Indicate by check mark whether the registrant: (1) has filed all reports required to be filed by Section 13 or 15(d) of the Securities Exchange Act of 1934 during the preceding 12 months (or for such shorter period that the registrant was required to file such reports), and (2) has been subject to such filing requirements for the past 90 days. YES þ NO o

Indicate by check mark whether the registrant has submitted electronically and posted on its corporate Web site, if any, every Interactive Data File required to be submitted and posted pursuant to Rule 405 of Regulation S-T during the preceding 12 months (or for such shorter period that the registrant was required to submit and post such files). YES þ NO o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer or a smaller reporting company. See the definition of “large accelerated filer,” “accelerated filer” and “smaller reporting company” in Rule 12b-2 of the Exchange Act.


Large accelerated filer þ	Accelerated filer o	Non-accelerated filer o	Smaller reporting company o
		(Do not check if a smaller reporting company)

Indicate by check mark whether the registrant is a shell company (as determined in Rule 12b-2 of the Exchange Act). YES o NO þ

Indicate the number of shares outstanding of each of the issuer’s classes of common stock, as of the latest practicable date:



	Class			Outstanding at June 3, 2011
	common stock, $.01 par value			95,681,685

CIENA CORPORATION

INDEX

FORM 10-Q


	PAGE
	NUMBER
PART I — FINANCIAL INFORMATION

Item 1. Financial Statements		3

Condensed Consolidated Statements of Operations for the Quarters and Six Months Ended April 30, 2010 and April 30, 2011		3

Condensed Consolidated Balance Sheets at October 31, 2010 and April 30, 2011		4

Condensed Consolidated Statements of Cash Flows for the Six Months Ended April 30, 2010 and April 30, 2011		5

Notes to Condensed Consolidated Financial Statements		6

Item 2. Management’s Discussion and Analysis of Financial Condition and Results of Operations		28

Item 3. Quantitative and Qualitative Disclosures About Market Risk		50

Item 4. Controls and Procedures		51

PART II — OTHER INFORMATION

Item 1. Legal Proceedings		51

Item 1A. Risk Factors		52

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds		61

Item 3. Defaults Upon Senior Securities		61

Item 4. Removed and Reserved		61

Item 5. Other Information		61

Item 6. Exhibits		62

Signatures		63
EX-10.1
EX-31.1
EX-31.2
EX-32.1
EX-32.2
EX-101 INSTANCE DOCUMENT
EX-101 SCHEMA DOCUMENT
EX-101 CALCULATION LINKBASE DOCUMENT
EX-101 LABELS LINKBASE DOCUMENT
EX-101 PRESENTATION LINKBASE DOCUMENT

PART I — FINANCIAL INFORMATION


*Item 1.*		*Financial Statements*

CIENA CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS
(in thousands, except per share data)
(unaudited)


	Quarter Ended April 30,						Six Months Ended April 30,
	2010			2011			2010			2011
Revenue:
Products	$	206,420		$	336,026		$	355,474		$	688,453
Services		47,051			81,868			73,873			162,749

Total revenue		253,471			417,894			429,347			851,202


Cost of goods sold:
Products		118,221			202,665			194,890			417,066
Services		30,308			49,396			49,355			99,797

Total cost of goods sold		148,529			252,061			244,245			516,863

Gross profit		104,942			165,833			185,102			334,339

Operating expenses:
Research and development		71,142			99,624			121,175			195,414
Selling and marketing		45,328			61,768			79,565			118,860
General and administrative		21,503			32,480			34,266			70,794
Acquisition and integration costs		39,221			10,741			66,252			34,926
Amortization of intangible assets		17,121			13,674			23,102			42,458
Restructuring costs		1,849			3,164			1,828			4,686
Change in fair value of contingent consideration		—			—			—			(3,289	)

Total operating expenses		196,164			221,451			326,188			463,849

Loss from operations		(91,222	)		(55,618	)		(141,086	)		(129,510	)
Interest and other income (loss), net		3,748			4,229			2,975			10,494
Interest expense		(4,113	)		(9,406	)		(5,941	)		(18,956	)

Loss before income taxes		(91,587	)		(60,795	)		(144,052	)		(137,972	)
Provision (benefit) for income taxes		(1,578	)		1,891			(710	)		3,770

Net loss	$	(90,009	)	$	(62,686	)	$	(143,342	)	$	(141,742	)

Basic net loss per common share	$	(0.97	)	$	(0.66	)	$	(1.55	)	$	(1.49	)

Diluted net loss per potential common share	$	(0.97	)	$	(0.66	)	$	(1.55	)	$	(1.49	)

Weighted average basic common shares outstanding		92,614			95,360			92,590			94,928

Weighted average dilutive potential common shares outstanding		92,614			95,360			92,590			94,928

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

CIENA CORPORATION
CONDENSED CONSOLIDATED BALANCE SHEETS
(in thousands, except share data)

(unaudited)


	October 31,			April 30,
	2010			2011
ASSETS

Current assets:
Cash and cash equivalents	$	688,687		$	506,840
Accounts receivable, net		343,582			391,330
Inventories		261,619			285,696
Prepaid expenses and other		147,680			139,536

Total current assets		1,441,568			1,323,402
Long-term investments		—			50,098
Equipment, furniture and fixtures, net		120,294			126,399
Other intangible assets, net		426,412			369,775
Other long-term assets		129,819			135,210

Total assets	$	2,118,093		$	2,004,884


LIABILITIES AND STOCKHOLDERS’ EQUITY

Current liabilities:
Accounts payable	$	200,617		$	178,747
Accrued liabilities		193,994			190,618
Deferred revenue		75,334			99,187

Total current liabilities		469,945			468,552
Long-term deferred revenue		29,715			24,861
Other long-term obligations		16,435			19,232
Convertible notes payable		1,442,705			1,442,534

Total liabilities		1,958,800			1,955,179

Commitments and contingencies
Stockholders’ equity:
Preferred stock — par value $0.01; 20,000,000 shares authorized; zero shares issued and outstanding		—			—
Common stock — par value $0.01; 290,000,000 shares authorized; 94,060,300 and 95,659,218 shares issued and outstanding		941			957
Additional paid-in capital		5,702,137			5,728,532
Accumulated other comprehensive income		1,062			6,805
Accumulated deficit		(5,544,847	)		(5,686,589	)

Total stockholders’ equity		159,293			49,705

Total liabilities and stockholders’ equity	$	2,118,093		$	2,004,884

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

CIENA CORPORATION
CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS
(in thousands)
(unaudited)


	Six Months Ended April 30,
	2010			2011
Cash flows from operating activities:
Net loss	$	(143,342	)	$	(141,742	)
Adjustments to reconcile net loss to net cash used in operating activities:
Amortization of premium (discount) on marketable securities		575			(12	)
Change in fair value of embedded redemption feature		(6,640	)		(9,160	)
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements		13,543			29,367
Share-based compensation costs		16,799			18,886
Amortization of intangible assets		33,618			56,637
Provision for inventory excess and obsolescence		7,100			6,413
Provision for warranty		8,847			5,646
Other		1,037			3,474
Changes in assets and liabilities, net of effect of acquisition:
Accounts receivable		(53,255	)		(48,351	)
Inventories		(38,250	)		(30,490	)
Prepaid expenses and other		4,944			963
Accounts payable, accruals and other obligations		84,831			(26,078	)
Deferred revenue		(3,043	)		18,999

Net cash used in operating activities		(73,236	)		(115,448	)

Cash flows used in investing activities:
Payments for equipment, furniture, fixtures and intellectual property		(18,275	)		(29,420	)
Restricted cash		(9,046	)		(11,853	)
Purchase of available for sale securities		(63,591	)		(49,894	)
Proceeds from maturities of available for sale securities		424,841			—
Proceeds from sales of available for sale securities		179,380			—
Acquisition of business		(711,932	)		—
Receipt of contingent consideration related to business acquisition		—			16,394

Net cash used in investing activities		(198,623	)		(74,773	)

Cash flows from financing activities:
Proceeds from issuance of 4.0% convertible notes payable, net		369,660			—
Proceeds from issuance of common stock and warrants		831			7,525

Net cash provided by financing activities		370,491			7,525

Effect of exchange rate changes on cash and cash equivalents		(108	)		849
Net increase (decrease) in cash and cash equivalents		98,632			(182,696	)
Cash and cash equivalents at beginning of period		485,705			688,687

Cash and cash equivalents at end of period	$	584,229		$	506,840


Supplemental disclosure of cash flow information
Cash paid during the period for interest	$	2,560		$	16,411
Cash paid (refunded) during the period for income taxes, net	$	1,294		$	(231	)
Non-cash investing and financing activities
Purchase of equipment in accounts payable	$	649		$	3,242
Debt issuance costs in accrued liabilities	$	5,021		$	—
Fixed assets acquired under capital leases	$	—		$	1,401

The accompanying notes are an integral part of these Condensed Consolidated Financial Statements.

CIENA CORPORATION
NOTES TO CONDENSED CONSOLIDATED FINANCIAL STATEMENTS
(unaudited)

(1) INTERIM FINANCIAL STATEMENTS

The interim financial statements included herein for Ciena Corporation (“Ciena”) have been prepared by Ciena, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission. In the opinion of management, financial statements included in this report reflect all normal recurring adjustments that Ciena considers necessary for the fair statement of the results of operations for the interim periods covered and of the financial position of Ciena at the date of the interim balance sheets. Certain information and footnote disclosures normally included in the annual financial statements prepared in accordance with generally accepted accounting principles have been condensed or omitted pursuant to such rules and regulations. The October 31, 2010 Condensed Consolidated Balance Sheet was derived from audited financial statements, but does not include all disclosures required by accounting principles generally accepted in the United States of America. However, Ciena believes that the disclosures are adequate to understand the information presented. The operating results for interim periods are not necessarily indicative of the operating results for the entire year. These financial statements should be read in conjunction with Ciena’s audited consolidated financial statements and notes thereto included in Ciena’s annual report on Form 10-K for the fiscal year ended October 31, 2010.

On March 19, 2010, Ciena completed its acquisition of substantially all of the optical networking and Carrier Ethernet assets of Nortel’s Metro Ethernet Networks (“MEN Business”). Ciena’s results of operations for the second quarter and six-month period ended April 30, 2010 reflect the operations of the MEN Business beginning on the March 19, 2010 acquisition date. See Note 3 below.

Ciena has a 52 or 53 week fiscal year, which ends on the Saturday nearest to the last day of October of each year. For purposes of financial statement presentation, each fiscal year is described as having ended on October 31, and each fiscal quarter is described as having ended on January 31, April 30 and July 31 of each fiscal year.

(2) SIGNIFICANT ACCOUNTING POLICIES

Use of Estimates

The preparation of the financial statements and related disclosures in conformity with accounting principles generally accepted in the United States requires management to make estimates and judgments that affect the amounts reported in the Condensed Consolidated Financial Statements and accompanying notes. Estimates are used for purchase accounting, bad debts, valuation of inventories and investments, recoverability of intangible assets, other long-lived assets, income taxes, warranty obligations, restructuring liabilities, derivatives, contingencies and litigation. Ciena bases its estimates on historical experience and assumptions that it believes are reasonable. Actual results may differ materially from management’s estimates.

Cash and Cash Equivalents

Ciena considers all highly liquid investments purchased with maturities of three months or less to be cash equivalents. Restricted cash collateralizing letters of credit are included in other current assets and other long-term assets depending upon the duration of the restriction.

Investments

Ciena’s investments are classified as available-for-sale and are reported at fair value, with unrealized gains and losses recorded in accumulated other comprehensive income. Ciena recognizes losses when it determines that declines in the fair value of its investments, below their cost basis, are other-than-temporary. In determining whether a decline in fair value is other-than-temporary, Ciena considers various factors including market price (when available), investment ratings, the financial condition and near-term prospects of the investee, the length of time and the extent to which the fair value has been less than Ciena’s cost basis, and its intent and ability to hold the investment until maturity or for a period of time sufficient to allow for any anticipated recovery in market value. Ciena considers all marketable debt securities that it expects to convert to cash within one year or less to be short-term investments. All others are considered long-term investments.

Ciena has certain minority equity investments in privately held technology companies that are classified as other assets. These investments are carried at cost because Ciena owns less than 20% of the voting equity and does not have the ability to exercise significant influence over these companies. These investments involve a high degree of risk as the markets for the technologies or products manufactured by these

companies are usually early stage at the time of Ciena’s investment and such markets may never be significant. Ciena could lose its entire investment in some or all of these companies. Ciena monitors these investments for impairment and makes appropriate reductions in carrying values when necessary.

Inventories

Inventories are stated at the lower of cost or market, with cost computed using standard cost, which approximates actual cost, on a first-in, first-out basis. Ciena records a provision for excess and obsolete inventory when an impairment has been identified.

Segment Reporting

Ciena’s chief operating decision maker, its chief executive officer, evaluates performance and allocates resources based on multiple factors, including segment profit (loss) information for the following product categories: (i) Packet-Optical Transport; (ii) Packet-Optical Switching; (iii) Carrier Ethernet Service Delivery; and (iv) Software and Services. Operating segments are defined as components of an enterprise: that engage in business activities which may earn revenue and incur expense; for which discrete financial information is available; and for which such information is evaluated regularly by the chief operating decision maker for purposes of allocating resources and assessing performance. Ciena considers the four product categories above to be its operating segments for reporting purposes. See Note 18.

Long-lived Assets

Long-lived assets include: equipment, furniture and fixtures; intangible assets; and maintenance spares. Ciena tests long-lived assets for impairment whenever triggering events or changes in circumstances indicate that the assets’ carrying amount is not recoverable from its undiscounted cash flows. An impairment loss is measured as the amount by which the carrying amount of the asset or asset group exceeds its fair value. Ciena’s long-lived assets are assigned to asset groups which represent the lowest level for which cash flows can be identified.

Equipment, Furniture and Fixtures

Equipment, furniture and fixtures are recorded at cost. Depreciation and amortization are computed using the straight-line method over useful lives of two years to five years for equipment, furniture and fixtures and the shorter of useful life or lease term for leasehold improvements.

Qualifying internal use software and website development costs incurred during the application development stage that consist primarily of outside services and purchased software license costs, are capitalized and amortized straight-line over the estimated useful lives of two years to five years.

Intangible Assets

Ciena has recorded finite-lived intangible assets as a result of several acquisitions. Finite-lived intangible assets are carried at cost less accumulated amortization. Amortization is computed using the straight-line method over the expected economic lives of the respective assets, from nine months to seven years, which approximates the use of intangible assets.

Maintenance Spares

Maintenance spares are recorded at cost. Spares usage cost is expensed ratably over four years.

Concentrations

Substantially all of Ciena’s cash and cash equivalents are maintained at two major U.S. financial institutions. The majority of Ciena’s cash equivalents consist of money market funds. Deposits held with banks may exceed the amount of insurance provided on such deposits. Generally, these deposits may be redeemed upon demand and, therefore, management believes that they bear minimal risk.

Historically, a large percentage of Ciena’s revenue has been the result of sales to a small number of communications service providers. Consolidation among Ciena’s customers has increased this concentration. Consequently, Ciena’s accounts receivable are concentrated among these customers. See Notes 7 and 18 below.

Additionally, Ciena’s access to certain materials or components is dependent upon sole or limited source suppliers. The inability of any supplier to fulfill Ciena’s supply requirements could affect future results. Ciena relies on a small number of contract manufacturers to perform the majority of the manufacturing for its products. If Ciena cannot effectively manage these manufacturers and forecast future demand, or if they fail to deliver products or components on time, Ciena’s business and results of operations may suffer.

Revenue Recognition

Ciena recognizes revenue when all of the following criteria are met: persuasive evidence of an arrangement exists; delivery has occurred or services have been rendered; the price to the buyer is fixed or determinable; and collectibility is reasonably assured. Customer purchase agreements and customer purchase orders are generally used to determine the existence of an arrangement. Shipping documents and evidence of customer acceptance, when applicable, are used to verify delivery or services rendered. Ciena assesses whether the price is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to refund or adjustment. Ciena assesses collectibility based primarily on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history. Revenue for maintenance services is generally deferred and recognized ratably over the period during which the services are to be performed.

Ciena applies the percentage of completion method to long-term arrangements where it is required to undertake significant production, customizations or modification engineering, and reasonable and reliable estimates of revenue and cost are available. Utilizing the percentage of completion method, Ciena recognizes revenue based on the ratio of actual costs incurred to date to total estimated costs expected to be incurred. In instances that do not meet the percentage of completion method criteria, recognition of revenue is deferred until there are no uncertainties regarding customer acceptance.

Software revenue is recognized when persuasive evidence of an arrangement exists, delivery has occurred, the fee is fixed or determinable, and collectibility is probable. In instances where final acceptance criteria of the software is specified by the customer, revenue is deferred until there are no uncertainties regarding customer acceptance.

Ciena limits the amount of revenue recognition for delivered elements to the amount that is not contingent on the future delivery of products or services, future performance obligations or subject to customer-specified return or refund privileges.

Accounting for multiple element arrangements entered into prior to fiscal 2011

Arrangements with customers may include multiple deliverables, including any combination of equipment, services and software. If multiple element arrangements include software or software-related elements that are essential to the equipment, Ciena allocates the arrangement fee among separate units of accounting. Multiple element arrangements that include software are separated into more than one unit of accounting if the functionality of the delivered element(s) is not dependent on the undelivered element(s), there is vendor-specific objective evidence (“VSOE”) of the fair value of the undelivered element(s), and general revenue recognition criteria related to the delivered element(s) have been met. The amount of product and services revenue recognized is affected by Ciena’s judgments as to whether an arrangement includes multiple elements and, if so, whether VSOE of fair value exists. VSOE is established based on Ciena’s standard pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, Ciena requires that a substantial majority of the selling prices for a product or service fall within a reasonably narrow pricing range. Changes to the elements in an arrangement and Ciena’s ability to establish VSOE for those elements could affect the timing of revenue recognition. For all other multiple element arrangements, Ciena separates the elements into more than one unit of accounting if the delivered element(s) have value to the customer on a stand-alone basis, objective and reliable evidence of fair value exists for the undelivered element(s), and delivery of the undelivered element(s) is probable and substantially in Ciena’s control. Revenue is allocated to each unit of accounting based on the relative fair value of each accounting unit or using the residual method if objective evidence of fair value does not exist for the delivered element(s). The revenue recognition criteria described above are applied to each separate unit of accounting. If these criteria are not met, revenue is deferred until the criteria are met or the last element has been delivered.

Accounting for multiple element arrangements entered into or materially modified in fiscal 2011

In October 2009, the Financial Accounting Standards Board (“FASB”) amended the accounting standard for revenue recognition with multiple deliverables which provided guidance on how the arrangement fee should be allocated and allows the use of management’s best estimate of selling price (“BESP”) for individual elements of an arrangement when VSOE or third-party evidence (“TPE”) is unavailable. Additionally, it eliminates the residual method of revenue recognition in accounting for multiple deliverable arrangements. The FASB also amended the accounting guidance for revenue arrangements with software elements to exclude from the scope of the software revenue recognition guidance, tangible products that contain both software and non-software components that function together to deliver the product’s essential functionality.

Ciena adopted the new accounting guidance on a prospective basis for arrangements entered into or materially modified on or after November 1, 2010. Under the new guidance, Ciena separates elements into more than one unit of accounting if the delivered element(s) have value to the customer on a stand-alone basis, and delivery of the undelivered element(s) is probable and substantially in Ciena’s control. Therefore, the new guidance allows for deliverables, for which revenue was previously deferred due to an absence of fair value, to be separated and recognized as revenue as delivered. Also, because the residual method has been eliminated, discounts offered by Ciena are allocated to all deliverables, rather than to the delivered element(s). Ciena’s adoption of the new guidance for revenue arrangements changed the accounting for certain Ciena products that consist of hardware and software components, in which these components together provided the product’s essential functionality. For arrangements involving these products entered into prior to fiscal 2011, Ciena recognized revenue based on software revenue recognition guidance.

Revenue for multiple element arrangements is allocated to each unit of accounting based on the relative selling price of each delivered element, with revenue recognized when the revenue recognition criteria are met for each delivered element. Ciena determines the selling price for each deliverable based upon the selling price hierarchy for multiple-deliverable arrangements. Under this hierarchy, Ciena uses VSOE of selling price, if it exists, or TPE of selling price if VSOE does not exist. If neither VSOE nor TPE of selling price exists for a deliverable, Ciena uses its BESP for that deliverable.

VSOE is established based on Ciena’s standard pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, which exists across certain of Ciena’s service offerings, Ciena requires that a substantial majority of the selling prices for a product or service fall within a reasonably narrow pricing range. Ciena has been unable to establish TPE of selling price because its go-to-market strategy differs from that of others in its markets, and the extent of customization and differentiated features and functions varies among comparable products or services from its peers. Ciena determines BESP based upon management-approved pricing guidelines, which consider multiple factors including the type of product or service, gross margin objectives, competitive and market conditions, and the go-to-market strategy; all of which can affect pricing practices.

Historically, for arrangements with multiple elements, Ciena was typically able to establish fair value for undelivered elements and so Ciena applied the residual method. Assuming the adoption of the accounting guidance above on a prospective basis for arrangements entered into or materially modified on or after November 1, 2009, the effect on revenue recognized for the six months ended April 30, 2010 would not have been materially different.

Warranty Accruals

Ciena provides for the estimated costs to fulfill customer warranty obligations upon the recognition of the related revenue. Estimated warranty costs include estimates for material costs, technical support labor costs and associated overhead. The warranty liability is included in cost of goods sold and determined based upon actual warranty cost experience, estimates of component failure rates and management’s industry experience. Ciena’s sales contracts do not permit the right of return of product by the customer after the product has been accepted.

Accounts Receivable, Net

Ciena’s allowance for doubtful accounts is based on its assessment, on a specific identification basis, of the collectibility of customer accounts. Ciena performs ongoing credit evaluations of its customers and generally has not required collateral or other forms of security from its customers. In determining the appropriate balance for Ciena’s allowance for doubtful accounts, management considers each individual customer account receivable in order to determine collectibility. In doing so, management considers creditworthiness, payment history, account activity and communication with such customer. If a customer’s financial condition changes, Ciena may be required to record an allowance for doubtful accounts, which would negatively affect its results of operations.

Research and Development

Ciena charges all research and development costs to expense as incurred. Types of expense incurred in research and development include employee compensation, prototype, consulting, depreciation, facility costs and information technologies.

Advertising Costs

Ciena expenses all advertising costs as incurred.

Legal Costs

Ciena expenses legal costs associated with litigation defense as incurred.

Share-Based Compensation Expense

Ciena measures and recognizes compensation expense for share-based awards based on estimated fair values on the date of grant. Ciena estimates the fair value of each option-based award on the date of grant using the Black-Scholes option-pricing model. This model is affected by Ciena’s stock price as well as estimates regarding a number of variables including expected stock price volatility over the expected term of the award and projected employee stock option exercise behaviors. Ciena estimates the fair value of each share-based award based on the fair value of the underlying common stock on the date of grant. In each case, Ciena only recognizes expense to its consolidated statement of operations for those options or shares that are expected ultimately to vest. Ciena uses two attribution methods to record expense, the straight-line method for grants with service-based vesting and the graded-vesting method, which considers each performance period or tranche separately, for all other awards. See Note 16 below.

Income Taxes

Ciena accounts for income taxes using an asset and liability approach that recognizes deferred tax assets and liabilities for the expected future tax consequences attributable to differences between the carrying amounts of assets and liabilities for financial reporting purposes and their respective tax bases, and for operating loss and tax credit carryforwards. In estimating future tax consequences, Ciena considers all expected future events other than the enactment of changes in tax laws or rates. Valuation allowances are provided, if, based upon the weight of the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized.

In the ordinary course of business, transactions occur for which the ultimate outcome may be uncertain. In addition, tax authorities periodically audit Ciena’s income tax returns. These audits examine significant tax filing positions, including the timing and amounts of deductions and the allocation of income tax expenses among tax jurisdictions. Ciena is currently under audit in India for 2007. Management does not expect the outcome of this audit to have a material adverse effect on the Company’s consolidated financial position, result of operations or cash flows. Ciena’s major tax jurisdictions and the earliest open tax years are as follows: United States (2007), United Kingdom (2005), Canada (2005) and India (2007). However, limited adjustments can be made to Federal tax returns in earlier years in order to reduce net operating loss carryforwards. Ciena classifies interest and penalties related to uncertain tax positions as a component of income tax expense. All of the uncertain tax positions, if recognized, would decrease the effective income tax rate.

Ciena has not provided U.S. deferred income taxes on the cumulative unremitted earnings of its non-U.S. affiliates as it plans to permanently reinvest cumulative unremitted foreign earnings outside the U.S. and it is not practicable to determine the unrecognized deferred income taxes. These cumulative unremitted foreign earnings relate to ongoing operations in foreign jurisdictions and are required to fund foreign operations, capital expenditures, and any expansion requirements.

Ciena recognizes windfall tax benefits associated with the exercise of stock options or release of restricted stock units directly to stockholders’ equity only when realized. A windfall tax benefit occurs when the actual tax benefit realized by Ciena upon an employee’s disposition of a share-based award exceeds the deferred tax asset, if any, associated with the award that Ciena had recorded. When assessing whether a tax benefit relating to share-based compensation has been realized, Ciena follows the tax law “with-and-without” method. Under the with-and-without method, the windfall is considered realized and recognized for financial statement purposes only when an incremental benefit is provided after considering all other tax benefits including Ciena’s net operating losses. The with-and-without method results in the windfall from share-based compensation awards always being effectively the last tax benefit to be considered. Consequently, the windfall attributable to share-based compensation will not be considered realized in instances where Ciena’s net operating loss carryover (that is unrelated to windfalls) is sufficient to offset the current year’s taxable income before considering the effects of current-year windfalls.

Loss Contingencies

Ciena is subject to the possibility of various losses arising in the ordinary course of business. These may relate to disputes, litigation and other legal actions. Ciena considers the likelihood of loss or the incurrence of a liability, as well as Ciena’s ability to reasonably estimate the amount of loss, in determining loss contingencies. An estimated loss contingency is accrued when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. Ciena regularly evaluates current information to determine whether any accruals should be adjusted and whether new accruals are required.

Fair Value of Financial Instruments

The carrying value of Ciena’s cash and cash equivalents, accounts receivable, accounts payable, and accrued liabilities, approximates fair market value due to the relatively short period of time to maturity. For information related to the fair value of Ciena’s convertible notes, see Note 14 below.

Fair value for the measurement of financial assets and liabilities is defined as the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants at the measurement date. As such, fair value is a market-based measurement that should be determined based on assumptions that market participants would use in pricing an asset or liability. Ciena utilizes a valuation hierarchy for disclosure of the inputs for fair value measurement. This hierarchy prioritizes the inputs into three broad levels as follows:

	•		Level 1 inputs are unadjusted quoted prices in active markets for identical assets or liabilities;

	•		Level 2 inputs are quoted prices for identical or similar assets or liabilities in less active markets or model-derived valuations in which significant inputs are observable for the asset or liability, either directly or indirectly through market corroboration, for substantially the full term of the financial instrument;

	•		Level 3 inputs are unobservable inputs based on Ciena’s assumptions used to measure assets and liabilities at fair value.

By distinguishing between inputs that are observable in the marketplace, and therefore more objective, and those that are unobservable and therefore more subjective, the hierarchy is designed to indicate the relative reliability of the fair value measurements. A financial asset or liability’s classification within the hierarchy is determined based on the lowest level input that is significant to the fair value measurement.

Restructuring

From time to time, Ciena takes actions to align its workforce, facilities and operating costs with perceived market opportunities and business conditions. Ciena implements these restructuring plans and incurs the associated liability concurrently. Generally accepted accounting principles require that a liability for the cost associated with an exit or disposal activity be recognized in the period in which the liability is incurred, except for one-time employee termination benefits related to a service period of more than 60 days, which are accrued over the service period. See Note 4 below.

Foreign Currency

Some of Ciena’s foreign branch offices and subsidiaries use the U.S. dollar as their functional currency, because Ciena, as the U.S. parent entity, exclusively funds the operations of these branch offices and subsidiaries. For those subsidiaries using the local currency as their functional currency, assets and liabilities are translated at exchange rates in effect at the balance sheet date, and the statement of operations is translated at a monthly average rate. Resulting translation adjustments are recorded directly to a separate component of stockholders’ equity. Where the monetary assets and liabilities are transacted in a currency other than the entity’s functional currency, re-measurement adjustments are recorded in other income. The net gain (loss) on foreign currency re-measurement and exchange rate changes is immaterial for separate financial statement presentation.

Derivatives

Ciena’s 4.0% convertible senior notes include a redemption feature that is accounted for as a separate embedded derivative. The embedded redemption feature is recorded at fair value on a recurring basis and these changes are included in interest and other income, net on the Condensed Consolidated Statement of Operations.

From time to time, Ciena uses foreign currency forward contracts to reduce variability in certain forecasted non US-dollar denominated operating expenses. Generally, these derivatives have maturities of twelve months or less and are designated as cash flow hedges.

Any net gain or loss associated with the ineffectiveness of the hedging instrument is reported in interest and other income, net. See Note 13 below.

Computation of Basic Net Income (Loss) per Common Share and Diluted Net Income (Loss) per Dilutive Potential Common Share

Ciena calculates basic earnings per share (EPS) by dividing earnings attributable to common stock by the weighted-average number of common shares outstanding for the period. Diluted EPS includes other potential dilutive common stock that would occur if securities or other contracts to issue common stock were exercised or converted into common stock. Ciena uses a dual presentation of basic and diluted EPS on the face of its income statement. A reconciliation of the numerator and denominator used for the basic and diluted EPS computations is set forth in Note 15.

Software Development Costs

Ciena develops software for sale to its customers. Generally accepted accounting principles require the capitalization of certain software development costs that are incurred subsequent to the date technological feasibility is established and prior to the date the product is generally available for sale. The capitalized cost is then amortized straight-line over the estimated life of the product. Ciena defines technological feasibility as being attained at the time a working model is completed. To date, the period between Ciena achieving technological feasibility and the general availability of such software has been short, and software development costs qualifying for capitalization have been insignificant. Accordingly, Ciena has not capitalized any software development costs.

(3) BUSINESS COMBINATIONS

Acquisition of MEN Business

On March 19, 2010, Ciena completed its acquisition of the MEN Business. Ciena acquired the MEN Business in an effort to strengthen its technology leadership position in next-generation, converged optical Ethernet networking, accelerate the execution of its corporate and research and development strategies and enable Ciena to better compete with larger equipment vendors. The acquisition expands Ciena’s geographic reach, customer relationships, and portfolio of network solutions.

In accordance with the agreements for the acquisition, the $773.8 million aggregate purchase price was subsequently adjusted downward by $80.6 million based upon the amount of net working capital transferred to Ciena at closing. As a result, Ciena paid $693.2 million in cash for the purchase of the MEN Business.

In connection with the acquisition, Ciena entered into an agreement with Nortel to lease the “Lab 10” building on Nortel’s Carling Campus in Ottawa, Canada (the “Carling lease”) for a term of ten years. The lease agreement contained a provision that allowed Nortel to reduce the term of the lease, and in exchange, Ciena could receive a payment of up to $33.5 million. This amount was placed into escrow by Nortel in accordance with the acquisition agreements. The fair value of this contingent refund right of $16.4 million was recorded as a reduction to the consideration paid, resulting in a purchase price of $676.8 million.

On October 19, 2010, Nortel issued a public announcement that it had entered into a sale agreement of its Carling campus with Public Works and Government Services Canada (PWGSC) and had been directed to exercise its early termination rights under the Carling lease, shortening the lease term from ten years to five years. As a result, and based on this change in circumstances and expected outcome probability, during the fourth quarter of fiscal 2010 Ciena recorded an unrealized gain of $13.8 million resulting in a fair value of $30.2 million for the contingent consideration right. During the first quarter of fiscal 2011, Ciena received notice of early termination from Nortel and the corresponding payment of the $33.5 million described above, resulting in a gain of $3.3 million.

During fiscal 2010, Ciena incurred $101.4 million in transaction, consulting and third party service fees, $8.5 million in restructuring expense, and an additional $12.4 million in costs primarily related to purchases of capitalized information technology equipment. During the first six months of fiscal 2011, Ciena incurred $34.9 million in transaction, consulting and third party service fees, $4.7 million in restructuring expense, and an additional $7.0 million in costs primarily related to purchases of capitalized information technology equipment.

The following table summarizes the final allocation related to the MEN Business based on the estimated fair value of the acquired assets and assumed liabilities (in thousands):


Unbilled receivables	$	7,136
Inventories		146,272
Prepaid expenses and other		32,517
Other long-term assets		21,924
Equipment, furniture and fixtures		41,213
Developed technology		218,774
In-process research and development		11,000
Customer relationships, outstanding purchase orders and contracts		260,592
Trade name		2,000
Deferred revenue		(28,086	)
Accrued liabilities		(33,845	)
Other long-term obligations		(2,644	)

Total purchase price allocation	$	676,853

Unbilled receivables represent unbilled claims for which Ciena will invoice customers upon its completion of the acquired projects.

Under the acquisition method of accounting, Ciena revalued the acquired finished goods inventory to fair value, which was determined to be most appropriately recognized as the estimated selling price less the sum of (a) costs of disposal, and (b) a reasonable profit allowance for Ciena’s selling effort.

Prepaid expenses and other include product demonstration units used to support research and development projects and indemnification assets related to uncertain tax contingencies acquired and recorded as part of other long-term obligations. Other long-term assets represent spares used to support customer maintenance commitments.

Developed technology represents purchased technology that had reached technological feasibility and for which development had been completed as of the date of the acquisition. Developed technology will be amortized on a straight line basis over its estimated useful lives of two to seven years.

In-process research and development represents development projects that had not reached technological feasibility at the time of the acquisition. This in-process research and development was completed during the fourth quarter of fiscal 2010 and is being amortized over the period of seven years. Expenditures to complete the in-process research and development were expensed as incurred.

Customer relationships, outstanding purchase orders and contracts represent agreements with existing customers of the MEN Business. These intangible assets are expected to have estimated useful lives of nine months to seven years, with the exception of $14.6 million related to a contract asset for acquired in-process projects to be billed by Ciena and recognized as a reduction in revenue. As of April 30, 2011, Ciena has billed $13.4 million of these contract assets. The remaining $1.2 million will be billed during the remainder of fiscal 2011. Trade name represents acquired product trade names that are expected to have a useful life of nine months.

Deferred revenue represents obligations assumed by Ciena to provide maintenance support services for which payment for such services was already made to Nortel.

Accrued liabilities represent assumed warranty obligations, other customer contract obligations, and certain employee benefit plans. Other long-term obligations represent uncertain tax contingencies.

The following unaudited pro forma financial information summarizes the results of operations for the period indicated as if Ciena’s acquisition of the MEN Business had been completed as of the beginning of the period presented. These pro forma amounts (in thousands) do not purport to be indicative of the results that would have actually been obtained if the acquisition occurred as of the beginning of the periods presented or that may be obtained in the future.


	Quarter Ended			Six Months Ended
	April 30,			April 30,
	2010			2010
Pro forma revenue	$	351,248		$	783,160

Pro forma net loss	$	(160,420	)	$	(384,790	)

(4) RESTRUCTURING COSTS

Ciena has committed to certain restructuring actions principally affecting Ciena’s North America global product group and EMEA’s global field and supply chain organizations. On November 16, 2010, Ciena announced a headcount reduction affecting approximately 50 employees in North America related to this restructuring plan. The action in North America resulted in a restructuring charge of $0.9 million and the previously announced EMEA action resulted in a restructuring charge of $1.0 million in the first six months of fiscal 2011. To consolidate Ciena’s global distribution centers and related operations, on February 28, 2011, Ciena proposed changes in its distribution model that may affect 50 to 60 roles related to its supply chain operations and workforce in Monkstown, Northern Ireland. Execution of any specific reorganization or headcount reduction is subject to local legal requirements, including notification and consultation processes with employees and employee representatives. This action resulted in a restructuring charge of $2.8 million in the first six months of fiscal 2011. Ciena expects this action to result in an additional restructuring charge in the range of $1.0 million to $2.0 million during the remainder of fiscal 2011. The following table sets forth the activity and balance of the restructuring liability accounts for the six months ended April 30, 2011 (in thousands):


				Consolidation
	Workforce			of excess
	reduction			facilities			Total
Balance at October 31, 2010	$	1,576		$	6,392		$	7,968
Additional liability recorded		4,686			—			4,686
Cash payments		(3,084	)		(622	)		(3,706	)

Balance at April 30, 2011	$	3,178		$	5,770		$	8,948

Current restructuring liabilities	$	3,178		$	1,196		$	4,374

Non-current restructuring liabilities	$	—		$	4,574		$	4,574

The following table sets forth the activity and balance of the restructuring liability accounts for the six months ended April 30, 2010 (in thousands):


				Consolidation
	Workforce			of excess
	reduction			facilities			Total
Balance at October 31, 2009	$	170		$	9,435		$	9,605
Additional liability recorded		1,828			—			1,828
Cash payments		(101	)		(1,525	)		(1,626	)

Balance at April 30, 2010	$	1,897		$	7,910		$	9,807

Current restructuring liabilities	$	1,897		$	1,373		$	3,270

Non-current restructuring liabilities	$	—		$	6,537		$	6,537

(5) MARKETABLE SECURITIES

As of the date indicated, long-term investments are comprised of the following (in thousands):


	April 30, 2011
			Gross Unrealized		Gross Unrealized		Estimated Fair
	Amortized Cost		Gains		Losses		Value
U.S. government obligations	$	49,906	$	192	$	—	$	50,098

	$	49,906	$	192	$	—	$	50,098


Included in long-term investments		49,906		192		—		50,098

	$	49,906	$	192	$	—	$	50,098

The following table summarizes final legal maturities of debt investments at April 30, 2011 (in thousands):


	Amortized		Estimated
	Cost		Fair Value
Less than one year	$	—	$	—
Due in 1-2 years		49,906		50,098

	$	49,906	$	50,098

At October 31, 2010, Ciena did not have any investments in marketable debt securities.

(6) FAIR VALUE MEASUREMENTS

As of the date indicated, the following table summarizes the fair value of assets that are recorded at fair value on a recurring basis (in thousands):


	April 30, 2011
	Level 1		Level 2		Level 3		Total
Assets:
U.S. government obligations	$	50,098	$	—	$	—	$	50,098
Foreign currency forward contracts		—		277		—		277
Embedded redemption feature		—		—		13,380		13,380

Total assets measured at fair value	$	50,098	$	277	$	13,380	$	63,755

As of the date indicated, the assets above were presented on Ciena’s Condensed Consolidated Balance Sheet as follows (in thousands):


	April 30, 2011
	Level 1		Level 2		Level 3		Total
Assets:
Prepaid expenses and other	$	—	$	277	$	—	$	277
Long-term investments		50,098		—		—		50,098
Other long-term assets		—		—		13,380		13,380

Total assets measured at fair value	$	50,098	$	277	$	13,380	$	63,755

Ciena’s Level 3 assets included in other long-term assets reflect the embedded redemption feature contained within Ciena’s 4.0% convertible senior notes. See Note 14 below. The embedded redemption feature is bifurcated from Ciena’s 4.0% convertible senior notes using the “with-and-without” approach. As such, the total value of the embedded redemption feature is calculated as the difference between the value of the 4.0% convertible senior notes (the “Hybrid Instrument”) and the value of an identical instrument without the embedded redemption feature (the “Host Instrument”). Both the Host Instrument and the Hybrid Instrument are valued using a modified binomial model. The modified binomial model utilizes a risk free interest rate, an implied volatility of Ciena’s stock, the recovery rates of bonds and the implied default intensity of the 4.0% convertible senior notes.

As of the dates indicated, the following table sets forth, in thousands, the reconciliation of changes in fair value measurements of Level 3 assets:


	Level 3
Balance at October 31, 2010	$	34,415
Issuances		—
Settlements		(30,195	)
Changes in unrealized gain (loss)		9,160
Transfers into Level 3		—
Transfers out of Level 3		—

Balance at April 30, 2011	$	13,380

(7) ACCOUNTS RECEIVABLE

As of October 31, 2010 and April 30, 2011, no customers accounted for greater than 10% of net trade accounts receivable. Allowance for doubtful accounts was $0.1 million and $0.7 million as of October 31, 2010 and April 30, 2011, respectively. Ciena has not historically experienced a significant amount of bad debt expense.

(8) INVENTORIES

As of the dates indicated, inventories are comprised of the following (in thousands):


	October 31,			April 30,
	2010			2011
Raw materials	$	30,569		$	40,106
Work-in-process		6,993			8,445
Finished goods		177,994			197,636
Deferred cost of goods sold		76,830			69,216

		292,386			315,403
Provision for excess and obsolescence		(30,767	)		(29,707	)

	$	261,619		$	285,696

Ciena writes down its inventory for estimated obsolescence or unmarketable inventory equal to the difference between the cost of inventory and the estimated net realizable value based on assumptions about future demand and market conditions. During the first six months of fiscal 2011, Ciena recorded a provision for excess and obsolescence of $6.4 million, primarily related to changes in forecasted sales for certain products. Deductions from the provision for excess and obsolete inventory relate to disposal activities.

The following table summarizes the activity in Ciena’s reserve for excess and obsolete inventory for the periods indicated (in thousands):


	Balance at
Six months ended	beginning of						Balance at
April 30,	period		Provisions		Disposals		end of period
2010	$	24,002	$	7,100	$	3,105	$	27,997
2011	$	30,767	$	6,413	$	7,473	$	29,707

(9) PREPAID EXPENSES AND OTHER

As of the dates indicated, prepaid expenses and other are comprised of the following (in thousands):


	October 31,		April 30,
	2010		2011
Prepaid VAT and other taxes	$	46,352	$	41,948
Deferred deployment expense		6,918		9,610
Product demonstration equipment, net		29,449		46,269
Prepaid expenses		15,087		11,098
Restricted cash		12,994		22,774
Contingent consideration		30,195		—
Other non-trade receivables		6,685		7,837

	$	147,680	$	139,536

Prepaid expenses and other as of April 30, 2011 include $46.3 million related to product demonstration equipment, net. Depreciation of product demonstration equipment was $4.5 million for the first six months of fiscal 2011.

(10) EQUIPMENT, FURNITURE AND FIXTURES

As of the dates indicated, equipment, furniture and fixtures are comprised of the following (in thousands):


	October 31,			April 30,
	2010			2011
Equipment, furniture and fixtures	$	360,908		$	391,890
Leasehold improvements		49,595			52,130

		410,503			444,020
Accumulated depreciation and amortization		(290,209	)		(317,621	)

	$	120,294		$	126,399

Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements was $13.5 million and $24.9 million for the first six months of fiscal 2010 and 2011, respectively.

(11) OTHER INTANGIBLE ASSETS

As of the dates indicated, other intangible assets are comprised of the following (in thousands):


	October 31,							April 30,
	2010							2011
	Gross		Accumulated			Net		Gross		Accumulated			Net
	Intangible		Amortization			Intangible		Intangible		Amortization			Intangible
Developed technology	$	417,833	$	(186,129	)	$	231,704	$	417,833	$	(210,261	)	$	207,572
Patents and licenses		45,388		(45,167	)		221		45,388		(45,237	)		151
Customer relationships, covenants not to compete, outstanding purchase orders and contracts		323,573		(129,086	)		194,487		323,573		(161,521	)		162,052

Total other intangible assets	$	786,794	$	(360,382	)	$	426,412	$	786,794	$	(417,019	)	$	369,775

The amortization of finite-lived other intangible assets was $33.6 million and $56.6 million for the first six months of fiscal 2010 and 2011, respectively. Expected future amortization of finite-lived other intangible assets for the fiscal years indicated is as follows (in thousands):


Period ended October 31,
2011 (remaining six months)	$	40,032
2012		73,564
2013		71,145
2014		56,987
2015		52,714
Thereafter		75,333

	$	369,775

(12) OTHER BALANCE SHEET DETAILS

As of the dates indicated, other long-term assets are comprised of the following (in thousands):


	October 31,		April 30,
	2010		2011
Maintenance spares inventory, net	$	53,654	$	50,582
Deferred debt issuance costs, net		28,853		26,149
Embedded redemption feature		4,220		13,380
Restricted cash		37,796		39,869
Other		5,296		5,230

	$	129,819	$	135,210

Deferred debt issuance costs are amortized using the straight line method, which approximates the effect of the effective interest rate method, through the maturity of the related debt. Amortization of debt issuance costs, which is included in interest expense, was $1.5 million and $2.7 million during the first six months of fiscal 2010 and fiscal 2011, respectively.

As of the dates indicated, accrued liabilities are comprised of the following (in thousands):


	October 31,		April 30,
	2010		2011
Warranty	$	54,372	$	47,252
Compensation, payroll related tax and benefits		39,391		50,312
Vacation		20,412		27,028
Current restructuring liabilities		2,784		4,374
Interest payable		4,345		4,357
Other		72,690		57,295

	$	193,994	$	190,618

The following table summarizes the activity in Ciena’s accrued warranty for the fiscal periods indicated (in thousands):


										Balance at
Six months ended	Beginning									end of
April 30,	Balance		Acquired		Provisions		Settlements			period
2010	$	40,196		26,000		8,847		(10,362	)	$	64,681
2011	$	54,372		-		5,646		(12,766	)	$	47,252

During the first quarter of fiscal 2010, Ciena recorded an adjustment to reduce its warranty liability and cost of goods sold by $3.3 million, to correct an overstatement of warranty expenses related to prior periods. The adjustment related to an error in the methodology of computing the annual failure rate used to calculate the warranty accrual. There was no tax impact as a result of this adjustment. Ciena believes this adjustment is not material to its financial statements for prior annual or interim periods.

As a result of the substantial completion of integration activities related to the MEN Acquisition, Ciena consolidated certain support operations and processes during the first quarter of fiscal 2011, resulting in a reduction in costs to service future warranty obligations. As a result of the lower expected costs, Ciena reduced its warranty liability by $6.9 million, which had the effect of reducing the provisions in the table above.

As of the dates indicated, deferred revenue is comprised of the following (in thousands):


	October 31,			April 30,
	2010			2011
Products	$	31,187		$	39,001
Services		73,862			85,047

		105,049			124,048
Less current portion		(75,334	)		(99,187	)

Long-term deferred revenue	$	29,715		$	24,861

(13) FOREIGN CURRENCY FORWARD CONTRACTS

From time to time, Ciena uses foreign currency forward contracts to reduce variability in certain forecasted non-US dollar denominated operating expenses. Generally, these derivatives have maturities of 12 months or less and are designated as cash flow hedges. Ciena considers several factors when evaluating hedges of its forecasted foreign currency exposures, such as significance of the exposure, offsetting economic exposures, potential costs of hedging, and the potential for hedge ineffectiveness. Ciena does not enter into derivative transactions for purposes other than hedging economic exposures. During the second quarter of fiscal 2011, Ciena entered into forward contracts to reduce the variability in its Canadian Dollar and Indian Rupee denominated operating expenses which principally relate to the Company’s research and development activities. These derivative contracts have been designated as cash flow hedges and are reported on Ciena’s Balance Sheet as derivative assets or liabilities as shown in the table below (in thousands):


														Total
Derivatives Designated as Cash					Derivative Asset					Derivative Liability				Derivative Asset
Flow Hedging Instruments	Notional Amount*				Fair Value					Fair Value				Fair Value as of:
	April 30,		April 30,		April 30,		April 30,			April 30,		April 30,		April 30,		April 30,
	2010		2011		2010		2011			2010		2011		2010		2011
Receive INR / Pay USD	$	—	$	5,259	$	—	$	28		$	—	$	—	$	—	$	28
Receive CAD / Pay USD	$	—	$	12,674	$	—	$	249		$	—	$	—	$	—	$	249

Total Fair Value					$	—	$	277	⁽¹⁾	$	—	$	—	$	—	$	277


		*Notional amounts are computed at the contract exchange rate.

		⁽¹⁾ Amount is included within prepaid expenses and other on the Condensed Consolidated Balance Sheet.

At the inception of the cash flow hedge and on an ongoing basis, Ciena assesses the hedging relationship to determine if the forward contracts have been effective in offsetting changes in cash flows attributable to changes in the relevant foreign currency exchange rate during the hedging period. The effective portion of the derivative’s gain or loss is initially reported as a component of accumulated other comprehensive income (loss), and upon the occurrence of the forecasted transaction, is subsequently reclassified to the operating expense line item to which the hedged transaction relates. Ciena records the net gain or loss associated with any ineffective portion of the hedging instruments in interest and other income, net. The amounts deferred in other comprehensive income and recorded on the balance sheet and ineffective amounts recorded in other income (in thousands) are shown in the table below:


	Effective Portion
	Quarter Ended April 30,				Six Months Ended April 30,
Line Item in Condensed Consolidated Balance Sheet	2010		2011		2010		2011
Accumulated other comprehensive income	$	—	$	277	$	—	$	277


	Ineffective Portion
	Quarter Ended April 30,				Six Months Ended April 30,
Line Item in Condensed Consolidated Statement of Operations	2010		2011		2010		2011
Other income, net	$	—	$	—	$	—	$	—

	$	—	$	—	$	—	$	—


	Gain Reclassified to Condensed Consolidated Statement of Operations
	Quarter Ended April 30,				Six Months Ended April 30,
Line Item in Condensed Consolidated Statement of Operations	2010		2011		2010		2011
Research and development	$	—	$	71	$	—	$	71

	$	—	$	71	$	—	$	71

(14) CONVERTIBLE NOTES PAYABLE

The following table sets forth, in thousands, the carrying value and the estimated current fair value of Ciena’s outstanding convertible notes:


	April 30, 2011
Description	Carrying Value		Fair Value
0.25% Convertible Senior Notes due May 1, 2013	$	216,210	$	221,210
4.0% Convertible Senior Notes due March 15, 2015 ⁽¹⁾		376,324		586,172
0.875% Convertible Senior Notes due June 15, 2017		500,000		496,563
3.75% Convertible Senior Notes due October 15, 2018		350,000		561,094

	$	1,442,534	$	1,865,039


		⁽¹⁾Includes unamortized bond premium related to embedded redemption feature

The fair value reported above is based on the quoted market price for the notes on the date above.

(15) EARNINGS (LOSS) PER SHARE CALCULATION

The following table (in thousands except per share amounts) is a reconciliation of the numerator and denominator of the basic net income

(loss) per common share (“Basic EPS”) and the diluted net income (loss) per potential common share (“Diluted EPS”). Basic EPS is computed using the weighted average number of common shares outstanding. Diluted EPS is computed using the weighted average number of (i) common shares outstanding, (ii) shares issuable upon vesting of restricted stock units, (iii) shares issuable upon exercise of outstanding stock options, employee stock purchase plan options and warrants using the treasury stock method; and (iv) shares underlying Ciena’s outstanding convertible notes.


Numerator	Quarter Ended April 30,						Six Months Ended April 30,
	2010			2011			2010			2011
Net loss	$	(90,009	)	$	(62,686	)	$	(143,342	)	$	(141,742	)


Denominator	Quarter Ended April 30,				Six Months Ended April 30,
	2010		2011		2010		2011
Basic weighted average shares outstanding		92,614		95,360		92,590		94,928

Dilutive weighted average shares outstanding		92,614		95,360		92,590		94,928


EPS	Quarter Ended April 30,						Six Months Ended April 30,
	2010			2011			2010			2011
Basic EPS	$	(0.97	)	$	(0.66	)	$	(1.55	)	$	(1.49	)

Diluted EPS	$	(0.97	)	$	(0.66	)	$	(1.55	)	$	(1.49	)

The following table summarizes the weighted average shares excluded from the calculation of the denominator for Basic and Diluted EPS due to their anti-dilutive effect for the fiscal years indicated (in thousands):


	Quarter Ended April 30,				Six Months Ended April 30,
	2010		2011		2010		2011
Shares underlying stock options, restricted stock units and warrants		2,082		6,657		1,864		6,658
0.25% Convertible Senior Notes due May 1, 2013		7,539		5,470		7,539		5,470
4.00% Convertible Senior Notes due March 15, 2015		9,607		18,396		4,777		18,396
0.875% Convertible Senior Notes due June 15, 2017		13,108		13,108		13,108		13,108
3.75% Convertible Senior Notes due October 15, 2018		—		17,356		—		17,356

Total excluded due to anti-dilutive effect		32,336		60,987		27,288		60,988

(16) SHARE-BASED COMPENSATION EXPENSE

Ciena grants equity awards under its 2008 Omnibus Incentive Plan (“2008 Plan”) and 2003 Employee Stock Purchase Plan (“ESPP”). These plans were approved by shareholders and are described in Ciena’s annual report on Form 10-K. In connection with its acquisition of the MEN Business, Ciena also adopted the 2010 Inducement Equity Award Plan (“2010 Plan”) pursuant to which it has made awards to eligible persons as described below.

2008 Plan

Ciena has previously granted stock options and restricted stock units under its 2008 Plan. Pursuant to Board and stockholder approval, effective April 14, 2010, Ciena amended its 2008 Plan to (i) increase the number of shares available for issuance by five million shares; and (ii) reduce from 1.6 to 1.31 the fungible share ratio used for counting full value awards, such as restricted stock units, against the shares remaining available under the 2008 Plan. As of April 30, 2011, there were approximately 4.0 million shares authorized and remaining available for issuance under the 2008 Plan.

2010 Inducement Equity Award Plan

On December 8, 2009, the Compensation Committee of the Board of Directors approved the 2010 Inducement Plan. The 2010 Plan was intended to enhance Ciena’s ability to attract and retain certain key employees transferred to Ciena in connection with its acquisition of the MEN Business. The 2010 Plan authorized the issuance of restricted stock or restricted stock units representing up to 2.25 million shares of Ciena common stock, of which 1.7 million shares were awarded prior to the March 19, 2011 termination date. Upon termination, those shares remaining available under the 2010 Plan, ceased to be available for issuance under the 2010 Plan or any other existing Ciena equity incentive plan.

Stock Options

Outstanding stock option awards to employees are generally subject to service-based vesting restrictions and vest incrementally over a four-year period. The following table is a summary of Ciena’s stock option activity for the periods indicated (shares in thousands):


	Shares
	Underlying			Weighted
	Options			Average
	Outstanding			Exercise Price
Balance as of October 31, 2010		5,002		$	40.96
Granted		—			—
Exercised		(370	)		15.39
Canceled		(375	)		92.76

Balance as of April 30, 2011		4,257		$	38.61

The total intrinsic value of options exercised during the first six months of fiscal 2010 and fiscal 2011, was $0.7 million and $2.1 million, respectively. The weighted average fair value of each stock option granted by Ciena during the first six months of fiscal 2010 was $6.95. There were no stock options granted by Ciena during the first six months of fiscal 2011.

The following table summarizes information with respect to stock options outstanding at April 30, 2011, based on Ciena’s closing stock price of $28.24 per share on the last trading day of Ciena’s second fiscal quarter of 2011 (shares and intrinsic value in thousands):


	Options Outstanding at April 30, 2011				Vested Options at April 30, 2011
		Weighted				Weighted
		Average				Average
		Remaining	Weighted			Remaining	Weighted
Range of	Number	Contractual	Average	Aggregate	Number	Contractual	Average	Aggregate
Exercise	of	Life	Exercise	Intrinsic	of	Life	Exercise	Intrinsic
Price	Shares	(Years)	Price	Value	Shares	(Years)	Price	Value
$ 0.01 — $ 16.52	661	5.69	$11.24	$11,244	518	5.03	$11.57	$8,645
$16.53 — $ 17.43	361	4.37	17.20	3,981	343	4.21	17.20	3,783
$17.44 — $ 22.96	349	3.97	21.80	2,245	331	3.81	21.86	2,111
$22.97 — $ 31.71	1,267	3.61	29.43	708	1,229	3.51	29.46	675
$31.72 — $ 46.90	789	4.97	39.47	—	719	4.81	39.69	—
$46.91 — $ 73.78	400	1.62	59.13	—	400	1.62	59.13	—
$73.79 — $422.38	430	0.46	118.77	—	430	0.46	118.77	—

$ 0.01 — $422.38	4,257	3.77	$38.61	$18,178	3,970	3.51	$39.94	$15,214

Assumptions for Option-Based Awards

Ciena recognizes the fair value of service-based options as share-based compensation expense on a straight-line basis over the requisite service period. Ciena did not grant any option-based awards during the first six months of fiscal 2011. During the first six months of fiscal 2010, Ciena estimated the fair value of each option award on the date of grant using the Black-Scholes option-pricing model, with the following weighted average assumptions:


	Quarter Ended	Six Months Ended
	April 30,	April 30,
	2010	2010
Expected volatility	61.9%	61.9%
Risk-free interest rate	2.8 – 3.0%	2.4 – 3.0%
Expected life (years)	5.3 – 5.5	5.3 – 5.5
Expected dividend yield	0.0%	0.0%

Ciena considered the implied volatility and historical volatility of its stock price in determining its expected volatility, and, finding both to be equally reliable, determined that a combination of both would result in the best estimate of expected volatility.

The risk-free interest rate assumption is based upon observed interest rates appropriate for the expected term of Ciena’s employee stock options.

The expected life of employee stock options represents the weighted-average period the stock options are expected to remain outstanding. Ciena uses historical information about specific exercise behavior of its grantees to determine the expected term.

The dividend yield assumption is based on Ciena’s history and expectation of dividend payouts.

Because share-based compensation expense is recognized only for those awards that are ultimately expected to vest, the amount of share-based compensation expense recognized reflects a reduction for estimated forfeitures. Ciena estimates forfeitures at the time of grant and revises those estimates in subsequent periods based upon new or changed information. Ciena relies upon historical experience in establishing forfeiture rates. If actual forfeitures differ from current estimates, total unrecognized share-based compensation expense will be adjusted for future changes in estimated forfeitures.

Restricted Stock Units

A restricted stock unit is a stock award that entitles the holder to receive shares of Ciena common stock as the unit vests. Ciena’s outstanding restricted stock unit awards are subject to service-based vesting conditions and/or performance-based vesting conditions. Awards subject to service-based conditions typically vest in increments over a three to four year period. Awards with performance-based vesting conditions require the achievement of certain operational, financial or other performance criteria or targets as a condition of vesting, or acceleration of vesting, of such awards.

Ciena’s outstanding restricted stock units include “performance-accelerated” restricted stock units (PARS), which vest in full four years after the date of grant (assuming that the grantee is still employed by Ciena at that time). At the beginning of each of the first three fiscal years following the date of grant, the Compensation Committee establishes one-year performance targets which, if satisfied, provide for the acceleration of vesting of one-third of the award. As a result, the recipient has the opportunity, subject to satisfaction of performance conditions, to vest as to the entire award in three years. Ciena recognizes the estimated fair value of performance-based awards, net of estimated forfeitures, as share-based expense over the performance period, using graded vesting, which considers each performance period or tranche separately, based upon Ciena’s determination of whether it is probable that the performance targets will be achieved. At each reporting period, Ciena reassesses the probability of achieving the performance targets and the performance period required to meet those targets.

The aggregate fair value of Ciena’s restricted stock units is based on Ciena’s closing stock price on the last trading day of each period as indicated. The following table is a summary of Ciena’s restricted stock unit activity for the periods indicated, with the aggregate fair value of the balance outstanding at the end of each period, based on Ciena’s closing stock price on the last trading day of the relevant period (shares and aggregate fair value in thousands):


				Weighted
				Average
	Restricted			Grant Date		Aggregate
	Stock Units			Fair Value		Fair
	Outstanding			Per Share		Value
Balance as of October 31, 2010		5,191		$	13.81	$	71,681
Granted		1,732
Vested		(1,090	)
Canceled or forfeited		(438	)

Balance as of April 30, 2011		5,395		$	15.59	$	84,100

The total fair value of restricted stock units that vested and were converted into common stock during the first six months of fiscal 2010 and fiscal 2011 was $12.0 million and $24.3 million, respectively. The weighted average fair value of each restricted stock unit granted by Ciena during the first six months of fiscal 2010 and fiscal 2011 was $13.34 and $19.85, respectively.

Assumptions for Restricted Stock Unit Awards

The fair value of each restricted stock unit award is estimated using the intrinsic value method, which is based on the closing price on the date of grant. Share-based expense for service-based restricted stock unit awards is recognized, net of estimated forfeitures, ratably over the vesting period on a straight-line basis.

Share-based expense for performance-based restricted stock unit awards, net of estimated forfeitures, is recognized ratably over the performance period based upon Ciena’s determination of whether it is probable that the performance targets will be achieved. At each reporting period, Ciena reassesses the probability of achieving the performance targets and the performance period required to meet those targets. The estimation of whether the performance targets will be achieved involves judgment, and the estimate of expense is revised periodically based on the probability of achieving the performance targets. Revisions are reflected in the period in which the estimate is changed. If any performance goals are not met, no compensation cost is ultimately recognized against that goal and, to the extent previously recognized, compensation cost is reversed.

2003 Employee Stock Purchase Plan

In March 2003, Ciena stockholders approved the 2003 Employee Stock Purchase Plan (the “ESPP”), which has a ten-year term. Ciena stockholders subsequently approved an amendment increasing the number of shares available to 3.6 million and adopting an “evergreen” provision. On December 31 of each year, the number of shares available under the ESPP will increase by up to 0.6 million shares, provided that the total number of shares available at that time shall not exceed 3.6 million. Under the ESPP, eligible employees may enroll in a six-month offer period during certain open enrollment periods. The six-month offer periods begin on December 21 and June 21 of each year with an initial stub period running from October 1, 2010 through December 20, 2010. The purchase price is equal to 85% of the lower of the fair market value of Ciena common stock on the day preceding each offer period or the last day of each offer period. The current ESPP is considered compensatory for purposes of share-based compensation expense. During the first six months of fiscal 2011, Ciena estimated the fair value of each ESPP option on the first date of the offer period using the Black-Scholes option-pricing model, with the following weighted average assumptions:


	Quarter Ended			Six Months Ended
	April 30,			April 30,
	2011			2011
Expected volatility		39.8	%	39.8 – 49.1%
Risk-free interest rate		0.19	%	0.19 – 0.64%
Expected life (years)		0.5		0.25 – 0.50
Expected dividend yield		0.0	%	0.0%

The following table is a summary of ESPP activity and shares available for issuance for the periods indicated (shares and intrinsic value in thousands):


	ESPP shares available			Intrinsic value at stock
	for issuance			issuance date
Balance as of October 31, 2010		3,498
Issued December 20, 2010		(139	)	$	1,117
Evergreen at December 31, 2010		212

Balance as of April 30, 2011		3,571

Share-Based Compensation Expense for Periods Reported

The following table summarizes share-based compensation expense for the periods indicated (in thousands):


	Quarter Ended April 30,					Six Months Ended April 30,
	2010			2011		2010			2011
Product costs	$	549		$	505	$	927		$	1,079
Service costs		452			502		883			1,005

Share-based compensation expense included in cost of sales		1,001			1,007		1,810			2,084


Research and development		2,259			2,597		4,646			5,168
Sales and marketing		2,665			3,143		5,123			6,134
General and administrative		2,301			2,140		4,876			5,141
Acquisition and integration costs		345			74		345			234

Share-based compensation expense included in operating expense		7,570			7,954		14,990			16,677


Share-based compensation expense capitalized in inventory, net		(53	)		60		(1	)		125


Total share-based compensation	$	8,518		$	9,021	$	16,799		$	18,886

As of April 30, 2011, total unrecognized compensation expense was $71.7 million: (i) $2.8 million, which relates to unvested stock options and is expected to be recognized over a weighted-average period of 0.6 year; and (ii) $68.9 million, which relates to unvested restricted stock units and is expected to be recognized over a weighted-average period of 1.7 years.

(17) COMPREHENSIVE LOSS

The components of comprehensive loss were as follows for the periods indicated (in thousands):


	Quarter Ended April 30,						Six Months Ended April 30,
	2010			2011			2010			2011
Net loss	$	(90,009	)	$	(62,686	)	$	(143,342	)	$	(141,742	)
Change in unrealized gain (loss) on available-for-sale securities, net of tax		(272	)		192			(458	)		375
Change in unrealized gain (loss) on foreign currency forward contracts, net of tax		—			175			—			175
Change in accumulated translation adjustments		98			5,625			(535	)		5,193

Total comprehensive loss	$	(90,183	)	$	(56,694	)	$	(144,335	)	$	(135,999	)

(18) SEGMENT AND ENTITY WIDE DISCLOSURES

Segment Reporting

Ciena’s segments are discussed in the following product and service groupings:

	•		Packet-Optical Transport — includes optical transport solutions that increase network capacity and enable more rapid delivery of a broader mix of high-bandwidth services. These products are used by network operators to facilitate the cost effective and efficient transport of voice, video and data traffic in core networks, as well as regional, metro and access networks. Our principal products in this segment include the ActivFlex 6500 Packet-Optical Platform (ActivFlex 6500); ActivFlex 6110 Multiservice Optical Platform (ActivFlex 6110); ActivSpan 5200 (ActivSpan 5200); ActivSpan Common Photonic Layer (CPL); Optical Multiservice Edge 1000 series (OME 1000); and Optical Metro 3500 (OM 3500) from the MEN Business. This segment includes sales of our ActivSpan 4200^® FlexSelect^®Advanced Services Platform (ActivSpan 4200) and our Corestream^® Agility Optical Transport System (Corestream) from Ciena’s pre-acquisition portfolio. This segment also includes sales from legacy SONET/SDH products and legacy data networking products, as well as certain enterprise-oriented transport solutions that support storage and LAN extension, interconnection of data centers, and virtual private networks. This segment also includes operating system software and enhanced software features embedded in each of these products. Revenue from this segment is included in product revenue on the Condensed Consolidated Statement of Operations.

	•		Packet-Optical Switching — includes optical switching platforms that enable automated optical infrastructures for the delivery of a wide variety of enterprise and consumer-oriented network services. Our principal products in this segment include our CoreDirector^® Multiservice Optical Switch, CoreDirector FS; and our ActivFlex 5430 Reconfigurable Switching System, our packet Optical Transport Network (OTN) configuration for the 5400 family. These products include multiservice, multi-protocol switching systems that consolidate the functionality of an add/drop multiplexer, digital cross-connect and packet switch into a single, high-capacity intelligent switching system. These products address both the core and metro segments of communications networks and support key managed service services, Ethernet/TDM Private Line, Triple Play and IP services. This segment also includes sales of operating system

			software and enhanced software features embedded in each of these products. Revenue from this segment is included in product revenue on the Condensed Consolidated Statement of Operations.

	•		Carrier Ethernet Service Delivery - includes the ActivEdge 3900 family of service delivery switches and service aggregation switches, as well as the ActivEdge 5000 series and ActivEdge 5410 Service Aggregation Switch, our Carrier Ethernet configuration for the 5400 family. These products support the access and aggregation tiers of communications networks and have principally been deployed to support wireless backhaul infrastructures and business data services. Employing sophisticated Carrier Ethernet switching technology, these products deliver quality of service capabilities, virtual local area networking and switching functions, and carrier-grade operations, administration, and maintenance features. This segment includes the legacy metro Ethernet routing switch (MERS) product line, from the MEN Business, and broadband products, including our CNX-5 Broadband DSL System (CNX-5), that transitions legacy voice networks to support Internet-based (IP) telephony, video services and DSL. This segment also includes sales of operating system software and enhanced software features embedded in each of these products. Revenue from this segment is included in product revenue on the Condensed Consolidated Statement of Operations.

	•		Software and Services - includes our integrated network and service management software designed to automate and simplify network management and operation, while increasing network performance and functionality. These software solutions can track individual services across multiple product suites, facilitating planned network maintenance, outage detection and identification of customers or services affected by network troubles. This segment also includes a broad range of consulting and support services, including installation and deployment, maintenance support, consulting, network design and training activities. Except for revenue from the software portion of this segment, which is included in product revenue, revenue from this segment is included in services revenue on the Condensed Consolidated Statement of Operations.

Reportable segment asset information is not disclosed because it is not reviewed by the chief operating decision maker for purposes of evaluating performance and allocating resources.

The table below (in thousands, except percentage data) sets forth Ciena’s segment revenue for the respective periods:


	Quarter Ended April 30,								Six Months Ended April 30,
	2010		%*		2011		%*		2010		%*		2011		%*
Revenue:
Packet-Optical Transport	$	97,689		38.5	$	272,635		65.2	$	181,159		42.2	$	559,116		65.7
Packet-Optical Switching		32,434		12.8		31,267		7.5		55,832		13.0		66,541		7.8
Carrier Ethernet Service Delivery		74,806		29.5		30,931		7.4		115,245		26.8		58,559		6.9
Software and Services		48,542		19.2		83,061		19.9		77,111		18.0		166,986		19.6

Consolidated revenue	$	253,471		100.0	$	417,894		100.0	$	429,347		100.0	$	851,202		100.0


*		Denotes % of total revenue

Segment Profit (Loss)

Segment profit (loss) is determined based on internal performance measures used by the chief executive officer to assess the performance of each operating segment in a given period. In connection with that assessment, the chief executive officer excludes the following items: selling and marketing costs; general and administrative costs; acquisition and integration costs; amortization of intangible assets; restructuring costs; change in fair value of contingent consideration; interest and other income (net); interest expense; equity investment gains or losses and provisions (benefit) for income taxes.

The table below (in thousands) sets forth Ciena’s segment profit (loss) and the reconciliation to consolidated net income (loss) during the respective periods:


	Quarter Ended April 30,						Six Months Ended April 30,
	2010			2011			2010			2011
Segment profit (loss):
Packet-Optical Transport	$	(6,595	)	$	36,506		$	13,528		$	75,532
Packet-Optical Switching		5,467			8,487			3,429			21,364
Carrier Ethernet Service Delivery		25,972			3,497			34,854			5,890
Software and Services		8,956			17,719			12,116			36,139

Total segment profit (loss)		33,800			66,209			63,927			138,925

Other nonperformance items:
Selling and marketing		(45,328	)		(61,768	)		(79,565	)		(118,860	)
General and administrative		(21,503	)		(32,480	)		(34,266	)		(70,794	)
Acquisition and integration costs		(39,221	)		(10,741	)		(66,252	)		(34,926	)
Amortization of intangible assets		(17,121	)		(13,674	)		(23,102	)		(42,458	)
Restructuring costs		(1,849	)		(3,164	)		(1,828	)		(4,686	)
Change in fair value of contingent consideration		—			—			—			3,289
Interest and other financial charges, net		(365	)		(5,177	)		(2,966	)		(8,462	)
(Provision) benefit for income taxes		1,578			(1,891	)		710			(3,770	)

Consolidated net loss	$	(90,009	)	$	(62,686	)	$	(143,342	)	$	(141,742	)

Entity Wide Reporting

The following table reflects Ciena’s geographic distribution of revenue based on the location of the purchaser, with any country accounting for greater than 10% of total revenue in the period specifically identified. Revenue attributable to geographic regions outside of the United States is reflected as “Other International” revenue. For the periods below, Ciena’s geographic distribution of revenue was as follows (in thousands, except percentage data):


	Quarter Ended April 30,								Six Months Ended April 30,
	2010		%*		2011		%*		2010		%*		2011		%*
United States	$	180,523		71.2	$	230,801		55.2	$	304,435		70.9	$	451,150		53.0
Other International		72,948		28.8		187,093		44.8		124,912		29.1		400,052		47.0

Total	$	253,471		100.0	$	417,894		100.0	$	429,347		100.0	$	851,202		100.0


*		Denotes % of total revenue

The following table reflects Ciena’s geographic distribution of equipment, furniture and fixtures, with any country accounting for greater than 10% of total equipment, furniture and fixtures specifically identified. Equipment, furniture and fixtures attributable to geographic regions outside of the United States and Canada are reflected as “Other International.” For the periods below, Ciena’s geographic distribution of equipment, furniture and fixtures was as follows (in thousands, except percentage data):


	October 31,				April 30,
	2010		%*		2011		%*
United States	$	63,675		52.9	$	63,649		50.3
Canada		45,103		37.5		50,294		39.8
Other International		11,516		9.6		12,456		9.9

Total	$	120,294		100.0	$	126,399		100.0


*		Denotes % of total equipment, furniture and fixtures

For the periods below, customers accounting for at least 10% of Ciena’s revenue were as follows (in thousands, except percentage data):


	Quarter Ended April 30,								Six Months Ended April 30,
	2010		%*		2011		%*		2010		%*		2011		%*
Company A	$	70,808		27.9	$	66,104		15.8	$	113,323		26.4	$	126,941		14.9
Company B		36,531		14.4		n/a		—		51,867		12.1		n/a		—
Company C		n/a		—		42,159		10.1		n/a		—		89,981		10.6

Total	$	107,339		42.3	$	108,263		25.9	$	165,190		38.5	$	216,922		25.5


n/a		Denotes revenue representing less than 10% of total revenue for the period

*		Denotes % of total revenue

(19) CONTINGENCIES

Foreign Tax Contingencies

Ciena has received assessment notices from the Mexican tax authorities asserting deficiencies in payments between 2001 and 2005 related primarily to income taxes and import taxes and duties. Ciena has filed judicial petitions appealing these assessments. As of October 31, 2010 and April 30, 2011, Ciena had accrued liabilities of $1.4 million and $1.6 million, respectively, related to these contingencies, which are reported as a component of other current accrued liabilities. As of April 30, 2011, Ciena estimates that it could be exposed to possible losses of up to $5.8 million, for which it has not accrued liabilities. Ciena has not accrued the additional income tax liabilities because it does not believe that such losses are more likely than not to be incurred. Ciena has not accrued the additional import taxes and duties because it does not believe the incurrence of such losses are probable. Ciena continues to evaluate the likelihood of probable and reasonably possible losses, if any, related to these assessments. As a result, future increases or decreases to accrued liabilities may be necessary and will be recorded in the period when such amounts are estimable and more likely than not (for income taxes) or probable (for non-income taxes).

In addition to the matters described above, Ciena is subject to various tax liabilities arising in the ordinary course of business. Ciena does not expect that the ultimate settlement of these liabilities will have a material effect on our results of operations, financial position or cash flows.

Litigation

On May 29, 2008, Graywire, LLC filed a complaint in the United States District Court for the Northern District of Georgia against Ciena and four other defendants, alleging, among other things, that certain of the parties’ products infringe U.S. Patent 6,542,673 (the “’673 Patent”), relating to an identifier system and components for optical assemblies. The complaint, which seeks injunctive relief and damages, was served upon Ciena on January 20, 2009. Ciena filed an answer to the complaint and counterclaims against Graywire on March 26, 2009, and an amended answer and counterclaims on April 17, 2009. On April 27, 2009, Ciena and certain other defendants filed an application for inter partes reexamination of the ‘673 Patent with the U.S. Patent and Trademark Office (the “PTO”). On the same date, Ciena and the other defendants filed a motion to stay the case pending reexamination of all of the patents-in-suit. On July 17, 2009, the district court granted the defendants’ motion to stay the case. On July 23, 2009, the PTO granted the defendants’ application for reexamination with respect to certain claims of the ‘673 Patent. On March 17, 2011, the PTO granted a third party application for reexamination with respect to one claim of the ‘673 Patent. Ciena believes that it has valid defenses to the lawsuit and intends to defend it vigorously in the event the stay of the case is lifted.

As a result of its June 2002 merger with ONI Systems Corp., Ciena became a defendant in a securities class action lawsuit filed in the United States District Court for the Southern District of New York in August 2001. The complaint named ONI, certain former ONI officers, and certain underwriters of ONI’s initial public offering (IPO) as defendants, and alleges, among other things, that the underwriter defendants violated the securities laws by failing to disclose alleged compensation arrangements in ONI’s registration statement and by engaging in manipulative practices to artificially inflate ONI’s stock price after the IPO. The complaint also alleges that ONI and the named former officers violated the securities laws by failing to disclose the underwriters’ alleged compensation arrangements and manipulative practices. The former ONI officers have been dismissed from the action without prejudice. Similar complaints have been filed against more than 300 other issuers that have had initial public offerings since 1998, and all of these actions have been included in a single coordinated proceeding. On October 6, 2009, the Court entered an opinion granting final approval to a settlement among the plaintiffs, issuer defendants and underwriter defendants, and directing that the Clerk of the Court close these actions. Notices of appeal of the opinion granting final approval have been filed, all of which have been either resolved or dismissed, except one. A description of this litigation and the history of the proceedings can be found in “Item 3. Legal Proceedings” of Part I of Ciena’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on December 22, 2010. No specific amount of damages has been claimed in this action. Due to the inherent uncertainties of litigation and because the settlement remains subject to appeal, the ultimate outcome of the matter is uncertain.

In addition to the matters described above, Ciena is subject to various legal proceedings, claims and litigation arising in the ordinary course of business. Ciena does not expect that the ultimate costs to resolve these matters will have a material effect on its results of operations, financial position or cash flows.


*Item 2.*		*Management’s Discussion and Analysis of Financial Condition and Results of Operations*

Some of the statements contained, or incorporated by reference, in this quarterly report discuss future events or expectations, contain projections of results of operations or financial condition, changes in the markets for our products and services, or state other “forward-looking” information. Ciena’s “forward-looking” information is based on various factors and was derived using numerous assumptions. In some cases, you can identify these “forward-looking statements” by words like “may,” “will,” “should,” “expects,” “plans,” “anticipates,” “believes,” “estimates,” “predicts,” “potential” or “continue” or the negative of those words and other comparable words. You should be aware that these statements only reflect our current predictions and beliefs. These statements are subject to known and unknown risks, uncertainties and other factors, and actual events or results may differ materially. Important factors that could cause our actual results to be materially different from the forward-looking statements are disclosed throughout this report, particularly in Item 1A “Risk Factors” of Part II of this report below. You should review these risk factors and the rest of this quarterly report in combination with the more detailed description of our business and management’s discussion and analysis of financial condition in our annual report on Form 10-K, which we filed with the Securities and Exchange Commission on December 22, 2010, for a more complete understanding of the risks associated with an investment in Ciena’s securities. Ciena undertakes no obligation to revise or update any forward-looking statements.

Overview

We are a provider of communications networking equipment, software and services that support the transport, switching, aggregation and management of voice, video and data traffic. Our Packet-Optical Transport, Packet-Optical Switching and Carrier Ethernet Service Delivery products are used, individually or as part of an integrated solution, in networks operated by communications service providers, cable operators, governments and enterprises around the globe.

We are a network specialist targeting the transition of disparate, legacy communications networks to converged, next-generation architectures that are optimized to handle increased traffic volumes and deliver more efficiently a broader mix of high-bandwidth communications services. Our communications networking products, through their embedded software and our network management software suites, enable network operators to efficiently and cost-effectively deliver critical enterprise and consumer-oriented communication services. Together with our comprehensive design, implementation and support services, our networking solutions offering seeks to enable software-defined, automated networks that address the business challenges, communications infrastructure requirements and service delivery needs of our customers. Our customers face a challenging and rapidly changing environment that requires their networks be robust enough to address increasing capacity needs from a growing set of consumer and business applications, and flexible enough to quickly adapt to execute new business strategies and support the delivery of innovative, revenue-creating services. By improving network productivity and automation, reducing network costs and providing flexibility to enable differentiated service offerings, our networking solutions offering creates business and operational value for our customers.

Acquisition of Nortel Metro Ethernet Networks Business (the “MEN Acquisition”)

On March 19, 2010, we completed our acquisition of substantially all of the optical networking and Carrier Ethernet assets of Nortel’s Metro Ethernet Networks business (the “MEN Business”) for a purchase price of $676.8 million. See Note 3 to the Condensed Consolidated Financial Statements in Item 1 of this report for more information.

Integration Activities and Costs

During the second quarter of fiscal 2011, we integrated the MEN Business operations into Ciena’s enterprise resource planning system and other critical business systems. This system integration enabled us to substantially end our reliance upon transition services performed by an affiliate of Nortel following the MEN Acquisition. Accomplishing this important integration achievement necessitated a temporary shut-down of supply chain operations early in our second quarter of fiscal 2011, which affected our operations and results as described below. With critical integration activities substantially complete, we are focused on optimizing and gaining leverage from our business systems, processes, operations and resources to support the growth of the combined business.

Restructuring Activities

Since the MEN Acquisition, we have undertaken a number of restructuring activities intended to reduce operating expense and better align our workforce and operating costs with market opportunities, product development and business strategies for the combined operations. On November 16, 2010, we announced a headcount reduction affecting approximately 50 employees, principally in our global product group in North America. To consolidate our global distribution centers and related operations, on February 28, 2011, we proposed changes in our distribution model that may affect 50 to 60 roles related to our supply chain operations and workforce in Monkstown, Northern Ireland. Execution of any specific reorganization or headcount reduction is subject to local legal requirements, including notification and consultation processes with employees and employee representatives. During the first six months of fiscal 2011, we incurred approximately $4.7 million in restructuring costs related to these actions, and a previously announced reorganization of our business and operations in EMEA. We expect these actions to result in an additional restructuring charge in the range of $1.0 million to $2.0 million during the remainder of fiscal 2011. As we look to manage operating expense and optimize the resources of the combined operations, we will continue to assess the allocation of headcount, facilities and other resources toward key growth opportunities for our business and evaluate additional cost reduction measures.

Effect of MEN Acquisition upon Results of Operations and Financial Condition

Due to the relative scale of its operations, the MEN Acquisition has materially affected our operations, financial results and liquidity and may make period to period comparisons difficult. Our revenue and operating expense increased materially compared to periods prior to the MEN Acquisition, with increases in our concentration of Packet-Optical Transport revenue and revenue from outside of the United States. From the closing of the MEN Acquisition through the second quarter of fiscal 2011, we incurred significant integration costs and transition services expense. Integration activities resulted in $136.3 million in transaction, consulting and third party service fees, $13.2 million in severance expense, and an additional $19.4 million, primarily related to purchases of capitalized information technology equipment through the second quarter of fiscal 2011. We anticipate that we will incur approximately $5.0 million to $10.0 million in additional integration costs during the remainder of fiscal 2011. Transition services cost principally reflected in operating expense, were related to services performed by a Nortel affiliate associated with finance and accounting functions, supply chain and logistics management, maintenance and product support, order management and fulfillment, trade compliance, and information technology. In addition, as a result of the MEN Acquisition, we recorded $492.4 million in other intangible assets that will be amortized over their useful lives and increase our operating expense.

Gross margin was adversely affected by the valuation, required under accounting rules, of the acquired finished goods inventory of the MEN Business to fair value upon closing. This valuation increased marketable inventory carrying value by $62.3 million, of which $48.0 million and $12.4 million were recognized in cost of goods sold during fiscal 2010 and the first six months of fiscal 2011 respectively. See “Critical Accounting Policies and Estimates- Long-lived Assets” and Note 3 of the Condensed Consolidated Financial Statements found under Item 1 of this report.

Competitive Landscape

We continue to encounter a competitive marketplace, in part, due to our increased market share, technology leadership and global presence resulting from the MEN Acquisition. Following the MEN Acquisition, we have experienced increased customer activity and been afforded increased consideration and opportunities to participate in competition for network builds and upgrades, including in new geographies, markets and applications for our products. For example, we have made early progress in the sale of our products for application in submarine networks and with sales to customers in the Middle East. Securing these opportunities, particularly for international sales, often requires that we agree to less favorable commercial terms or pricing, financial commitments requiring collateralized performance bonds or similar instruments that place cash resources at risk, and other committments that place a disproportionate allocation of risk upon the vendor. Competition has also intensified as we and our competitors more aggressively seek to capture market share, secure next-generation network build opportunities, and displace incumbent equipment vendors at large carrier customers. We expect this level of competition, particularly in North America, to continue and potentially increase, as larger foreign equipment vendors seek to gain entry into the U.S. market, and other competitors seek to retain incumbent positions with customers.

Strategy

We believe that a number of important underlying drivers represent significant long-term opportunities and growing demand for converged optical Ethernet networking solutions in our target markets. We believe that market trends including the proliferation of mobile web applications, prevalence of video applications and shift of enterprise applications to the cloud or virtualized environments are emblematic of increased use and dependence by consumers and enterprises upon a growing variety of broadband applications and services. These services will continue to add network traffic and consume available bandwidth, requiring our customers to invest in high-capacity, next-generation network infrastructures that are more efficient and robust, and better able to handle multiservice traffic, more dynamic traffic patterns and increased transmission rates.

To capitalize on the market dynamics above, we have been investing heavily in our business and are in the process of introducing, or transitioning to, significant, new solutions offerings in each of our segments. These developments include the enhancement of our 100G coherent optical transport solution to further improve network flexibility, performance, spectral efficiency and reach. We are also bringing to market a re-architected, integrated network management software platform that unifies visibility, control and service enablement across our product portfolio. Within Packet-Optical Switching, we are transitioning from CoreDirector to our data-optimized, ActivFlex 5430 Reconfigurable Switching System, to enable an end-to-end Optical Transport Network (OTN) architecture that offers improved cost per bit, flexibility and reliability. We are also expanding our Carrier Ethernet Service Delivery portfolio to include the ActivEdge 5410; our high-capacity (terabit scale) Ethernet metro aggregation switch to support wireless backhaul, Ethernet business services and residential broadband applications. Simultaneously, we have also been investing in market entry into multiple, new geographies and vertical segments, as well as the expansion of footprint within our traditional customer base. Managing these platform introductions and market expansions has required increased investment that has impacted and continues to impact a number of financial and operational metrics, including margin, operating expense and cash flows. These investments are a critical element of our effort to address evolving industry trends and end user network requirements, and we believe they will position us to seize market opportunities for long-term growth. Additional components of our corporate strategy include:

Diversify our customer segments and customer application of our products. Historically, service providers have represented the largest portion of our revenue, with their application of our products largely supporting terrestrial, wireline networks. Part of our strategy is to seek opportunities to address new customer segments, and increase our sales to wireless providers, cable and multiservice operators, enterprises, government agencies and research and educational institutions. We are also seeking to sell our product and service solutions to support additional network applications, including in submarine networks, content delivery networks, business Ethernet services and mobile backhaul.

Expand our geographic reach. We seek to enhance our brand internationally and build upon the broader global presence of our business provided by the MEN Acquisition. In particular, we seek to expand our geographic reach and market share in growing markets including Brazil, the Middle East, Russia and India. Some of these jurisdictions maintain restrictions on importation, trade protection measures and other domestic preference requirements that could limit our access or success in these markets. For example, India has recently implemented certain security requirements affecting non-Indian network equipment vendors and has imposed significant tariffs upon certain telecommunications equipment manufactured in China; where we assemble certain products and source many components and parts. These requirements may make sales in these markets costly or necessitate changes in our supply chain and operations.

Increase sales of Packet-Optical Switching and Carrier Ethernet Service Delivery solutions. Through cross-selling and other sales initiatives, we seek to increase the number of customers of and revenue from our Packet-Optical Switching and Carrier Ethernet Service Delivery products, particularly in international markets. By extending our technology leadership in next-generation, coherent transport technology, we seek to drive additional business opportunities for our Packet-Optical Switching and Carrier Ethernet Service Delivery products. Each of these product segments is in the early stages of significant platform transitions and we expect our revenue, gross margin and results of operations may fluctuate in the future in large part depending upon our success in selling new platforms within these segments.

Leverage our consultative, network specialist approach to drive service and software sales. Our close, consultative relationship with customers enables us to bring strategic value to customer relationships beyond the sale of next-generation communications networking solutions. By understanding and addressing their business needs and the challenging markets in which they compete, we can offer solutions that create additional business and operational value for our customers. We intend to leverage this approach to drive customized opportunities for our Ciena specialist services and sales of integrated, network management software solutions that enable service level management across network layers, rapid service provisioning and increased automation.

Optimize operations, infrastructure and resources to achieve desired operating leverage. With critical integration activities substantially complete, we are focused on optimizing and gaining leverage from our business processes, systems, infrastructure and resources. These initiatives include the enhancement and further automation of business processes and systems, and the consolidation of our supply chain, third party manufacturers, logistics providers and facilities. We seek to leverage these and other longer-term opportunities, to improve operating efficiencies and promote the growth of the business.

Financial Results

Revenue for the second quarter of fiscal 2011 was $417.9 million, which represented a sequential decrease of 3.6% from $433.3 million in the first quarter of fiscal 2011. Our second quarter revenue was affected by the temporary shut-down of supply chain operations early in the quarter as part of the significant system integration effort described above, which, in part, contributed to a higher concentration of shipments later in the second quarter. Revenue for the first quarter of fiscal 2011 benefitted, to a degree, from customer requests that we accelerate shipments of certain orders to enable them to avoid any effect of the temporary shut-down. Revenue-related details reflecting sequential changes in quarterly revenue from the first quarter of fiscal 2011 include:

	•		Product revenue for the second quarter of fiscal 2011 decreased by $16.4 million, reflecting decreases of $13.8 million in Packet-Optical Transport revenue, $4.0 million in Packet-Optical Switching revenue and $1.9 million in sales of integrated network and service management software. These decreases were partially offset by an increase of $3.3 million in sales of Carrier Ethernet Service Delivery products.

	•		Service revenue for the second quarter of fiscal 2011 increased by $1.0 million.

	•		Revenue from the United States for the second quarter of fiscal 2011 was $230.8 million, an increase from $220.3 million in the first quarter of fiscal 2011.

	•		International revenue for the second quarter of fiscal 2011 was $187.1 million, a decrease from $213.0 million in the first quarter of fiscal 2011.

	•		As a percentage of revenue, international revenue was 44.8% during the second quarter of fiscal 2011, a decrease from 49.1% during the first quarter of fiscal 2011.

	•		For the second quarter of fiscal 2011, two customers accounted for greater than 10% of revenue, representing 25.9% of total revenue. This compares to two customers that accounted for 25.1% of total revenue in the first quarter of fiscal 2011.

Gross margin for the second quarter of fiscal 2011 was 39.7%, an increase from 38.9% in the first quarter of fiscal 2011. Gross margin has been affected in recent periods by increased competitive pressures and initial deployment of lower margin common equipment within our Packet-Optical Transport product segment, reflective of our strategy to gain new customers, enter new markets and capture additional market share for our 40G and 100G coherent optical transport solutions. The effects of this aggressive effort to capture market share for our next-generation optical transport solutions offset certain reductions in costs of goods sold due to improved manufacturing efficiencies.

Operating expense was $221.5 million for the second quarter of fiscal 2011, a decrease from $242.4 million in the first quarter of fiscal 2011. Second quarter operating expense reflects lower costs associated with amortization of intangible assets, acquisition and integration expense, and general and administrative expense. These reductions were partially offset by higher costs associated with research and development, in part due to the weakening of the U.S. dollar in relation to the Canadian dollar, and variable sales compensation.

Our loss from operations for the second quarter of fiscal 2011 was $55.6 million. This compares to a $73.9 million loss from operations during the first quarter of fiscal 2011. Our net loss for the second quarter of fiscal 2011 was $62.7 million, or $0.66 per share. This compares to a net loss of $79.1 million, or $0.84 per share, for the first quarter of fiscal 2011.

We used $51.8 million in cash from operations during the second quarter of fiscal 2011, consisting of $41.4 million in cash used for changes in working capital and $10.4 million from net losses (adjusted for non-cash charges). Use of cash for the second quarter of fiscal 2011 reflects cash payments of $26.4 million of acquisition and integration-related expense and restructuring costs, of which $13.9 million was reflected in net losses (adjusted for non-cash charges) and $12.5 million was reflected in changes in working capital. This compares with the use of $63.7 million in cash from operations during the first quarter of fiscal 2011, consisting of $43.6 million in cash used for changes in working capital and $20.1 million from net losses (adjusted for non-cash charges). Use of cash for the first quarter of fiscal 2011 reflects cash payments of $24.5 million of acquisition and integration-related expense and restructuring costs, of which $25.7 million was reflected in net losses (adjusted for non-cash charges) and $1.2 million was reflected in changes in working capital. During the first quarter of fiscal 2011, we received $33.5 million related to the early termination of our lease of the “Lab 10” building on Nortel’s former Carling Campus in Ottawa, Canada (“Carling lease”), of which $17.1 million reduced the cash used from operations above and $16.4 million reduced cash used in investing activities.

As of April 30, 2011, we had $506.8 million in cash and cash equivalents and $50.1 million of long-term investments in U.S. treasury securities. This compares to $625.8 million and $688.7 million in cash and cash equivalents at January 31, 2011 and October 31, 2010, respectively.

As of April 30, 2011, headcount was 4,301, an increase from 4,254 at January 31, 2011 and 4,201 at October 31, 2010.

Consolidated Results of Operations

Our results of operations for the second quarter and six-month period ended April 30, 2010 reflect the operations of the MEN Business beginning on the March 19, 2010 acquisition date and therefore only reflect partial periods of combined operations. Our internal organizational structure and the management of our business and results of operations are presented based upon the following operating segments:

•

Packet-Optical Transport — includes optical transport solutions that increase network capacity and enable more rapid delivery of a broader mix of high-bandwidth services. These products are used by network operators to facilitate the cost effective and efficient transport of voice, video and data traffic in core networks, as well as regional, metro and access networks. Our principal products in this segment include the ActivFlex 6500 Packet-Optical Platform (ActivFlex 6500); ActivFlex 6110 Multiservice Optical Platform (ActivFlex 6110); ActivSpan 5200 (ActivSpan 5200); ActivSpan Common Photonic Layer (CPL); Optical Multiservice Edge 1000 series (OME 1000); and Optical Metro 3500 (OM 3500) from the MEN Business. This segment includes sales of our ActivSpan 4200^®

FlexSelect^®Advanced Services Platform (ActivSpan 4200) and our Corestream^® Agility Optical Transport System (Corestream) from Ciena’s pre-acquisition portfolio. This segment also includes sales from legacy SONET/SDH products and legacy data networking products, as well as certain enterprise-oriented transport solutions that support storage and LAN extension, interconnection of data centers, and virtual private networks. This segment also includes operating system software and enhanced software features embedded in each of these products. Revenue from this segment is included in product revenue on the Condensed Consolidated Statement of Operations.

	•		Packet-Optical Switching — includes optical switching platforms that enable automated optical infrastructures for the delivery of a wide variety of enterprise and consumer-oriented network services. Our principal products in this segment include our CoreDirector^® Multiservice Optical Switch, CoreDirector FS; and our ActivFlex 5430 Reconfigurable Switching System, our packet OTN configuration for the 5400 family. These products include multiservice, multi-protocol switching systems that consolidate the functionality of an add/drop multiplexer, digital cross-connect and packet switch into a single, high-capacity intelligent switching system. These products address both the core and metro segments of communications networks and support key managed service services, Ethernet/TDM Private Line, Triple Play and IP services. This segment also includes sales of operating system software and enhanced software features embedded in each of these products. Revenue from this segment is included in product revenue on the Condensed Consolidated Statement of Operations.

	•		Carrier Ethernet Service Delivery - includes the ActivEdge 3900 family of service delivery switches and service aggregation switches, as well as the ActivEdge 5000 series and ActivEdge 5410 Service Aggregation Switch, our Carrier Ethernet configuration for the 5400 family. These products support the access and aggregation tiers of communications networks and have principally been deployed to support wireless backhaul infrastructures and business data services. Employing sophisticated Carrier Ethernet switching technology, these products deliver quality of service capabilities, virtual local area networking and switching functions, and carrier-grade operations, administration, and maintenance features. This segment includes the legacy metro Ethernet routing switch (MERS) product line, from the MEN Business, and our broadband products, including our CNX-5 Broadband DSL System (CNX-5), that transitions legacy voice networks to support Internet-based (IP) telephony, video services and DSL. This segment also includes sales of operating system software and enhanced software features embedded in each of these products. Revenue from this segment is included in product revenue on the Condensed Consolidated Statement of Operations.

	•		Software and Services - includes our integrated network and service management software designed to automate and simplify network management and operation, while increasing network performance and functionality. These software solutions can track individual services across multiple product suites, facilitating planned network maintenance, outage detection and identification of customers or services affected by network troubles. This segment also includes a broad range of consulting and support services, including installation and deployment, maintenance support, consulting, network design and training activities. Except for revenue from the software portion of this segment, which is included in product revenue, revenue from this segment is included in services revenue on the Condensed Consolidated Statement of Operations.

Quarter ended April 30, 2010 compared to the quarter ended April 30, 2011

Revenue

The table below (in thousands, except percentage data) sets forth the changes in our operating segment revenue for the periods indicated:


	Quarter Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)			%**
Revenue:
Packet-Optical Transport	$	97,689		38.5	$	272,635		65.2	$	174,946			179.1
Packet-Optical Switching		32,434		12.8		31,267		7.5		(1,167	)		(3.6	)
Carrier Ethernet Service Delivery		74,806		29.5		30,931		7.4		(43,875	)		(58.7	)
Software and Services		48,542		19.2		83,061		19.9		34,519			71.1

Consolidated revenue	$	253,471		100.0	$	417,894		100.0	$	164,423			64.9


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

•

Packet-Optical Transport revenue increased reflecting a $130.6 million increase in ActivFlex 6500 revenue,

			largely driven by service provider demand for high-capacity, optical transport, including coherent 40G and 100G network infrastructures. Packet-Optical Transport revenue also benefited from sales increases of $20.1 million in CPL, $10.5 million in ActivSpan 5200, $6.6 million in ActivFlex 6110, $3.8 million in ActivSpan 4200, $1.9 million in legacy transport products, and $1.4 million in Corestream.

	•		Packet-Optical Switching revenue decreased reflecting a $1.2 million decrease in CoreDirector revenue. Packet-Optical Switching revenue has historically reflected sales of our CoreDirector platform, which has a concentrated customer base. Our Packet-Optical Switching segment is in the initial stages of a platform transition to our next-generation ActivFlex 5430 switching system. As a result of these factors, revenue for this segment can fluctuate considerably depending upon individual customer purchasing decisions and the level of initial deployments with customers.

	•		Carrier Ethernet Service Delivery revenue decreased reflecting a $45.0 million decrease in sales of our ActivEdge 3000 service-delivery switches and ActivEdge 5000 series of service aggregation switches. Revenue for the second quarter of fiscal 2010 reflected significant sales volume, largely to two customers in support of wireless backhaul. Quarterly revenue for this segment remains subject to fluctuation due to customer concentration, and the timing of customer purchasing and deployment cycles. We expect segment results to be dependent upon further adoption of these products to support business Ethernet service applications and the level of customer adoption of our ActivEdge 5410 Service Aggregation Switch, our high-capacity Carrier Ethernet configuration for the 5400 family to support wireless backhaul, Ethernet business services and residential broadband applications.

	•		Software and Services revenue increased primarily due to increases of $25.7 million in maintenance support revenue and $9.1 million in installation, deployment and consulting services.

Revenue from sales to customers outside of the United States is reflected as International in the geographic distribution of revenue below. The table below (in thousands, except percentage data) sets forth the changes in geographic distribution of revenue for the periods indicated:


	Quarter Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
United States	$	180,523		71.2	$	230,801		55.2	$	50,278		27.9
International		72,948		28.8		187,093		44.8		114,145		156.5

Total	$	253,471		100.0	$	417,894		100.0	$	164,423		64.9


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

	•		United States revenue increased primarily due to a $90.0 million increase in sales of Packet-Optical Transport products and an $11.3 million increase in services revenue. These increases were partially offset by a $45.0 million decrease in Carrier Ethernet Service Delivery sales and a $5.7 million decrease in Packet-Optical Switching revenue.

	•		International revenue increased primarily due to an $84.9 million increase in Packet-Optical Transport revenue, a $23.5 million increase in services revenue, and a $4.6 million increase in sales of Packet-Optical Switching products.

A sizable portion of our revenue continues to come from sales to a small number of service providers, particularly within our Packet-Optical Switching and Carrier-Ethernet Service Delivery businesses. As a result, our financial results are significantly affected by spending levels and the business challenges encountered by these customers. Moreover, our contracts do not have terms that obligate these customers to purchase any minimum or specific amounts of equipment or services. Our concentration of revenue can be adversely affected by consolidation activity among our customers. In addition, some of our customers are pursuing efforts to outsource the management and operation of their networks, or have indicated a procurement strategy to reduce the number of vendors from which they purchase equipment, which could further affect our concentration of revenue where we participate in these efforts. For the second quarter of fiscal 2011, two customers accounted for greater than 10% of revenue, representing 25.9% of total revenue. This compares to two customers that accounted for 42.3% of total revenue in the second quarter of fiscal 2010.

Cost of Goods Sold and Gross Profit

Product cost of goods sold consists primarily of amounts paid to third-party contract manufacturers, component costs, employee-related costs and overhead, shipping and logistics costs associated with manufacturing-related operations, warranty and other contractual obligations, royalties, license fees, amortization of intangible assets, cost of excess and obsolete inventory and, when applicable, estimated losses on committed customer contracts.

Services cost of goods sold consists primarily of direct and third-party costs, including employee-related costs, associated with our provision of services including installation, deployment, maintenance support, consulting and training activities, and, when applicable, estimated losses on committed customer contracts.

Gross profit as a percentage of revenue, or “gross margin,” continues to be susceptible to quarterly fluctuation due to a number of factors. Gross margin can vary significantly depending upon the mix and concentration of revenue by segment or product line, the concentration of lower margin common equipment sales within a segment or product line, geographic mix and the mix of customers and services in a given fiscal quarter. Gross margin can also be affected by our introduction of new products, charges for excess and obsolete inventory, changes in warranty costs and sales volume. We expect that gross margins will be subject to fluctuation based on our level of success in driving cost reductions, rationalizing our supply chain and consolidating third party contract manufacturers and distribution sites as part of our effort to optimize combined operations with the MEN Business. Gross margin can also be adversely affected by the competitive environment and level of pricing pressure we encounter. The combination of the recent period of uncertain market conditions, recent constraints on customer capital expenditures and increased competition has resulted in a heightened customer focus on pricing and return on network investment, as customers address network traffic growth and strive to increase revenue and profit. Our exposure to pricing pressure has been most severe in metro and core applications for our Packet-Optical Transport platforms, particularly in international markets. As a result, in an effort to retain or secure customers, enter new markets or capture market share, in the past we have and in the future we may agree to pricing or other unfavorable commercial terms that result in lower or negative gross margins on a particular order or group of orders. Because Packet-Optical Transport and international revenue comprise a greater percentage of our overall revenue than in prior periods, these market dynamics may adversely affect our gross margins and results of operations in certain periods.

Service gross margin can be affected by the mix of customers and services, particularly the mix between deployment and maintenance services, geographic mix and the timing and extent of any investments in internal resources to support this business.

The tables below (in thousands, except percentage data) set forth the changes in revenue, cost of goods sold and gross profit for the periods indicated:


	Quarter Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
Total revenue	$	253,471		100.0	$	417,894		100.0	$	164,423		64.9
Total cost of goods sold		148,529		58.6		252,061		60.3		103,532		69.7

Gross profit	$	104,942		41.4	$	165,833		39.7	$	60,891		58.0


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011


	Quarter Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
Product revenue	$	206,420		100.0	$	336,026		100.0	$	129,606		62.8
Product cost of goods sold		118,221		57.3		202,665		60.3		84,444		71.4

Product gross profit	$	88,199		42.7	$	133,361		39.7	$	45,162		51.2


*		Denotes % of product revenue

**		Denotes % change from 2010 to 2011


	Quarter Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
Service revenue	$	47,051		100.0	$	81,868		100.0	$	34,817		74.0
Service cost of goods sold		30,308		64.4		49,396		60.3		19,088		63.0

Service gross profit	$	16,743		35.6	$	32,472		39.7	$	15,729		93.9


*		Denotes % of service revenue

**		Denotes % change from 2010 to 2011

	•		Gross profit as a percentage of revenue decreased due to lower product gross margins described below, partially offset by improved service gross margin.

	•		Gross profit on products as a percentage of product revenue was adversely affected by an increased concentration of revenue from our Packet-Optical Transport segment and initial deployments of lower margin common equipment within this segment as part of our strategy to gain new customers, enter new markets or capture market share for our 40G and 100G coherent optical transport solutions. Gross profit for the second quarter of fiscal 2010 was adversely affected by an $11.1 million increase in costs of goods sold due to the required valuation of acquired finished goods inventory of the MEN Business to fair value and $6.6 million of higher than typical excess and obsolete inventory charges and excess purchase commitment losses on Ciena’s pre-acquisition inventory relating to product rationalization decisions upon the closing of the MEN Acquisition.

	•		Gross profit on services as a percentage of services revenue increased due to higher concentration of maintenance support and professional services as a percentage of revenue, and improved operational efficiencies.

Operating Expense

Research and development expense primarily consists of salaries and related employee expense (including share-based compensation expense), prototype costs relating to design, development, testing of our products, depreciation expense and third-party consulting costs.

Sales and marketing expense primarily consists of salaries, commissions and related employee expense (including share-based compensation expense), and sales and marketing support expense, including travel, demonstration units, trade show expense, and third-party consulting costs.

General and administrative expense primarily consists of salaries and related employee expense (including share-based compensation expense), and costs for third-party consulting and other services.

Amortization of intangible assets primarily reflects purchased technology and customer relationships from our acquisitions.

The table below (in thousands, except percentage data) sets forth the changes in operating expense for the periods indicated:


	Quarter Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)			%**
Research and development	$	71,142		28.1	$	99,624		23.8	$	28,482			40.0
Selling and marketing		45,328		17.9		61,768		14.8		16,440			36.3
General and administrative		21,503		8.5		32,480		7.8		10,977			51.0
Acquisition and integration costs		39,221		15.5		10,741		2.6		(28,480	)		(72.6	)
Amortization of intangible assets		17,121		6.8		13,674		3.3		(3,447	)		(20.1	)
Restructuring costs		1,849		0.7		3,164		0.8		1,315			71.1

Total operating expenses	$	196,164		77.5	$	221,451		53.1	$	25,287			12.9


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

	•		Research and development expense was adversely affected by $3.8 million in foreign exchange rates, primarily due to the weakening of the U.S. dollar in relation to the Canadian dollar. The $28.5 million increase primarily reflects increases of $17.2 million in employee compensation and related costs, $5.1 million in professional services and fees, $4.2 million in facilities and information systems and $2.8 million in depreciation expense, partially offset by a $1.0 million decrease in prototype expense.

	•		Selling and marketing expense was adversely affected by $1.1 million in foreign exchange rates primarily due to the weakening of the U.S. dollar in relation to the Euro and the Canadian dollar. The $16.4 million increase primarily reflects increases of $11.0 million in employee compensation and related costs, $2.2 million in travel-related expenditures, $1.6 million in facilities and information systems, and $1.6 million in channel marketing programs expense and trade show costs.

	•		General and administrative expense increased by $7.5 million in employee compensation and related costs and $2.5 million in consulting expense.

	•		Acquisition and integration costs principally consist of transaction, consulting and third party service fees related to the integration of the MEN Business into the combined operations.

	•		Amortization of intangible assets decreased due to certain intangible assets from the MEN Acquisition reaching the end of their economic lives. See Note 3 to our Condensed Consolidated Financial Statements in Item 1 of Part I of this report.

	•		Restructuring costs primarily reflect the headcount reductions and restructuring activities described in Note 4 to our Condensed Consolidated Financial Statements in Item 1 of Part I of this report.

Other items

The table below (in thousands, except percentage data) sets forth the changes in other items for the periods indicated:


	Quarter Ended April 30,										Increase
	2010			%*			2011		%*		(decrease)		%**
Interest and other income (loss), net	$	3,748			1.5		$	4,229		1.0	$	481		12.8
Interest expense	$	4,113			1.6		$	9,406		2.3	$	5,293		128.7
Provision (benefit) for income taxes	$	(1,578	)		(0.6	)	$	1,891		0.5	$	3,469		(219.8	)


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

	•		Interest and other income (loss), net is a result of changes in non-cash gain or losses related to the change in fair value of the embedded redemption feature associated with our 4.0% convertible senior notes due March 15, 2015 and the effect of foreign exchange rates on assets and liabilities denominated in a currency other than the relevant functional currency. See Notes 6 and 14 to the Condensed Consolidated Financial Statements found under Item 1 of Part I of this report for more information regarding the issuance of these convertible notes and the fair value of the redemption feature contained therein.

	•		Interest expense increased due to our private placements during fiscal 2010 of $375.0 million in aggregate principal amount of 4.0% convertible senior notes on March 15, 2010 and $350.0 million in aggregate principal amount of 3.75% convertible senior notes on October 18, 2010. See Note 14 to the Condensed Consolidated Financial Statements found under Item 1 of Part I of this report.

	•		Provision for income taxes increased primarily due to increased foreign taxes and the reductions in benefits due to the expiration of the statute of limitations applicable to the acquired, uncertain tax contingency during the second quarter of fiscal 2010.

Six months ended April 30, 2010 compared to the six months ended April 30, 2011

Revenue

The table below (in thousands, except percentage data) sets forth the changes in our operating segment revenue for the periods indicated:


	Six Months Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)			%**
Revenue:
Packet-Optical Transport	$	181,159		42.2	$	559,116		65.7	$	377,957			208.6
Packet-Optical Switching		55,832		13.0		66,541		7.8		10,709			19.2
Carrier Ethernet Service Delivery		115,245		26.8		58,559		6.9		(56,686	)		(49.2	)
Software and Services		77,111		18.0		166,986		19.6		89,875			116.6

Consolidated revenue	$	429,347		100.0	$	851,202		100.0	$	421,855			98.3


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

	•		Packet-Optical Transport revenue increased reflecting a $279.4 million increase in sales of our ActivFlex 6500, largely driven by service provider demand for high-capacity, optical transport, including coherent 40G and 100G network infrastructures. Packet-Optical Transport revenue also benefited from sales increases of $46.9 million in ActivSpan 5200, $29.9 million in CPL, $17.1 million in ActivFlex 6110, and $16.8 million in legacy transport products. These increases were partially offset by decreases of $8.2 million in Corestream and $3.9 million in ActivSpan 4200.

	•		Packet-Optical Switching revenue reflects a $9.1 million increase in CoreDirector revenue and the addition of $1.6 million related to ActivFlex 5430, our ultra high-capacity, multi-terabit platform that can be configured to support any mix of OTN, SONET/SDH and Ethernet/MPLS. Revenue for these products remains subject to fluctuation due to customer concentration and the effect of the timing of customer buying cycles for the relatively nascent technology adoption of our next-generation products within this segment.

	•		Carrier Ethernet Service Delivery revenue reflects decreases of $65.4 million in sales of our ActivEdge 3000 service-delivery switches and ActivEdge 5000 service aggregation switches. Carrier Ethernet Service Delivery revenue benefited from $6.3 million in initial revenue from the introduction of the ActivEdge 5410 Service Aggregation Switch, our high-capacity, Carrier Ethernet configuration for the 5400 family to support wireless backhaul, Ethernet business services, and residential broadband applications.

	•		Software and Services revenue increased reflecting a $63.8 million increase in maintenance support revenue and $26.1 million in installation, deployment and consulting services.


	Six Months Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
United States	$	304,435		70.9	$	451,150		53.0	$	146,715		48.2
International		124,912		29.1		400,052		47.0		275,140		220.3

Total	$	429,347		100.0	$	851,202		100.0	$	421,855		98.3


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

	•		United States revenue increased primarily due to a $165.0 million increase in sales of Packet-Optical Transport products, a $38.9 million increase in services revenue, and a $2.6 million increase in Packet-Optical Switching revenue. These increases were partially offset by a $59.3 million decrease in Carrier Ethernet Service Delivery sales.

	•		International revenue increased primarily due to a $213.0 million increase in Packet-Optical Transport revenue, a $49.9 million increase in services revenue, and a $8.1 million increase in sales of Packet-Optical Switching products. Increased Packet-Optical Transport and services revenue principally reflect the addition of the MEN Business.

Cost of Goods Sold and Gross Profit

The tables below (in thousands, except percentage data) set forth the changes in revenue, cost of goods sold and gross profit for the periods indicated:


	Six Months Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
Total revenue	$	429,347		100.0	$	851,202		100.0	$	421,855		98.3
Total cost of goods sold		244,245		56.9		516,863		60.7		272,618		111.6

Gross profit	$	185,102		43.1	$	334,339		39.3	$	149,237		80.6


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011


	Six Months Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
Product revenue	$	355,474		100.0	$	688,453		100.0	$	332,979		93.7
Product cost of goods sold		194,890		54.8		417,066		60.6		222,176		114.0

Product gross profit	$	160,584		45.2	$	271,387		39.4	$	110,803		69.0


*		Denotes % of product revenue

**		Denotes % change from 2010 to 2011


	Six Months Ended April 30,								Increase
	2010		%*		2011		%*		(decrease)		%**
Service revenue	$	73,873		100.0	$	162,749		100.0	$	88,876		120.3
Service cost of goods sold		49,355		66.8		99,797		61.3		50,442		102.2

Service gross profit	$	24,518		33.2	$	62,952		38.7	$	38,434		156.8


*		Denotes % of service revenue

**		Denotes % change from 2010 to 2011

	•		Gross profit as a percentage of revenue decreased due to lower product gross margins described below, partially offset by improved service gross margin.

	•		Gross profit on products as a percentage of product revenue was adversely affected by an increased concentration of revenue from our Packet-Optical Transport segment, resulting from the MEN Acquisition, and sales of lower margin common equipment within this segment as part of our strategy to gain new customers, enter new markets or capture market share for our 40G and 100G coherent optical transport solutions. Gross profit was also affected by a number of items relating to the MEN Acquisition that increased costs of goods sold during the first quarter of fiscal 2011. These items include increased amortization of intangible assets and the required revaluation of acquired finished goods inventory of the MEN Business to fair value as described above.

	•		Gross profit on services as a percentage of services revenue increased due to higher concentration of maintenance support and professional services as a percentage of revenue, and improved operational efficiencies.

Operating Expense

The table below (in thousands, except percentage data) sets forth the changes in operating expense for the periods indicated:


	Six Months Ended April 30,										Increase
	2010		%*		2011			%*			(decrease)			%**
Research and development	$	121,175		28.2	$	195,414			23.0		$	74,239			61.3
Selling and marketing		79,565		18.5		118,860			14.0			39,295			49.4
General and administrative		34,266		8.0		70,794			8.3			36,528			106.6
Acquisition and integration costs		66,252		15.4		34,926			4.1			(31,326	)		(47.3	)
Amortization of intangible assets		23,102		5.4		42,458			5.0			19,356			83.8
Restructuring costs		1,828		0.4		4,686			0.6			2,858			156.3
Change in fair value of contingent consideration		—		0.0		(3,289	)		(0.4	)		(3,289	)		100.0

Total operating expenses	$	326,188		75.9	$	463,849			54.6		$	137,661			42.2


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

	•		Research and development expense was adversely affected by $6.7 million in foreign exchange rates, primarily due to the weakening of the U.S. dollar in relation to the Canadian dollar. The $74.2 million increase primarily reflects increases of $44.2 million in employee compensation and related costs, $12.3 million in professional services and fees, $12.0 million in facilities and information systems, $6.7 million in depreciation expense, partially offset by a $1.5 million decrease in prototype expense.

	•		Selling and marketing expense increased by $39.3 million primarily reflecting increases of $25.2 million in employee compensation and related costs, $4.5 million in facilities and information systems, $4.2 million in travel-related expenditures, $2.9 million in channel marketing programs expense and trade show costs, 1.5 million in professional services and fees, and $1.1 million in depreciation expense.

	•		General and administrative expense increased by $15.3 million in employee compensation and related costs, $11.3 million in consulting expense, and $9.2 million in facilities and information systems expense.

	•		Acquisition and integration costs principally consist of transaction, consulting and third party service fees related to the integration of the MEN Business into the combined operations.

	•		Amortization of intangible assets decreased due to certain intangible assets from the MEN Acquisition reaching the end of their economic lives. See Note 3 to our Condensed Consolidated Financial Statements in Item 1 of Part I of this report.

	•		Restructuring costs primarily reflect the headcount reductions and restructuring activities described in Note 4 to our Condensed Consolidated Financial Statements in Item 1 of Part I of this report.

	•		Change in fair value of contingent consideration is related to the contingent refund right we received relating to the Carling lease entered into as part of the MEN Acquisition. See Note 3 to our Condensed Consolidated Financial Statements in Item 1 of Part I for additional information relating to Nortel’s exercise of its early termination of the Carling lease.

Other items

The table below (in thousands, except percentage data) sets forth the changes in other items for the periods indicated:


	Six Months Ended April 30,										Increase
	2010			%*			2011		%*		(decrease)		%**
Interest and other income (loss), net	$	2,975			0.7		$	10,494		1.2	$	7,519		252.7
Interest expense	$	5,941			1.4		$	18,956		2.2	$	13,015		219.1
Provision (benefit) for income taxes	$	(710	)		(0.2	)	$	3,770		0.4	$	4,480		(631.0	)


*		Denotes % of total revenue

**		Denotes % change from 2010 to 2011

	•		Interest and other income (loss), net reflects increases of $3.8 million due to the positive effect of foreign exchange rates on assets and liabilities denominated in a currency other than the relevant functional currency, and $2.5 million in non-cash gains related to the change in fair value of the redemption feature associated with our 4.0% convertible senior notes due March 15, 2015. Fiscal 2010 reflects a $2.0 million charge relating to the termination of an indemnification asset upon the expiration of the statute of limitations applicable to one of the uncertain tax contingencies acquired as part of the MEN Acquisitions. See Notes 6 and 14 to the Condensed Consolidated Financial Statements found under Item 1 of Part I of this report for more information regarding the issuance of these convertible notes and the fair value of the redemption feature contained therein.

	•		Interest expense increased due to our private placements during fiscal 2010 of $375.0 million in aggregate principal amount of 4.0% convertible senior notes on March 15, 2010 and $350.0 million in aggregate principal amount of 3.75% convertible senior notes on October 18, 2010. See Note 14 to the Condensed Consolidated Financial Statements found under Item 1 of Part I of this report.

	•		Provision for income taxes increased primarily due to increased foreign taxes and the reductions in benefits due to the expiration of the statute of limitations applicable to the acquired uncertain tax contingency during the second quarter of fiscal 2010.

Segment Profit (Loss)

The table below (in thousands, except percentage data) sets forth the changes in our segment profit (loss), including the presentation of prior periods to reflect the change in reportable segments, for the respective periods:


	Quarter Ended April 30,					Increase
	2010			2011		(decrease)			%*
Segment profit (loss):
Packet-Optical Transport	$	(6,595	)	$	36,506	$	43,101			653.5
Packet-Optical Switching	$	5,467		$	8,487	$	3,020			55.2
Carrier Ethernet Service Delivery	$	25,972		$	3,497	$	(22,475	)		(86.5	)
Software and Services	$	8,956		$	17,719	$	8,763			97.8


*		Denotes % change from 2010 to 2011

	•		Packet-Optical Transport segment profit was significantly affected by the MEN Acquisition. Segment profit increased due to higher sales volume, partially offset by lower product gross margin and increased research and development costs.

	•		Packet-Optical Switching segment profit increased due to higher sales volume, increased product gross margin and decreased research and development costs.

	•		Carrier Ethernet Service Delivery segment profit decreased due to lower sales volume and increased research and development costs partially offset by higher improved gross margin.

	•		Software and Services segment profit was significantly affected by the MEN Acquisition. Segment profit increased due to increased sales volume and improved gross margin, partially offset by increased research and development costs.


	Six Months Ended April 30,				Increase
	2010		2011		(decrease)			%*
Segment profit (loss):
Packet-Optical Transport	$	13,528	$	75,532	$	62,004			458.3
Packet-Optical Switching	$	3,429	$	21,364	$	17,935			523.0
Carrier Ethernet Service Delivery	$	34,854	$	5,890	$	(28,964	)		(83.1	)
Software and Services	$	12,116	$	36,139	$	24,023			198.3


*		Denotes % change from 2010 to 2011

	•		Packet-Optical Transport segment profit was significantly affected by the MEN Acquisition. Segment profit increased due to higher sales volume, partially offset by lower product gross margin and increased research and development costs.

	•		Packet-Optical Switching segment profit increased due to higher sales volume, increased product gross margin and decreased research and development costs.

	•		Carrier Ethernet Service Delivery segment profit decreased due to lower sales volume and increased research and development costs partially offset by higher improved gross margin.

	•		Software and Services segment profit was significantly affected by the MEN Acquisition. Segment profit increased due to increased sales volume and improved gross margin, partially offset by increased research and development costs.

Liquidity and Capital Resources

At April 30, 2011, our principal sources of liquidity were cash and cash equivalents and long-term investments in marketable debt securities, representing U.S. treasuries. The following table summarizes our cash and cash equivalents and long-term investments (in thousands):


	October 31,		April 30,		Increase
	2010		2011		(decrease)
Cash and cash equivalents	$	688,687	$	506,840	$	(181,847	)
Long-term investments in marketable debt securities		—		50,098		50,098

Total cash and cash equivalents and investments in marketable debt securities	$	688,687	$	556,938	$	(131,749	)

During the first six months of fiscal 2011, we received $33.5 million related to the early termination of the Carling lease, of which $17.1 million reduced cash used by operations and $16.4 million reduced cash used by investing activities. See Note 3 to our Condensed Consolidated Financial Statements in Item 1 of Part I for additional information relating to the valuation of this contingent refund right at closing of the MEN Acquisition and the early termination of the Carling lease.

The decrease in total cash and cash equivalents and investments in marketable debt securities during the first six months of fiscal 2011, including the effect of the receipt of the early termination payment above, was primarily related to the following:

	•		$115.4 million cash used from operations, consisting of $85.0 million for changes in working capital and $30.4 million from net losses (adjusted for non-cash charges). Use of cash reflects cash payments of $51.0 million of acquisition and integration-related expense and restructuring costs, of which $39.6 million was reflected in net losses (adjusted for non-cash charges) and $11.4 million was reflected in changes in working capital,

	•		$29.4 million for purchases of equipment, furniture, fixtures and intellectual property; and

	•		$11.9 million transferred to restricted cash as collateral for our standby letters of credit.

These decreases were partially offset by receipts of $7.5 million from the exercise of employee stock purchase plans and stock options.

Based on past performance and current expectations, we believe that our cash, cash equivalent and investments will satisfy our working capital needs, capital expenditures, and other liquidity requirements associated with

our existing operations through at least the next 12 months. As expected, the investment in working capital for the first six months of fiscal 2011 reflects the increased scale of our business as the result of the MEN Acquisition. We regularly evaluate our liquidity position, debt obligations, and anticipated cash needs to fund our operating plans and may consider capital raising and other market opportunities that may be available to us.

The following sections set forth the components of our $115.4 million of cash used by operating activities during the first six months of fiscal 2011:

Net loss (adjusted for non-cash charges)

The following tables set forth (in thousands) our net loss (adjusted for non-cash charges) during the period:


	Six months ended
	April 30,
	2011
Net loss	$	(141,742	)
Adjustments for non-cash charges:
Amortization of premium on marketable securities		(12	)
Change in fair value of embedded redemption feature		(9,160	)
Depreciation of equipment, furniture and fixtures, and amortization of leasehold improvements		29,367
Share-based compensation costs		18,886
Amortization of intangible assets		56,637
Provision for inventory excess and obsolescence		6,413
Provision for warranty		5,646
Other		3,474

Net losses (adjusted for non-cash charges)	$	(30,491	)

Working Capital

Accounts Receivable, Net

Cash used by accounts receivable, net of $0.7 million in allowance for doubtful accounts, during the first six months of fiscal 2011 was $48.4 million primarily due to higher sales volume. Our days sales outstanding (DSOs) increased from 75 days for the first six months of fiscal 2010 to 83 days for the first six months of fiscal 2011. Our DSOs increased due to a larger proportion of sales occurring later in our second quarter of fiscal 2011 and, to a lesser extent, an increase in international sales, which generally involve longer payment cycles. The following table sets forth (in thousands) changes to our accounts receivable, net of allowance for doubtful accounts, from the end of fiscal 2010 through the end of the second quarter of fiscal 2011:


	October 31,		April 30,		Increase
	2010		2011		(decrease)
Accounts receivable, net	$	343,582	$	391,330	$	47,748

Inventory

Cash consumed by inventory during the first six months of fiscal 2011 was $30.5 million due to increased inventory levels to support a higher sales volume. Our inventory turns increased from 1.7 turns during the first six months of fiscal 2010 to 2.9 turns during the first six months of fiscal 2011. During the first six months of fiscal 2011, changes in inventory reflect a $6.4 million reduction related to a non-cash provision for excess and obsolescence. The following table sets forth (in thousands) changes to the components of our inventory from the end of fiscal 2010 through the end of the second quarter of fiscal 2011:


	October 31,			April 30,			Increase
	2010			2011			(decrease)
Raw materials	$	30,569		$	40,106		$	9,537
Work-in-process		6,993			8,445			1,452
Finished goods		177,994			197,636			19,642
Deferred cost of goods sold		76,830			69,216			(7,614	)

Gross inventory		292,386			315,403			23,017
Provision for inventory excess and obsolescence		(30,767	)		(29,707	)		1,060

Inventory	$	261,619		$	285,696		$	24,077

Prepaid expense and other

Cash from operations generated by prepaid expense and other during the first six months of fiscal 2011 was $1.0 million. This usage was primarily related to increases in product demonstration units and value added tax receivables, partially offset by the receipt of the contingent refund receivable related to the Carling Lease termination.

Accounts payable, accruals and other obligations

Cash used in operations related to accounts payable, accruals and other obligations during the first six months of fiscal 2011 was $26.1 million. Between the end of fiscal 2010 and the second quarter of fiscal 2011, the change in unpaid equipment purchases was $2.0 million. Changes in accrued liabilities reflect non-cash provisions of $5.6 million related to warranties. The following table sets forth (in thousands) changes in our accounts payable, accruals and other obligations from the end of fiscal 2010 through the end of the second quarter of fiscal 2011:


	October 31,		April 30,		Increase
	2010		2011		(decrease)
Accounts payable	$	200,617	$	178,747	$	(21,870	)
Accrued liabilities		193,994		190,618		(3,376	)
Other long-term obligations		16,435		19,232		2,797

Accounts payable, accruals and other obligations	$	411,046	$	388,597	$	(22,449	)

Interest Payable on Convertible Notes

Interest on our outstanding 0.25% convertible senior notes, due May 1, 2013, is payable on May 1 and November 1 of each year. We paid $0.3 million in interest on these convertible notes during the first six months of fiscal 2011.

Interest on our outstanding 4.0% convertible senior notes, due March 15, 2015, is payable on March 15 and September 15 of each year. We paid $7.5 million in interest on these convertible notes during the first six months of fiscal 2011.

Interest on our outstanding 0.875% convertible senior notes, due June 15, 2017, is payable on June 15 and December 15 of each year. We paid $2.2 million in interest on these convertible notes during the first six months of fiscal 2011.

Interest on our outstanding 3.75% convertible senior notes, due October 15, 2018, is payable on April 15 and October 15 of each year. We paid $6.4 million in interest on these convertible notes during the first six months of fiscal 2011.

For additional information about our convertible notes, see Note 14 to the Condensed Consolidated Financial Statements under Item 1 of Part I of this report

Deferred revenue

Deferred revenue increased by $19.0 million during the first six months of fiscal 2011. Product deferred revenue represents payments received in advance of shipment and payments received in advance of our ability to recognize revenue. Services deferred revenue is related to payment for service contracts that will be recognized over the contract term. The following table reflects (in thousands) the balance of deferred revenue and the change in this balance from the end of fiscal 2010 through the end of the second quarter of fiscal 2011:


	October 31,		April 30,		Increase
	2010		2011		(decrease)
Products	$	31,187	$	39,001	$	7,814
Services		73,862		85,047		11,185

Total deferred revenue	$	105,049	$	124,048	$	18,999

Contractual Obligations

During the first quarter of fiscal 2011, we received notice from Nortel of the exercise of its early termination rights under the Carling lease, shortening our lease term from ten years to five years and materially reducing the operating lease commitments in the table below. The following is a summary of our future minimum payments under contractual obligations as of April 30, 2011 (in thousands):


			Less than one		One to three		Three to five
	Total		year		years		years		Thereafter
Interest due on convertible notes	$	188,227	$	33,041	$	65,811	$	50,000	$	39,375
Principal due at maturity on convertible notes		1,441,210		—		216,210		375,000		850,000
Operating leases (1)		116,446		33,460		54,199		22,706		6,081
Purchase obligations (2)		162,135		162,135		—		—		—

Total (3)	$	1,908,018	$	228,636	$	336,220	$	447,706	$	895,456


(1)		The amount for operating leases above does not include insurance, taxes, maintenance and other costs required by the applicable operating lease. These costs are variable and are not expected to have a material impact.

(2)		Purchase obligations relate to purchase order commitments to our contract manufacturers and component suppliers for inventory. In certain instances, we are permitted to cancel, reschedule or adjust these orders. Consequently, only a portion of the amount reported above relates to firm, non-cancelable and unconditional obligations.

(3)		As of April 30, 2011, we also had approximately $8.4 million of other long-term obligations in our Condensed Consolidated Balance Sheet for unrecognized tax positions that are not included in this table because the timing or amount of any cash settlement with the respective tax authority cannot be reasonably estimated.

Some of our commercial commitments, including some of the future minimum payments in operating leases set forth above and certain commitments to customers, are secured by standby letters of credit collateralized by restricted cash. Restricted cash balances are included in other current assets or other long-term assets depending upon the duration of the underlying letter of credit obligation. The following is a summary, as of April 30, 2011, of our commitments secured by standby letters of credit by expiration date (in thousands):


			Less than one		One to three		Three to five
	Total		year		years		years
Standby letters of credit	$	63,728	$	60,445	$	2,718	$	565

Off-Balance Sheet Arrangements

We do not engage in any off-balance sheet financing arrangements. In particular, we do not have any equity interests in so-called limited purpose entities, which include special purpose entities (SPEs) and structured finance entities.

Critical Accounting Policies and Estimates

The preparation of our consolidated financial statements requires that we make estimates and judgments that affect the reported amounts of assets, liabilities, revenue and expense, and related disclosure of contingent assets and liabilities. By their nature, these estimates and judgments are subject to an inherent degree of uncertainty. On an ongoing basis, we reevaluate our estimates, including those related to bad debts, inventories, intangible assets, income taxes, warranty obligations, restructuring, derivatives and hedging, and contingencies and litigation. We base our estimates on historical experience and on various other assumptions that we believe to be reasonable under the circumstances. Among other things, these estimates form the basis for judgments about the carrying values of assets and liabilities that are not readily apparent from other sources. Actual results may differ from these estimates under different assumptions or conditions. To the extent that there are material differences between our estimates and actual results, our consolidated financial statements will be affected.

We believe that the following critical accounting policies reflect those areas where significant judgments and estimates are used in the preparation of our consolidated financial statements.

Revenue Recognition

We recognize revenue when all of the following criteria are met: persuasive evidence of an arrangement exists; delivery has occurred or services have been rendered; the price to the buyer is fixed or determinable; and collectibility is reasonably assured. Customer purchase agreements and customer purchase orders are generally used to determine the existence of an arrangement. Shipping documents and evidence of customer acceptance, when applicable, are used to verify delivery or services rendered. We assess whether the price is fixed or determinable based on the payment terms associated with the transaction and whether the sales price is subject to refund or adjustment. We assess collectibility based primarily on the creditworthiness of the customer as determined by credit checks and analysis, as well as the customer’s payment history. Revenue for maintenance services is generally deferred and recognized ratably over the period during which the services are to be performed.

We apply the percentage of completion method to long-term arrangements where it is required to undertake significant production, customizations or modification engineering, and reasonable and reliable estimates of revenue and cost are available. Utilizing the percentage of completion method, we recognize revenue based on the ratio of actual costs incurred to date to total estimated costs expected to be incurred. In instances that do not meet the percentage of completion method criteria, recognition of revenue is deferred until there are no uncertainties regarding customer acceptance.

We limit the amount of revenue recognition for delivered elements to the amount that is not contingent on the future delivery of products or services, future performance obligations or subject to customer-specified return or refund privileges.

Accounting for multiple element arrangements entered into prior to fiscal 2011

Arrangements with customers may include multiple deliverables, including any combination of equipment, services and software. If multiple element arrangements include software or software-related elements that are essential to the equipment, we allocate the arrangement fee among separate units of accounting. Multiple element arrangements that include software are separated into more than one unit of accounting if the functionality of the delivered element(s) is not dependent on the undelivered element(s), there is vendor-specific objective evidence (“VSOE”) of the fair value of the undelivered element(s), and general revenue recognition criteria related to the delivered element(s) have been met. The amount of product and services revenue recognized is affected by our judgment as to whether an arrangement includes multiple elements and, if so, whether VSOE of fair value exists. VSOE is established based on our standard pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, we require that a substantial majority of the selling prices for a product or service fall within a reasonably narrow pricing range. Changes to the elements in an arrangement and our ability to establish VSOE for those elements could affect the timing of revenue recognition. For all other multiple element arrangements, we separate the elements into more than one unit of accounting if the delivered element(s) have value to the customer on a stand-alone basis, objective and reliable evidence of fair value exists for the undelivered element(s), and delivery of the undelivered element(s) is probable and substantially in our control. Revenue is allocated to each unit of accounting based on the relative fair value of each accounting unit or using the residual method if objective evidence of fair value does not exist for the delivered element(s). The revenue recognition criteria described above are applied to each separate unit of accounting. If these criteria are not met, revenue is deferred until the criteria are met or the last element has been delivered.

Accounting for multiple element arrangements entered into or materially modified in fiscal 2011

In October 2009, the Financial Accounting Standards Board, (“FASB”) amended the accounting standard for revenue recognition with multiple deliverables which provided guidance on how the arrangement fee should be allocated. The amended guidance allows the use of management’s best estimate of selling price (“BESP”) for individual elements of an arrangement when VSOE or third-party evidence (“TPE”) is unavailable. Additionally, it eliminates the residual method of revenue recognition in accounting for multiple deliverable arrangements. The FASB also amended the accounting guidance for revenue arrangements with software elements to exclude from the scope of the software revenue recognition guidance, tangible products that contain both software and non-software components that function together to deliver the product’s essential functionality.

We adopted the new accounting guidance on a prospective basis for arrangements entered into or materially modified on or after November 1, 2010. Under the new guidance, we separate elements into more than one unit of accounting if the delivered element(s) have value to the customer on a stand-alone basis, and delivery of the undelivered element(s) is probable and substantially in our control. Therefore, the new guidance allows for deliverables, for which revenue was previously deferred due to an absence of fair value, to be separated and recognized as revenue as delivered. Also, because the residual method has been eliminated, discounts offered are allocated to all deliverables, rather than to the delivered element(s). Our adoption of the new guidance for revenue arrangements changed the accounting for certain products that consist of hardware and software components, in which these components together provided the product’s essential functionality. For transactions involving these products entered into prior to fiscal 2011, we recognized revenue based on software revenue recognition guidance.

Revenue for multiple element arrangements is allocated to each unit of accounting based on the relative selling price of each element, with revenue recognized when the revenue recognition criteria are met for each delivered element. We determine the selling price for each deliverable based upon the selling price hierarchy for multiple-deliverable arrangements. Under this hierarchy, we use VSOE of selling price, if it exists, or TPE of selling price if VSOE does not exist. If neither VSOE nor TPE of selling price exists for a deliverable, we use our BESP for that deliverable.

VSOE is established based on our standard pricing and discounting practices for the specific product or service when sold separately. In determining VSOE, which exists across certain of our service offerings, we require that a substantial majority of the selling prices for a product or service fall within a reasonably narrow pricing range. We have generally been unable to establish TPE of selling price because our go-to-market strategy differs from that of others in our markets, and the extent of customization and differentiated features and functions varies among comparable products or services from our peers. We determine BESP based upon management-approved pricing guidelines, which consider multiple factors including the type of product or service, gross margin objectives, competitive and market conditions, and the go-to-market strategy; all of which can affect pricing practices.

Historically, for arrangements with multiple elements, we were typically able to establish fair value for undelivered elements and so we applied the residual method. As a result, assuming the adoption of the accounting guidance above on a prospective basis for arrangements entered into or materially modified on or after November 1, 2009, the effect on revenue recognized for the six months ended April 30, 2010 would not have been materially different.

The new accounting guidance for revenue recognition is not expected to have a significant effect on revenue after the initial period of adoption when applied to multiple—element arrangements based on our current go-to-market strategies. However, we expect that this new accounting guidance will facilitate our efforts to optimize our offerings due to the better alignment between the economics of an arrangement and the accounting. This may lead to engaging in new go-to-market practices in the future. In particular, we expect that the new accounting standards will enable us to better integrate products and services without VSOE into existing offerings and solutions. As these go-to-market strategies evolve, we may modify our pricing practices in the future, which could result in changes in selling prices, including both VSOE and BESP. As a result, our future revenue recognition for multiple-element arrangements could differ materially from the results in the current period. We are currently unable to determine the impact that the newly adopted accounting guidance could have on our revenue as these go-to-market strategies evolve.

Our total deferred revenue for products was $31.2 million and $39.0 million as of October 31, 2010 and April 30, 2011, respectively. Our services revenue is deferred and recognized ratably over the period during which the services are to be performed. Our total deferred revenue for services was $73.9 million and $85.0 million as of October 31, 2010 and April 30, 2011, respectively.

Business Combinations

We record acquisitions using the purchase method of accounting. All of the assets acquired, liabilities assumed, contractual contingencies and contingent consideration are recognized at their fair value as of the acquisition date. The excess of the purchase price over the estimated fair values of the net tangible and net intangible assets acquired is recorded as goodwill. The application of the purchase method of accounting for business combinations requires management to make significant estimates and assumptions in the determination of the fair value of assets acquired and liabilities assumed in order to properly allocate purchase price consideration between assets that are depreciated and amortized from goodwill. These assumptions and estimates include a market participant’s use of the asset and the appropriate discount rates for a market participant. Our estimates are based on historical experience, information obtained from the management of the acquired companies and, when appropriate, includes assistance from independent third-party appraisal firms. Our significant assumptions and estimates can include, but are not limited to, the cash flows that an asset is expected to generate in the future, the appropriate weighted-average cost of capital, and the cost savings expected to be derived from acquiring an asset.

These estimates are inherently uncertain and unpredictable. In addition, unanticipated events and circumstances may occur which may affect the accuracy or validity of such estimates. During fiscal 2010, we completed the MEN Acquisition for a purchase price of $676.8 million. As a result of the purchase price allocation to the assets acquired and liabilities assumed, as well as contingent consideration, there was no value assigned to goodwill. See Note 3 to the Condensed Consolidated Financial Statements included in Item 1 of Part I of this report.

Share-Based Compensation

We measure and recognize compensation expense for share-based awards based on estimated fair values on the date of grant. We estimate the fair value of each option-based award on the date of grant using the Black-Scholes option-pricing model. This option pricing model requires that we make several estimates, including the option’s expected life and the price volatility of the underlying stock. The expected life of employee stock options represents the weighted-average period the stock options are expected to remain outstanding. We calculate the expected term using detailed historical information about specific exercise behavior of our grantees. We considered the implied volatility and historical volatility of our stock price in determining our expected volatility, and, finding both to be equally reliable, determined that a combination of both measures would result in the best estimate of expected volatility. We recognize the estimated fair value of option-based awards, net of estimated forfeitures, as share-based compensation expense on a straight-line basis over the requisite service period.

We estimate the fair value of our restricted stock unit awards based on the fair value of our common stock on the date of grant. Our outstanding restricted stock unit awards are subject to service-based vesting conditions and/or performance-based vesting conditions. We recognize the estimated fair value of service-based awards, net of estimated forfeitures, as share-based expense ratably over the vesting period on a straight-line basis. Awards with performance-based vesting conditions require the achievement of certain financial or other performance criteria or targets as a condition to the vesting, or acceleration of vesting. We recognize the estimated fair value of performance-based awards, net of estimated forfeitures, as share-based expense over the performance period, using graded vesting, which considers each performance period or tranche separately, based upon our determination of whether it is probable that the performance targets will be achieved. At each reporting period, we reassess the probability of achieving the performance targets and the performance period required to meet those targets. Determining whether the performance targets will be achieved involves judgment, and the estimate of expense may be revised periodically based on changes in the probability of achieving the performance targets. Revisions are reflected in the period in which the estimate is changed. If any performance goals are not met, no compensation cost is ultimately recognized against that goal, and, to the extent previously recognized, compensation cost is reversed.

Because share-based compensation expense is based on awards that are ultimately expected to vest, the amount of expense takes into account estimated forfeitures. We estimate forfeitures at the time of grant and revise, if necessary, in subsequent periods if actual forfeitures differ from those estimates. Changes in these estimates and assumptions can materially affect the measure of estimated fair value of our share-based compensation. See Note 16 to our Condensed Consolidated Financial Statements in Item 1 of Part I of this report for information regarding our assumptions related to share-based compensation and the amount of share-based compensation expense we incurred for the periods covered in this report. As of April 30, 2011, total unrecognized compensation expense was $71.7 million: (i) $2.8 million, which relates to unvested stock options and is expected to be recognized over a weighted-average period of 0.6 year; and (ii) $68.9 million, which relates to unvested restricted stock units and is expected to be recognized over a weighted-average period of 1.7 years.

We recognize windfall tax benefits associated with the exercise of stock options or release of restricted stock units directly to stockholders’ equity only when realized. A windfall tax benefit occurs when the actual tax benefit realized by us upon an employee’s disposition of a share-based award exceeds the deferred tax asset, if any, associated with the award that we had recorded. When assessing whether a tax benefit relating to share-based compensation has been realized, we follow the tax law “with-and-without” method. Under the with-and-without method, the windfall is considered realized and recognized for financial statement purposes only when an incremental benefit is provided after considering all other tax benefits including our net operating losses. The with-and-without method results in the windfall from share-based compensation awards always being effectively the last tax benefit to be considered. Consequently, the windfall attributable to share-based compensation will not be considered realized in instances where our net operating loss carryover (that is unrelated to windfalls) is sufficient to offset the current year’s taxable income before considering the effects of current-year windfalls.

Reserve for Inventory Obsolescence

We make estimates about future customer demand for our products when establishing the appropriate reserve for excess and obsolete inventory. We write down inventory that has become obsolete or unmarketable by an amount equal to the difference between the cost of inventory and the estimated market value based on assumptions about future demand and market conditions. Inventory write downs are a component of our product cost of goods sold. Upon recognition of the write

down, a new lower cost basis for that inventory is established, and subsequent changes in facts and circumstances do not result in the restoration or increase in that newly established cost basis. We recorded charges for excess and obsolete inventory of $7.1 million and $6.4 million in the first six months of fiscal 2010 and 2011, respectively. These charges were primarily related to excess inventory due to a change in forecasted sales across our product line. In an effort to limit our exposure to delivery delays and to satisfy customer needs we purchase inventory based on forecasted sales across our product lines. In addition, part of our research and development strategy is to promote the convergence of similar features and functionalities across our product lines. Each of these practices exposes us to the risk that our customers will not order products for which we have forecasted sales, or will purchase less than we have forecasted. Historically, we have experienced write downs due to changes in strategic direction, discontinuance of a product and declines in market conditions. If actual market conditions worsen or differ from those we have assumed, if there is a sudden and significant decrease in demand for our products, or if there is a higher incidence of inventory obsolescence due to a rapid change in technology, we may be required to take additional inventory write-downs, and our gross margin could be adversely affected. Our inventory net of allowance for excess and obsolescence was $261.6 million and $285.7 million as of October 31, 2010 and April 30, 2011, respectively.

Allowance for Doubtful Accounts Receivable

Our allowance for doubtful accounts receivable is based on management’s assessment, on a specific identification basis, of the collectibility of customer accounts. We perform ongoing credit evaluations of our customers and generally have not required collateral or other forms of security from customers. In determining the appropriate balance for our allowance for doubtful accounts receivable, management considers each individual customer account receivable in order to determine collectibility. In doing so, we consider creditworthiness, payment history, account activity and communication with such customer. If a customer’s financial condition changes, or if actual defaults are higher than our historical experience, we may be required to take a charge for an allowance for doubtful accounts receivable which could have an adverse impact on our results of operations. Our accounts receivable net of allowance for doubtful accounts was $343.6 million and $391.3 million as of October 31, 2010 and April 30, 2011, respectively. Our allowance for doubtful accounts was $0.1 million and $0.7 million as of October 31, 2010 and April 30, 2011, respectively.

Long-lived Assets

Our long-lived assets include: equipment, furniture and fixtures; finite-lived intangible assets; and maintenance spares. As of October 31, 2010 and April 30, 2011 these assets totaled $600.4 million and $546.8 million, net, respectively. We test long-lived assets for impairment whenever events or changes in circumstances indicate that the assets’ carrying amount is not recoverable from its undiscounted cash flows. Our long-lived assets are assigned to asset groups which represents the lowest level for which we identify cash flows.

Derivatives

Our 4.0% convertible senior notes include a redemption feature that is accounted for as a separate embedded derivative. The embedded redemption feature is bifurcated from these notes using the “with-and-without” approach. As such, the total value of the embedded redemption feature is calculated as the difference between the value of these notes (the “Hybrid Instrument”) and the value of an identical instrument without the embedded redemption feature (the “Host Instrument”). Both the Host Instrument and the Hybrid Instrument are valued using a modified binomial model. The modified binomial model utilizes a risk free interest rate, an implied volatility of our stock, the recovery rates of bonds, and the implied default intensity of the 4.0% convertible senior notes. The embedded redemption feature is recorded at fair value on a recurring basis and these changes are included in interest and other income (expense), net on the Condensed Consolidated Statement of Operations. We recorded a $9.2 million non-cash gain related to the change in fair value of this embedded redemption feature in the first six months of fiscal 2011.

Deferred Tax Valuation Allowance

As of April 30, 2011, we have recorded a valuation allowance offsetting nearly all our net deferred tax assets of $1.4 billion. When measuring the need for a valuation allowance, we assess both positive and negative evidence regarding the realizability of these deferred tax assets. We record a valuation allowance to reduce our deferred tax assets to the amount that is more likely than not to be realized. In determining net deferred tax assets and valuation allowances, management is required to make judgments and estimates related to projections of profitability, the timing and extent of the utilization of net operating loss carryforwards, applicable tax rates, transfer pricing methodologies and tax planning strategies. The valuation allowance is reviewed quarterly and is maintained until sufficient positive evidence exists to support a reversal. Because evidence such as our operating results during the most recent three-year period is afforded more weight than forecasted results for future periods, our cumulative loss during this three-year period represents sufficient negative evidence regarding the need for nearly a full valuation allowance. We will release this valuation allowance when management determines that it is more likely than not that our deferred tax assets will be realized. Any future release of valuation allowance may be recorded as a tax benefit increasing net income or as an adjustment to paid-in capital, based on tax ordering requirements.

Uncertain Tax Positions

We account for uncertainty in income tax positions using a two-step approach. The first step is to evaluate the tax position for recognition by determining if the weight of available evidence indicates that it is more likely than not that the position will be sustained on audit, including resolution of related appeals or litigation processes, if any. The second step is to measure the tax benefit as the largest amount that is more than 50% likely of being realized upon settlement. Significant judgment is required in evaluating our uncertain tax positions and determining our provision for income taxes. Although we believe our reserves are reasonable, no assurance can be given that the final tax outcome of these matters will not be different from that which is reflected in our historical income tax provisions and accruals. We adjust these reserves in light of changing facts and circumstances, such as the closing of a tax audit or the refinement of an estimate. To the extent that the final tax outcome of these matters is different than the amounts recorded, such differences will affect the provision for income taxes in the period in which such determination is made. As of April 30, 2011, we had $0.9 million and $8.4 million recorded as current and long-term obligations, respectively, related to uncertain tax positions. The provision for income taxes includes the effect of reserve provisions and changes to reserves that are considered appropriate, as well as the related net interest. The total amount of unrecognized tax benefits as of April 30, 2011 was $9.3 million, which includes $1.5 million of interest and some minor penalties.

Warranty

Our liability for product warranties, included in other accrued liabilities, was $54.4 million and $47.3 million as of October 31, 2010 and April 30, 2011, respectively. Our products are generally covered by a warranty for periods ranging from one to five years. We accrue for warranty costs as part of our cost of goods sold based on associated material costs, technical support labor costs, and associated overhead. Material cost is estimated based primarily upon historical trends in the volume of product returns within the warranty period and the cost to repair or replace the equipment. Technical support labor cost is estimated based primarily upon historical trends and the cost to support the customer cases within the warranty period. The provision for product warranties was $8.8 million and $5.6 million for the first six months of fiscal 2010 and 2011, respectively. As a result of the substantial completion of integration activities related to the MEN Acquisition, Ciena consolidated certain support operations and processes during the first quarter of fiscal 2011, resulting in a reduction in costs to service future warranty obligations. Due to this consolidation and resulting efficiencies, Ciena expects to realize lower failure rate costs and accordingly reversed a $6.9 million non-cash loss contingency included in its warranty liability. The provision for warranty claims may fluctuate on a quarterly basis depending upon the mix of products and customers in that period. If actual product failure rates, material replacement costs, service or labor costs differ from our estimates, revisions to

the estimated warranty provision would be required. An increase in warranty claims or the related costs associated with satisfying these warranty obligations could increase our cost of sales and negatively affect our gross margin.

Loss Contingencies

We are subject to the possibility of various losses arising in the ordinary course of business. These may relate to disputes, litigation and other legal actions. We consider the likelihood of loss or the incurrence of a liability, as well as our ability to reasonably estimate the amount of loss, in determining loss contingencies. A loss is accrued when it is probable that a liability has been incurred and the amount of loss can be reasonably estimated. We regularly evaluate current information available to us to determine whether any accruals should be adjusted and whether new accruals are required.


*Item 3.*		*Quantitative and Qualitative Disclosures About Market Risk*

The following discussion about our market risk disclosures involves forward-looking statements. Actual results could differ materially from those projected in the forward-looking statements. We are exposed to market risk related to changes in interest rates and foreign currency exchange rates.

Interest Rate Sensitivity. We currently hold an investment in a U.S. Government obligation that matures in January 2013. See Notes 5 and 6 to our Condensed Consolidated Financial Statements for information relating to investments and fair value. This investment is sensitive to interest rate movements and its fair value will decline as interest rates rise and increase as interest rates decline. The estimated impact on this investment of a 100 basis point (1.0%) increase in interest rates across the yield curve from rates in effect as of the balance sheet date would be a $0.9 million decline in value.

Foreign Currency Exchange Risk. As a global concern, our business and results of operations are exposed to adverse movements in foreign currency exchange rates. Historically, our sales have primarily been denominated in U.S. dollars and the impact of foreign currency fluctuations on revenue has not been material. As a result of our increased global presence, in large part resulting from the MEN Acquisition, a larger percentage of our revenue is non-U.S. dollar denominated with Canadian Dollars and Euros being our most significant foreign currency revenue streams. As a result, if the U.S. dollar strengthens against these currencies, our revenues could be adversely affected. For our U.S. dollar denominated sales, an increase in the value of the U.S. dollar would increase the real cost to our customers of our products in markets outside the United States which could impact our competitive position.

With regard to operating expense, our primary exposure to foreign currency exchange risk relates to operating expense incurred in Canadian Dollars, British Pounds, Euros and Indian Rupees. During the first six months of fiscal 2011, approximately 43.9% of our operating expense was non-U.S. dollar denominated. If these currencies strengthen, costs reported in U.S. dollars will increase, which would adversely affect our operating results. For the first six months of fiscal 2011, research and development was negatively affected by approximately $6.7 million, net of hedging, respectively due to unfavorable foreign exchange rates related to the weakening of the U.S. dollar in relation to the Canadian Dollar.

From time to time, Ciena uses foreign currency forward contracts to reduce part of the variability in certain forecasted non-US dollar denominated operating expenses. Generally, these derivatives are for maturities 12 months or less and are designated as cash flow hedges. Ciena considers several factors when evaluating hedges of its forecasted foreign currency exposures, such as significance of the exposure, offsetting economic exposures, potential costs of hedging, and the potential for hedge ineffectiveness. Ciena does not enter into derivative transactions for purposes other than hedging economic exposures. During the second quarter of fiscal 2011, Ciena entered into forward contracts to reduce the variability in its Canadian Dollar and Indian Rupee denominated operating expenses which principally relate to the Company’s research and development activities.

Convertible Debt Outstanding. The fair market value of each of our outstanding issues of convertible notes is subject to interest rate and market price risk due to the convertible feature of the notes and other factors. Generally the fair market value of fixed interest rate debt will increase as interest rates fall and decrease as interest rates rise. The fair market value of the notes may also increase as the market price of our stock rises and decrease as the market price of the stock falls. Interest rate and market value changes affect the fair market value of the notes, and may affect the prices at which we would be able to repurchase such notes were we to do so. These changes do not impact our financial position, cash flows or results of

operations. For additional information on the fair value of our outstanding notes, see Note 14 to our Condensed Consolidated Financial Statements included in Item 1 of Part I of this report.


*Item 4.*		*Controls and Procedures*

Disclosure Controls and Procedures

As of the end of the period covered by this report, we carried out an evaluation under the supervision and with the participation of management, including our Chief Executive Officer and Chief Financial Officer, of our disclosure controls and procedures (as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended). Based upon this evaluation, our Chief Executive Officer and Chief Financial Officer concluded that our disclosure controls and procedures were effective as of the end of the period covered by this report.

Changes in Internal Control over Financial Reporting

There were no changes in our internal control over financial reporting (as defined in Rules 13a-15(f) and 15d-15(f) under the Securities Exchange Act of 1934, as amended) during the most recently completed fiscal quarter that has materially affected, or is reasonably likely to materially affect, our internal control over financial reporting.

As described elsewhere in this report, we acquired the MEN Business on March 19, 2010. During the second quarter of fiscal 2011, we integrated the MEN Business operations into Ciena’s enterprise resource planning system and other critical business systems. This system integration enabled us to substantially end our reliance upon transition services performed by an affiliate of Nortel following the MEN Acquisition and represented the completion of our critical integration milestones. The combined operations will be part of our evaluation of the effectiveness of internal control over financial reporting in our Annual Report on Form 10-K for our fiscal year ending October 31, 2011, in which report we will be initially required to include the MEN Business in our annual assessment.

PART II — OTHER INFORMATION


*Item 1.*		*Legal Proceedings*

On May 29, 2008, Graywire, LLC filed a complaint in the United States District Court for the Northern District of Georgia against Ciena and four other defendants, alleging, among other things, that certain of the parties’ products infringe U.S. Patent 6,542,673 (the “‘673 Patent”), relating to an identifier system and components for optical assemblies. The complaint, which seeks injunctive relief and damages, was served upon Ciena on January 20, 2009. Ciena filed an answer to the complaint and counterclaims against Graywire on March 26, 2009, and an amended answer and counterclaims on April 17, 2009. On April 27, 2009, Ciena and certain other defendants filed an application for inter partes reexamination of the ‘673 Patent with the U.S. Patent and Trademark Office (the “PTO”). On the same date, Ciena and the other defendants filed a motion to stay the case pending reexamination of all of the patents-in-suit. On July 17, 2009, the district court granted the defendants’ motion to stay the case. On July 23, 2009, the PTO granted the defendants’ application for reexamination with respect to certain claims of the ‘673 Patent. On March 17, 2011, the PTO granted a third party application for reexamination with respect to one claim of the ‘673 Patent. We believe that we have valid defenses to the lawsuit and intend to defend it vigorously in the event the stay of the case is lifted.

As a result of our June 2002 merger with ONI Systems Corp., we became a defendant in a securities class action lawsuit filed in the United States District Court for the Southern District of New York in August 2001. The complaint named ONI, certain former ONI officers, and certain underwriters of ONI’s initial public offering (IPO) as defendants, and alleges, among other things, that the underwriter defendants violated the securities laws by failing to disclose alleged compensation arrangements in ONI’s registration statement and by engaging in manipulative practices to artificially inflate ONI’s stock price after the IPO. The complaint also alleges that ONI and the named former officers violated the securities laws by failing to disclose the underwriters’ alleged compensation arrangements and manipulative practices. The former ONI officers have been dismissed from the action without prejudice. Similar complaints have been filed against more than 300 other issuers that have had initial public offerings since 1998, and all of these actions have been included in a single coordinated proceeding. On October 6, 2009, the Court entered an opinion granting final approval to a settlement among the plaintiffs, issuer defendants and underwriter defendants, and directing that the Clerk of the Court close these actions. Notices of appeal of the opinion granting final approval have been filed, all of which have been either resolved or dismissed, except one. A description of this litigation and the history of the proceedings can be found in “Item 3. Legal Proceedings” of Part I of Ciena’s Annual Report on Form 10-K filed with the Securities and Exchange Commission on December 22, 2010. No specific amount of damages has been claimed in this action. Due to the inherent uncertainties of litigation and because the settlement remains subject to appeal, the ultimate outcome of the matter is uncertain.

In addition to the matters described above, we are subject to various legal proceedings, claims and litigation arising in the ordinary course of business. We do not expect that the ultimate costs to resolve these matters will have a material effect on our results of operations, financial position or cash flows.

Item 1A. Risk Factors

Investing in our securities involves a high degree of risk. In addition to the other information contained in this report, you should consider the following risk factors before investing in our securities.

A small number of communications service providers account for a significant portion of our revenue and the loss of any of these customers, or a significant reduction in their spending, would have a material adverse effect on our business and results of operations.

A significant portion of our revenue is concentrated among a few, large global communications service providers. By way of example, AT&T accounted for approximately 21.6% of fiscal 2010 revenue. Consequently, our financial results are closely correlated with the spending of a relatively small number of service providers and can be significantly affected by market or industry changes that affect their businesses. These factors can include consumer and enterprise spending on communication services, the introduction and adoption of new communications products and services, and the capacity requirements and speed of networks required to meet end user demands. The terms of our frame contracts generally do not obligate these customers to purchase any minimum or specific amounts of equipment or services. Because spending by communications service providers can be unpredictable and sporadic, our revenue and operating results can fluctuate on a quarterly basis. Reliance upon a relatively small number of customers increases our exposure to changes in their network and purchasing strategies. Some of our customers are pursuing efforts to outsource the management and operation of their networks, or have indicated a procurement strategy to reduce or rationalize the number of vendors from which they purchase equipment. These strategies may present challenges to our business and could benefit our larger competitors. Our concentration in revenue has increased in recent years, in part, as a result of consolidations among a number of our largest customers. Consolidations may increase the likelihood of temporary or indefinite reductions in customer spending or changes in network strategy that could harm our business and operating results. The loss of one or more large service provider customers, or a significant reduction in their spending, would have a material adverse effect on our business, financial condition and results of operations.

Our revenue and operating results can fluctuate unpredictably from quarter to quarter.

Our revenue and results of operations can fluctuate unpredictably from quarter to quarter. Our budgeted expense levels depend in part on our expectations of long-term, future revenue and gross margin, and substantial reductions in expense are difficult and can take time to implement. Uncertainty or lack of visibility into customer spending, and changes in economic or market conditions that affect customer spending, can make it difficult to prepare reliable estimates of future revenue and corresponding expense levels. Consequently, our level of operating expense or inventory purchases may be high relative to our revenue, which could harm our profitability and cash flow. Lower levels of backlog orders resulting from periods of cautious customer spending and the consequent need to increase the percentage of quarterly revenue relating to orders placed in that quarter could result in more variability and less predictability in our quarterly results.

Additional factors that contribute to fluctuations in our revenue and operating results include:

	•		broader economic and market conditions affecting our customers, their business and their networks;

	•		changes in capital spending by large communications service providers;

	•		the timing and size of orders, including our ability to recognize revenue under customer contracts;

	•		variations in the mix between higher and lower margin products and services, including the mix of revenue by segment, geography and customer;

	•		the level of pricing pressure we encounter, particularly for our Packet-Optical Transport products which comprise a significant concentration of our revenue;

	•		the transition of sales from legacy to new, next-generation technology platforms; and

	•		our ability to optimize our resources, improve manufacturing efficiencies and achieve cost reductions in our supply chain.

Many factors affecting our results of operations are beyond our control, particularly in the case of large service provider orders and multi-vendor or multi-technology network infrastructure builds where the achievement of certain thresholds for acceptance is subject to the readiness and performance of the customer or other providers, and changes in customer requirements or installation plans. The factors above may cause our revenue and operating results to fluctuate unpredictably from quarter to quarter. These fluctuations may cause our operating results to be below the expectations of securities analysts or investors, which may cause our stock price to decline.

We face intense competition that could hurt our sales and results of operations.

The markets in which we compete for sales of networking equipment, software and services are extremely competitive. Competition is particularly intense as we and our competitors more aggressively seek to displace incumbent equipment vendors at large carrier customers and secure new customers and additional market share for new, next-generation products. In an effort to secure new or long-term customers and capture market share, we have in the past, and may in the future, agree to onerous commercial terms or pricing that result in low or negative gross margins on a particular order or group of orders. We expect this level of competition to continue and potentially increase, as larger Chinese equipment vendors seek to gain entry into the U.S. market, and other global competitors seek to retain incumbent positions with customers.

Competition in our markets, generally, is based on any one or a combination of the following factors: price, product features, functionality and performance, service offering, manufacturing capability and lead-times, incumbency and existing business relationships, scalability and the flexibility of products to meet the immediate and future network and service requirements of customers. A small number of very large companies have dominated our industry. These competitors have substantially greater financial and marketing resources, greater manufacturing capacity, broader product offerings and more established relationships with service providers and other potential customers than we do. Because of their scale and resources, they may be perceived to be a better fit for the procurement, or network operating and management, strategies of large service providers. We also compete with a number of smaller companies that provide significant competition for a specific product, application, customer segment or geographic market. Due to the narrower focus of their efforts, these competitors may achieve commercial availability of their products more quickly or may be more attractive to customers.

Increased competition in our markets has resulted in aggressive business tactics, including:

	•		significant price competition, particularly for our Packet-Optical Transport platforms;

	•		customer financing assistance provided by other vendors or their sponsors;

	•		assumption of onerous or atypical commercial terms that involve a greater degree of risk;

	•		offers to repurchase our equipment from existing customers; and

	•		intellectual property assertions and disputes.

The tactics described above can be particularly effective in an increasingly concentrated base of potential customers such as communications service providers. If competitive pressures increase or we fail to compete successfully in our markets, our sales and profitability would suffer.

Our reliance upon third party manufacturers exposes us to risks that could negatively affect our business and operations.

We rely upon third party contract manufacturers to perform the substantially all of the manufacturing of our products and a significant portion of our component sourcing. We do not have contracts in place with some of our manufacturers, do not have guaranteed supply of components or access to manufacturing capacity, and in some cases are utilizing temporary or transitional commercial arrangements intended to facilitate the integration of the MEN Business. Our reliance upon third party manufacturers could expose us to increased risks related to lead times, continuity of supply, on-time delivery, quality assurance, and compliance with environmental standards and other regulations. Reliance upon third party manufacturers exposes us to risks related to their operations, financial position, business continuity and continued viability. Our operations may also be affected by geopolitical events, natural disasters, military actions or health pandemics in the countries where our products or critical components are manufactured. Our product manufacturing principally takes place in Mexico, Canada, Thailand and China. Significant disruptions in these countries affecting supply and manufacturing capacity, or other difficulties with our contract manufacturers would negatively affect our business and results of operations.

In an effort to drive cost reductions and further optimize Ciena’s operations following the MEN Acquisition, we are working to rationalize our supply chain and consolidate third party contract manufacturers and distribution facilities. We also intend to pursue additional opportunities for direct fulfillment of products from our manufacturers to our customers. There can be no assurance that these efforts, including any reallocation of the third party manufacturing and sourcing or changes in fulfillment involving our manufacturers, will not ultimately result in additional costs, changes in quality or disruptions in our operations and business.

Difficulties with third party component suppliers, including sole and limited source suppliers, could increase our costs and harm our business and customer relationships.

We depend on third party suppliers for our product components and subsystems, as well as for equipment used to manufacture and test our products. Our products include key optical and electronic components for which reliable, high-volume supply is often available only from sole or limited sources. Increases in market demand or periods of economic weakness have previously resulted in shortages in availability of important components. Unfavorable economic conditions or other challenges in their businesses can affect our suppliers’ liquidity levels, ability to continue to invest in their business, stocking of components in sufficient quantity, and increased lead times, and can result in a higher incidence of component discontinuation. These difficulties could result in lost revenue, additional product costs and deployment delays that could harm our business and customer relationships. We do not have any guarantee of supply from these third parties, and in certain cases relating to the MEN Business, are relying upon temporary or transitional commercial arrangements intended to facilitate the integration. As a result, there is no assurance that we will be able to secure the components or subsystems that we require in sufficient quantity and quality on reasonable terms. The loss of a source of supply, or lack of sufficient availability of key components, could require that we locate an alternate source or redesign our products, each of which could increase our costs and negatively affect our product gross margin and results of operations. Our business and results of operations would be negatively affected if we were to experience any significant disruption of difficulties with key suppliers affecting the price, quality, availability or timely delivery of required components.

Investment of research and development resources in technologies for which there is not a matching market opportunity, or failure to sufficiently or timely invest in technologies for which there is market demand, would adversely affect our revenue and profitability.

The market for communications networking equipment is characterized by rapidly evolving technologies and changes in market demand. We continually invest in research and development to sustain or enhance our existing products and develop or acquire new product technologies. Our current development efforts are focused upon the platform evolution of our CoreDirector Multiservice Optical Switch family to our ActivFlex 5430, expansion of our ActivEdge service delivery and aggregation switches, and extension of our 40G and 100G coherent technologies and capabilities for our Packet-Optical Transport platforms. There is often a lengthy period between commencing these development initiatives and bringing a new or improved product to market. During this time, technology preferences, customer demand and the market for our products may move in directions we had not anticipated. There is no guarantee that new products or enhancements will achieve market acceptance or that the timing of market adoption will be as predicted. There is a significant possibility, therefore, that some of our development decisions, including significant expenditures on acquisitions, research and development costs, or investments in technologies, will not turn out as anticipated, and that our investment in some projects will be unprofitable. There is also a possibility that we may miss a market opportunity because we failed to invest, or invested too late, in a technology, product or enhancement. Changes in market demand or investment priorities may also cause us to discontinue existing or planned development for new products or features, which can have a disruptive effect on our relationships with customers. These product development risks can be compounded in the context of rationalizing offerings and the significant development work required to integrate products and network management software following a significant acquisition. If we fail to make the right investments or fail to make them at the right time, our competitive position may suffer and our revenue and profitability could be harmed.

Our business and operating results could be adversely affected by unfavorable changes in macroeconomic and market conditions and reductions in the level of capital expenditure by customers in response to these conditions.

Broad macroeconomic weakness has previously resulted in sustained periods of decreased demand for our products and services that have adversely affected our operating results. In response to these conditions, many of our customers significantly reduced their network infrastructure expenditures as they sought to conserve capital, reduce debt or address uncertainties or changes in their own business models brought on by broader market challenges. Continuation of or an increase in challenging economic and market conditions could result in:

	•		difficulty forecasting, budgeting and planning due to limited visibility into the spending plans of current or prospective customers;

	•		increased competition for fewer network projects and sales opportunities;

	•		increased pricing pressure that may adversely affect revenue and gross margin;

	•		higher overhead costs as a percentage of revenue;

	•		increased risk of charges relating to excess and obsolete inventories and the write off of other intangible assets; and

	•		customer financial difficulty and increased difficulty in collecting accounts receivable.

Our business and operating results could be materially affected by reduced customer spending in response to unfavorable or uncertain macroeconomic and market conditions, globally or specific to a particular region where we operate.

The international scale of our operations could expose us to additional risks and expense and adversely affect our results of operations.

We market, sell and service our products globally and rely upon a global supply chain for sourcing of important components and manufacturing of our products. International operations are subject to inherent risks, including:

	•		effects of changes in currency exchange rates;

	•		greater difficulty in collecting accounts receivable and longer collection periods;

	•		difficulties and costs of staffing and managing foreign operations;

	•		the impact of economic conditions in countries outside the United States;

	•		less protection for intellectual property rights in some countries;

	•		adverse tax and customs consequences, particularly as related to transfer-pricing issues;

	•		social, political and economic instability;

	•		higher incidence of corruption or unethical business practices;

	•		trade protection measures, export compliance, domestic preference procurement requirements, qualification to transact business and additional regulatory requirements; and

	•		natural disasters, epidemics and acts of war or terrorism.

Moreover, while we have seen early progress and sales opportunities with new customers in the Middle East, there can be no assurance that recent instability and unrest in the region will not adversely affect our business, operations and financial results relating to these and other opportunities

We expect that we may enter new markets and withdraw from or reduce operations in others. In some countries, our success will depend in part on our ability to form relationships with local partners. Our inability to identify appropriate partners or reach mutually satisfactory arrangements could adversely affect our business and operations. Our global operations may result in increased risk and expense to our business and could give rise to unanticipated liabilities or difficulties that could adversely affect our operations and financial results.

Product performance problems could damage our business reputation and negatively affect our results of operations.

The development and production of sophisticated communications network equipment is complicated. Some of our products can be fully tested only when deployed in communications networks or when carrying traffic with other equipment. As a result, undetected defects or errors, and product quality, reliability and performance problems are often more acute for initial deployments of new products and product enhancements. Unanticipated problems can relate to the design, manufacturing, installation or integration of our products. Product performance problems can also relate to defects in components, software or manufacturing services supplied by third parties. Product performance, reliability and quality problems can negatively affect our business, including:

	•		increased costs to remediate software or hardware defects or replace products;

	•		payment of liquidated damages or similar claims for performance failures or delays;

	•		increased inventory obsolescence;

	•		increased warranty expense or estimates resulting from higher failure rates, additional field service obligations or other rework costs related to defects;

	•		delays in recognizing revenue or collecting accounts receivable; and

	•		declining sales and order cancellations.

Product performance problems could also damage our business reputation and harm our prospects with potential customers. These consequences of product defects or quality problems, including any significant costs to remediate, could negatively affect our business and results of operations.

Network equipment sales to large communications service providers often involve lengthy sales cycles and protracted contract negotiations and may require us to assume terms or conditions that negatively affect our pricing, payment terms and the timing of revenue recognition.

Our future success will depend in large part on our ability to maintain and expand our sales to large communications service providers. These sales typically involve lengthy sales cycles, extensive product testing, and demonstration laboratory or network certification, including network-specific or region-specific product certification or homologation processes. These sales also often involve protracted and sometimes difficult contract negotiations in which we may be required to agree to contract terms or conditions that negatively affect pricing, payment terms and the timing of revenue recognition in order to consummate a sale. We may also be requested to provide extended payment terms, vendor or third-party financing, or offer other alternative purchase structures. These terms may, in turn, negatively affect our revenue and results of operations and increase our risk and susceptibility to quarterly fluctuations in our results. Service providers may ultimately insist upon terms and conditions that we deem too onerous or not in our best interest. Moreover, our purchase agreements generally do not require that a customer guarantee any minimum purchase level and customers often have the right to modify, delay, reduce or cancel previous orders. As a result, we may incur substantial expense and devote time and resources to potential sales opportunities that never materialize or result in lower than anticipated sales.

We may not be successful in selling our products into new markets and developing and managing new sales channels.

We have expanded our geographic presence significantly in recent years, including as a result of our acquisition of the MEN Business. We continue to take steps to sell our products into new markets and to a broader customer base, including other large communications service providers, enterprises, wireless operators, cable operators, submarine network operators, content providers, research and education institutions, and federal, state and local governments. In many cases, we have less experience in these markets and customers have less familiarity with our company. To succeed in some of these markets we believe we must develop and manage new sales channels and distribution arrangements. We expect these relationships to be an important part of our business internationally as well as for sales to federal, state and local governments. Failure to manage additional sales channels effectively, and exposure to liabilities relating to their actions or omissions, would limit our ability to succeed in these new markets and could adversely affect our result of operations and the growth of our business.

We may experience delays in the development of our products that may negatively affect our competitive position and business.

Our products are based on complex technology, and we can experience unanticipated delays in developing,

manufacturing or deploying them. Each step in the development life cycle of our products presents serious risks of failure, rework or delay, any one of which could adversely affect the cost-effective and timely development of our products. The development of our products, including the integration of the products acquired from the MEN Business into our portfolio and the development of an integrated software tool to manage the combined portfolio, present significant complexity. In addition, intellectual property disputes, failure of critical design elements, and other execution risks may delay or even prevent the release of these products. Delays in product development may affect our reputation with customers and the timing and level of demand for our products. If we do not develop and successfully introduce products in a timely manner, our competitive position may suffer and our business, financial condition and results of operations would be harmed.

We may be required to write off significant amounts of inventory as a result of our inventory purchase practices, the convergence of product lines or unfavorable market conditions.

To avoid delays and meet customer demand for shorter delivery terms, we place orders with our contract manufacturers and suppliers to manufacture components and complete assemblies based in part on forecasts of customer demand. As a result, our inventory purchases expose us to the risk that our customers either will not order the products we have forecasted, or will purchase fewer products than forecasted. Market conditions can limit visibility into customer spending plans and compound the difficulty of forecasting inventory at appropriate levels. Moreover, our customer purchase agreements generally do not guarantee any minimum purchase level, and customers often have the right to modify, reduce or cancel purchase quantities. As a result, we may purchase inventory in anticipation of sales that ultimately do not occur. Historically, our inventory write-offs have resulted from the circumstances above. As features and functionalities converge across our product lines, and we introduce new products, however, we face an additional risk that customers may forego purchases of one product we have inventoried in favor of another product with similar functionality. If we are required to write off or write down a significant amount of inventory, our results of operations for the period would be materially adversely affected.

Restructuring activities could disrupt our business and affect our results of operations.

We have previously taken steps, including reductions in force, office closures, and internal reorganizations to reduce the size and cost of our operations and to better match our resources with market opportunities. We may take similar steps in the future, particularly as we seek to realize operating synergies and cost reductions associated with the MEN Acquisition. These changes could be disruptive to our business and may result in significant expense including accounting charges for inventory and technology-related write-offs, workforce reduction costs and charges relating to consolidation of excess facilities. Substantial expense or charges resulting from restructuring activities could adversely affect our results of operations in the period in which we take such a charge.

Our failure to manage effectively our relationships with third party service partners could adversely impact our financial results and relationship with customers.

We rely on a number of third party service partners, both domestic and international, to complement our global service and support resources. We rely upon these partners for certain installation, maintenance and support functions. In order to ensure the proper installation and maintenance of our products, we must identify, train and certify qualified service partners. Certification can be costly and time-consuming, and our partners often provide similar services for other companies, including our competitors. We may not be able to manage effectively our relationships with our service partners and cannot be certain that they will be able to deliver services in the manner or time required. If our service partners are unsuccessful in delivering services:

	•		we may suffer delays in recognizing revenue;

	•		our services revenue and gross margin may be adversely affected; and

	•		our relationship with customers could suffer.

If we do not manage effectively our relationships with third party service partners, or they fail to perform these services in the manner or time required, our financial results and relationship with customers could be adversely affected.

Our intellectual property rights may be difficult and costly to enforce.

We generally rely on a combination of patents, copyrights, trademarks and trade secret laws to establish and maintain proprietary rights in our products and technology. Although we have been issued numerous patents and other patent applications are currently pending, there can be no assurance that any of these patents or other proprietary rights will not be challenged, invalidated or circumvented or that our rights will provide us with any competitive advantage. In addition, there can be no assurance that patents will be issued from pending applications or that claims allowed on any patents will be sufficiently broad to protect our technology. Further, the laws of some foreign countries may not protect our proprietary rights to the same extent as do the laws of the United States.

We are subject to the risk that third parties may attempt to use our intellectual property without authorization. Protecting against the unauthorized use of our products, technology and other proprietary rights is difficult, time-consuming and expensive, and we cannot be certain that the steps that we are taking will prevent or minimize the risks of such unauthorized use. Litigation may be necessary to enforce or defend our intellectual property rights or to determine the validity or scope of the proprietary rights of others. Such litigation could result in substantial cost and diversion of management time and resources, and there can be no assurance that we will obtain a successful result. Any inability to protect and enforce our intellectual property rights, despite our efforts, could harm our ability to compete effectively.

We may incur significant costs in response to claims by others that we infringe their intellectual property rights.

From time to time third parties may assert claims or initiate litigation or other proceedings related to patent, copyright, trademark and other intellectual property rights to technologies and related standards that are relevant to our business. These assertions have increased over time due to our growth, the increased number of products and competitors in the communications network equipment industry and the corresponding overlaps, and the general increase in the rate of patent claims assertions, particularly in the United States. Asserted claims, litigation or other proceedings can include claims against us or our manufacturers, suppliers or customers, alleging infringement of third party proprietary rights with respect our existing or future products and technology or components of those products. Regardless of the merit of these claims, they can be time-consuming, divert the time and attention of our technical and management personnel, and result in costly litigation. These claims, if successful, can require us to:

	•		pay substantial damages or royalties;

	•		comply with an injunction or other court order that could prevent us from offering certain of our products;

	•		seek a license for the use of certain intellectual property, which may not be available on commercially reasonable terms or at all;

	•		develop non-infringing technology, which could require significant effort and expense and ultimately may not be successful; and

	•		indemnify our customers pursuant to contractual obligations and pay damages on their behalf.

Any of these events could adversely affect our business, results of operations and financial condition. Our exposure to risks associated with the use of intellectual property may be increased as a result of acquisitions, as we have a lower level of visibility into the development process with respect to such technology or the steps taken to safeguard against the risks of infringing the rights of third parties.

We may fail to realize the anticipated benefits of our acquisition of the MEN Business, which could adversely affect our operating results and the market price of our common stock.

The success of our acquisition of the MEN Business will depend, in significant part, on our ability to grow the combined business and realize the anticipated strategic benefits and operating synergies from the combination. Achieving these benefits requires revenue growth and the realization of targeted sales, cost reductions in our supply chain, and other operating and research and development synergies. As a result, we may not realize the benefits of this transaction or these benefits may be less significant than we expect, or may take longer to achieve than anticipated. If we are not able to realize the anticipated benefits of the MEN Acquisition within a reasonable time, our results of operations and the value of Ciena’s common stock may be adversely affected.

Our use and reliance upon development resources in India may expose us to unanticipated costs or liabilities.

We have a significant development center in India and, in recent years, have increased headcount and development activity at this facility. There is no assurance that our reliance upon development resources in India will enable us to achieve meaningful cost reductions or greater resource efficiency. Further, our development efforts and other operations in India involve significant risks, including:

	•		difficulty hiring and retaining appropriate engineering resources due to intense competition for such resources and resulting wage inflation;

	•		exposure to misappropriation of intellectual property and proprietary information;

	•		heightened exposure to changes in the economic, regulatory, security and political conditions of India; and

	•		fluctuations in currency exchange rates and tax compliance in India.

Difficulties resulting from the factors above and other risks related to our operations in India could expose us to increased expense, impair our development efforts, harm our competitive position and damage our reputation.

We may be exposed to unanticipated risks and additional obligations in connection with our resale of complementary products or technology of other companies.

We have entered into agreements with strategic partners that permit us to distribute their products or technology. We may rely upon these relationships to add complementary products or technologies, diversify our product portfolio, or address a particular customer or geographic market. We may enter into additional original equipment manufacturer (OEM), resale or similar strategic arrangements in the future, including in support of our selection as a domain supply partner with AT&T. We may incur unanticipated costs or difficulties relating to our resale of third party products. Our third party relationships could expose us to risks associated with the business and viability of such partners, as well as delays in their development, manufacturing or delivery of products or technology. We may also be required by customers to assume warranty, indemnity, service and other commercial obligations greater than the commitments, if any, made to us by our technology partners. Some of our strategic partners are relatively small companies with limited financial resources. If they are unable to satisfy their obligations to us or our customers, we may have to expend our own resources to satisfy these obligations. Exposure to these risks could harm our reputation with key customers and negatively affect our business and our results of operations.

Our exposure to the credit risks of our customers and resellers may make it difficult to collect receivables and could adversely affect our revenue and operating results.

In the course of our sales to customers, we may have difficulty collecting receivables and could be exposed to risks associated with uncollectible accounts. We may be exposed to similar risks relating to third party resellers and other sales channel partners. Lack of liquidity in the capital markets or a sustained period of unfavorable economic conditions may increase our exposure to credit risks. Our attempts to monitor these situations carefully and take appropriate measures to protect ourselves may not be sufficient, and it is possible that we may have to write down or write off doubtful accounts. Such write-downs or write-offs could negatively affect our operating results for the period in which they occur, and, if large, could have a material adverse effect on our revenue and operating results.

If we are unable to attract and retain qualified personnel, we may be unable to manage our business effectively.

Competition to attract and retain highly skilled technical, engineering and other personnel with experience in our

industry is intense and our employees have been the subject of targeted hiring by our competitors. We may experience difficulty retaining and motivating existing employees and attracting qualified personnel to fill key positions. Because we rely upon equity awards as a significant component of compensation, particularly for our executive team, a lack of positive performance in our stock price, reduced grant levels, or changes to our compensation program may adversely affect our ability to attract and retain key employees. It may be difficult to replace members of our management team or other key personnel, and the loss of such individuals could be disruptive to our business. In addition, none of our executive officers is bound by an employment agreement for any specific term. If we are unable to attract and retain qualified personnel, we may be unable to manage our business effectively and our operations and results of operations could suffer.

We may be adversely affected by fluctuations in currency exchange rates.

As a global concern, we face exposure to adverse movements in foreign currency exchange rates. Historically, our sales were primarily denominated in U.S. dollars. As a result of our increased global presence, a larger percentage of our revenue and operating expense are now non-U.S. dollar denominated and therefore subject to foreign currency fluctuation. We face exposure to currency exchange rates as a result of the growth in our non-U.S. dollar denominated operating expense in Canada, Europe, Asia, and Latin America. From time to time, we may hedge against currency exposure associated with anticipated foreign currency cash flows. There can be no assurance that any hedging instruments will be effective and losses associated with these instruments and the adverse effect of foreign currency exchange rate fluctuation may negatively affect our results of operations.

Our products incorporate software and other technology under license from third parties and our business would be adversely affected if this technology was no longer available to us on commercially reasonable terms.

We integrate third-party software and other technology into our embedded operating system, network management system tools and other products. Licenses for this technology may not be available or continue to be available to us on commercially reasonable terms. Third party licensors may insist on unreasonable financial or other terms in connection with our use of such technology. Difficulties with third party technology licensors could result in termination of such licenses, which may result in significant costs and require us to obtain or develop a substitute technology. Difficulty obtaining and maintaining third-party technology licenses may disrupt development of our products and increase our costs, which could harm our business.

Our business is dependent upon the proper functioning of our internal business processes and information systems and modifications may disrupt our business, processes and internal controls.

The successful operation of various internal business processes and information systems is critical to the efficient operation of our business. If these systems fail or are interrupted, our operations may be adversely affected and operating results could be harmed. Our business processes and information systems need to be sufficiently scalable to support the future growth of our business and may require modifications that expose us to a number of operational risks. These changes may be costly and disruptive, and could impose substantial demands on management time. These changes may also require the modification of a number of internal control procedures and significant training of employees. Any material disruption, malfunction or similar problems with our business processes or information systems, or the transition to new processes and systems, could have a negative effect on the operation of our business and our results of operations.

Strategic acquisitions and investments may expose us to increased costs and unexpected liabilities.

We may acquire or make investments in other technology companies, or enter into other strategic relationships, to expand the markets we address, diversify our customer base or acquire or accelerate the development of technology or products. To do so, we may use cash, issue equity that would dilute our current stockholders’ ownership, or incur debt or assume indebtedness. These transactions involve numerous risks, including:

	•		significant integration costs;

	•		disruption due to the integration and rationalization of operations, products, technologies and personnel;

	•		diversion of management’s attention;

	•		difficulty completing projects of the acquired company and costs related to in-process projects;

	•		the loss of key employees;

	•		ineffective internal controls over financial reporting;

	•		dependence on unfamiliar suppliers or manufacturers;

	•		exposure to unanticipated liabilities, including intellectual property infringement claims; and

•

adverse tax or accounting effects including amortization expense related to intangible assets and charges associated with impairment of goodwill.

As a result of these and other risks, our acquisitions, investments or strategic transactions may not reap the intended benefits and may ultimately have a negative impact on our business, results of operation and financial condition.

Changes in government regulation affecting the communications industry and the businesses of our customers could harm our prospects and operating results.

The Federal Communications Commission, or FCC, has jurisdiction over the U.S. communications industry and similar agencies have jurisdiction over the communication industries in other countries. Many of our largest customers are subject to the rules and regulations of these agencies. Changes in regulatory requirements in the United States or other countries could inhibit service providers from investing in their communications network infrastructures or introducing new services. These changes could adversely affect the sale of our products and services. Changes in regulatory tariff requirements or other regulations relating to pricing or terms of carriage on communications networks could slow the development or expansion of network infrastructures and adversely affect our business, operating results, and financial condition.

Governmental regulations affecting the use, import or export of products could negatively affect our revenue.

The United States and various foreign governments have imposed controls, license requirements and other restrictions on the usage, import or export of some of the technologies that we sell. Governmental regulation of usage, import or export of our products, or our failure to obtain required approvals for our products, could harm our international and domestic sales and adversely affect our revenue and costs of sales. Failure to comply with such regulations could result in enforcement actions, fines or penalties and restrictions on export privileges. In addition, costly tariffs on our equipment, restrictions on importation, trade protection measures and domestic preference requirements of certain countries could limit our access to these markets and harm our sales. For example, India’s government has recently implemented and is considering additional rules applicable to non-Indian network equipment vendors and has imposed significant tariffs that may inhibit sales of certain communications equipment; including equipment manufactured in China, where certain of our products are assembled. These and other regulations could adversely affect the sale or use of our products, substantially increase our cost of sales and could adversely affect our business and revenue.

Governmental regulations related to the environment and potential climate change, could adversely affect our business and operating results.

Our operations are regulated under various federal, state, local and international laws relating to the environment and potential climate change. We could incur fines, costs related to damage to property or personal injury, and costs related to investigation or remediation activities, if we were to violate or become liable under these laws or regulations. Our product design efforts, and the manufacturing of our products, are also subject to evolving requirements relating to the presence of certain materials or substances in our equipment, including regulations that make producers for such products financially responsible for the collection, treatment and recycling of certain products. For example, our operations and financial results may be negatively affected by environmental regulations, such as the Waste Electrical and Electronic Equipment (WEEE) and Restriction of the Use of Certain Hazardous Substances in Electrical and Electronic Equipment (RoHS) that have been adopted by the European Union. Compliance with these and similar environmental regulations may increase our cost of designing, manufacturing, selling and removing our products. These regulations may also make it difficult to obtain supply of compliant components or require us to write off non-compliant inventory, which could have an adverse effect our business and operating results.

We may be required to write down long-lived assets and these impairment charges would adversely affect our operating results.

As of April 30, 2011, our balance sheet includes $546.8 million in long-lived assets, which includes $369.8 million of intangible assets. Valuation of our long-lived assets requires us to make assumptions about future sales prices and sales volumes for our products. These assumptions are used to forecast future, undiscounted cash flows. Given the significant uncertainty and instability of macroeconomic conditions in recent periods, forecasting future business is difficult and subject to modification. If actual market conditions differ or our forecasts change, we may be required to reassess long-lived assets and could record an impairment charge. Any impairment charge relating to long-lived assets would have the effect of decreasing our earnings or increasing our losses in such period. If we are required to take a substantial impairment charge, our operating results could be materially adversely affected in such period.

Failure to maintain effective internal controls over financial reporting could have a material adverse effect on our business, operating results and stock price.

Section 404 of the Sarbanes-Oxley Act of 2002 requires that we include in our annual report a report containing management’s assessment of the effectiveness of our internal controls over financial reporting as of the end of our fiscal year and a statement as to whether or not such internal controls are effective. Compliance with these requirements has resulted in, and is likely to continue to result in, significant costs and the commitment of time and operational resources. Changes in our business, including the integration of the MEN Business and wind down of transition support services, will necessitate modifications to our internal control systems, processes and information systems, both on a transition basis, and over the longer-term as we fully integrate the combined company. Our increased global operations and expansion into new regions could pose additional challenges to our internal control systems. We cannot be certain that our current design for internal control over financial reporting, or any additional changes to be made during fiscal 2011, will be sufficient to enable management to determine that our internal controls are effective for any period, or on an ongoing basis. If we are unable to assert that our internal controls over financial reporting are effective, our business may be harmed. Market perception of our financial condition and the trading price of our stock may be adversely affected, and customer perception of our business may suffer.

Outstanding indebtedness under our convertible notes may adversely affect our business.

At April 30, 2011, indebtedness on our outstanding convertible notes totaled approximately $1.4 billion in aggregate principal. Our indebtedness could have important negative consequences, including:

	•		increasing our vulnerability to adverse economic and industry conditions;

	•		limiting our ability to obtain additional financing, particularly in light of unfavorable conditions in the credit markets;

	•		reducing the availability of cash resources for other purposes, including capital expenditures;

	•		limiting our flexibility in planning for, or reacting to, changes in our business and the markets in which we compete; and

	•		placing us at a possible competitive disadvantage to competitors that have better access to capital resources.

We may also add additional indebtedness such as equipment loans, working capital lines of credit and other long-term debt.

Our stock price is volatile.

Our common stock price has experienced substantial volatility in the past and may remain volatile in the future. Volatility in our stock price can arise as a result of a number of the factors discussed in this “Risk Factors” section. During fiscal 2010, our closing stock price ranged from a high of $19.24 per share to a low of $10.67 per share. As of the end of the second quarter of fiscal 2011, our closing stock price was $28.24. The stock market has experienced extreme price and volume fluctuations that have affected the market price of many technology companies, with such volatility often unrelated to the operating performance of these companies. Divergence between our actual or anticipated financial results and published expectations of analysts can cause significant swings in our stock price. Our stock price can also be affected by announcements that we, our competitors, or our customers may make, particularly announcements related to acquisitions or other significant transactions. Our common stock is included in a number of market indices and any change in the composition of these indices to exclude our company would adversely affect our stock price. These factors, as well as conditions affecting the general economy or financial markets, may materially adversely affect the market price of our common stock in the future.

Item 2. Unregistered Sales of Equity Securities and Use of Proceeds

Not applicable.

Item 3. Defaults Upon Senior Securities

Not applicable.

Item 4. Removed and Reserved

Item 5. Other Information

On June 8, 2011, Ciena adopted the U.S. Executive Severance Benefit Plan (the “Severance Plan”), as approved by the Compensation Committee of Ciena’s Board of Directors. The Severance Plan provides certain U.S.-based employees of Ciena Corporation and certain of its affiliates, including the Ciena’s executive officers and employees of the rank of vice president or above (each, a “participant”), with certain severance benefits in the event of an involuntary termination of his or her services by Ciena without “cause.”

Under the Severance Plan, benefits payable to participants upon an involuntary separation of service without cause consist of the following:

Cash Severance Payment. Participants will be entitled to a lump sum cash severance payment as set forth below. Ciena’s Chief Executive Officer will be entitled to severance equal to two times his annual base salary and annual target incentive bonus, while our other executive officers will be entitled to severance equal to one times their annual base salary and annual target incentive bonus or commission. All other participants will be entitled to severance ranging from a minimum of 26 weeks to a maximum of 52 weeks of base salary, depending upon length of service. The base salary and, where applicable, bonus payments above would be determined based on the salary rate and incentive compensation program in effect immediately prior to the date of termination. Bonus amounts are to be paid at the “target” level.

Benefits Continuation. For a period of 18 months, in the case of Ciena’s Chief Executive Officer, 12 months for Senior Vice Presidents, and, for other participants, the equivalent period of the applicable cash severance period, the participant and his or her family will be eligible to continue to participate in our group medical, dental and vision plans. If we cannot continue benefits coverage, we will provide equivalent coverage for the applicable coverage period above at our expense.

Outplacement Assistance. For a period of 12 months, in the case of Ciena’s Chief Executive Officer and other executive officers, and six months for all other participants, Ciena will provide executive outplacement assistance, at its expense, through its then-current agency.

As a condition of receiving benefits under the Severance Plan, each participant shall agree to deliver a release of claims, comply with certain non-competition and non-solicitation obligations for a 12 month period, and comply with certain continuing obligations with respect to confidential and proprietary information and inventions. Failure to comply with these and other conditions set forth in the Severance Plan will require the repayment of severance benefits in full. In addition, severance payments are subject to recoupment in accordance with applicable law and any future “clawback” policy adopted by Ciena.

Should any payment of severance benefits be subject to excise tax imposed under federal law, or any related interest or penalties, severance benefits shall be either (a) paid in full by us, or (b) paid in a lesser amount such that no portion of the payments would be subject to the excise tax, whichever results in receipt by the executive of a greater amount. This “best choice” mechanism above does not require Ciena to pay any excise taxes, or to make any gross-up payments related to excise taxes resulting from any payment of severance benefits.

Under the Severance Plan, a “separation of service” includes a termination of employment by the participant where Ciena and participant anticipate that participant will perform no further services for Ciena, or that the level of services to be performed will permanently decrease to no more than 20% of the average level of services performed over the immediately preceding 36 month period. In addition, under the Severance Plan, “cause” means the occurrence of any one or more of the following:

	•		the participant’s willful and continued failure substantially to perform his or her duties (other than as a result of disability), provided in the case of executive officers, such failure shall be determined by the Board following written notice to the participant and an opportunity to be heard;

	•		any willful act or omission by the participant in connection with his or her responsibilities as an employee constituting dishonesty, fraud or other malfeasance, immoral conduct or gross misconduct;

	•		any willful material violation by the participant of Ciena’s Code of Business Conduct and Ethics or the Proprietary Information, Inventions and Non-Solicitation Agreement; or

	•		the participant’s conviction of, or plea of nolo contendere to, a felony or a crime of moral turpitude under the laws of the United States or any state thereof or any other jurisdiction in which Ciena conducts business.

No act or failure to act above shall be deemed “willful” unless effected by the participant not in good faith and without a reasonable belief that such act or failure to act was in or not opposed to Ciena’s best interests.

The Severance Plan provides that the benefits to which a participant is entitled under the Severance Plan will be reduced by amounts paid under other Ciena severance plans, policies, programs or practice.

Item 6. Exhibits


10.1		Ciena Corporation U.S. Executive Severance Benefit Plan

31.1		Certification of Chief Executive Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

31.2		Certification of Chief Financial Officer Pursuant to Rule 13a-14(a) under the Securities Exchange Act of 1934 as Adopted Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002

32.1		Certification of Chief Executive Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

32.2		Certification of Chief Financial Officer Pursuant to 18 U.S.C. Section 1350 as Adopted Pursuant to Section 906 of the Sarbanes-Oxley Act of 2002

101.INS*		XBRL Instance Document

101.SCH*		XBRL Taxonomy Extension Schema Document

101.CAL*		XBRL Taxonomy Extension Calculation Linkbase Document

101.DEF*		XBRL Taxonomy Extension Definition Linkbase Document

101.LAB*		XBRL Taxonomy Extension Label Linkbase Document

101.PRE*		XBRL Taxonomy Extension Presentation Linkbase Document


*		In accordance with Regulation S-T, XBRL (Extensible Business Reporting Language) related information in Exhibit No. (101) to this Quarterly Report on Form 10-Q shall be deemed “furnished” and not “filed” for purposes of Section 18 of the Securities Exchange Act of 1934, as amended, or otherwise subject to the liabilities of that section, and shall not be incorporated by reference into any registration statement pursuant to the Securities Act of 1933, as amended.

SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, the Registrant has duly caused this report to be signed on its behalf by the undersigned thereunto duly authorized.


	Ciena Corporation
Date: June 9, 2011	By:	/s/ Gary B. Smith
		Gary B. Smith
		President, Chief Executive Officer and Director (Duly Authorized Officer)


Date: June 9, 2011	By:	/s/ James E. Moylan, Jr.
		James E. Moylan, Jr.
		Senior Vice President, Finance and Chief Financial Officer (Principal Financial Officer)