FOURTH AMENDMENT TO CREDIT AGREEMENT

FOURTH AMENDMENT TO CREDIT AGREEMENT

THIS FOURTH AMENDMENT TO CREDIT AGREEMENT (this “Amendment”), dated as of July 2, 2012, is entered into by and among XXXXX FARGO CAPITAL FINANCE, LLC, a Delaware limited liability company formerly known as Xxxxx Fargo Foothill, LLC, as administrative agent (in such capacity, “Agent”) for the Lenders (as defined below), FINISAR CORPORATION, a Delaware corporation (“Parent”), OPTIUM CORPORATION, a Delaware corporation, (“Optium” and Parent, each individually a “Borrower”, and individually and collectively, jointly and severally, the “Borrowers”) and the Lenders.

RECITALS

A. Borrowers, the lenders party thereto from time to time (the “Lenders”) and Agent, have previously entered into that certain Credit Agreement dated as of October 2, 2009 (as the same may be modified, supplemented or amended from time to time, the “Credit Agreement”), pursuant to which the Lenders have made certain loans and financial accommodations available to Borrowers. Terms used herein without definition shall have the meanings ascribed to them in the Credit Agreement.

B. Borrowers have requested that Agent and the Lenders amend the Credit Agreement, which Agent and the Lenders are willing to do pursuant to the terms and conditions set forth herein.

C. Borrowers are entering into this Amendment with the understanding and agreement that, except as specifically provided herein, none of Agent's or any Lender's rights or remedies as set forth in the Credit Agreement are being waived or modified by the terms of this Amendment.

AGREEMENT

NOW, THEREFORE, in consideration of the foregoing and the mutual covenants herein contained, and for other good and valuable consideration, the receipt and sufficiency of which are hereby acknowledged, the parties hereby agree as follows:

1.Amendments to Credit Agreement.

(a)Clause (d)(i) of the definition of “Borrowing Base” set forth in Schedule 1.1 of the Credit Agreement is hereby amended and restated in its entirety to read as follows:

“(i) $40,000,000,”

(b)The definition of “Eligible Specified Account Debtor” set forth in Schedule 1.1 of the Credit Agreement is hereby amended and restated in its entirety to read as follows:

“ 'Eligible Specified Account Debtor' means an Account Debtor (a) listed on Schedule E-3 (as such list may be added to from time to time by Agent in its sole discretion), so long as such Account Debtor, or the owner of all of the Stock of such Account Debtor, has a credit rating of at least “BB+” by S&P or “Ba 1” by Xxxxx'x or (b) listed on Schedule E-4 unless any such Account Debtor is removed from such Schedule by Agent in its Permitted Discretion.”

(c) Schedule E-3 to the Credit Agreement is hereby amended and restated in its entirety as set forth on Schedule E-3 attached hereto.

(d) Schedule E-4 attached hereto is hereby added to the Credit Agreement as Schedule E-4 thereto.

2.Conditions Precedent to Effectiveness of this Amendment. This Amendment shall not become effective until all of the following conditions precedent shall have been satisfied in the sole discretion of Agent or waived by Agent:

(a)Amendment. Agent shall have received this Amendment fully executed in a sufficient number of counterparts for distribution to all parties.

(b)Representations and Warranties. The representations and warranties set forth herein and in the Credit Agreement (other than any such representations or warranties that, by their terms, are specifically made as of a date other than the date hereof) must be true and correct.

(c)Other Required Documentation. Agent shall have received all other documents and legal matters in connection with the transactions contemplated by this Amendment and such documents shall have been delivered or executed or recorded and shall be in form and substance satisfactory to Agent.

3.Representations and Warranties. Each Borrower represents and warrants as follows:

(a)Authority. Each Borrower has the requisite corporate power and authority to execute and deliver this Amendment, and to perform its obligations hereunder and under the Loan Documents (as amended or modified hereby) to which it is a party. The execution, delivery and performance by each Borrower of this Amendment have been duly approved by all necessary corporate action, have received all necessary governmental approval, if any, and do not contravene any law or any contractual restriction binding on any Borrower. No other corporate proceedings are necessary to consummate such transactions.

(b)Enforceability. This Amendment has been duly executed and delivered by each Borrower. This Amendment and each Loan Document (as amended or modified hereby) is the legal, valid and binding obligation of each Borrower, enforceable against each Borrower in accordance with its terms, and is in full force and effect.

(c)Representations and Warranties. The representations and warranties contained in each Loan Document (other than any such representations or warranties that, by their terms, are specifically made as of a date other than the date hereof) are correct on and as of the date hereof as though made on and as of the date hereof.

(d)No Default. No event has occurred and is continuing that constitutes a Default or Event of Default.

4.Choice of Law. The validity of this Amendment, the construction, interpretation, and enforcement hereof, and the rights of the parties hereto with respect to all matters arising hereunder or related hereto shall be determined under, governed by, and construed in accordance with the laws of the State of California.

5.Counterparts. This Amendment may be executed in any number of counterparts and by different parties and separate counterparts, each of which when so executed and delivered, shall be deemed an original, and all of which, when taken together, shall constitute one and the same instrument. Delivery of an executed counterpart of a signature page to this Amendment by telefacsimile shall be effective as delivery of a manually executed counterpart of this Amendment.

6.Reference to and Effect on the Loan Documents.

(a)Upon and after the effectiveness of this Amendment, each reference in the Credit Agreement to “this Agreement”, “hereunder”, “hereof” or words of like import referring to the Credit Agreement, and each reference in the other Loan Documents to “the Credit Agreement”, “thereof” or words of like import referring to the Credit Agreement, shall mean and be a reference to the Credit Agreement as modified and amended hereby.

(b)Except as specifically set forth in this Amendment, the Credit Agreement and all other Loan Documents are and shall continue to be in full force and effect and are hereby in all respects ratified and confirmed and shall constitute the legal, valid, binding and enforceable obligations of Borrowers to Agent and Lenders without defense, offset, claim or contribution.

(c)The execution, delivery and effectiveness of this Amendment shall not, except as expressly provided herein, operate as a waiver of any right, power or remedy of Agent or any Lender under any of the Loan Documents, nor constitute a waiver of any provision of any of the Loan Documents.

7.Ratification. Each Borrower hereby restates, ratifies and reaffirms each and every term and condition set forth in the Credit Agreement, as amended hereby, and the Loan Documents effective as of the date hereof.

8.Estoppel. To induce Agent and Lenders to enter into this Amendment and to induce Agent and Lenders to continue to make advances to Borrowers under the Credit Agreement, each Borrower hereby acknowledges and agrees that, after giving effect to this Amendment, as of the date hereof, there exists no Default or Event of Default and no right of offset, defense, counterclaim or objection in favor of any Borrower as against Agent or any Lender with respect to the Obligations.

9.Integration. This Amendment, together with the other Loan Documents, incorporates all negotiations of the parties hereto with respect to the subject matter hereof and is the final expression and agreement

of the parties hereto with respect to the subject matter hereof.

10.Severability. In case any provision in this Amendment shall be invalid, illegal or unenforceable, such provision shall be severable from the remainder of this Amendment and the validity, legality and enforceability of the remaining provisions shall not in any way be affected or impaired thereby.

11.Submission of Amendment. The submission of this Amendment to the parties or their agents or attorneys for review or signature does not constitute a commitment by Agent or any Lender to waive any of their respective rights and remedies under the Loan Documents, and this Amendment shall have no binding force or effect until all of the conditions to the effectiveness of this Amendment have been satisfied as set forth herein.

[Remainder of Page Left Intentionally Blank]

IN WITNESS WHEREOF, the parties have entered into this Amendment as of the date first above written.

FINISAR CORPORATION,

a Delaware corporation

By:  /s/Xxxx Xxxxxx

Name:  Xxxx Xxxxxx

Title: Chief Financial Officer

OPTIUM CORPORATION,

a Delaware corporation

By: /s/Xxxx Xxxxxx

Name: Xxxx Xxxxxx

Title: Secretary and Treasurer

XXXXX FARGO CAPITAL FINANCE, LLC,

a Delaware limited liability company, as Agent and as a Lender

By: /s/ Xxxxxxx XxXxxxxxx

Name: Xxxxxxx XxXxxxxxx

Title: Vice President

BANK OF AMERICA, N.A.,

a national banking association, as a Lender

By: /s/Xxxx Xxx Xxxxxxxxxx

Name: Xxxx Xxx Xxxxxxxxxx

Title: Senior Vice President

ACKNOWLEDGEMENT BY GUARANTORS

Dated as of July 2, 2012

Each of the undersigned, being a Guarantor (“Guarantor”) under that certain General Continuing Guaranty, dated as of October 2, 2009, and made in favor of Agent for the benefit of the Lenders (“Guaranty”), hereby acknowledges and agrees to the foregoing Fourth Amendment to Credit Agreement (the “Amendment”) and confirms and agrees that the Guaranty is and shall continue to be, in full force and effect and is hereby ratified and confirmed in all respects except that, upon the effectiveness of, and on and after the date of the Amendment, each reference in such Guaranty to the Credit Agreement (as defined in the Amendment), “thereunder”, “thereof” or words of like import referring to the “Credit Agreement”, shall mean and be a reference to the Credit Agreement as amended or modified by the Amendment. Although Agent has informed Guarantor of the matters set forth above, and Guarantor has acknowledged the same, Guarantor understands and agrees neither Agent nor any Lender has any duty under the Credit Agreement, the Guaranty or any other agreement with Guarantor to so notify Guarantor or to seek such an acknowledgement, and nothing contained herein is intended to or shall create such a duty as to any advances or transaction hereafter.

AZNA, LLC,

a Delaware limited liability company

By: /s/Xxxx Xxxxxx

Name: Xxxx Xxxxxx

Title: Secretary and Treasurer

FINISAR SALES INC.,

a Delaware corporation

By: /s/Xxxx Xxxxxx

Name: Xxxx Xxxxxx

Title: Secretary and Treasurer

KAILIGHT PHOTONICS, INC.,

a Delaware corporation

By: /s/Xxxx Xxxxxx

Name: Xxxx Xxxxxx

Title: Secretary and Treasurer

Schedule E-3

Flextronics (Suzhou) Tech

Flextronics Int. Cork. B.V.

Flextronics International

Flextronics International Latin America

Flextronics International Poland

Flextronics Israel Ltd.

Flextronics Manufacturing

Flextronics Technology

Celestica Corporation

Celestica AG

Celestica Hong Kong Ltd.

Celestica Monterrey

Celestica Thailand LTD

Celestica Xxxxxxxx, X.X.

Jabil Circuit Sdn Bhd.

Schedule E-4

Huawei Technologies Co. Ltd.