UNCONDITIONAL GUARANTY

This continuing UNCONDITIONAL GUARANTY (“Guaranty”) is entered into as of March
28, 2014 by each Person listed on the signature page hereof (individually and
collectively, jointly and severally, the “Guarantor”), in favor of SILICON
VALLEY BANK, a California corporation with a loan production office located at
2400 Hanover Street, Palo Alto, CA 94304 (“Bank”).

RECITALS
A.    Concurrently herewith, OCLARO, INC., a Delaware corporation (“Parent”) and
OCLARO TECHNOLOGY LIMITED, a company incorporated under the laws of England and
Wales (“Borrower”) have entered into that certain Loan and Security Agreement
with Bank, dated as of the date hereof (as may be amended, restated, or
otherwise modified from time to time, the “Loan Agreement”), pursuant to which
Bank has agreed to make certain advances of money and to extend certain
financial accommodations to Borrower (collectively, the “Loans”), subject to the
terms and conditions set forth therein. Capitalized terms used but not otherwise
defined herein shall have the meanings given them in the Loan Agreement.
B.    In consideration of the agreement of Bank to make the Loans to Borrower
under the Loan Agreement, Guarantor is willing to guaranty the full payment and
performance by Borrower of all of its obligations thereunder and under the other
Loan Documents, all as further set forth herein.
C.    Each Guarantor is an affiliate of Borrower and will obtain substantial
direct and indirect benefit from the Loans made by Bank to Borrower under the
Loan Agreement.
NOW, THEREFORE, to induce Bank to enter into the Loan Agreement, and for other
good and valuable consideration, the receipt and adequacy of which are hereby
acknowledged, and intending to be legally bound, Guarantor hereby represents,
warrants, covenants and agrees as follows:

Section 1.    Guaranty.

1.1    Unconditional Guaranty of Payment. In consideration of the foregoing,
Guarantor hereby irrevocably, absolutely and unconditionally guarantees to Bank
the prompt and complete payment and performance when due (whether at stated
maturity, by acceleration or otherwise) of all Obligations. Guarantor agrees
that it shall execute such other documents or agreements and take such action as
Bank shall reasonably request to effect the purposes of this Guaranty.
1.2    Separate Obligations. These obligations are independent of Borrower’s
obligations and separate actions may be brought against Guarantor (whether
action is brought against Borrower or whether Borrower is joined in the action).
Section 2.    Representations and Warranties.

Guarantor hereby makes the representations and warranties set forth in Section 5
of the Loan Agreement (which representations and warranties are incorporated by
reference herein), with reference to “Borrower” therein being deemed a reference
to “Guarantor” save that in the case of Oclaro Innovations LLP, for the purposes
of Section 5.1 it represents and warrants that it is a limited liability
partnership instead of a private limited company.
Section 3.    General Waivers.

Guarantor waives:

(a) Any right to require Bank to (i) proceed against Borrower or any other
person; (ii) proceed against or exhaust any security or (iii) pursue any other
remedy. Bank may exercise or not exercise any right or remedy

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it has against Borrower or any security it holds (including the right to
foreclose by judicial or nonjudicial sale) without affecting Guarantor’s
liability hereunder.
(b) Any defenses from disability or other defense of Borrower (other than the
defense that the Obligations have been fully paid), or from the cessation of
Borrower’s liabilities.
(c) Any setoff, defense or counterclaim against Bank, and any claim, set-off or
other rights which any Guarantor may have at any time against the Debtor.
(d) any defense from the absence, impairment or loss of any right of
reimbursement or subrogation or any other rights against Borrower. Until
Borrower’s obligations to Bank have been paid and the Borrower’s financing
arrangements have been terminated, Guarantor has no right of subrogation or
reimbursement or other rights against Borrower.
(e) Any right to enforce any remedy that Bank has against Borrower.
(f) Any rights to participate in any security held by Bank.
(g) Any demands for performance, notices of nonperformance or of new or
additional indebtedness incurred by Borrower to Bank. Guarantor is responsible
for being and keeping itself informed of Borrower’s financial condition.
(h) The benefit of any act or omission by Bank which directly or indirectly
results in or aids the discharge of Borrower from any of the Obligations by
operation of law or otherwise.
(i) The benefit of California Civil Code Section 2815 permitting the revocation
of this Guaranty as to future transactions and the benefit of California Civil
Code Sections 2809, 2810, 2819, 2839, 2845, 2848, 2849, 2850, 2899 and 1432 with
respect to certain suretyship defenses.
(j) With respect to Oclaro (Canada) Inc. (the “Canadian Guarantor”), the benefit
of any defense arising by reason of the invalidity, illegality or lack of
enforceability of the Loan Agreement or any part thereof of any security or
guarantee, or by reason of any incapacity, lack of authority, or other defense
of the Borrower or any other person, or by reason of any limitation,
postponement, prohibition on the Bank’s right to payment under the Loan
Agreement.
(k) With respect to the Canadian Guarantor, the benefit of any defense arising
by reason of any failure by the Bank to obtain, perfect or maintain a perfected
or prior (or any) security interest in or lien or encumbrance upon any property
of the Borrower, or any other person, or by reason of any interest of the Bank
in any property, whether as owner thereof or the holder of a security interest
therein or lien or encumbrance thereon, being invalidated, voided, declared
fraudulent or preferential or otherwise set aside, or by reason of any
impairment by the Bank of any right to recourse or collateral.
(l) With respect to the Canadian Guarantor, the benefit of any defense arising
by reason of any failure by the Bank to (i) marshal any assets, or (ii) give to
the Borrower or any Guarantor notice of any sale or other disposition of any
property.
(m) With respect to the Canadian Guarantor, the benefit of any defense based
upon or arising out of any bankruptcy, insolvency, reorganization, moratorium,
arrangement, readjustment of debt, liquidation or dissolution proceeding
commenced by or against the Borrower or any other person, including any
discharge of, or bar against collecting the Obligations, in or as a result of
any such proceeding.

In addition the liability of Guarantor shall not be affected nor shall this
Guaranty be discharged or reduced by reason of:

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(a)    the incapacity or any change in the name, style or constitution of
Borrower or any other Guarantor or any other person liable from time to time,
directly or indirectly, for the Obligations;
 

(b)    any Insolvency Proceeding in respect of any Guarantor;

(c)    Bank granting any time, indulgence, waiver or concession to Borrower or
any other Guarantor;
 

(d)    Bank compounding with, discharging, releasing, terminating, amending,
varying, novating, supplementing or increasing the liability of Borrower or any
other Guarantor for the Obligations;
 

(e)    Bank renewing, determining, terminating, amending, varying, novating,
supplementing or increasing any accommodation, facility or transaction or
otherwise dealing with the same in any manner whatsoever or concurring in,
accepting or varying any compromise, arrangement or settlement with Borrower or
any other Guarantor;

(f)    Bank omitting to claim or enforce payment from Borrower or any other
Guarantor;
 

(g)    any invalidity, illegality, unenforceability, irregularity or frustration
of any actual or purported obligation of, or any security held from Borrower or
any other Guarantor;
 

(h)    any act or omission by Bank or any other person in taking up, perfecting
or enforcing any security, indemnity or guaranty from or Borrower or any other
Guarantor; or

(i)    any act or omission which would not have discharged or affected the
liability of any Guarantor had it been Borrower instead of a Guarantor or by
anything done or omitted which but for this provision might operate to exonerate
or discharge Guarantor or otherwise reduce or extinguish its liability under
this Guaranty.

Section 4.    Real Property Security Waiver. Guarantor acknowledges that, to the
extent Guarantor has or may have rights of subrogation or reimbursement against
Borrower for claims arising out of this Guaranty, those rights may be impaired
or destroyed if Bank elects to proceed against any real property security of
Borrower by non-judicial foreclosure. That impairment or destruction could,
under certain judicial cases and based on equitable principles of estoppel, give
rise to a defense by Guarantor against its obligations under this Guaranty.
Without limiting the generality of the foregoing, Guarantor waives that defense
and any others arising from Bank’s election to pursue non-judicial foreclosure.
Without limiting the generality of the foregoing, Guarantor expressly waives all
rights, benefits and defenses, if any, applicable or available to Guarantor
under either California Code of Civil Procedure Sections 580a or 726, which
provide, among other things, that the amount of any deficiency judgment which
may be recovered following either a judicial or nonjudicial foreclosure sale is
limited to the difference between the amount of any indebtedness owed and the
greater of the fair value of the security or the amount for which the security
was actually sold. Without limiting the generality of the foregoing, Guarantor
further expressly waives all rights, benefits and defenses, if any, applicable
or available to Guarantor under either California Code of Civil Procedure
Sections 580b, providing that no deficiency may be recovered on a real property
purchase money obligation, or 580d, providing that no deficiency may be
recovered on a note secured by a deed of trust on real property if the real
property is sold under a power of sale contained in the deed of trust.
Section 5.    Reinstatement. Notwithstanding any provision of the Loan Agreement
to the contrary, the liability of Guarantor hereunder shall be reinstated and
revived and the rights of Bank shall continue if and to the extent

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that for any reason any payment by or on behalf of Guarantor or Borrower is
rescinded or must be otherwise restored by Bank, whether as a result of any
proceedings in bankruptcy or reorganization or otherwise, all as though such
amount had not been paid. The determination as to whether any such payment must
be rescinded or restored shall be made by Bank in its sole discretion; provided,
however, that if Bank chooses to contest any such matter at the request of
Guarantor, Guarantor agrees to indemnify and hold harmless Bank from all costs
and expenses (including, without limitation, reasonable attorneys’ fees) of such
litigation. To the extent any payment is rescinded or restored, Guarantor’s
obligations hereunder shall be revived in full force and effect without
reduction or discharge for that payment.
Section 6.    No Waiver; Amendments. No failure on the part of Bank to exercise,
no delay in exercising and no course of dealing with respect to, any right
hereunder shall operate as a waiver thereof; nor shall any single or partial
exercise of any right hereunder preclude any other or further exercise thereof
or the exercise of any other right. The remedies herein provided are cumulative
and not exclusive of any remedies provided by law. This Guaranty may not be
amended or modified except by written agreement between Guarantor and Bank, and
no consent or waiver hereunder shall be valid unless in writing and signed by
Bank.
Section 7.    Compromise and Settlement. No compromise, settlement, release,
renewal, extension, indulgence, change in, waiver or modification of any of the
Obligations or the release or discharge of Borrower from the performance of any
of the Obligations shall release or discharge Guarantor from this Guaranty or
the performance of the obligations hereunder.
Section 8.    Notice. Any notice or other communication herein required or
permitted to be given shall be in writing and may be delivered in person or sent
by facsimile transmission, electronic mail, overnight courier, or by United
States mail, registered or certified, return receipt requested, postage prepaid
and addressed as follows:
If to Guarantor:
 
c/o Oclaro Technology Limited 
2560 Junction Avenue
San Jose, CA 95134
Attn: Pete Mangan - fax (408) 435-5025
Email: pete.mangan@oclaro.com
David Teichmann - fax (408) 904-4913
Email: david.teichmann@oclaro.com

If to Bank:
 
Silicon Valley Bank
2400 Hanover Street
Palo Alto, CA 94304
Attn: Ryan Edwards 
Fax: (       )
Email: redwards@svb.com
with a copy to:
 
Riemer & Braunstein LLP
Three Center Plaza
Boston, Massachusetts 02108
Attn: Charles W. Stavros, Esquire
Fax: (617) 880-3456
Email: cstavros@riemerlaw.com

or at such other address as may be substituted by notice given as herein
provided. Every notice, demand, request, consent, approval, declaration or other
communication hereunder shall be deemed to have been duly given or served on the
date on which personally delivered or sent by facsimile transmission, or
electronic mail, or three (3) Business Days after the same shall have been
deposited in the United States mail. If sent by overnight courier service, the
date of delivery shall be deemed to be the next Business Day after deposited
with such service.

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Section 9.    Entire Agreement and Execution. This Guaranty constitutes and
contains the entire agreement of the parties and supersedes any and all prior
and contemporaneous agreements, negotiations, correspondence, understandings and
communications between Guarantor and Bank, whether written or oral, respecting
the subject matter hereof. It is intended that this Guaranty shall take effect
as a deed in respect of Borrower notwithstanding the method of execution of this
Guaranty by the other parties hereto.
Section 10.     Severability. If any provision of this Guaranty is held to be
unenforceable under applicable law for any reason, it shall be adjusted, if
possible, rather than voided in order to achieve the intent of Guarantor and
Bank to the extent possible. In any event, all other provisions of this Guaranty
shall be deemed valid and enforceable to the full extent possible under
applicable law.
Section 11.    Subordination of Indebtedness. Any indebtedness or other
obligation of Borrower now or hereafter held by or owing to Guarantor is hereby
subordinated in time and right of payment to all obligations of Borrower to
Bank, except as such indebtedness or other obligation is expressly permitted to
be paid under the Loan Agreement; and such indebtedness of Borrower to Guarantor
is assigned to Bank as security for this Guaranty, and if Bank so requests,
after the occurrence and during the continuance of an Event of Default, shall be
collected, enforced and received by Guarantor in trust for Bank and to be paid
over to Bank on account of the Obligations of Borrower to Bank, but without
reducing or affecting in any manner the liability of Guarantor under the other
provisions of this Guaranty. At Bank’s request, any notes now or hereafter
evidencing such indebtedness of Borrower to Guarantor shall be marked with a
legend that the same are subject to this Guaranty and shall be delivered to
Bank.
Section 12.    Subrogration. Until all the Obligations have been paid,
discharged or satisfied in full (and notwithstanding payment of a dividend in
any liquidation or bankruptcy or under any compromise or arrangement) Guarantor
agrees that, without the prior written consent or in the absence of a written
direction from Bank, it shall not:
(a)    exercise its rights of subrogation, reimbursement and indemnity against
Borrower;
(b)    demand or accept repayment in whole or in part of any indebtedness now or
hereafter due to Guarantor from Borrower or from any other person liable from
time to time, directly or indirectly, for the Obligations;
(c)    take any step to enforce any right against Borrower or any other
Guarantor; or
(d)    claim any set off or counterclaim against Borrower or any other Guarantor
nor claim or prove in competition with Bank in the bankruptcy or liquidation of
Borrower or any other person liable as above nor have the benefit of, or share
in, any payment from or composition with, Borrower or any other person liable as
above or any other Collateral held by Bank for any Obligations.
Section 13.    Separate Property. Notwithstanding anything to the contrary
contained herein, Guarantor hereby expressly agrees that recourse may be had
against Guarantor’s separate property for the payment and performance of
Guarantor’s obligations hereunder.
Section 14.    Payment of Expenses. Guarantor shall pay, promptly on demand, all
Expenses incurred by Bank in defending and/or enforcing this Guaranty. For
purposes hereof, “Expenses” shall mean costs and expenses (including reasonable
fees and disbursements of any law firm or other external counsel and the
allocated cost of internal legal services and all disbursements of internal
counsel) for defending and/or enforcing this Guaranty (including those incurred
in connection with appeals or proceedings by or against any Guarantor under the
United States Bankruptcy Code, or any other bankruptcy or insolvency law,
including assignments for the benefit of creditors, compositions, extensions
generally with its creditors, or proceedings seeking reorganization,
arrangement, or other relief).
Section 15.    Assignment; Governing Law. This Guaranty shall be binding upon
and inure to the benefit of Guarantor and Bank and their respective successors
and assigns, except that Guarantor shall not have the right to assign its rights
hereunder or any interest herein without the prior written consent of Bank,
which may be granted or withheld in Bank’s sole discretion. Any such purported
assignment by Guarantor without Bank’s written consent shall

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be void. This Guaranty shall be governed by, and construed in accordance with,
the laws of the State of California without regard to principles thereof
regarding conflict of laws.
Section 16.    Third Party Rights. Any Person who is not a party to this
Agreement shall have no rights under the UK Contracts (Rights of Third parties)
Act 1999 to enforce or enjoy the benefits of any term of this Agreement.

Section 17.    PERSONAL JURISDICTION. GUARANTOR HEREBY IRREVOCABLY AGREES THAT
ANY LEGAL ACTION OR PROCEEDING WITH RESPECT TO THIS GUARANTY OR ANY OF THE
AGREEMENTS, DOCUMENTS OR INSTRUMENTS DELIVERED IN CONNECTION HEREWITH MAY BE
BROUGHT IN THE STATE AND FEDERAL COURTS LOCATED IN THE STATE OF CALIFORNIA AS
BANK MAY ELECT (PROVIDED THAT GUARANTOR ACKNOWLEDGES THAT ANY APPEALS FROM THOSE
COURTS MAY HAVE TO BE HEARD BY A COURT LOCATED OUTSIDE OF THE STATE OF
CALIFORNIA), AND, BY EXECUTION AND DELIVERY HEREOF, GUARATNOR ACCEPTS AND
CONSENTS TO, GENERALLY AND UNCONDITIONALLY, THE JURISDICTION OF THE AFORESAID
COURTS AND AGREES THAT SUCH JURISDICTION SHALL BE EXCLUSIVE, UNLESS WAIVED BY
BANK IN WRITING, WITH RESPECT TO ANY ACTION OR PROCEEDING BROUGHT BY GUARANTOR
AGAINST BANK. NOTHING HEREIN SHALL LIMIT THE RIGHT OF BANK TO BRING PROCEEDINGS
AGAINST GUARANTOR IN THE COURTS OF ANY OTHER JURISICTION, GUARANTOR HEREBY
WAIVES, TO THE FULL EXTENT PERMITTED BY LAW, ANY RIGHT TO STAY OR TO DISMISS ANY
ACTION OR PROCEEDING BROUGHT BEFORE SAID COURTS ON THE BASIS OF FORUM NON
CONVENIENS.
Section 18.    WAIVER OF JURY TRIAL. EACH OF BANK AND GUARANTOR HEREBY WAIVES,
TO THE FULL EXTENT PERMITTED BY APPLICABLE LAW, ANY RIGHT IT MAY HAVE TO A TRIAL
BY JURY WITH RESPECT TO ANY LITIGATION DIRECTLY OR INDIRECTLY ARISING OUT OF,
UNDER OR IN CONNECTION WITH THIS GUARANTY. EACH PARTY HERETO (A) CERTIFIES THAT
NO REPRESENTATIVE, AGENT OR ATTORNEY OF ANY OTHER PARTY HAS REPRESENTED,
EXPRESSLY OR OTHERWISE, THAT SUCH OTHER PARTY WOULD NOT, IN THE EVENT OF
LITIGATION, SEEK TO ENFORCE THE FOREGOING WAIVER, AND (B) ACKNOWLEDGES THAT IT
AND THE OTHER PARTY HERETO HAVE BEEN INDUCED TO ENTER INTO THIS GUARANTY AND ANY
RELATED INSTRUMENTS, AS APPLICABLE, BY, AMONG OTHER THINGS, THE MUTUAL WAIVERS
AND CERTIFICATIONS IN THIS SECTION 18.

WITHOUT INTENDING IN ANY WAY TO LIMIT THE PARTIES’ AGREEMENT TO WAIVE THEIR
RESPECTIVE RIGHT TO A TRIAL BY JURY, if the above waiver of the right to a trial
by jury is not enforceable, the parties hereto agree that any and all disputes
or controversies of any nature between them arising at any time shall be decided
by a reference to a private judge, mutually selected by the parties (or, if they
cannot agree, by the Presiding Judge of the Santa Clara County, California
Superior Court) appointed in accordance with California Code of Civil Procedure
Section 638 (or pursuant to comparable provisions of federal law if the dispute
falls within the exclusive jurisdiction of the federal courts), sitting without
a jury, in Santa Clara County, California; and the parties hereby submit to the
jurisdiction of such court. The reference proceedings shall be conducted
pursuant to and in accordance with the provisions of California Code of Civil
Procedure §§ 638 through 645.1, inclusive. The private judge shall have the
power, among others, to grant provisional relief, including without limitation,
entering temporary restraining orders, issuing preliminary and permanent
injunctions and appointing receivers. All such proceedings shall be closed to
the public and confidential and all records relating thereto shall be
permanently sealed. If during the course of any dispute, a party desires to seek
provisional relief, but a judge has not been appointed at that point pursuant to
the judicial reference procedures, then such party may apply to the Santa Clara
County, California Superior Court for such relief. The proceeding before the
private judge shall be conducted in the same manner as it would be before a
court under the rules of evidence applicable to judicial proceedings. The
parties shall be entitled to discovery which shall be conducted in the same
manner as it would be before a court under the rules of discovery applicable to
judicial proceedings. The private judge shall oversee discovery and may enforce
all discovery rules and orders applicable to judicial proceedings in the same
manner as a trial court judge. The parties agree that the selected or appointed
private judge shall have the power to decide all issues in the action or
proceeding, whether of fact or of law, and shall report a statement of decision
thereon pursuant to California Code of Civil Procedure § 644(a). Nothing in this
paragraph shall limit the right of any

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party at any time to exercise self-help remedies, foreclose against collateral,
or obtain provisional remedies. The private judge shall also determine all
issues relating to the applicability, interpretation, and enforceability of this
paragraph.

[Signature page follows.]

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IN WITNESS WHEREOF, the undersigned has entered into this Unconditional
Guaranty, effective as of the date first written above.

GUARANTOR:

OCLARO, INC.
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: Chief Financial Officer
OCLARO TECHNOLOGY, INC.
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: President, Treasurer and Secretary
OCLARO (NORTH AMERICA), INC.
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: Chief Executive Officer, Chief Financial Officer and Secretary
MINTERA CORPORATION
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: President, Chief Financial Officer and Secretary
OPNEXT, INC.
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: Chief Executive Officer, President, Chief Financial Officer and Secretary
PINE PHOTONICS COMMUNICATIONS, INC.
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: President, Treasurer and Secretary
OPNEXT SUBSYSTEMS INC.
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: President, Chief Financial Officer and Secretary
BOOKHAM NOMINEES LIMITED
By: /s/ James Haynes 
Name: James Haynes 
Title: Director

OCLARO INNOVATIONS LLP
By Oclaro Inc., its member
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: Chief Financial Officer 
By Oclaro (North America) Inc., its member
By: /s/ Pete J. Mangan 
Name: Pete Mangan 
Title: Chief Executive Officer, Chief Financial Officer and Secretary 

[Signature Page – Unconditional Guaranty]