LIMITED POWER OF ATTORNEY FOR
                        SECTION 16 REPORTING OBLIGATIONS

      The undersigned's hereby makes, constitutes and appoints Anne-Marie Frisch
and Jennifer Hankes Painter as the undersigned's true and lawful
attorneys-in-fact, with full power and authority as hereinafter described on
behalf of and in the name, place and stead of the undersigned to:

(l) prepare, execute, acknowledge, deliver and file Forms 3,4, and 5 (including
any amendments thereto) with respect to the securities of MRV Communications,
Inc., a Delaware corporation (the "Company"), with the United States Securities
and Exchange Commission, any national securities exchanges and the Company, as
considered necessary or advisable under Section l6(a) of the Securities Exchange
Act of 1934 and the rules and regulations promulgated thereunder, as amended
from time to time (the "Exchange Act");

(2) seek or obtain, as the undersigned's representative and on the undersigned's
behalf, information on transactions in the Company's securities from any third
party, including brokers, employee benefit plan administrators and trustees, and
the undersigned hereby authorizes any such person to release any such
information to the undersigned and approves and ratifies any such release of
information; and

(3) perform any and all other acts which in the discretion of such
attorneys-in-fact are necessary or desirable for and on behalf of the
undersigned in connection with the foregoing.

The undersigned acknowledges that:

(1) this Power of Attorney authorizes, but does not require, such
attorneys-in-fact to act in their discretion on information provided to them
without independent verification of such information;

(2) any documents prepared and/or executed by such attorneys-in-fact on behalf
of the undersigned pursuant to this Power of Attorney will be in such form and
will contain such information and disclosure as they, in their discretion, deem
necessary or desirable;

(3) neither the Company nor the attorneys-in-fact assume (i) any liability for
the undersigned's responsibility to comply with the requirement of the Exchange
Act, (ii) any liability of the undersigned for any failure to comply with such
requirements, or (iii) any obligation or liability of the undersigned for profit
disgorgement under Section l6(b) of the Exchange Act; and

(4) this Power of Attorney does not relieve the undersigned from responsibility
for compliance with the undersigned's obligations under the Exchange Act,
including without limitation the reporting requirements under Section 16 of the
Exchange Act.

      The undersigned hereby gives and grants the foregoing attorneys-in-fact
full power and authority to do and perform all and every act and thing
whatsoever requisite, necessary or appropriate to be done in and about the
foregoing matters as fully to all intents and purposes as the undersigned might
or could do if present, hereby ratifying all that such attorneys-in-fact of, for
and on behalf of the undersigned, shall lawfully do or cause to be done by
virtue of this Limited Power of Attorney.

      This Power of Attorney shall remain in full force and effect until revoked
by the undersigned in a signed writing delivered to such attorneys-in-fact.

      IN WITNESS WHEREOF, the undersigned has caused this Power of Attorney to
be executed as of this 5th day of March, 2012.

                   /s/ Glenn Tongue
                   -------------------------------
                   GLENN TONGUE

STATE OF NEW YORK



      On March 5, 2012, before me R. ANOUSKA BISWAS, NOTARY PUBLIC,
Personally appeared GLENN TONGUE who proved to me on the basis of
satisfactory evidence to be the person whose name is subscribed to the within
instrument and acknowledged to me that he executed the same in his authorized
capacity, and that by his signature on the instrument the person, or the entity
upon behalf of which the person acted, executed the instrument.

      I certify under PENALTY OF PERJURY under the laws of the State of
New York that the foregoing paragraph is true and correct.

      WITNESS my hand and official seal.

Signature   /s/ R. Anouska Biswas                  [SEAL]
            ------------------------------------
            R. ANOUSKA BISWAS, Notary Public