Form: SC 13D/A

Schedule filed to report acquisition of beneficial ownership of 5% or more of a class of equity securities

September 18, 2014

Exhibit 3

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k) under the Securities Exchange Act of 1934, as amended, each of the undersigned hereby agrees to the joint filing on behalf of each of them of a statement on Schedule 13D (including amendments thereto) with respect to the Common Stock of EMCORE Corporation, and that this Agreement be included as an Exhibit to such joint filing.

Each of the undersigned acknowledges that each shall be responsible for the timely filing of any statement (including amendments) on Schedule 13D, and for the completeness and accuracy of the information concerning him or it contained herein, but shall not be responsible for the completeness and accuracy of the information concerning the other persons making such filings, except to the extent that he or it knows or has reason to believe that such information is inaccurate.

Dated: September 17, 2014

[Signature Page Follows]


BECKER DRAPKIN MANAGEMENT, L.P.
              By:  

/s/ Richard J. Birns

  Name: Richard J. Birns
  Title: Attorney-in-Fact
BECKER DRAPKIN PARTNERS (QP), L.P.
              By:  

/s/ Richard J. Birns

  Name: Richard J. Birns
  Title: Attorney-in-Fact
BECKER DRAPKIN PARTNERS, L.P.
              By:  

/s/ Richard J. Birns

  Name: Richard J. Birns
  Title: Attorney-in-Fact
BC ADVISORS, LLC
              By:  

/s/ Richard J. Birns

  Name: Richard J. Birns
  Title: Attorney-in-Fact
STEVEN R. BECKER
              By:  

/s/ Richard J. Birns

  Name: Richard J. Birns
  Title: Attorney-in-Fact
MATTHEW A. DRAPKIN
              By:  

/s/ Richard J. Birns

  Name: Richard J. Birns
  Title: Attorney-in-Fact