Filed  Pursuant to Rule 424(b)(4)
                                                      Registration No. 333-65526


                           Prospectus Supplement No. 8
                       To Prospectus Dated August 31, 2001

                                  $175,000,000

                                  ------------

                               EMCORE Corporation
                   5% Convertible Subordinated Notes Due 2006
           and the Common Stock Issuable Upon Conversion of the Notes

          This  prospectus  supplement  relates  to the  resale  by the  selling
securityholders  of  5%  convertible  subordinated  notes  due  2006  of  EMCORE
Corporation and the shares of common stock, no par value, of EMCORE  Corporation
issuable upon the conversion of the notes.

          This  prospectus  supplement  should be read in  conjunction  with the
prospectus dated August 31, 2001, and the prospectus supplements dated September
18, 2001,  October 10, 2001,  October 30, 2001,  November 30, 2001,  January 10,
2002,  February 1, 2002 and May 22,  2002,  which are to be  delivered  with the
prospectus  supplement.  All  capitalized  terms  used but not  defined  in this
prospectus supplement shall have the meanings given them in the prospectus.

          The  table  below  sets  forth  information  as  of  the  date  hereof
concerning  beneficial ownership of the notes of the selling  securityholders as
listed below. All information concerning beneficial ownership has been furnished
by the selling securityholders.


                                                                                         
                                       Principal Amount of
                                        Maturity of Notes     Percentage of     Number of Shares     Percentage of
                                       Beneficially Owned        Notes           of Common Stock      Common Stock
Name                                    that May be Sold       Outstanding     That May Be Sold(1)   Outstanding(2)(3)
- --------------------------------       -------------------    -------------    -------------------   -----------------
Pioneer High Yield Fund                    $1,000,000(4)            *               20,507                   *
60 State St.
Boston, MA 02109

Pioneer Fund - US High Yield               $1,000,000               *               20,507                   *
Corporate Bond Sub-Fund
60 State St.
Boston, MA 02109


- ---------------
*    Less than 1%

(1)  Assumes  conversion  of all the  holder's  notes at a  conversion  price of
     $48.7629 per share of common stock.  However, this conversion price will be
     subject to adjustment  as described in the  accompanying  prospectus  under
     "Description  of Notes-Right  of  Conversion."  As a result,  the amount of
     common stock issuable upon conversion of the notes may increase or decrease
     in the future.

(2)  Calculated  based on Rule  13d-3(d)(i) of the Exchange Act using 35,408,474
     shares of common stock  outstanding  as of August 24, 2001. In  calculating
     this amount, we treated as outstanding the number of shares of common stock
     issuable upon conversion of all of that particular holder's notes. However,
     we did not assume the conversion of any other holder's notes.

(3) The amounts presented herein are in addition to those reported by the selling securityholders in the accompanying prospectus dated August 31, 2001 and the accompanying prospectus supplements dated September 18, 2001, October 10, 2001, October 30, 2001, November 30, 2001, January 10, 2002 February 1, 2002 and May 22, 2002. (4) Does not inlcude $55,165,000 aggregate principal of Notes that may be resold pursuant to earlier prospectus supplements. ------------------- INVESTING IN THE SECURITIES OFFERED HEREBY INVOLVES A HIGH DEGREE OF RISK. SEE "RISK FACTORS" BEGINNING ON PAGE 10 OF THE ACCOMPANYING PROSPECTUS. THE SECURITIES AND EXCHANGE COMMISSION AND STATE SECURITIES REGULATORS HAVE NOT APPROVED OR DISAPPROVED OF THESE SECURITIES OR DETERMINED IF THIS PROSPECTUS SUPPLEMENT OR THE ACCOMPANYING PROSPECTUS IS TRUTHFUL OR COMPLETE. ANY REPRESENTATION TO THE CONTRARY IS A CRIMINAL OFFENSE. ------------------- The date of this Prospectus Supplement is June 17, 2002. -2-