Exhibit 21.1

SUBSIDIARIES OF REGISTRANT*

Corona Optical Systems, Inc., a Delaware corporation

K2 Optronics, Inc. a Delaware corporation

EMCORE IRB Company, Inc., a New Mexico corporation

EMCORE Hong Kong, Limited, a Hong Kong corporation

Langfang EMCORE Optoelectronics Company, Limited, a Chinese corporation

Opticomm Corporation, a Delaware corporation

EMCORE Solar Power, Inc., a Delaware corporation

EMCORE Netherlands B.V.

EMCORE Spain S.L.

EMCORE IRB Company, LLC, a New Mexico limited liability company

*As of December 30, 2008