Exhibit 23.1

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We have issued our report dated August 29, 2008, with respect to the consolidated financial statements of Bookham, Inc. contained in Amendment No. 1 to the Registration Statement on Form S-4. We consent to the use of the aforementioned report in the Registration Statement on Form S-4, and to the use of our name as it appears under the caption “Experts.”

/s/ GRANT THORNTON LLP

San Francisco, CA
March 12, 2009