Ciena Corporation (NASDAQ:CIEN) will announce unaudited results for its fiscal 2008 fourth quarter and year end on Thursday, December 11, 2008, via Business Wire and First Call before the open of the financial markets. The press release also will be available on Ciena’s website at www.ciena.com.

In conjunction with the announcement, Ciena’s management will host a live webcast beginning at 8:30 AM (Eastern) on December 11, 2008. Interested listeners may access the live web broadcast at www.ciena.com.

Rebroadcast Information

For those listeners unable to participate in the live broadcast on Thursday, December 11, an archived version of the webcast will be available shortly following the conclusion of the live call in the Investor Relations/Events section of Ciena’s website at: www.ciena.com.

About Ciena

Ciena specializes in network transition. We provide the flexible platforms, intelligent software and professional services to build converged networks for enhanced services and applications. With a growing global presence, Ciena leverages its heritage of practical innovation to deliver maximum performance and economic value in communications networks worldwide. For more information, visit www.ciena.com.