The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 18, 2007
Filed:
Sep. 25, 2003
Applicants:
John Chen, Rowland Heights, CA (US);
Robert Shih, Arcadia, CA (US);
Chun Lei, Los Gatos, CA (US);
Inventors:
Assignee:
Finisar Corporation, Sunnyvale, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A semiconductor laser formed from a semiconductor wafer has an active layer, at last two optical cladding layers, and a ridge waveguide. A ridge top surface of the ridge waveguide is deposited from a first surface of the semiconductor laser wafer by a first height. A plurality of semiconductor mesas are formed on the semiconductor laser wafer and have mesa top surfaces disposed from the first surface by a second height greater than the first height so that the plurality of semiconductor mesas shield the ridge waveguide from mechanical damage.