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:
May. 05, 2015
Filed:
Aug. 09, 2013
Applicant:
Furukawa Electric Co., Ltd., Tokyo, JP;
Inventors:
Kouhei Kinugawa, Tokyo, JP;
Hidehiro Taniguchi, Tokyo, JP;
Assignee:
Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/00 (2006.01); H01S 5/20 (2006.01); H01S 5/22 (2006.01); H01S 5/042 (2006.01); B82Y 20/00 (2011.01); H01S 5/022 (2006.01); H01S 5/024 (2006.01); H01S 5/028 (2006.01); H01S 5/16 (2006.01); H01S 5/343 (2006.01); H01S 5/02 (2006.01);
U.S. Cl.
CPC ...
H01S 5/20 (2013.01); H01S 5/22 (2013.01); H01S 5/02284 (2013.01); H01S 5/02415 (2013.01); H01S 5/02438 (2013.01); H01S 5/02476 (2013.01); H01S 5/028 (2013.01); H01S 5/0425 (2013.01); H01S 5/16 (2013.01); H01S 5/34313 (2013.01); H01S 5/222 (2013.01); H01S 2301/176 (2013.01); H01S 5/2086 (2013.01); H01S 5/0202 (2013.01); B82Y 20/00 (2013.01);
Abstract
An optical device includes a ridge semiconductor laser element formed on a substrate, a first insulating film coating a lateral wall portion of a ridge structure of the ridge semiconductor laser element, and a second insulating film coating the ridge structure from above the first insulating film in an end portion region of the ridge structure. The second insulating film has a density lower than a density of the first insulating film.