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. 29, 2001
Filed:
Sep. 22, 1999
Applicant:
Inventors:
Hirohiko Kobayashi, Kawasaki, JP;
Mitsuru Ekawa, Kawasaki, JP;
Nirou Okazaki, Kawasaki, JP;
Shouichi Ogita, Kawasaki, JP;
Haruhisa Soda, Kawasaki, JP;
Haruhiko Tabuchi, Kawasaki, JP;
Takuya Fujii, Kawasaki, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01L 2/100 ;
U.S. Cl.
CPC ...
H01L 2/100 ;
Abstract
An optical semiconductor device of the present invention is provided with a core layer having a quantum well layer in that film thickness gets thinner from a inner region to an end portion in an optical waveguide region.