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:
Nov. 15, 2005
Filed:
May. 14, 2002
Applicants:
Masahiko Namiwaka, Tokyo, JP;
Masahiro Kanda, Tokyo, JP;
Inventors:
Masahiko Namiwaka, Tokyo, JP;
Masahiro Kanda, Tokyo, JP;
Assignee:
NEC Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S003/08 ;
U.S. Cl.
CPC ...
Abstract
Fiber gratings (), () having substantially the same reflection center wavelength are provided in an optical fiber (). The fiber gratings (), () reflects to the semiconductor laser element (), only a component at the reflection center wavelength of laser light emitted from the semiconductor laser element ().