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:
Feb. 25, 2003
Filed:
Sep. 22, 2000
Applicant:
Inventors:
Assignee:
The Furukawa Electric Co., Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 6/36 ;
U.S. Cl.
CPC ...
G02B 6/36 ;
Abstract
A semiconductor laser module comprises a semiconductor laser having a front end facet from which output light is emitted, and an optical fiber on which the output light emitted from the semiconductor laser is incident, where the optical fiber has a light feedback portion for reflecting light at a predetermined wavelength. The semiconductor laser is accommodated in a package together with one end side of the optical fiber. The light feedback portion includes a first light feedback portion set at a predetermined reflection center wavelength for determining an oscillating wavelength of the semiconductor laser, and at least one second light feedback portion.