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:
Jan. 27, 2004
Filed:
Sep. 14, 2000
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
The present invention provides a semiconductor laser module. A semiconductor laser module ( A) comprising a semiconductor laser element ( ) and an optical fiber ( ) optically coupled by an optical coupling means ( ) is provided, wherein on the optical fiber ( ), a reflective portion ( ) and a birefringence fiber ( ) are provided, the birefringence fiber ( ) is provided at least from the incident end on the side of the optical coupling means ( ) to immediately before the reflective portion ( ), a connection portion ( ) is provided at least at one point in the longitudinal direction of the birefringence fiber ( ), and in the connection portion ( ), two eigen axes of X axes and Y axes are connected so that the eigen axes intersect each other at an established angle &thgr;.