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:
Aug. 01, 2006
Filed:
Jul. 02, 2002
Toshio Kimura, Tokyo, JP;
Masashi Nakae, Tokyo, JP;
Toshio Kimura, Tokyo, JP;
Masashi Nakae, Tokyo, JP;
The Furukawa Electric Co., LTD, Tokyo, JP;
Abstract
A semiconductor laser module includes a polarization direction transforming part which transforms polarization directions of first and second laser beams such that they are orthogonal to each other even if a polarization dependent optical isolator is utilized in the semiconductor laser module. The configuration allows the two laser beams to propagate through the birefringence element to the output port without each splitting into an ordinary ray and an extraordinary ray on entering the birefringence element, and therefore free from decrease of optical power reaching the output port. Thus, high power semiconductor laser modules can be provided.