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:
Apr. 11, 2006
Filed:
Oct. 01, 2002
Goro Sasaki, Yokohama, JP;
Goro Sasaki, Yokohama, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Abstract
The present invention provides a multimode semiconductor laser module. The module comprises a multimode laser element, an optical filter, a light-receiving elementand a temperature regulator. Multimode light from the laser elementis transmitted through the filterand then detected by the light-receiving element. The output of the light-receiving elementchanges according to the degree of overlap between the oscillation wavelength spectrum of the laser elementand the transmission wavelength region of the filter. The temperature regulatormodifies the oscillation wavelength region toward the desired region in response to the output of the light-receiving element. As a result, the oscillation wavelength region is stabilized.