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:
Sep. 20, 2022
Filed:
Dec. 13, 2018
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventor:
Yohei Kasai, Chiba, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2013.01); H01S 5/40 (2006.01); G02B 6/42 (2006.01); H01S 5/02326 (2021.01); H01S 5/02251 (2021.01); H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
H01S 5/4012 (2013.01); G02B 6/4207 (2013.01); H01S 5/02326 (2021.01); H01S 5/005 (2013.01); H01S 5/02251 (2021.01);
Abstract
A laser module includes: an optical fiber; a plurality of semiconductor laser devices that includes a first semiconductor laser device and a second semiconductor laser device; a condenser lens that condenses laser beams emitted from the plurality of semiconductor laser devices and optically couples the laser beams to the optical fiber; a first terminal that supplies a first drive current to the first semiconductor laser device; and a second terminal that supplies a second drive current that to the second semiconductor laser device. The second drive current is smaller than the first drive current.