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. 10, 2023
Filed:
Jun. 11, 2019
Applicant:
Furukawa Electric Co., Ltd., Tokyo, JP;
Inventors:
Assignee:
FURUKAWA ELECTRIC CO., LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 5/50 (2006.01); H01S 5/0683 (2006.01); G02B 27/09 (2006.01); G02B 27/10 (2006.01); G02B 27/30 (2006.01); H01S 5/00 (2006.01); H01S 5/026 (2006.01);
U.S. Cl.
CPC ...
H01S 5/509 (2013.01); G02B 27/0955 (2013.01); G02B 27/10 (2013.01); G02B 27/30 (2013.01); H01S 5/0085 (2013.01); H01S 5/0267 (2013.01); H01S 5/0683 (2013.01);
Abstract
A disclosed semiconductor laser module includes a semiconductor laser device; a semiconductor optical amplifier configured to receive laser light emitted from the semiconductor laser device and amplify the laser light that has been received; and a first light receiving device that measures an intensity of a part of the laser light emitted from the semiconductor laser device, for monitoring a wavelength of the laser light, wherein the semiconductor optical amplifier is located rearward in relation to a light receiving surface of the first light receiving device along a propagation direction of the laser light emitted from the semiconductor device.