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. 07, 2020
Filed:
Oct. 26, 2016
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventor:
Masahiro Kashiwagi, Sakura, JP;
Assignee:
FUJIKURA LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/13 (2006.01); H01S 3/067 (2006.01); H01S 3/10 (2006.01); G01J 1/42 (2006.01); H01S 3/23 (2006.01);
U.S. Cl.
CPC ...
H01S 3/1305 (2013.01); G01J 1/4257 (2013.01); H01S 3/067 (2013.01); H01S 3/10015 (2013.01); H01S 3/2383 (2013.01);
Abstract
Reflection resistances of respective fiber lasers in a state where an entire fiber laser system is in operation are evaluated. Each of fiber lasers (through) includes (i) a laser beam measuring section () configured to measure a power of a laser beam which a low reflection FBG () has transmitted therethrough and (ii) a Stokes beam measuring section () configured to measure a power of a Stokes beam which a high reflection FBG () has transmitted therethrough.