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. 30, 2016
Filed:
Sep. 11, 2015
Applicant:
Fujikura Ltd., Tokyo, JP;
Inventors:
Assignee:
FUJIKURA LTD., Tokyo, JP;
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/00 (2006.01); H01S 3/067 (2006.01); H01S 3/091 (2006.01); H01S 3/0941 (2006.01); H01S 3/16 (2006.01);
U.S. Cl.
CPC ...
H01S 3/0672 (2013.01); H01S 3/0675 (2013.01); H01S 3/06729 (2013.01); H01S 3/06754 (2013.01); H01S 3/091 (2013.01); H01S 3/09415 (2013.01); H01S 3/1618 (2013.01); H01S 2301/20 (2013.01);
Abstract
The refractive index of the first core portionis higher than that of a clad, and the refractive index of the second core portionis higher than that of the first core portion. When light of the LP01 mode and light of the LP11 mode are standardized by power, in the core, an active element that stimulates to emit light of the predetermined wavelength is doped at a higher concentration in at least a part of an area where power of light of the LP01 mode is larger than that of light of the LP11 mode than at least a part of an area where the power of light of the LP11 mode is larger than that of light of the LP01 mode.