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:
Nov. 23, 2010
Filed:
Apr. 04, 2007
Applicants:
Shoji Tanigawa, Sakura, JP;
Hironori Tanaka, Sakura, JP;
Manabu Saito, Sakura, JP;
Tetsuya Sakai, Sakura, JP;
Tomoharu Kitabayashi, Sakura, JP;
Inventors:
Shoji Tanigawa, Sakura, JP;
Hironori Tanaka, Sakura, JP;
Manabu Saito, Sakura, JP;
Tetsuya Sakai, Sakura, JP;
Tomoharu Kitabayashi, Sakura, JP;
Assignee:
Fujikura Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G02B 6/26 (2006.01); G02B 6/287 (2006.01); H04B 10/17 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical pumping device is provided in which a multi-core fiber obtained by bundling up a plurality of optical fibers, which are input ports, and a double clad fiber for optical pumping are spliced through a bridge fiber composed of a double clad fiber having a tapered shape. Accordingly, it is possible to efficiently couple signal light and pumping light to the double clad fiber for optical pumping.