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:
Oct. 13, 2015
Filed:
Apr. 29, 2013
Applicant:
Furukawa Electric Co., Ltd., Tokyo, JP;
Inventor:
Mikiya Suzuki, Tokyo, JP;
Assignee:
Furukawa Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/08 (2006.01); H01S 3/10 (2006.01); H04B 10/079 (2013.01); H04B 10/294 (2013.01); H04J 14/02 (2006.01); H04B 10/291 (2013.01); H01S 3/067 (2006.01); H01S 3/094 (2006.01); H01S 3/13 (2006.01);
U.S. Cl.
CPC ...
H01S 3/10015 (2013.01); H04B 10/0797 (2013.01); H04B 10/294 (2013.01); H04B 10/2912 (2013.01); H04J 14/0221 (2013.01); H01S 3/06754 (2013.01); H01S 3/094007 (2013.01); H01S 3/1301 (2013.01); H01S 2301/04 (2013.01);
Abstract
An optical amplifying apparatus that amplifies a wavelength-division multiplexed (WDM) optical signal includes an input section, a laser light source, a double-clad optical fiber, a gain equalizer, and a residual pump light attenuating section that attenuates a residual pump light outputted from the double-clad optical fiber. The residual pump light attenuating section is disposed such that the residual pump light of the laser light is incident on the residual pump light attenuating section before being incident on an isolator.