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:
Jul. 24, 2018
Filed:
Sep. 10, 2015
Applicant:
Sumitomo Electric Device Innovations, Inc., Yokohama-shi, JP;
Inventor:
Ryota Teranishi, Yokohama, JP;
Assignee:
Sumitomo Electric Device Innovations, Inc., Yokohama-shi, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 5/50 (2006.01); H04B 10/291 (2013.01); H01S 5/0683 (2006.01); H01S 5/026 (2006.01); H01S 5/022 (2006.01); H01S 5/024 (2006.01); H01S 5/00 (2006.01);
U.S. Cl.
CPC ...
H01S 5/50 (2013.01); H01S 5/0265 (2013.01); H01S 5/0683 (2013.01); H04B 10/2914 (2013.01); H01S 5/0014 (2013.01); H01S 5/02216 (2013.01); H01S 5/02284 (2013.01); H01S 5/02415 (2013.01); H01S 2301/06 (2013.01);
Abstract
An optical amplifying apparatus and a method to control the same are disclosed. The apparatus includes a semiconductor device that integrates a variable optical attenuator (VOA) with a semiconductor optical amplifier (SOA). The VOA evaluates the optical power of an incident beam from a photocurrent generated therein. The attenuation of the VOA and the optical gain by the SOA are optionally determined based on the detected input power.