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. 20, 2019
Filed:
Jan. 29, 2016
Applicant:
Nec Corporation, Tokyo, JP;
Inventors:
Masao Morie, Tokyo, JP;
Kouichi Suzuki, Tokyo, JP;
Assignee:
NEC CORPORATION, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/079 (2013.01); H04B 10/61 (2013.01);
U.S. Cl.
CPC ...
H04B 10/07955 (2013.01); H04B 10/611 (2013.01); H04B 10/616 (2013.01); H04B 10/6166 (2013.01);
Abstract
A coherent optical receiver device includes a first unit configured to output local oscillation light having a predetermined wavelength, a second unit configured to receive an optical signal to have been inputted by making the optical signal interfere with the local oscillation light, a third unit configured to process electrically the optical signal received by the second unit, a fourth unit configured to monitor at least a part of power of the optical signal, and a fifth unit configured to control power of the local oscillation light output by the first unit depending on an optical power monitored by the fourth unit.