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. 07, 2018
Filed:
Dec. 11, 2014
Applicant:
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Inventors:
Hiroaki Shintaku, Chiyoda-ku, JP;
Kentaro Enoki, Chiyoda-ku, JP;
Assignee:
Mitsubishi Electric Corporation, Chiyoda-ku, JP;
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/00 (2013.01); G02F 1/01 (2006.01); H04B 10/54 (2013.01); H04B 10/25 (2013.01); G02F 1/225 (2006.01); H04J 14/02 (2006.01); G02F 1/21 (2006.01);
U.S. Cl.
CPC ...
G02F 1/0123 (2013.01); G02F 1/225 (2013.01); H04B 10/25 (2013.01); H04B 10/54 (2013.01); G02F 2001/212 (2013.01); G02F 2201/58 (2013.01); H04J 14/02 (2013.01);
Abstract
An optical transmitter includes an optical modulator configured to modulate input light and output a light signal, a drive unit configured to output a modulation data signal to the optical modulator, and a bias controller configured to perform feedback control of bias voltage applied to the optical modulator. During a modulation OFF operation of the optical modulator, the bias controller switches a control target point from a first control target point to a second control target point and executes the feedback control.