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:
Mar. 26, 2019
Filed:
Apr. 05, 2018
Applicant:
Fujitsu Optical Components Limited, Kawasaki-shi, Kanagawa, JP;
Inventors:
Sukeyuki Iwata, Kawasaki, JP;
Toshiki Tanaka, Setagaya, JP;
Masato Nishihara, Kawasaki, JP;
Naoki Kuwata, Yokohama, JP;
Assignee:
FUJITSU OPTICAL COMPONENTS LIMITED, Kawasaki-Shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/04 (2006.01); H04B 10/588 (2013.01); H04B 10/61 (2013.01); H04B 10/54 (2013.01);
U.S. Cl.
CPC ...
H04B 10/588 (2013.01); H04B 10/541 (2013.01); H04B 10/61 (2013.01);
Abstract
An optical transmitter includes an optical modulator configured to modulate light from a light source; and a processor configured to generate a drive signal that is input into the optical modulator. The processor inserts a bias control signal amplitude-modulated at a low frequency, into an analog signal at fixed intervals, to generate the drive signal.