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.:

US 7630651 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 08, 2009

Filed:

Feb. 21, 2006
Applicants:

Kazuyoshi Shimizu, Kawasaki, JP;

Akira Nagayama, Kawasaki, JP;

Inventors:

Kazuyoshi Shimizu, Kawasaki, JP;

Akira Nagayama, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B 10/04 (2006.01); G02F 1/01 (2006.01);
U.S. Cl.
CPC ...
Abstract

An optical transmitter includes: a modulating unit that modulates an optical signal based on an electric signal; a first detecting unit that detects a first variation width of a maximum output of the modulated optical signal; a second detecting unit that detects a second variation width of a minimum output of the modulated optical signal; a comparing unit that performs a comparison of the first variation width and the second variation width; and an adjusting unit that adjusts a bias potential of the electric signal based on a result of the comparison.


Find Patent Forward Citations

Shimizu, Kazuyoshi. (2009). Method and apparatus for controlling bias point of optical transmitter (U.S. Patent No. 7630651). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7630651

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