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:
May. 11, 2010
Filed:
Aug. 05, 2005
Applicants:
Ping-chiek Koh, Goleta, CA (US);
Michael C. Larson, Santa Barbara, CA (US);
Inventors:
Ping-Chiek Koh, Goleta, CA (US);
Michael C. Larson, Santa Barbara, CA (US);
Assignee:
JDS Uniphase Corporation, Milpitas, CA (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B 10/04 (2006.01); H04B 10/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A bias-control circuit that provides operating point control for a Mach-Zehnder modulator experiencing optical absorption at their interferometric arms. The bias control circuit generates compensation signals that are used to counter the thermally induced index shifts as a result of absorption. In addition, an operating point with desirable transmitter characteristics can also be arbitrarily chosen by over-compensating or under-compensating thermal effects.