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:
Jul. 01, 2008
Filed:
Jun. 07, 2005
Applicants:
Dazeng Feng, Arcadia, CA (US);
Dawei Zheng, Alhambra, CA (US);
Anthony Kewitsch, Santa Monica, CA (US);
George Rakuljic, Santa Monica, CA (US);
Inventors:
Dazeng Feng, Arcadia, CA (US);
Dawei Zheng, Alhambra, CA (US);
Anthony Kewitsch, Santa Monica, CA (US);
George Rakuljic, Santa Monica, CA (US);
Assignee:
Kotura, Inc., Monterey Park, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02F 1/035 (2006.01); G02B 6/26 (2006.01); G02B 6/42 (2006.01);
U.S. Cl.
CPC ...
Abstract
An optical device includes a phase modulator positioned along a branch waveguide of a mach-zehnder interferometer. The phase modulator includes an n-type region having a proximity to a p-type region that causes a depletion region to form when a bias is not applied to the modulator. The depletion region is at least partially positioned in a light signal carrying region of the waveguide.