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:
Jun. 02, 2009
Filed:
May. 21, 2008
Dawei Zheng, Alhambra, CA (US);
Dazeng Feng, Arcadia, CA (US);
Anthony Kewitsch, Santa Monica, CA (US);
George Rakuljic, Santa Monica, CA (US);
Dawei Zheng, Alhambra, CA (US);
Dazeng Feng, Arcadia, CA (US);
Anthony Kewitsch, Santa Monica, CA (US);
George Rakuljic, Santa Monica, CA (US);
Kotura, Inc., Monterey Park, CA (US);
Abstract
An optical device includes a phase modulator having a waveguide on a substrate. The phase modulator also includes an n-type region having a proximity to a p-type region that causes formation of a depletion region when a bias is not applied to the modulator. The depletion region is at least partially positioned in the light signal carrying region of the waveguide. The phase modulator is tuned by applying a reverse bias to the phase modulator. The reverse bias changes the size of the depletion region.