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:
Jan. 10, 2012
Filed:
Sep. 04, 2009
Shirong Liao, Mira Loma, CA (US);
Dawei Zheng, Arcadia, CA (US);
Cheng-chih Kung, Pasadena, CA (US);
Mehdi Asghari, Pasadena, CA (US);
Shirong Liao, Mira Loma, CA (US);
Dawei Zheng, Arcadia, CA (US);
Cheng-Chih Kung, Pasadena, CA (US);
Mehdi Asghari, Pasadena, CA (US);
Kotusa, Inc., Monterey Park, CA (US);
Abstract
The device includes an optical waveguide on a base. The waveguide is configured to guide a light signal through a light-transmitting medium. A light sensor is also positioned on the base. The light sensor including a ridge extending from slab regions. The slab regions are positioned on opposing sides of the ridge. A light-absorbing medium is positioned to receive at least a portion of the light signal from the light-transmitting medium included in the waveguide. The light-absorbing medium is included in the ridge and also in the slab regions. The light-absorbing medium includes doped regions positioned such that an application of a reverse bias across the doped regions forms an electrical field in the light-absorbing medium included in the ridge.