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:
Sep. 15, 2009
Filed:
Oct. 11, 2007
Ya-hong Xie, Beverly Hills, CA (US);
Bin Shi, Hong Kong Island, HK;
Ya-Hong Xie, Beverly Hills, CA (US);
Bin Shi, Hong Kong Island, HK;
Abstract
A modulator for an optical transceiver is disclosed. The modulator has two quarter-wave stack mirrors composed of alternating dielectric layers with an optically absorbing layer sandwiched in between to form the vertical resonant cavity. The optically absorbing layer is made of semiconductor nanocrystals embedded in a dialectic material. The device is configured to operate near the saturation point of the absorption layer. By adjusting the biasing voltage across the absorption layer, the saturation threshold of the semiconductor nanocrystals is altered, resulting in the overall reflectivity of the resonant cavity to vary. The modulator is configured to be fabricated as the extension of the backend process of Si CMOS.