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:
Feb. 02, 2010
Filed:
Jun. 01, 2005
Jianxiao Chen, La Jolla, CA (US);
Paul Kit Lai Yu, San Diego, CA (US);
Tetsuya Kawanishi, Tokyo, JP;
Kaoru Higuma, Chiba, JP;
Jianxiao Chen, La Jolla, CA (US);
Paul Kit Lai Yu, San Diego, CA (US);
Tetsuya Kawanishi, Tokyo, JP;
Kaoru Higuma, Chiba, JP;
The Regents of the University of California, Oakland, CA (US);
National Institute of Information and Communication, Tokyo, JP;
Sumitomo Osaka Cement Co., Ltd., Tokyo, JP;
Abstract
The invention provides tunable delay or resonator devices in an electro optical substrate. Signals in at least one waveguide in the electro optical substrate pass through Y-junction reflectors which direct signals from one branch of the waveguide back into another branch of the waveguide. A coupled delay or resonator approximated loop is presented in an embodiment of the invention with opposing Y-junction reflectors. In other embodiments of the invention, a delay ladder is provided with selectable levels of delay from multiple outputs.