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:
Mar. 27, 2007
Filed:
Aug. 23, 2005
Zhaoyang HU, Santa Barbara, CA (US);
Kohsuke Nishimura, Kamifukuoka, JP;
Hsu-feng Chou, Santa Barbara, CA (US);
Daniel J. Blumenthal, Santa Barbara, CA (US);
John E. Bowers, Santa Barbara, CA (US);
Ryo Inohara, Kamifukuoka, JP;
Masashi Usami, Kamifukuoka, JP;
Zhaoyang Hu, Santa Barbara, CA (US);
Kohsuke Nishimura, Kamifukuoka, JP;
Hsu-Feng Chou, Santa Barbara, CA (US);
Daniel J. Blumenthal, Santa Barbara, CA (US);
John E. Bowers, Santa Barbara, CA (US);
Ryo Inohara, Kamifukuoka, JP;
Masashi Usami, Kamifukuoka, JP;
KDDI R&D Laboratories, Inc., Kamifukuoka, JP;
The Regents of the University of California, Oakland, CA (US);
Abstract
An apparatus for simultaneous OTDM demultiplexing, electrical clock recovery and optical clock generation, and optical clock recovery using a traveling-wave electroabsorption modulator. The apparatus includes a TW-EAM and a PLL coupled thereto. The TW-EAM includes a first, a second, a third, and a fourth. The first port is used for an optical input and the third port is used for optical output. The second port is coupled to an input, and the fourth port is coupled to an output, of the PLL. When the first port receives optical input, the second port produces a photocurrent to be applied to the PLL, and the fourth port receives a recovered clock produced by the PLL, and the third port produces demultiplexed data and an optical clock. Using the same configuration, the apparatus produces a recovered optical clock signal.