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:
Aug. 29, 2006
Filed:
Feb. 03, 2003
Achintya K. Bhowmik, San Jose, CA (US);
Nagesh K. Vodrahalli, Los Altos, CA (US);
Gennady Farber, Los Altos, CA (US);
Hai-feng Liu, Cupertino, CA (US);
Hamid Eslampour, San Jose, CA (US);
UT Tran, San Jose, CA (US);
William B. Wong, Saratoga, CA (US);
Ruolin LI, Santa Clara, CA (US);
Jesper Jayaswal-arentoff, Palo Alto, CA (US);
Achintya K. Bhowmik, San Jose, CA (US);
Nagesh K. Vodrahalli, Los Altos, CA (US);
Gennady Farber, Los Altos, CA (US);
Hai-Feng Liu, Cupertino, CA (US);
Hamid Eslampour, San Jose, CA (US);
Ut Tran, San Jose, CA (US);
William B. Wong, Saratoga, CA (US);
Ruolin Li, Santa Clara, CA (US);
Jesper Jayaswal-Arentoff, Palo Alto, CA (US);
Intel Corporation, Santa Clara, CA (US);
Abstract
An optical transmitter includes an external cavity laser array formed in a PLC, a trench-based detector array and an AWG. The external cavity laser is formed using an array of substantially similar laser gain blocks and an array of gratings formed in waveguides connected to the gain blocks. Each grating defines the output wavelength for its corresponding external cavity laser. Each detector of the detector array includes a coupler to cause a portion of a corresponding laser output signal of the laser array to propagate through a first sidewall of a trench and reflect off a second sidewall of the trench to a photodetector. In one embodiment, the photodetector outputs a signal indicative of the power level of the reflected signal, which a controller uses to control the laser array to equalize the power of the laser output signals.