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:
Jul. 18, 2006
Filed:
Oct. 08, 2002
Fred A. Kish, Jr., Palo Alto, CA (US);
Charles H. Joyner, Sunnyvale, CA (US);
David F. Welch, Menlo Park, CA (US);
Jonas Webjorn, Redwood City, CA (US);
Robert B. Taylor, Windsor Mill, MD (US);
Alan C. Nilsson, Mountain View, CA (US);
Fred A. Kish, Jr., Palo Alto, CA (US);
Charles H. Joyner, Sunnyvale, CA (US);
David F. Welch, Menlo Park, CA (US);
Jonas Webjorn, Redwood City, CA (US);
Robert B. Taylor, Windsor Mill, MD (US);
Alan C. Nilsson, Mountain View, CA (US);
Infinera Corporation, Sunnyvale, CA (US);
Abstract
A monolithic transmitter photonic integrated circuit (TxPIC) chip comprises an array of modulated sources formed on the PIC chip and having different operating wavelengths according to a standardized wavelength grid and providing signal outputs of different wavelengths. Pluralities of wavelength tuning elements are integrated on the chip, one associated with each of the modulated sources. An optical combiner is formed on the PIC chip and the signal outputs of the modulated sources are optically coupled to one or more inputs of the optical combiner and provided as a combined channel signal output from the combiner. The wavelength tuning elements provide for tuning the operating wavelength of the respective modulated sources to be approximate or to be chirped to the standardized wavelength grid. The wavelength tuning elements are temperature changing elements, current and voltage changing elements or bandgap changing elements.