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:
May. 15, 2018
Filed:
Aug. 11, 2004
Fred A. Kish, Jr., Palo Alto, CA (US);
Charles H. Joyner, Sunnyvale, CA (US);
David F. Welch, Menlo Park, CA (US);
Fred A. Kish, Jr., Palo Alto, CA (US);
Charles H. Joyner, Sunnyvale, CA (US);
David F. Welch, Menlo Park, CA (US);
Infinera Corporation, Sunnyvale, CA (US);
Abstract
A laser source or a plurality of laser sources in a photonic integrated circuit (PIC) are provided with an electrical contact that is either segmented or is connected to a series of vernier resistor segments for supply of current to operate the laser source. In either case, at least one segment of the laser contact or at least one vernier resistor segment can be trimmed in order to vary the amount of current supplied to the laser source resulting in a change to its current density and, thus, a change in its operational wavelength while maintaining the current supplied to the laser source constant.