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:
Apr. 20, 2004
Filed:
Dec. 13, 2001
Pajo Vujkovic-Cvijin, Mountain View, CA (US);
SRI International, Menlo Park, CA (US);
Abstract
An optical light source for use in wavelength division multiplexed and dense wavelength division multiplexed systems may include a reference gas contained by a hermetically sealed enclosure which also protects a plurality of light generating structures. A frequency grid generator, typically in the form of an optical etalon, can be frequency referenced to an absolute reference point provided by the reference gas. An electronic feedback control system acts upon injection current to keep the laser frequency coincident with that of the referencing structure. An active, feedback based, thermal management systems provides control of the laser frequency ranges and etalon operating point. Electronic control over a number of separate lasers (and the grid) may be effected using a multiplexed digital controller.