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. 17, 2004
Filed:
Sep. 28, 2001
Applicant:
Inventor:
Kevin Malone, Boulder, CO (US);
Assignee:
Optical Communication Products, Inc., Woodland Hills, CA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/08 ; H01S 5/00 ;
U.S. Cl.
CPC ...
H01S 3/08 ; H01S 5/00 ;
Abstract
A method and apparatus for monitoring the optical power output of a VCSEL uses refracted ray coupling to direct rays refracted out of an optical transmission medium, towards a photodetector. The photodetector is coupled to feedback circuitry and laser control circuitry capable of adjusting the VCSEL based on the monitored power output. A portion of the rays that enter the optical fiber are refracted out of the optical fiber by means of high-index materials and directed toward the photodetector by reflective surfaces situated around the coupling region in which the VCSEL is coupled to the optical fiber.