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:
Sep. 23, 2003
Filed:
Apr. 18, 2001
William S. Wong, San Jose, CA (US);
Chien-Jen Chen, Cupertino, CA (US);
G. Victor Treyz, San Carlos, CA (US);
Onetta, Inc., Sunnyvale, CA (US);
Abstract
Raman amplifier equipment for fiber-optic communications links is provided. Raman pump light at a first wavelength or wavelengths may be used to optically pump fiber in a communications link to produce Raman gain. Raman pump light at a second wavelength or wavelengths may be used to optically pump the fiber to produce Raman gain for channels at different wavelengths in the communications link. The Raman gain produced by the pump light at the first wavelength or wavelengths increases the reach of the Raman pump light at the second wavelength or wavelengths into the fiber to improve the noise figure of the amplifier.