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. 27, 2004
Filed:
Mar. 15, 2002
Benjamin J. Eggleton, Summit, NJ (US);
Paul Steinvurzel, Jersey City, NJ (US);
Yoshihiro Emori, Chiyoda-Ku, JP;
Shu Namiki, Chiyoda-Ku, JP;
Akira Fujisaki, Chiyoda-Ku, JP;
Toshio Kimura, Chiyoda-Ku, JP;
Fitel USA Corp., Norcross, GA (US);
Abstract
A tunable multimode wavelength division multiplex Raman pump and amplifier, and a system, method, and computer program product for controlling a tunable Raman pump and amplifier. The tunability of the pump source is accomplished by either straining or heating an external fiber grating, thereby causing a different wavelength of light to be emitted by the pump source. The system includes a microprocessor-based controller that monitors an amplifier's performance and adjusts the drive current and/or wavelength of the tunable pumps of an amplifier to achieve a target performance.