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. 28, 2007
Filed:
Aug. 29, 2005
Method and apparatus for controlling multiple-wavelength-pumped raman amplifier and computer product
Koji Fujimura, Tokyo, JP;
Misao Sakano, Tokyo, JP;
Takeshi Nakajima, Tokyo, JP;
Shu Namiki, Tokyo, JP;
Koji Fujimura, Tokyo, JP;
Misao Sakano, Tokyo, JP;
Takeshi Nakajima, Tokyo, JP;
Shu Namiki, Tokyo, JP;
The Furukawa Electric Co., Ltd., Tokyo, JP;
Abstract
A multiple-wavelength-pumped Raman amplifier includes a control unit that controls, based on a relational expression associating an amount of fluctuation in a current signal light power at a signal input end, an amount of fluctuation in a current pumping light power at a pumping light input end, an amount of fluctuation in the current signal power at a signal output end, and an amount of fluctuation in the current pumping light power at a pumping light output end, two fluctuation amounts by determining other two fluctuation amounts in advance, to determine pumping light powers satisfying the relational expression.