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:
Dec. 11, 2007
Filed:
Jul. 31, 2002
Tetsufumi Tsuzaki, Yokohama, JP;
Motoki Kakui, Yokohama, JP;
Takafumi Terahara, Kawasaki, JP;
Junichi Kumasako, Kawasaki, JP;
Tetsufumi Tsuzaki, Yokohama, JP;
Motoki Kakui, Yokohama, JP;
Takafumi Terahara, Kawasaki, JP;
Junichi Kumasako, Kawasaki, JP;
Sumitomo Electric Industries, Ltd., Osaka, JP;
Fujitu Limited, Kanagawa, JP;
Abstract
The present invention relates to a Raman amplifier where flexibility in device design considering both of Raman amplification and dispersion compensation is high. In the Raman amplifier, the Raman amplification optical fiber included in the optical amplification section and the dispersion compensating optical fiber included in the dispersion compensation section are arranged while being optically connected to each other. Since the optical amplification section and the dispersion compensation section are provided as independent optical devices, one device can be designed without being restricted to the design conditions of the other device.