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.:

US 6980745 B1

PDF
Full Text
Expired
Date of Patent:
Dec. 27, 2005

Filed:

Dec. 14, 2001
Applicants:

Hiroyuki Deguchi, Kawasaki, JP;

Shin-ichirou Harasawa, Kawasaki, JP;

Izumi Yokota, Kawasaki, JP;

Inventors:

Hiroyuki Deguchi, Kawasaki, JP;

Shin-ichirou Harasawa, Kawasaki, JP;

Izumi Yokota, Kawasaki, JP;

Assignee:

Fujitsu Limited, Kawasaki, JP;

Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04B010/16 ;
U.S. Cl.
CPC ...
Abstract

An optical transmission system ensuring high-quality monitor control even if an optical fiber fault occurs. A monitor instruction sending unit sends a monitor instruction. An operating condition recognizing unit receives a response signal and recognizes the operating condition. A filtering unit filters the monitor instruction and the response signal. A monitor control unit monitors the operating condition of its own repeater in response to the monitor instruction, and generates resultant response information. A pump unit generates a pump light to cause Raman amplification within an optical fiber transmission medium. A regeneration control unit performs a regeneration control of the response signal to thereby create a regenerated signal. A modulation control unit modulates the pump light by the response information or the regenerated signal to thereby generate the response signal.


Find Patent Forward Citations

Deguchi, Hiroyuki. (2005). Optical transmission system (U.S. Patent No. 6980745). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6980745

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