07180654 is referenced by 4 patents and cites 12 patents.

Multi-wavelength light, including a plurality of segments of light signal with a different wavelength each, is inputted into a Raman amplification fiber. Pumping light generated by a pumping light source is supplied to the Raman amplification fiber in the opposite direction of the transmission direction of the multi-wavelength light. An auxiliary light source generates auxiliary light. An auxiliary light control circuit adjusts the optical power of the auxiliary light with a prescribed response time, based on the change in input power of the multi-wavelength light. The auxiliary light is supplied to the Raman amplification fiber in the same direction as the transmission direction of the multi-wavelength light.

Title
Raman amplifier
Application Number
10/622580
Publication Number
7180654 (B2)
Application Date
July 21, 2003
Publication Date
February 20, 2007
Inventor
Etsuko Hayashi
Kawasaki
JP
Shinichirou Muro
Kawasaki
JP
Yasushi Sugaya
Kawasaki
JP
Agent
Staas & Halsey
Assignee
Fujitsu
JP
IPC
H01S 3/00
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