Raman amplifier and pumping apparatus, and program

  • US 20030067669A1
  • Filed: 09/30/2002
  • Published: 04/10/2003
  • Est. Priority Date: 10/09/2001
  • Status: Active Grant
First Claim
Patent Images

1. A Raman amplifier comprising;

  • a Raman amplification medium which provides signal lights with gain through the stimulated Raman effect;

    a pumping means for injecting pumping lights of a plurality of wavelengths in this Raman amplification medium; and

    a means for allocating wavelengths of said pumping lights so that in respect of two arbitral pumping lights among the pumping lights of a plurality of wavelengths generated by said pumping means, the peak wavelength λ

    min, of pumping light having the shorter wavelength and the peak wavelength λ

    max, of pumping light having the longer wavelength are in a relationship to the shortest wavelength of the wavelength band of said signal light, λ

    short and the longest wavelength of the wavelength band of said signal light, λ

    long, expressed asλ

    short>

    λ

    min×

    λ

    max/(2λ

    min−

    λ

    max)orλ

    min×

    λ

    max/(2λ

    min−

    λ

    max)>

    λ

    long.

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