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Optical transmission system

  • US 20040246566A1
  • Filed: 03/04/2004
  • Published: 12/09/2004
  • Est. Priority Date: 03/04/2003
  • Status: Abandoned Application
First Claim
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1. An optical transmission system comprising:

  • a signal light source outputting signal light with a positive chirp;

    an optical fiber transmission line through which the signal light propagates; and

    a lumped Raman amplifier provided between said signal light source and said optical fiber transmission line, and Raman-amplifying the signal light outputted from said signal light source, said lumped Raman amplifier including a high-nonlinearity fiber having a negative chromatic dispersion at a wavelength of the signal light and a nonlinear coefficient (2 π





    (n2/Aeff) of 6.9 (1/W/km) or more which is defined by a nonlinear refractive index n2 and an effective area Aeff at a wavelength of λ

    .

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