The present invention relates to an optical fiber component for Raman amplification
having a construction for effectively suppressing deterioration of the transmission
characteristic caused by amplification of scattered light components. The optical
fiber component for Raman amplification has an optical fiber for Raman amplification
and is inserted at a position where the effective deterioration amount of the optical
SN ratio produced by DRBS-XT (Double Rayleigh Back Scattering-Crosstalk) is 1 dB
or less at the signal output terminal of the optical fiber for Raman amplification.