DISTRIBUTED ERBIUM-DOPED FIBER AMPLIFIERS WITH STIMULATED RAMAN-SCATTERING

Abstract

The effect of stimulated Raman scattering (SRS) on the distributed erbium-doped fiber amplifier with 1.48-mu-m pump wavelength and 1.55-mu-m signal wavelength is numerically studied. The contributions of the gains from SRS and the pumped erbium ions doped in the fiber core are shown. It is found that SRS enhances both the gain and signal-to-noise ratio of the amplifier except the signal-to-noise ratio may be decreased by SRS for high initial signal power.