Analysis of Noise Figure of Fiber Raman Amplifier

Raman amplification is based on stimulated raman scattering (SRS). Raman amplifiers are widely used for high capacity communication systems. The main reason for which it can be used is its excellent noise figure. The source of noise and its effects on the noise figure is discussed and the methods to reduce the noise figure are given. In this paper noise figure of Raman amplifiers is studied and analyzed for different pumping schemes.