Calculation of Gain and Noise Figure of EDFA at (C) band in optical communication

We have studied the influence of Erbium Doped Fiber Amplifier length on gain and noise figure values in (c) band of optical communication network. This influence had been studied using computer simulation in solving integral equations and finding numerical solution for rate and propagation equations. The study has revealed that, using of wavelength (1480 nm) in process, the optical fiber should not be less than (9m) to get a highain (60dB) and low noise figure (-13dB).