Theoretical analysis of a double stages Erbium-Doped Fiber Amplifier

A model of an Erbium Doped Fiber Amplifier (EDFA) configured in Dual Stages (DS) scheme with Tunable Band Pass (TBF) is presented. A circulator is used to reflect the amplified signal back to the Erbium-doped fiber and which is incorporated with Tunable band pass filter (TBF) which filter-out Amplified Spontaneous emission in order to ensure efficient amplification of the signal as it propagates along the fiber. Laser diodes operating at 1480 nm with 10 mW and 220 mW are using to pump the double stages. In addition, design parameters of EDFA are optimized using the numerical simulation of EDFA rate equation model in order to optimize the performance of the EDFA. Thus, the proposed amplifier configuration is able to maintain gain of higher than 64 dB for small signals less than -45 dBm using wavelength 1550 nm. Design and analysis of the performance of the EDF and enhancement the optical fiber communication system performance can be achieved by using developed model.