Performance Evaluation of Hybrid Optical Amplifier for Wavelength Division Multiplexing Transmission

Abstract

To fulfill the need of higher bandwidth, enhanced number of users, enhanced speed of communication of today’s users, the concept of wavelength division multiplexing (WDM) and fiber optic are developed. In which the multiple input signals are combined together and transfers as a single input. It uses the concept of multiplexing and de-multiplexing. WDM system comprises of amplifiers that are used to enhance the performance of the optical fiber system. This study analyzes a hybrid configuration of Raman amplifier and erbium-doped fiber amplifier (EDFA) which proposed to obtain a better performance in term of gain, noise figure and flat gain. It is based on the optimum parameter configuration of Raman amplifier and EDFA. The simulation is done by using optisystem software. The hybrid amplifier consists of Raman amplifier with multi-pump power set up and pump power of EDFA with the pump wavelength of 980 nm is designed and simulated in order to obtain higher gain and lower noise figure. From the simulation of the hybrid configuration, the optimum output has been achieved. The hybrid configurations exhibit the average gain of 46.1dB and average noise figure of 3 dB. The flat gain obtained in wide bandwidth between 1530 nm to 1600 nm which include C-Band and L-Band frequency with the gain bandwidth of 70 nm.