Performance Analysis of Fiber-Optic DWDM System

Abstract

Lightwave system using wavelength division multiplexing (WDM) meets the demand over larger data rates, higher capacity, and improved network throughput. In this paper, we discuss the multi-channel WDM system’s performance using a single-stage erbium-doped fiber amplifier (EDFA) and compares BER, Q-factor, and eye height for both co-channel and counter-channel propagation. The proposed WDM system identifies the optimal EDFA length, pump power, and input power to achieve a high Q-factor, proper eye-opening characteristic, and low bit error rate (BER). The proposed WDM system is simulated using OptiSystem, and results are compared for 16, 32, and 64-channel WDM systems. The proposed system's performance is evaluated by achieving low BER, high Q-factor, and higher gain with excellent eye characteristics, which enhance the signal quality at the receiver end. In this work, a 64-channel WDM system achieves min BER in the range of 10–15–10–19 in co-channel propagation and 10–16 from counter-channel propagation. Furthermore, the proposed system achieves a low noise figure (NF) around < 9 dB and flatten gain of 39.77 ± 0.7 dB from 1530 to 1562 nm operating bandwidth for 16, 32 and 64-channel WDM system using single-stage EDFA.