Design and Performance Analysis of 32-Channels WDM-RoF System

Abstract

The growing demand for high-speed, long-distance communication has been growing exponentially. This growth is fueled by the increasing need for faster data transfer rates and enhanced network capabilities to support modern applications such as 5G, IoT, and high-definition streaming services. As a result, the use of Wavelength Division Multiplexing (WDM) in Fiber Optic (FO) offers several benefits, including increased capacity, higher bit rates. Radio over Fiber (RoF) systems are particularly promising for 5G networks due to their ability to deliver the necessary bandwidth for broadband data transmission to end-users. The received RoF signal degradation over long distances leads to high Bit Error Rates (BER) and low Q-factor values, affecting network performance. To address these problems, we proposed a 32-channel WDM-based RoF system using Optical Phase Conjugator (OPC) and Fiber Bragg Grating (FBG) for dispersion compensation. The system is evaluated in Optisystem 19.0 tool over transmission distances of 60 km, 120 km, 180 km and 240 km, with channel spacings of 0.5 nm. Optimal results were achieved at 0 dBm CW laser power, maintaining a Q-factor above 6 and BER below 10⁻⁹. The results demonstrate an efficient high-performance system capable of achieving 320 Gbps data transmission.