Design and analysis of broadband WDM system for 5G and beyond

Abstract

Demand for large bandwidth is increasing day by day due to the extensive usage of the internet, various gaming applications, and mobile communication. Optical fibers fulfill this requirement because it has enormous bandwidth. In the present article, we have designed a wideband WDM system, which operates in E, S, C, and L bands, over a bandwidth of 29.509 THz (or 273 nm). In the proposed wideband WDM system, the four channels operated at 1427 nm (E band), 1520 nm (S-band), 1550 nm(C band), and 1600 nm (L band). The data rate used was 40 Gbps. The system is analyzed by varying the fiber length from 25 km to 125 km and laser power from −5 dBm to 10 dBm. The system's performance is evaluated by BER, quality factor, output optical power, and eye diagram. We successfully demonstrated that at −5 dBm/100km, the quality factor and BER as 9.39, 9.16, 10.20, 6.76 and 2.80 ×10−21, 2.32×10−20, 9.45×10−25, 6.55×10−12. Similarly, at 10 dBm/125km the Q factor and bit error rate was 5.13, 24.32, 16.18, 7.64 and 1.36×10−07, 5.39×10−131, 2.99×10−59, 1.05×10−14 for 10 dBm for the four channels respectively. The proposed wideband WDM system was designed and simulated using optisystem 13.