Author(s): Mezher H Mezher and Tabarek Mazen Makki

Abstract: By using OPFs to transmit data in the form of light, fiber-optic communication has completely changed the way in-formation is transmitted. This technology's remarkable benefits, such as much lower attenuation, increased band-width capacity, and decreased crosstalk over extended distances, make it superior to conventional electrical trans-mission techniques. The deployment of Wavelength Division Multiplexing (WDM), which maximizes bandwidth usage by enabling several data channels to be carried simultaneously at various wavelengths, is one of the rapid breakthroughs in optical fiber (OPF) technology that are examined in this research. However, nonlinear event in-volved Self-Phase Modulation (S.P.M.), Four-Wave Mixing (FWM), and Stimulated Raman Scattering (S.R.S.) that are inherent in fiber optics frequently impair the performance of WDM systems. Signal distortion and energy loss may result from these causes. The study examines many digital modulation methods, such as Differential Phase Shift Keying (DPSK), Return-to-Zero (RZ), and Non-Return-to-Zero (NRZ), and evaluates how they affect system performance and efficiency at high bit-rates. The results point to a future path for optical communication system research and development, showing that DPSK provides improved sensitivity and lower bit error rates, while RZ modulation exhibits higher resilience to nonlinear effects.

DOI: 10.33545/26633582.2025.v7.i2a.194

Pages: 18-25 | Views: 385 | Downloads: 226

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