Author(s): Gurpreet Singh

Abstract: In the 21st century, the emergence of advanced internet multimedia applications has significantly increased bandwidth demands at the access network level. Wavelength Division Multiplexed Passive Optical Networks (WDM-PONs) have emerged as a promising solution to meet these demands. Unlike traditional PON systems that utilize unidirectional traffic per fiber, implementing bidirectional fibers at the access level can reduce network costs and promote environmentally friendly ("green") systems. However, the efficiency of bidirectional fibers is challenged by nonlinear effects, such as Four-Wave Mixing (FWM), especially under fixed bandwidth constraints. This paper presents a comprehensive performance analysis of an 8 × 10 Gbps bidirectional green WDM-PON system, considering both linear and nonlinear effects. The study reveals that for a fixed transmission distance of 30 km, the input channel power should not exceed 18 dBm, as higher power levels lead to significant performance degradation due to FWM. Additionally, for a fixed channel power of 0 dBm, the maximum achievable transmission distances are 50 km for the uplink and 43 km for the downlink, ensuring acceptable system performance. These findings provide valuable insights for optimizing bidirectional WDM-PON systems to balance performance, cost, and environmental considerations.

DOI: 10.33545/2707661X.2025.v6.i2a.135

Pages: 09-14 | Views: 107 | Downloads: 34

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