Design and Performance Analysis of 4-Channel WDM Optical Fiber Communication System Using OptiSystem

This investigation successfully demonstrates a high-performance four-channel WDM optical transport architecture capable of delivering an aggregate throughput of 40 Gbps with excellent transmission fidelity. The coordinated integration of low-chirp modulation, dual-stage optical amplification, and sensitivity- enhanced APD detection significantly improves communication reliability while maintaining spectral efficiency.   Performance analysis confirms that optimized noise management, rather than excessive gain deployment, represents the dominant factor governing short-haul WDM system reliability. The proposed architecture establishes a scalable foundation for future ultra-high-capacity optical communication infrastructures and next-generation photonic networking environments.

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