Optical Module MPI
Multiple reflections from fiber connectors, transmitter and receiver interfaces create multipath interference (MPI) in fiber optic links. MPI converts phase noise to relative intensity noise (RIN) and imposed a severe limit on high-speed PAMn transmission with direct detection. Computed by taking the Fourier transform of the autocorrelation of the time-domain noise term. Multipath interference (MPI) plays a major role in optical communication links, especially in FTTx PON architecture where splitter-based distribution causes reflections from each splitter. Isolators can help mitigate this problem but they are not very suitable for passive networks due to their. Optical Multi-Path Interference Noise Mitigation for 56 Gb/s PAM4 IMDD Transmission System Chuanming Huang, Haiping Song, Mengfan Cheng, Qi Yang, Ming Tang, Deming Liu, and Lei Deng C. A transmitter model for PAM-8 modulation with equal OMA symbols, A BERT model for PAM-8 based on Gaussian distributed histogram and 2 types of MPI emulator models, are introduced to calculate a PAM-8 transmission performance.
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