Channel modeling of P2MP coherent PON system based on diffusion model

    Recently, Professor Yi Lilin's research group from the Department of Electronic Engineering at Shanghai Jiao Tong University (LIFE, Laboratory of Intelligent Fiber Ecosystem) studied point to multipoint (P2MP) coherent passive optical network (PON) systems and successfully applied the diffusion model to optical communication channel modeling for the first time. The effectiveness and practicality of the model were verified, and the accuracy and generalization ability of the model in P2MP coherent PON system channel modeling were deeply explored. The signal-to-noise ratio modeling error was less than 0.1dB in the range of 8dBm to 14dBm transmission power. The related results were published in the international optical journal Optics Letters in May 2025 under the title "P2MP coherent PON system modeling based on diffusion model". PhD students Guan Xiaokai and Xu Yongxin are co first authors, and Professor Yi Lilin is the corresponding author.