Optical semantic communication through multimode fiber: from symbol transmission to sentiment analysis  

作　　者：Zheng Gao Ting Jiang Mingming Zhang Hao Wu Ming Tang 

机构地区：[1]Wuhan National Laboratory for Optoelectronics,Next Generation Internet Access National Engineering Laboratory,and Hubei Optics Valley Laboratory,School of Optical and Electronic Information,Huazhong University of Science and Technology,Wuhan 430074,China

出　　处：《Light(Science & Applications)》2025年第2期531-540,共10页光(科学与应用)(英文版)

基　　金：supported by the National Key Research and Development Program of China(2023YFB2906300);National Natural Science Foundation of China(61931010,62225110);JD project of Hubei province(2023BAA013).

摘　　要：We propose and validate a novel optical semantic transmission scheme using multimode fiber(MMF).By leveraging the frequency sensitivity of intermodal dispersion in MMFs,we achieve high-dimensional semantic encoding and decoding in the frequency domain.Our system maps symbols to 128 distinct frequencies spaced at 600 kHz intervals,demonstrating a seven-fold increase in capacity compared to conventional communication encoding.We further enhance spectral efficiency by implementing 4-level pulse amplitude modulation(PAM-4),achieving 9.12 bits/s/Hz without decoding errors.Additionally,we explore the application of this system for sentiment analysis using the IMDb movie review dataset.By encoding semantically similar symbols to adjacent frequencies,the system's noise tolerance is effectively improved,facilitating accurate sentiment analysis.This work highlights the potential of MMF-based semantic communication to enhance both capacity and robustness in optical communication systems,offering promising applications in bandwidth-constrained and noisy environments.

关 键 词：intermodal dispersion semantic transmission optical semantic transmission scheme optical communication enhance spectral efficiency multimode fiber 

分 类 号：TN929.1[电子电信—通信与信息系统]