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
Hao Wu (wuhaoboom@hust.edu.cn)
Ming Tang (tangming@mail.hust.edu.cn)
收稿日期:2024-08-26,
修回日期:2024-12-09,
录用日期:2024-12-17,
网络出版日期:2025-01-23,
纸质出版日期:2025-02-28
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Optical semantic communication through multimode fiber: from symbol transmission to sentiment analysis[J]. LSA, 2025,14(2):531-540.
Gao, Z. et al. Optical semantic communication through multimode fiber: from symbol transmission to sentiment analysis. Light: Science & Applications, 14, 531-540 (2025).
Optical semantic communication through multimode fiber: from symbol transmission to sentiment analysis[J]. LSA, 2025,14(2):531-540. DOI: 10.1038/s41377-024-01726-5.
Gao, Z. et al. Optical semantic communication through multimode fiber: from symbol transmission to sentiment analysis. Light: Science & Applications, 14, 531-540 (2025). DOI: 10.1038/s41377-024-01726-5.
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.
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