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Related Experiment Video

Updated: Jan 11, 2026

Quasi-light Storage for Optical Data Packets
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Physical layer encryption scheme based on biological genetic variation mechanisms in CO-OFDM system.

Xinge Liu, Xianfeng Tang, Zeyu Xu

    Optics Express
    |November 11, 2025
    PubMed
    Summary

    This study introduces a novel method for securing optical data transmission by combining biological genetic variation mechanisms with signal encryption in coherent optical orthogonal frequency division multiplexing systems. This approach enhances physical layer security against advanced cyber threats.

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    Area of Science:

    • Optical communications
    • Cybersecurity
    • Biotechnology

    Background:

    • Traditional cryptography is insufficient for securing optical physical layer data transmission against quantum computing and advanced cyber-attacks.
    • There is a need for novel security methods in high-speed optical communication systems.

    Purpose of the Study:

    • To propose and demonstrate a novel physical layer security scheme for coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems.
    • To integrate biological genetic variation mechanisms (BGVM) with signal encryption for enhanced data security.

    Main Methods:

    • A mapping model was developed between genetic structures and CO-OFDM signals.
    • A dual encryption mechanism, including mutation-guiding encryption (MGEN) and reorganization-guiding encryption (RGEN), was implemented.
    • Key sequences were generated using a four-dimensional hyperchaotic system for enhanced randomness and unpredictability.

    Main Results:

    • The proposed scheme successfully achieved physical layer secure transmission of CO-OFDM signals over 80 km of standard single-mode fiber (SSMF).
    • The system demonstrated low time complexity.
    • The key space was extended to approximately 10^1194 with 256 subcarriers.

    Conclusions:

    • The integration of BGVM with CO-OFDM signal encryption offers a promising solution for physical layer security in optical networks.
    • The proposed dual encryption mechanism provides robust security with a significantly large key space.
    • This novel approach addresses the security challenges posed by emerging threats in optical data transmission.