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    This study introduces a secure optical communication method using chaos-driven data and identity integration. It enhances security against interception by embedding device information into chaotic encryption, achieving high data rates.

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    Area of Science:

    • Optoelectronics and Communications
    • Information Security
    • Applied Physics

    Background:

    • Physical-layer interception poses a significant threat to optical communication security.
    • Existing encryption methods can be vulnerable to sophisticated attacks.
    • Integrating data and identity information is crucial for robust security.

    Purpose of the Study:

    • To propose a novel chaos-driven data-identity integrated transmission scheme.
    • To enhance the security of optical communication against physical-layer interception.
    • To achieve high-speed and secure data transmission.

    Main Methods:

    • Embedding hardware device information and key initial values into unique identity labels.
    • Utilizing identity labels to drive a chaotic model for generating encryption sequences.
    • Superimposing identity labels and ciphertext in the power domain for integrated digital processing.
    • Experimental validation in an intensity modulation/direct detection (IM/DD) system over 2 km of seven-core optical fiber.

    Main Results:

    • Achieved an integrated transmission rate of 110.74 Gb/s.
    • Demonstrated successful data recovery by legitimate users using identity labels.
    • Unauthorized receivers could not extract keys or decipher the encryption, with a bit error rate (BER) around 0.5.
    • Validated the scheme's effectiveness in preventing physical-layer interception.

    Conclusions:

    • The chaos-driven data-identity integrated transmission scheme significantly enhances optical communication security.
    • The method effectively prevents unauthorized interception and decryption.
    • The scheme offers a practical solution for secure high-speed optical data transmission.