Chaotic on-off keying for secure communications

A. Uchida, S. Yoshimori, M. Shinozuka, T. Ogawa, F. Kannari

    Research output: Contribution to journalArticle

    38 Citations (Scopus)

    Abstract

    We experimentally demonstrate a chaotic on-off keying method for secure communications by using chaos synchronization in two microchip lasers. The output of the microchip laser in the transmitter is externally modulated with an acousto-optic modulator at ∼4 MHz. One encodes a digital message in the chaotic carrier by turning the modulation on and off at 100 kHz. Because the accuracy of synchronization for the slave laser in the receiver tends to be degraded in the presence of external modulation in the injection laser signal, one can distinguish two binary states. The digital message can be recovered as an envelope of the chaotic oscillation when the difference between the two laser outputs of the transmitter and the receiver is calculated.

    Original languageEnglish
    Pages (from-to)866-868
    Number of pages3
    JournalOptics Letters
    Volume26
    Issue number12
    DOIs
    Publication statusPublished - 2001 Jun 15

    ASJC Scopus subject areas

    • Atomic and Molecular Physics, and Optics

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  • Cite this

    Uchida, A., Yoshimori, S., Shinozuka, M., Ogawa, T., & Kannari, F. (2001). Chaotic on-off keying for secure communications. Optics Letters, 26(12), 866-868. https://doi.org/10.1364/OL.26.000866