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Real-time phase demodulation method for heterodyne Φ-OTDR using single-sideband spectrum interception and

Fei Liu, Zhi Wang, Guo Zhu

    Optics Express
    |December 19, 2025
    PubMed
    Summary

    A new phase demodulation scheme, single-sideband spectrum interception and rotated-vector-sum (SSB-SI-RVS), accelerates Rayleigh backscattering phase demodulation for real-time phase-sensitive optical time-domain reflectometry (Φ-OTDR) applications.

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