[10] Masoudi A, Pilgrim J A, Newson T P et al. Subsea cable condition monitoring with distributed optical fiber vibration sensor[J]. Journal of Lightwave Technology, 4, 37(2019).

[11] Williams E F, Fernández-Ruiz María R, Magalhaes R et al. Distributed sensing of microseisms and teleseisms with submarine dark fibers[J]. Nature Communications（S2041-1723）, 10, 5778(2019).

[12] Lindsey N J, Dawe T C, Ajo-Franklin J B. Illuminating seafloor faults and ocean dynamics with dark fiber distributed acoustic sensing[J]. Science, 366, 1103-1107(2019).

[13] Chen X, Zou N, Liang L et al. A submarine cable monitoring system based on enhanced cotdr with simultaneous loss measurement and vibration monitoring ability[J]. Optics Express, 29, 13115-13128(2021).

[15] Ying S, Yang Y, Chen W et al. Optical fiber distributed acoustic sensing based on the self-interference of Rayleigh backscattering[J]. Measurement, 79, 222-227(2016).

[16] Chen X, Zou N, Wan Y et al. On-line status monitoring and surrounding environment perception of an underwater cable based on the phase-locked Φ-OTDR sensing system[J]. Optics Express, 30, 30312-30330(2022).