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OPGW power overhead fiber optic cable suffers from fiber core aging, ice-covering dance and stress damage in long-term operation due to laying method and geographical environment. The monitoring of multi-fiber parameters such as vibration, strain, temperature and attenuation based on distributed fiber optic sensing can realize early warning of malfunction. In order to solve the problems of multiple deployment devices, occupying multiple core resources and high operation and maintenance costs of existing multiparameter measurement technologies, the fusion sensing technology based on ΦOTDR, BOTDR and OTDR is studied. The system employs multiplexing of light sources, two-way coherent reception of Brillouin scattered light and Rayleigh scattered light, and joint demodulation of phase and intensity to achieve distributed measurements of vibration, temperature, strain and long-range attenuation …