OTDR is usually used to locating the fault point in power communication optical cable fault

however

OTDR can neither intervene the risk factors in advance

nor locate the fault point quickly after the optical cable is damaged. This paper presents a new type of optical fiber application based on Φ-OTDR technology. The important channel optical cables are all included into the monitoring scope in the city

and the Rayleigh scattering principle is used to capture the phase change of the fiber when it is disturbed

which can greatly shorten the time of fault location of the fiber

streamline the cable fault emergency disposal process and improve the efficiency of emergency disposal.