SUBMERGENCE DETECTION SENSOR USING OPTICAL FIBER GRATING

摘要

The present invention relates to a flooding detection sensor using an optical fiber grating, which comprises an optical fiber grating device for detecting a flooding or leakage and changing a wavelength of an output signal, and a coating layer formed on the outer periphery of the optical fiber grating device, The optical fiber lattice element is shrunk and cured by a heat treatment process and then is restored by immersion and accurately detects the immersion or leakage by using the wavelength change amount of the output signal output from the optical fiber grating device Can be obtained.