SUBMERGENCE DETECTION SENSOR USING OPTICAL FIBER GRATING

摘要

The present invention relates to an optical sensor, comprising: an optical fiber including a core part and a cladding part; A first optical fiber lattice portion formed at a predetermined portion of the core portion and reflecting light having a first wavelength; A condensation portion formed outside of the cladding portion including the predetermined portion where the first optical fiber lattice portion is formed; The condensation unit is condensed when the water touches, characterized in that for compressing the optical fiber.