Strain sensor based on temperature compensation fiber gratings

The utility model discloses a strain sensor based on temperature compensation fiber gratings, and relates to the technical field of fiber sensors. The strain sensor comprises an armored optical cable, a fixing seat A, a fiber loose tube, an adhesive, a fixing seat B, a fiber gland B, a protection cover, and a fiber gland A. according to the temperature compensation fiber grating strain sensor, the fiber gratings are fixed in wide grooves of the fixing seat A and the fixing seat B, tail fibers at two ends are respectively fixed on the fixing seat A and the fixing seat B, strain of the fixing seat A and the fixing seat B along with a tested object is transferred to the fiber gratings, corresponding strain changes happen to the central wavelength of the grating, the fiber gratings are not influenced by temperature, and the strain can be truly and accurately measured.