The FBG-D02 Displacement Sensor is a temperature compensated displacement sensor with dual fiber gratings and dual fiber connectors.It has the function of simultaneously precise measurement of displacement and temperature to solve the cross-sensitive problem of displacement and temperature during actual measurement. The design of dual fiber connector is convenient for the series networking of multiple fiber Bragg grating sensors.It can be used to respectively monitor tensile and compressive displacement, and can be used to monitor displacement and temperature of buildings, bridges, dams, slopes, etc.