Temperature sensing characteristics research based on FBG sensor

In the actual production operation, it is important to monitor the environmental temperature. Aiming at the problems of complex structure and electromagnetic interference of traditional electric sensors, a temperature sensor based on fiber Bragg grating (FBG) is designed to monitor the ambient temperature. The response model between the wavelength variation of FBG center and temperature is established by the neural network fitting tool. The experimental results show that the model has a minimum root-mean-square error of 0.83426, and the overall correlation between the predicted data and the real data reaches 0.98512, which meets the actual monitoring requirements.