Sagnac fiber optic sensor for temperature measurement

A new type of high-precision fiber optic sensor for temperature measurement named Sagnac fiber optic temperature sensor is introduced.This sensor is based on fiber optic Sagnac interferometer.After a detailed analysis of its principle,the connection between temperature and the output of the interferometer was testified.A complete system was designed and set up.Experiment and test results show that the sensor can achieve high-precision and large-scale temperature measurement.