A Reliable and Efficient Method for Temperature Sensing in Interferometric Fiber-Optic Gyro

Abstract

This paper shows a new way for measuring temperature in interferometric fiber-optic gyroscopes based on the temperature dependence of the integrated optical circuit. No component irrelevant to rotation sensing is involved. Calibration and temperature tests were conducted. The demonstrated repeatability and resolution are better than 0.5 °C. The hysteresis error is less than 1.76% full scale. The proposed method is reliable, radiation-resistant, and simple to be implemented, which would make it suitable for space application.