Optoelectronic design parameters of interferometric fiber optic gyroscope with LiNbO_3 having north finder capability and earth rotation rate measurement

摘要

North finder capability gyroscopes supply the reference north azimuth information to the relevant base system. This paper covers the design details of both optical and electronic components of an open-loop Interferometric Fiber Optic Gyroscope (IFOG) with integrated-optic phase modulator LiNbO 3 and the measurement results of earth rotation rate carried out by means of the designed north finder IFOG with LiNbO 3 modulator in laboratory plane together. Scale factor model function is derived for the open-loop IFOG with LiNbO_ 3. Aditionaly, biastability and the temperature dependence of bias stability for the north finder IFOG have been studied in the temperature range 23°-42°C.