Title :
Research on polarization characteristics of hybrid optical structure IFOG
Author :
Qiang, Yu ; Xuyou, Li ; Xin, Li
Author_Institution :
Dept. of Autom., Univ. of Harbin Eng., Harbin, China
Abstract :
This paper introduces a hybrid optical structure of interferometric fiber-optic gyroscope (IFOG). The IFOG is characterized by using single-mode optical fiber coupler and low-polarized light source. Through the theoretical analysis on the specialty of polarization, it makes the conclusion that the hybrid optical structure IFOG has a correspondingly lower phasic error. The testing results confirm that the IFOG is provided with considerable precision and performance. The gyro bias stability can get up to 0.008deg/h (room temperature), wide range of temperature (-40~60degC) better than 0.5deg/h and, could satisfy the need of high-precision inertial navigation.
Keywords :
fibre optic gyroscopes; inertial navigation; light interferometry; optical fibre couplers; optical fibre polarisation; gyro bias stability; high-precision inertial navigation; hybrid optical structure IFOG; interferometric fiber-optic gyroscope; low-polarized light source; polarization characteristics; single-mode optical fiber coupler; Gyroscopes; Inertial navigation; Light sources; Optical fiber couplers; Optical fiber polarization; Optical fiber testing; Optical interferometry; Optical polarization; Stability; Temperature distribution; bias stability; hybrid optical structure; interferometric fiber-optic gyroscope (IFOG); polarization error;
Conference_Titel :
Electronic Measurement & Instruments, 2009. ICEMI '09. 9th International Conference on
Conference_Location :
Beijing
Print_ISBN :
978-1-4244-3863-1
Electronic_ISBN :
978-1-4244-3864-8
DOI :
10.1109/ICEMI.2009.5273986
