Fig. 1. Schematic configuration of polarization maintaining FOG

Fig. 2. (a) Fiber coil under the effect of space magnetic field; (b) decomposition of transverse magnetic field

Fig. 3. Fiber coil under the action of transverse magnetic field and temperature field

Fig. 4. Temperature dependence of Verdet constant and linear birefringence

Fig. 5. Relationship between the transverse magnetic field error and the temperature

Fig. 6. Experimental system. (a) Non-skeleton coil; (b) temperature chamber; (c) Helmholtz coil and fiber coil

Fig. 7. Setting and testing temperature

Fig. 8. Experimental results of transverse magnetic field error under different temperatures

Fig. 9. Experimental results of thermal-induced bias drift. (a) Temperature output; (b) output of the polarization maintaining FOG