Fig. 1. Schematic diagram of equivalent asymmetric length

Fig. 2. Schematic diagram of physical midpoint change

Fig. 3. Fiber coil test principle

Fig. 4. Test principle of equivalent asymmetric length

Fig. 5. Temperature test curves. (a) Temperature gradient of 1 ℃/min; (b) temperature gradient of 2 ℃/min

Fig. 6. Fiber coil test curves. (a) Temperature gradient of 1 ℃/min; (b) temperature gradient of 2 ℃/min

Fig. 7. Fitting curves of fiber coil equivalent asymmetric length. (a) Temperature gradient of 1 ℃/min; (b) temperature gradient of 2 ℃/min

Fig. 8. Fitting curves of equivalent asymmetry length and full-temperature zero bias range

Fig. 9. Symmetry adjustment effect for assembly at 1 ℃/min. (a) FOG 1; (b) FOG 2; (c) FOG 3

Fig. 10. Symmetry adjustment effect for assembly at 2 ℃/min. (a) FOG 1; (b) FOG 2; (c) FOG 3