Fig. 1. Back-reflection noise of reflection-type WRR

Fig. 2. Detection principle of the RMOG

Fig. 3. Relationship between I₃ and the frequency deviation

Fig. 4. The relationship of the gyro output bias error induced by the intensity item of the back-reflection noise and the distance between the two reflection points

Fig. 5. The relationship of the gyro output bias error induced by the interference item of the back-reflection noise and the phase difference between the CW and the CCW lightwave

Fig. 6. Schematic of the RMOG based on the separation modulation technique

Fig. 7. The relationship between the back-reflection noise and the carrier suppression ratio

Fig. 8. Schematic of the RMOG based on the reciprocal modulation technique

Fig. 9. Schematic of the time division multiplexing RMOG

Fig. 10. Relationship between the channel crosstalk and the back-reflection noise

Fig. 11. Gyro out tests based the separate modulation and the reciprocal modulation techniques