Fig. 1. Principle of closed-loop operation of fiber optic gyroscope

Fig. 2. Output of FOG and phase ramp after adding modulation signal. (a) Output of FOG when Δ?_s>2πk; (b) phase ramp after adding modulation signal when Δ?_s>2πk; (c) output of FOG when Δ?_s<2πk; (d) phase ramp after adding modulation signal when Δ?_s<2πk

Fig. 3. Circuit operation for crosstalk measurement

Fig. 4. Actual signals in circuits

Fig. 5. Measurement of simulated crosstalk in electronic circuits of three-axis integrated fiber optic gyroscopes

Fig. 6. Test data. (a) Test with turntable; (b) test with simulated rotation rate