Chinese Optics Letters, 2018, 16 (1): 010608, Published Online: Jul. 17, 2018
Suppression of backscattering induced noise by the sideband locking technique in a resonant fiber optic gyroscope 
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Figures & Tables
Fig. 1. Illustration of the RFOG system and the frequency components in the CW and CCW directions. C1 and C2: couplers.
Fig. 2. Spectrum after the phase is modulated, and the carrier component ω 0
Fig. 3. Illustration of carrier suppression by locking the sideband to the cavity resonance.
Fig. 4. (Color online) Whole scheme when sideband locking and different modulation frequencies are applied to the system.
Fig. 5. (Color online) CW/CCW demodulation and the locking scheme when different modulation frequencies are adopted.
Fig. 8. (Color online) Curves obtained in the experiments. (1) The PZT driving voltage on the laser; (2) the intensity output detected by PD; (3) the demodulation of the cosine term of Eq. (3 ); (4) the demodulation of sine term of Eq. (3 ).
Fig. 9. (Color online) Demodulation curves obtained from experiments. The CW and CCW modulation frequencies are 3.5 MHz and 3.56 MHz, respectively. The right window is the magnification of the part in the ellipse.
Ning Liu, Yanxiong Niu, Lishuang Feng, Hongchen Jiao, Xiao Wang. Suppression of backscattering induced noise by the sideband locking technique in a resonant fiber optic gyroscope[J]. Chinese Optics Letters, 2018, 16(1): 010608.
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