Fig. 1.
A schematic of the physical appearance of the MOG with the resonator.
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Lian Ning, Lijun Guo, Mei Kong, Tuoyuan Chen. Waveguide-type optical passive ring resonator gyro using frequency modulation spectroscopy technique[J]. Journal of Semiconductors, 2014, 35(12): 124008. doi: 10.1088/1674-4926/35/12/124008
L Ning, L J Guo, M Kong, T Y Chen. Waveguide-type optical passive ring resonator gyro using frequency modulation spectroscopy technique[J]. J. Semicond., 2014, 35(12): 124008. doi: 10.1088/1674-4926/35/12/124008.
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Waveguide-type optical passive ring resonator gyro using frequency modulation spectroscopy technique
doi: 10.1088/1674-4926/35/12/124008
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Abstract
This paper reports the experimental results of silica on a silicon ring resonator in a resonator micro optic gyroscope based on the frequency modulation spectroscopy technique by our research group. The ring resonator is composed of a 4 cm diameter silica waveguide. By testing at λ=1550 nm, the FSR, FWHM and the depth of resonance are 3122 MHz, 103.07 MHz and 0.8 respectively. By using a polarization controller, the resonance curve under the TM mode can be inhibited. The depth of resonance increased from 0.8 to 0.8913, namely the finesse increase from 30.33 to 33.05. In the experiments, there is an acoustic-optical frequency shifter (AOFS) in each light loop. We lock the lasing frequency at the resonance frequency of the silica waveguide ring resonator for the counterclockwise lightwave; the frequency difference between the driving frequencies of the two AOFS is equivalent to the Sagnac frequency difference caused by gyro rotation. Thus, the gyro output is observed. The slope of the linear fit is about 0.330 mV/(°/s) based on the -900 to 900 kHz equivalent frequency and the gyro dynamic range is ±2.0×103 rad/s.-
Keywords:
- ring resonator,
- micro optic gyroscope,
- resonance frequency
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References
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