Open-loop experiments of resonator micro-optic gyro

Abstract

An open-loop resonator micro-optic gyro (R-MOG) with a 6 cm-long waveguide-type ring resonator is set up using the phase modulation spectroscopy technique. In the experiment, according to the test parameters of the resonator, the shot-noise-limited sensitivity is estimated to be 1.07×10⁻⁴ rad/s. From the test demodulation signal, the gyro dynamic range of ±7.0×10³ rad/s is obtained. Using different phase modulation frequencies, the open-loop gyro output signal is observed when the equivalent gyro rotation is applied to the acoustic-optical modulators (AOMs). The sensitivity of the R-MOG can be increased by some countermeasures against system noise.

Keywords

Ring Resonator / Sagnac Effect / Demodulation Signal / Optic Gyro / Waveguide Ring

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