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介绍了谐振式微光学陀螺(ROG)的基本原理与结构,对采用三角波频率调制的陀螺灵敏度进行了理论分析。以调频光谱测量原理为基础,把环形谐振腔视为具有洛伦兹型吸收谱的介质,推导出了谐振式微光学陀螺在最大灵敏度时输出的光强与谐振腔谐振特性曲线的对应关系,提出了一种谐振式微光学陀螺最佳灵敏度的调节方法,结合陀螺系统信号的调制与解调,简化了陀螺系统最佳灵敏度的调节过程,给出了实际陀螺系统的灵敏度的测试实验。实验结果表明,此调节方法能够将谐振式微光学陀螺系统调节到最佳灵敏度,适合在实际的谐振式陀螺系统调试中运用。
The basic principle and structure of resonant micro optical gyroscope (ROG) are introduced. The gyroscope sensitivity of triangular wave frequency modulation is analyzed theoretically. Based on the principle of FM spectroscopy, the ring resonator is regarded as a medium with Lorentz-type absorption spectrum, and the corresponding relationship between the intensity of the output of the resonator micro-opto-gyro at the maximum sensitivity and the resonance characteristic curve of the resonator is deduced A method for adjusting the optimal sensitivity of a resonant micro-optical gyroscope is proposed, which combines with the modulation and demodulation of the gyroscope signals to simplify the adjustment of the optimum sensitivity of the gyroscopic system. The experiment of the sensitivity of the actual gyroscope system is given. The experimental results show that this method can adjust the resonant micro-optic gyro system to the best sensitivity and is suitable for the actual debugging of the resonant gyro system.