谐振式光学陀螺环形谐振腔内背向反射研究

张旭琳; 徐平

光学学报, 2009, 29 (8): 2302, 网络出版: 2009-08-17

谐振式光学陀螺环形谐振腔内背向反射研究

nvestigation of Back-Reflection of Ring Resonator in Resonator Optic Gyro

论文大纲

张旭琳 ^*徐平

作者单位

深圳大学电子科学与技术学院深圳市微纳光子信息技术重点实验室, 广东深圳 518060

谐振式光学陀螺背向反射标度因子开环输出信号 resonator optic gyro back-reflection scale factor open-loop output signal

摘要

背向反射是谐振式光学陀螺（ROG）中的主要噪声之一。通过光波场叠加的方法, 建立了环形谐振腔内的单点反射模型, 得到系统中背向反射噪声引起的系统标度因子误差与环形谐振腔内反射参数的解析表达式。利用该表达式, 通过Matlab进行数值拟合, 分别对谐振式光纤陀螺系统（R-FOG）和谐振式微光学陀螺系统（R-MOG）中的背向反射噪声进行理论分析和比较。实验中, 通过一定的措施抑制了系统中的背向反射噪声, 分别得到R-FOG和R-MOG系统的开环输出信号。通过理论分析和实验验证背向反射噪声在R-MOG中的影响较大。为ROG中背向反射噪声的抑制及ROG系统的搭建提供了理论和实验依据。

Abstract

Back-reflection is one of the important noise sources in the resonator optic gyro (ROG). Using optical field overlapping method, the single-reflection-model inside the ring resonator was set up and the relation between the scale-factor error and the parameters about reflection noise was gotten. By the numerical analysis in Matlab, the back-reflection noise in the resonator fiber-optic gyro (R-FOG) and the resonator micro-optic gyro (R-MOG) was analyzed and compared in theory. The open-loop output signal in ROG was detected by taking some countermeasure to overcome the noise caused by the backscattering. It was proved theoretically and experimentally that the noise caused by the back-reflection influences the R-MOG more severely.

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张旭琳, 徐平. 谐振式光学陀螺环形谐振腔内背向反射研究[J]. 光学学报, 2009, 29(8): 2302. IZhang Xulin, Xu Ping. nvestigation of Back-Reflection of Ring Resonator in Resonator Optic Gyro[J]. Acta Optica Sinica, 2009, 29(8): 2302.

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