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通过Rsoft软件对锥形光纤倏逝场能量分布特性进行仿真,从理论上分析锥形光纤激发微谐振腔非互易性产生的原因。实验中,光纤熔融二氧化硅微球腔通过高精度三维调节架沿光纤方向移动,每次移动相同距离选取测试点,记录光源正反传输情况下微球腔谐振谱线,得到谐振谱线特征参量随倏逝场变化的非互易性变化规律。通过计算微球腔理论鉴频曲线获得非互易性对陀螺动态范围与灵敏度的影响,并提出抑制方法。
Rsoft software was used to simulate the energy distribution characteristics of evanescent field in tapered optical fiber, and the reason of non-reciprocity of tapered optical fiber excited resonant cavity was theoretically analyzed. In the experiment, the optical fiber fused silica microsphere cavity is moved along the optical fiber by a high-precision three-dimensional adjusting frame. Each time the same distance is selected, test points are recorded, and resonance spectra of the microsphere cavity are recorded when the light source is transmitted forward and backward. Variability of Nonreciprocal Variations of Parameter with Evanescence Field. The effect of nonreciprocity on the dynamic range and sensitivity of the gyroscope is obtained by calculating the microsphere cavity time-frequency curve, and the suppression method is proposed.