锥形光纤微球腔谐振陀螺光学模式非互易性研究  

Optical Model Non-Reciprocity of Microsphere Resonator Excited by Tapered Fiber for Resonator Optic Gyroscope

作　　者：王明焕[1] 唐军[1] 郭泽彬 商成龙 张天恩[1] 雷龙海 郭浩[1] 刘建华[1] 薛晨阳[1] 张文栋[1] 刘俊[1] 

机构地区：[1]中北大学电子测试技术国防科技重点实验室仪器科学与动态测试教育部重点实验室,山西太原030051

出　　处：《中国激光》2015年第3期186-190,共5页Chinese Journal of Lasers

基　　金：国家自然科学基金(91123036;91123016);国家杰出青年科学基金(51225504);国家973计划(2012CB723404);山西省高等学校优秀青年学术带头人支持计划

摘　　要：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。Based on Rsoft software, the tapered fiber evanescent field distribution is simulated, and the reason for the nonreciprocity of micro- resonator excited by tapered fiber is analyzed in theory. Optical fiber fused silica microsphere cavity is used in the experiment. Through high precision three dimensional adjustment along the fiber direction, test points are selected after moving the same distance and microsphere cavity resonance spectra are recorded under the case of forward and converse transmission of light, getting the regular pattern of non-reciprocity of the resonance spectral parameters with the variation of evanescent field.By calculating the frequency discrimination curve of microsphere cavity, the influence of non- reciprocity on the dynamic range and sensitivity of gyroscope is got, and suppression methods are proposed.

关 键 词：激光光学 光学微球腔 锥形光纤 倏逝场 非互易性 谐振式光学陀螺 

分 类 号：TN815[电子电信—信息与通信工程]