中文摘要：

光学微球腔的回音壁模式使其存储能量大,从而获得高的品质因数。该文介绍了微球腔的制备方法;介绍了微球腔与锥形光纤的耦合理论,并对其耦合特性作出了分析;搭建了微球腔谐振谱探测系统并分析了不同耦合模式下的谐振特性;设计了微球腔谐振频率跟踪与锁定系统。通过仿真得到了不同调制频率下的鉴频曲线,分析了其吸收谱线与色散谱线特性。实验制得微球腔直径为440μm,耦合状态下的品质因数可达1.08×108;调制频率对鉴频曲线特性影响很大,低频调制下,优化调制后,可提升跟踪锁定效果,为后续的实验奠定了良好的基础。

英文摘要：

The optic microsphere cavity（OMC）can store more energy because of its whispering gallery mode（WGM）,so that it obtains higher quality factors（Q）;The preparation method of OMC was introduced in this paper,and the coupling principle of OMC with tapered fiber was introduced and the coupling characteristic was analyzed.An OMC resonance detection system was set up and the resonance characteristic of different coupling mode was analyzed.An OMC resonance frequency tracking and locking system was designed.The frequency discrimination curve at different modulation frequency was obtained and the characteristics of absorption line and dispersive line were analyzed.The experimentally fabricated OMC has the diameter of440μm,the Qfactor of 1.08×108 under coupling condition.The modulation frequency can significantly affect the frequency discrimination characteristics.Under low frequency modulation,the tracking and locking effect can be improved after optimizing the modulation.The study lays a good foundation for the following experiments.