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中文摘要：
光学微球谐振腔由于其超高的Q值及极小的模式体积等优点,在高灵敏度传感和光通信等方面得到了广泛的研究,理论分析了尾纤弯曲产生的应力双折射,并分析了其对微球腔谐振特性的影响。定量地改变尾纤弯曲曲率,测试微球腔的谐振波长,研究了微球腔尾纤对弯曲曲率的敏感特性。实验结果表明,光学微球腔尾纤弯曲影响着微球腔的谐振模式,能够导致谐振波长变化,随其弯曲曲率的变大,微球腔的谐振波长持续红移,能够用来测量曲率。
英文摘要：
Optical microsphere resonant cavity has been widely researched in the field of high sensitivity sensor and optical communication because of high Q value and minimal model volume. The stress birefringence induced by fiber- tail bend and the influence on resonance characteristics of optical microsphere cavity were analyzed theoretically.Fiber- tail curvature was changed quantitatively,and microsphere resonant wavelength was measured. Fiber- tail curvature sensitivity of high- Q optical microsphere cavity was studied. The results show that fiber bend affects the resonant modes of microsphere cavity,and the bend can induce resonant wavelength redshift. Resonant wavelength becomes longer with the increase of the bending curvature. So this can be used to measure curvature.
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