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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。
Due to its high Q value and small mode volume, the optical microsphere resonator has been widely studied in high sensitivity sensing and optical communication. The stress birefringence induced by fiber pigtail bending is analyzed theoretically Its effect on the microsphere cavity resonance characteristics. The bending curvature of tail fiber was quantitatively changed, the resonance wavelength of microsphere cavity was tested, and the sensitivity of microspherical cavity to the curvature of curvature was studied. The experimental results show that the curvature of optical microsphere cavity pigtail affects the resonant mode of the microsphere cavity, which can lead to the change of the resonant wavelength. With the increase of the curvature of curvature, the resonant wavelength of the microsphere cavity continues to redshift and can be used to measure the curvature.