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首页> 外文期刊>Applied optics >Selective excitation of axial modes in a high-Q microcylindrical resonator for controlled and robust coupling
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Selective excitation of axial modes in a high-Q microcylindrical resonator for controlled and robust coupling

机译：高Q微圆柱谐振器中轴向模式的选择性激励，以实现受控和鲁棒耦合

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摘要

We investigate selective excitation of localized axial modes in a high-Q microcylindrical resonator experimentally, numerically, and theoretically. The resonator is fabricated using a standard fusion splicer, and the characteristic resonance spectra are acquired by using a tapered fiber coupled at different positions along the microcylinder. The spatial and spectral mode properties are analyzed with our numerical and theoretical model, which are in good agreement with the experimental results. Moreover, controlled and robust coupling is experimentally demonstrated by vertically moving the resonator while keeping it in contact with the tapered fiber. Our microcylindrical resonator combines clean and nearly equidistant spectra, a high quality factor up to 3.1 x 10(7), a large mode volume, and a more favorable frequency spacing of similar to 3.91 GHz, offering unique potential in sensors, microlasers, optical filters, group delay lines, and especially some applied fields that require tuning. (C) 2015 Optical Society of America
机译：我们在实验上，在数值上和在理论上研究了高Q微圆柱谐振腔中局部轴向模式的选择性激发。使用标准的熔接机制造谐振器，并通过使用沿着微圆柱体在不同位置耦合的锥形光纤来获取特征谐振谱。用我们的数值和理论模型分析了空间和光谱模式特性，这与实验结果非常吻合。此外，通过在保持谐振器与锥形光纤接触的同时垂直移动谐振器，实验证明了受控和鲁棒的耦合。我们的微圆柱谐振器结合了干净且几乎等距的光谱，高达3.1 x 10（7）的高质量因子，大模量以及更接近3.91 GHz的更佳频率间隔，在传感器，微激光器，光学滤波器中提供了独特的潜力，群组延迟线，尤其是一些需要调整的应用字段。 （C）2015年美国眼镜学会

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