Investigation of a serially coupled double microsphere resonator to expand resonance frequency spacing of microsphere resonators
Investigation of a serially coupled double microsphere resonator to expand resonance frequency spacing of microsphere resonators
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DOI：
10.1364/josab.33.001993
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发表时间：
2016-09
影响因子：
1.9
通讯作者：
Marzieh Saffari;A. Gholami;H. Latifi
中科院分区：
文献类型：
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作者：
Marzieh Saffari;A. Gholami;H. Latifi
研究了一种串联耦合的双微球谐振器，以减小微球谐振器系统中的非基波共振，从而扩大谐振频率间隔。利用耦合模理论对系统进行了建模，研究了谐振腔参数对耦合效率的影响。结果表明，将单个2 2 5μm微球串联到半径为5 0μm的微球上，使其输出光谱中的非基波共振显著减小，最小谐振频率间隔从5.2 pm扩展到0.6 nm。结果表明，该谐振器的品质因数可达2.14×108，与单个225μm微球谐振器的品质因数处于同一数量级。通过将模型的结果与其他小组发表的研究两个微球耦合诱导透明的实验结果进行比较，验证了该模型。
A serially coupled double microsphere resonator is investigated to reduce the nonfundamental resonances and therefore expand the resonance frequency spacing in microsphere resonator systems. Coupled-mode theory is used to model the system and investigate the resonator parameters as coupling efficiency. As a result, it is shown that the nonfundamental resonances in the output spectrum of a single 225 μm microsphere are reduced noticeably and therefore its minimum resonance frequency spacing is expanded from 5.2 pm to 0.6 nm by serially coupling to a 50 μm radius microsphere. Furthermore, it is shown that the quality factor of this resonator can reach 2.14×108, which is on the same order of a single 225 μm microsphere resonator. The model is verified by comparing the results of the model with the experimental results published by other groups to investigate induced transparency in the coupling of two microspheres.