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Analysis of thermo-optic effect-based refractive index dynamic modulation in microspherical resonator

机译:微球谐振器中基于热光效应的折射率动态调制分析

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The thermo-optic effect has been utilized to modulate the refractive index dynamically within a whispering gallery mode resonator. Modulation with a large tuning range is mostly performed for mode locking and dynamic control of the optical path at a modulation frequency as low as several hertz, while high-frequency modulation up to megahertz is mainly exploited in optical switching devices with small tuning range. Here, we introduce the response functions theoretically to describe the dynamic response of temperature changes in the mode volume and the resonator body, respectively. This result is verified experimentally in silica microspherical resonators. The dependence of the tuning range on the modulation frequency is achieved. This knowledge could pave the way toward more practical control of refractive index in microresonators. (C) 2015 Optical Society of America
机译:热光效应已被用于在回音壁模式谐振器内动态地调节折射率。具有大调谐范围的调制主要用于在低至几赫兹的调制频率下进行光路的锁模和动态控制,而高达兆赫兹的高频调制主要用于具有小调谐范围的光开关设备中。在这里,我们从理论上介绍响应函数,以分别描述模式体积和谐振器主体中温度变化的动态响应。这个结果在二氧化硅微球谐振器中得到了实验验证。实现了调谐范围对调制频率的依赖。这些知识可以为微谐振器中折射率的更实际控制铺平道路。 (C)2015年美国眼镜学会

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