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arXiv · 2410.17955

A new exceptional point condition for coupled microresonators with coupled mode theory in space

Kunpeng Zhu·Xiaoyan Zhou·Yinxin Zhang·Zhanhua Huang·Lin Zhang
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Abstract

We derive new exceptional point (EP) conditions of the coupled microring resonators using coupled mode theory in space, a more accurate approach than the commonly used coupled mode theory in time. Transmission spectra around EPs obtained from the two models have been compared on two material platforms, revealing non-negligible deviations. Our analysis provides a guide for accurately determining parameter sets of coupled microrings at EPs and deepens our understanding on parity-time-symmetric coupled resonators at EPs.

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Kunpeng Zhu, Xiaoyan Zhou, Yinxin Zhang, Zhanhua Huang, Lin Zhang. 2024-10-23. A new exceptional point condition for coupled microresonators with coupled mode theory in space. https://arxiv.org/abs/2410.17955

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