Suppression of avoided resonance crossing in microresonators

Chanju Kim, Kresten Yvind, Minhao Pu*

*Corresponding author for this work

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Kerr frequency comb generation in microresonators is enabled by notable developments in fabrication technology and novel nonlinear material platforms. However, even in a low loss and highly nonlinear microresonator, the avoided resonance crossing may hamper reliable frequency comb generation. We present a method to suppress the avoided resonance crossing induced by polarization mode coupling. Our approach employs a filter waveguide coupled to a microring resonator for selective filtering of the TM00 mode while keeping the operational TE00 mode with low loss. We experimentally demonstrate an avoided-crossingsuppressed microresonator in the AlGaAs-on-insulator platform.

Original languageEnglish
JournalOptics Letters
Issue number15
Pages (from-to)3508-3511
Publication statusPublished - 1 Aug 2021

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© 2021 Optical Society of America.


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