Salient role of the non-Hermitian coupling for optimizing conditions in multiple maximizations of inter-cavity light transfer

HYEON HYE YU, SUNJAE GWAK, HYUNDONG KIM, JUNG WAN RYU, CHIL MIN KIM, CHANG HWAN YI

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

We reveal that non-Hermitian lossy couplings in an inter-cavity light transfer process are crucial for an optimum light transfer, unlike the prevailed belief. Our results turn out the fact that the light transfer can have multiple maxima following the increased inter-cavity distance. To validate this finding both in the weak and strong coupling regimes, we demonstrate our claim in the vicinity of the so-called exceptional point. We believe our results can contribute to realizing coupled-optical-cavity-based devices which is functional with an ultra-efficient light transfer, especially when the device scale is as small as the operation wavelength.

Original languageEnglish
Pages (from-to)19998-20009
Number of pages12
JournalOptics Express
Volume29
Issue number13
DOIs
StatePublished - 21 Jun 2021

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© 2021 Optical Society of America.

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