Non-Hermitian Temporal Coupled-Mode Theory: Effects of Imaginary Couplings on Exceptional Points

Kenta Takata; Kenta Takata; Nathan Roberts; Akihiko Shinya; Akihiko Shinya; Masaya Notomi; Masaya Notomi; Masaya Notomi

doi:10.1364/FIO.2021.FM2E.1

Frontiers in Optics + Laser Science 2021
Technical Digest Series (Optica Publishing Group, 2021),
paper FM2E.1
•https://doi.org/10.1364/FIO.2021.FM2E.1

Non-Hermitian Temporal Coupled-Mode Theory: Effects of Imaginary Couplings on Exceptional Points

Kenta Takata, Nathan Roberts, Akihiko Shinya, and Masaya Notomi

Frontiers in Optics 2021

Washington, DC United States
1–4 November 2021
ISBN: 978-1-55752-308-2

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Nanophotonics and Nanoplasmonics (FM2E)

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K. Takata, N. Roberts, A. Shinya, and M. Notomi, "Non-Hermitian Temporal Coupled-Mode Theory: Effects of Imaginary Couplings on Exceptional Points," in Frontiers in Optics + Laser Science 2021, C. Mazzali, T. (T.-C.) Poon, R. Averitt, and R. Kaindl, eds., Technical Digest Series (Optica Publishing Group, 2021), paper FM2E.1.

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Abstract

We reveal imaginary coupling components in the coupled-mode theory for evanescently coupled cavities with gain and loss. We show how exceptional points are resolved and restored in such systems where their effects are generally inevitable.

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