Effect of the symmetry breaking on the scattering properties of the Fano-Anderson model

Effect of the symmetry breaking on the scattering properties of the Fano-Anderson model

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We demonstrate spectral and scattering properties of a photonic implementation of a modified Fano-Anderson model. The model includes formation of a symmetry-protected bound state in the continuum (BIC). We interpret the scattering spectra of the structures with the broken symmetry in terms of system eigenmodes. The Fano resonance associated with the excitation of quasi-BIC is explained as arising from the interference between this mode and another leaky mode.

We demonstrate spectral and scattering properties of a photonic implementation of a modified Fano-Anderson model. The model includes formation of a symmetry-protected bound state in the continuum (BIC). We interpret the scattering spectra of the structures with the broken symmetry in terms of system eigenmodes. The Fano resonance associated with the excitation of quasi-BIC is explained as arising from the interference between this mode and another leaky mode.

bound states in the continuum; Fano resonance; Fano-Anderson model; waveguide arrays; Weierstrass factorization theorem

bound states in the continuum; Fano resonance; Fano-Anderson model; waveguide arrays; Weierstrass factorization theorem

KUZMIAK, V.; PETRÁČEK, J.

2024

06.06.2023

9781510662568

Proceedings of SPIE - The International Society for Optical Engineering

0277-786X

Proceedings of SPIE

12568

Spojené státy americké

1256808-1

1256808-6

6

https://www.spiedigitallibrary.org/conference-proceedings-of-spie/12568/2666447/Effect-of-the-symmetry-breaking-on-the-scattering-properties-of/10.1117/12.2666447.full#_=_