Detail publikace

Bound states in the continuum in waveguide arrays within a symmetry classification scheme

PETRÁČEK, J. KUZMIAK, V.

Originální název

Bound states in the continuum in waveguide arrays within a symmetry classification scheme

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

We study a photonic implementation of a modified Fano-Anderson model - a waveguide array with two additional waveguides and by using the coupled mode theory we calculate its spectral and scattering properties. We classify eigenmodes according to vertical symmetry of the structure given by self-coupling coefficients of the additional waveguides and establish the conditions for bound states in the continuum (BIC) existence. The main predictions drawn from the theoretical model are verified by rigorous full-wave simulations of realistic structures. We use the Weierstrass factorization theorem and interpret the scattering spectra of the systems with broken symmetry in terms of the eigenmodes. The Fano resonance related with excitation of quasi-BIC is explained as arising from the interference between this mode and another leaky mode. (c) 2022 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement

Klíčová slova

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

Autoři

PETRÁČEK, J.; KUZMIAK, V.

Vydáno

26. 9. 2022

Nakladatel

Optica Publishing Group

Místo

WASHINGTON

ISSN

1094-4087

Periodikum

OPTICS EXPRESS

Ročník

30

Číslo

20

Stát

Spojené státy americké

Strany od

35712

Strany do

35724

Strany počet

13

URL

https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-20-35712&id=502640

BibTex

@article{BUT180431,
  author="Jiří {Petráček} and Vladimír {Kuzmiak}",
  title="Bound states in the continuum in waveguide arrays within a symmetry classification scheme",
  journal="OPTICS EXPRESS",
  year="2022",
  volume="30",
  number="20",
  pages="35712--35724",
  doi="10.1364/OE.464599",
  issn="1094-4087",
  url="https://opg.optica.org/oe/fulltext.cfm?uri=oe-30-20-35712&id=502640"
}