Publication detail

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

PETRÁČEK, J. KUZMIAK, V.

Original Title

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

Type

journal article in Web of Science

Language

English

Original Abstract

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

Keywords

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

Authors

PETRÁČEK, J.; KUZMIAK, V.

Released

26. 9. 2022

Publisher

Optica Publishing Group

Location

WASHINGTON

ISBN

1094-4087

Periodical

OPTICS EXPRESS

Year of study

30

Number

20

State

United States of America

Pages from

35712

Pages to

35724

Pages count

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"
}