Detail publikačního výsledku

Photonic waveguides with bound states in the continuum

PETRÁČEK, J.; ČTYROKÝ, J.; KUZMIAK, V.; RICHTER, I.

Originální název

Photonic waveguides with bound states in the continuum

Anglický název

Photonic waveguides with bound states in the continuum

Druh

Stať ve sborníku v databázi WoS či Scopus

Originální abstrakt

Recent research on bound states in the continuum (BICs) in photonic waveguides relied mainly on structures that exhibit the effect of lateral leakage. However, the propagating BICs that are supported in such systems have some limitations: they are localized in or in the vicinity of high-refractive-index materials, they are observed as quasi-TM polarized waves, and they appear only for certain "magic" sets of parameters. Here, we demonstrate two simple waveguide systems that enable alternative mechanisms of BIC formation. In contrast to the previously described configurations, the first geometry, consisting of a rectangular waveguide coupled to a planar waveguide, facilitates genuine guiding of quasi-TE modes in the core with the lower refractive index. The second system, proton exchanged waveguide in Z-cut thin-film lithium niobate, can support very low-loss TM-polarized quasi-BIC modes for a range of waveguide widths not limited to "magic widths".

Anglický abstrakt

Recent research on bound states in the continuum (BICs) in photonic waveguides relied mainly on structures that exhibit the effect of lateral leakage. However, the propagating BICs that are supported in such systems have some limitations: they are localized in or in the vicinity of high-refractive-index materials, they are observed as quasi-TM polarized waves, and they appear only for certain "magic" sets of parameters. Here, we demonstrate two simple waveguide systems that enable alternative mechanisms of BIC formation. In contrast to the previously described configurations, the first geometry, consisting of a rectangular waveguide coupled to a planar waveguide, facilitates genuine guiding of quasi-TE modes in the core with the lower refractive index. The second system, proton exchanged waveguide in Z-cut thin-film lithium niobate, can support very low-loss TM-polarized quasi-BIC modes for a range of waveguide widths not limited to "magic widths".

Klíčová slova

bound states in the continuum; integrated photonics; guided modes; leaky modes; anisotropic waveguides; electro-optic modulators

Klíčová slova v angličtině

bound states in the continuum; integrated photonics; guided modes; leaky modes; anisotropic waveguides; electro-optic modulators

Autoři

PETRÁČEK, J.; ČTYROKÝ, J.; KUZMIAK, V.; RICHTER, I.

Rok RIV

2025

Vydáno

15.07.2024

Nakladatel

IEEE

Místo

NEW YORK

ISBN

979-8-3503-7732-3

Kniha

24th International Conference on Transparent Optical Networks (ICTON)

ISSN

2161-2064

Periodikum

IEEE Conference proceedings

Stát

Spojené státy americké

Strany od

1

Strany do

4

Strany počet

4

BibTex

@inproceedings{BUT197209,
  author="Jiří {Petráček} and Jiří {Čtyroký} and Vladimír {Kuzmiak} and Ivan {Richter}",
  title="Photonic waveguides with bound states in the continuum",
  booktitle="24th International Conference on Transparent Optical Networks (ICTON)",
  year="2024",
  journal="IEEE Conference proceedings",
  pages="1--4",
  publisher="IEEE",
  address="NEW YORK",
  doi="10.1109/ICTON62926.2024.10647505",
  isbn="979-8-3503-7732-3",
  issn="2161-2064"
}