Photonic waveguides with bound states in the continuum

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26210%2F24%3APU155912" target="_blank" >RIV/00216305:26210/24:PU155912 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1109/ICTON62926.2024.10647505" target="_blank" >http://dx.doi.org/10.1109/ICTON62926.2024.10647505</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1109/ICTON62926.2024.10647505" target="_blank" >10.1109/ICTON62926.2024.10647505</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Photonic waveguides with bound states in the continuum

Popis výsledku v původním jazyce

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".

Název v anglickém jazyce

Photonic waveguides with bound states in the continuum

Popis výsledku anglicky

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".

Druh

D - Stať ve sborníku

CEP obor

—

OECD FORD obor

10306 - Optics (including laser optics and quantum optics)

Projekt

—

Návaznosti

S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2024

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

24th International Conference on Transparent Optical Networks (ICTON)

ISBN

979-8-3503-7732-3

ISSN

2161-2064

e-ISSN

—

Počet stran výsledku

4

Strana od-do

1-4

Název nakladatele

IEEE

Místo vydání

NEW YORK

Místo konání akce

Bari

Datum konání akce

14. 7. 2024

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

001315628100107