Symmetry-protected bound states in the continuum on an integrated photonic platform
Abstract: Bound states in the continuum (BICs) have attracted much attention in the field of nanophotonics owing to their ability to trap photons without loss. Recently, a low-refractive-index (RI) waveguide loaded on a high-RI slab structure was demonstrated to support BICs. However, strict control of structural parameters is required due to the accidental nature of those BICs. Here, we propose a novel structure consisting of two low-RI vertically coupled waveguides loaded on a high-RI slab. This structure supports symmetry-protected BICs (SP-BICs), which do not require strict control of the geometric parameters. Such SP-BICs can also possess an infinitely high quality factor in resonant structures, which can be harnessed for ultranarrow-bandwidth spatial and spectral filters. Our work opens a new way of harnessing BICs on an integrated photonic platform for realizing nanophotonic circuits and devices.
- Standort
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Deutsche Nationalbibliothek Frankfurt am Main
- Umfang
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Online-Ressource
- Sprache
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Englisch
- Erschienen in
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Symmetry-protected bound states in the continuum on an integrated photonic platform ; volume:13 ; number:18 ; year:2024 ; pages:3527-3534 ; extent:8
Nanophotonics ; 13, Heft 18 (2024), 3527-3534 (gesamt 8)
- Urheber
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Lu, Qijing
Feng, Ziyao
Sun, Xiankai
- DOI
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10.1515/nanoph-2024-0196
- URN
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urn:nbn:de:101:1-2408231537412.551787778076
- Rechteinformation
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Letzte Aktualisierung
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14.08.2025, 10:57 MESZ
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Beteiligte
- Lu, Qijing
- Feng, Ziyao
- Sun, Xiankai
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