| Téléchargement | - Voir la version finale : Parity-time and anti-parity-time states of Bragg gratings and their representation in spherical coordinates (PDF, 3.1 Mio)
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| DOI | Trouver le DOI : https://doi.org/10.1364/OE.542182 |
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| Auteur | Rechercher : Hao, Tianyi1Identifiant ORCID : https://orcid.org/0000-0002-7760-9151; Rechercher : Cheben, Pavel1, 2Identifiant ORCID : https://orcid.org/0000-0003-4232-9130; Rechercher : Schmid, Jens H.2Identifiant ORCID : https://orcid.org/0000-0003-3508-7428; Rechercher : Berini, Pierre1Identifiant ORCID : https://orcid.org/0000-0002-6795-7275 |
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| Affiliation | - Université d'Ottawa
- Conseil national de recherches Canada. Quantique et nanotechnologies
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| Bailleur de fonds | Rechercher : National Research Council Canada; Rechercher : Natural Sciences and Engineering Research Council of Canada |
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| Format | Texte, Article |
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| Résumé | Parity-time (PT) symmetry and anti-PT symmetry are two interesting types of non-Hermitian Hamiltonian systems. We propose a spherical graphical representation to concisely capture the (anti-)PT symmetry design space of Bragg gratings having phase-shifted real and imaginary refractive index perturbations. A general Bragg grating perturbation function is used such that designs can be arbitrarily changed to reach different (anti-)PT symmetric states. Special cases having simplified perturbations are explored, consisting of real index only, imaginary index only, and perturbations reaching (anti-)PT symmetry unbroken, broken, and exceptional point states. The evolution of the PT states of Bragg gratings and their interesting and unique properties lead to potential applications in sensing and lasing. |
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| Date de publication | 2024-12-03 |
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| Maison d’édition | Optica Publishing Group |
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| Déclaration de droit d’auteur | - © 2024 Optica Publishing Group
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| Licence | |
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| Dans | |
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| Langue | anglais |
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| Publications évaluées par des pairs | Oui |
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| Exporter la notice | Exporter en format RIS |
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| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
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| Identificateur de l’enregistrement | f71b45fd-aca0-4521-9322-83048b2843a3 |
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| Enregistrement créé | 2026-01-23 |
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| Enregistrement modifié | 2026-03-18 |
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