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Dirac-vortex topological photonic crystal fibre

The success of photonic crystal fibres relies largely on the endless variety of two-dimensional photonic crystals in the cross-section. Here, we propose a topological bandgap fibre whose bandgaps along in-plane directions are opened by generalised Kekulé modulation of a Dirac lattice with a vortex p...

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Detalles Bibliográficos
Autores principales: Lin, Hao, Lu, Ling
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7755907/
https://www.ncbi.nlm.nih.gov/pubmed/33353932
http://dx.doi.org/10.1038/s41377-020-00432-2
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author Lin, Hao
Lu, Ling
author_facet Lin, Hao
Lu, Ling
author_sort Lin, Hao
collection PubMed
description The success of photonic crystal fibres relies largely on the endless variety of two-dimensional photonic crystals in the cross-section. Here, we propose a topological bandgap fibre whose bandgaps along in-plane directions are opened by generalised Kekulé modulation of a Dirac lattice with a vortex phase. Then, the existence of mid-gap defect modes is guaranteed to guide light at the core of this Dirac-vortex fibre, where the number of guiding modes equals the winding number of the spatial vortex. The single-vortex design provides a single-polarisation single-mode for a bandwidth as large as one octave.
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spelling pubmed-77559072021-01-04 Dirac-vortex topological photonic crystal fibre Lin, Hao Lu, Ling Light Sci Appl Article The success of photonic crystal fibres relies largely on the endless variety of two-dimensional photonic crystals in the cross-section. Here, we propose a topological bandgap fibre whose bandgaps along in-plane directions are opened by generalised Kekulé modulation of a Dirac lattice with a vortex phase. Then, the existence of mid-gap defect modes is guaranteed to guide light at the core of this Dirac-vortex fibre, where the number of guiding modes equals the winding number of the spatial vortex. The single-vortex design provides a single-polarisation single-mode for a bandwidth as large as one octave. Nature Publishing Group UK 2020-12-22 /pmc/articles/PMC7755907/ /pubmed/33353932 http://dx.doi.org/10.1038/s41377-020-00432-2 Text en © The Author(s) 2020 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Lin, Hao
Lu, Ling
Dirac-vortex topological photonic crystal fibre
title Dirac-vortex topological photonic crystal fibre
title_full Dirac-vortex topological photonic crystal fibre
title_fullStr Dirac-vortex topological photonic crystal fibre
title_full_unstemmed Dirac-vortex topological photonic crystal fibre
title_short Dirac-vortex topological photonic crystal fibre
title_sort dirac-vortex topological photonic crystal fibre
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7755907/
https://www.ncbi.nlm.nih.gov/pubmed/33353932
http://dx.doi.org/10.1038/s41377-020-00432-2
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