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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...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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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. |
format | Online Article Text |
id | pubmed-7755907 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
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 |
work_keys_str_mv | AT linhao diracvortextopologicalphotoniccrystalfibre AT luling diracvortextopologicalphotoniccrystalfibre |