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Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators
A symmetry-breaking nanostructure is proposed to achieve multiple Fano resonances. The nanostructure consists of an asymmetric ring resonator coupled to a plasmonic waveguide. The broken symmetry is introduced by deviating the centers of regular ring. New resonant modes that are not accessible throu...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Beilstein-Institut
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6941448/ https://www.ncbi.nlm.nih.gov/pubmed/31921524 http://dx.doi.org/10.3762/bjnano.10.236 |
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author | Ren, Xiao bin Ren, Kun Zhang, Ying Ming, Cheng guo Han, Qun |
author_facet | Ren, Xiao bin Ren, Kun Zhang, Ying Ming, Cheng guo Han, Qun |
author_sort | Ren, Xiao bin |
collection | PubMed |
description | A symmetry-breaking nanostructure is proposed to achieve multiple Fano resonances. The nanostructure consists of an asymmetric ring resonator coupled to a plasmonic waveguide. The broken symmetry is introduced by deviating the centers of regular ring. New resonant modes that are not accessible through a regular symmetric ring cavity are excited. Thus, one asymmetric cavity can provide more than one resonant mode with the same mode order. As a result, the interval of Fano resonances is greatly reduced. By combining different rings with different degrees of asymmetry, multiple Fano resonances are generated. Those Fano resonances have different dependences on structural parameters due to their different physical origin. The resonance frequency and resonance peak number can be arbitrarily adjusted by changing the degree of asymmetry. This research may provide new opportunities to design on-chip optical devices with great tuning performance. |
format | Online Article Text |
id | pubmed-6941448 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Beilstein-Institut |
record_format | MEDLINE/PubMed |
spelling | pubmed-69414482020-01-09 Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators Ren, Xiao bin Ren, Kun Zhang, Ying Ming, Cheng guo Han, Qun Beilstein J Nanotechnol Full Research Paper A symmetry-breaking nanostructure is proposed to achieve multiple Fano resonances. The nanostructure consists of an asymmetric ring resonator coupled to a plasmonic waveguide. The broken symmetry is introduced by deviating the centers of regular ring. New resonant modes that are not accessible through a regular symmetric ring cavity are excited. Thus, one asymmetric cavity can provide more than one resonant mode with the same mode order. As a result, the interval of Fano resonances is greatly reduced. By combining different rings with different degrees of asymmetry, multiple Fano resonances are generated. Those Fano resonances have different dependences on structural parameters due to their different physical origin. The resonance frequency and resonance peak number can be arbitrarily adjusted by changing the degree of asymmetry. This research may provide new opportunities to design on-chip optical devices with great tuning performance. Beilstein-Institut 2019-12-11 /pmc/articles/PMC6941448/ /pubmed/31921524 http://dx.doi.org/10.3762/bjnano.10.236 Text en Copyright © 2019, Ren et al. https://creativecommons.org/licenses/by/4.0https://www.beilstein-journals.org/bjnano/termsThis is an Open Access article under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0). Please note that the reuse, redistribution and reproduction in particular requires that the authors and source are credited. The license is subject to the Beilstein Journal of Nanotechnology terms and conditions: (https://www.beilstein-journals.org/bjnano/terms) |
spellingShingle | Full Research Paper Ren, Xiao bin Ren, Kun Zhang, Ying Ming, Cheng guo Han, Qun Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators |
title | Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators |
title_full | Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators |
title_fullStr | Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators |
title_full_unstemmed | Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators |
title_short | Multiple Fano resonances with flexible tunablity based on symmetry-breaking resonators |
title_sort | multiple fano resonances with flexible tunablity based on symmetry-breaking resonators |
topic | Full Research Paper |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6941448/ https://www.ncbi.nlm.nih.gov/pubmed/31921524 http://dx.doi.org/10.3762/bjnano.10.236 |
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