Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating

We propose a plasmonic Bragg reflector (PBR) composed of a single-layer graphene-based silicon grating and numerically study its performance. An external voltage gating has been applied to graphene to tune its optical conductivity. It is demonstrated that SPP modes on graphene exhibit a stopband aro...

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Autores principales: Song, Ci, Xia, Xiushan, Hu, Zheng-Da, Liang, Youjian, Wang, Jicheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Springer US 2016
Materias:
Nano Express
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5031573/
https://www.ncbi.nlm.nih.gov/pubmed/27654279
http://dx.doi.org/10.1186/s11671-016-1633-0
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author Song, Ci
Xia, Xiushan
Hu, Zheng-Da
Liang, Youjian
Wang, Jicheng
author_facet Song, Ci
Xia, Xiushan
Hu, Zheng-Da
Liang, Youjian
Wang, Jicheng
author_sort Song, Ci
collection PubMed
description We propose a plasmonic Bragg reflector (PBR) composed of a single-layer graphene-based silicon grating and numerically study its performance. An external voltage gating has been applied to graphene to tune its optical conductivity. It is demonstrated that SPP modes on graphene exhibit a stopband around the Bragg wavelengths. By introducing a nano-cavity into the PBR, a defect resonance mode is formed inside the stopband. We further design multi-defect PBR to adjust the characteristics of transmission spectrum. In addition, through patterning the PBR unit into multi-step structure, we lower the insertion loss and suppress the rippling in transmission spectra. The finite element method (FEM) has been utilized to perform the simulation work.
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spelling pubmed-50315732016-10-03 Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating Song, Ci Xia, Xiushan Hu, Zheng-Da Liang, Youjian Wang, Jicheng Nanoscale Res Lett Nano Express We propose a plasmonic Bragg reflector (PBR) composed of a single-layer graphene-based silicon grating and numerically study its performance. An external voltage gating has been applied to graphene to tune its optical conductivity. It is demonstrated that SPP modes on graphene exhibit a stopband around the Bragg wavelengths. By introducing a nano-cavity into the PBR, a defect resonance mode is formed inside the stopband. We further design multi-defect PBR to adjust the characteristics of transmission spectrum. In addition, through patterning the PBR unit into multi-step structure, we lower the insertion loss and suppress the rippling in transmission spectra. The finite element method (FEM) has been utilized to perform the simulation work. Springer US 2016-09-22 /pmc/articles/PMC5031573/ /pubmed/27654279 http://dx.doi.org/10.1186/s11671-016-1633-0 Text en © The Author(s). 2016 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided 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.
spellingShingle Nano Express
Song, Ci
Xia, Xiushan
Hu, Zheng-Da
Liang, Youjian
Wang, Jicheng
Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating
title Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating
title_full Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating
title_fullStr Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating
title_full_unstemmed Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating
title_short Characteristics of Plasmonic Bragg Reflectors with Graphene-Based Silicon Grating
title_sort characteristics of plasmonic bragg reflectors with graphene-based silicon grating
topic Nano Express
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5031573/
https://www.ncbi.nlm.nih.gov/pubmed/27654279
http://dx.doi.org/10.1186/s11671-016-1633-0
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