Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating

Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating

We propose a novel plasmonic Bragg reflector (PBR) based on graphene with multiple-step silicon structure. The monolayer graphene bears locally variable optical properties by modulation of electric fields, and the periodical change of effective refractive index on graphene can be obtained by externa...

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Main Authors: Qian, Qinglu, Liang, Youjian, Liang, Yue, Shao, Hongyan, Zhang, Menglai, Xiao, Ting, Wang, Jicheng
Format: Online
Language:English
Published: MDPI 2016
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5191020/
id pubmed-5191020
recordtype oai_dc
spelling pubmed-51910202017-01-03 Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating Qian, Qinglu Liang, Youjian Liang, Yue Shao, Hongyan Zhang, Menglai Xiao, Ting Wang, Jicheng Article We propose a novel plasmonic Bragg reflector (PBR) based on graphene with multiple-step silicon structure. The monolayer graphene bears locally variable optical properties by modulation of electric fields, and the periodical change of effective refractive index on graphene can be obtained by external bias voltage in the mid-infrared region. Through patterning the PBR units into multiple-step structures, we can decrease the insertion loss and suppress the rippling in transmission spectra. By introducing the defect into the multiple-step PBRs, the multiple resonance modes are formed inside the stopband by increasing the step number. This work may pave the ways for the further development of ultra-compact low-cost hyperspectral sensors in the mid-infrared region. MDPI 2016-12-01 /pmc/articles/PMC5191020/ /pubmed/27916930 http://dx.doi.org/10.3390/s16122039 Text en © 2016 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC-BY) license (http://creativecommons.org/licenses/by/4.0/).
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Qian, Qinglu
Liang, Youjian
Liang, Yue
Shao, Hongyan
Zhang, Menglai
Xiao, Ting
Wang, Jicheng
spellingShingle Qian, Qinglu
Liang, Youjian
Liang, Yue
Shao, Hongyan
Zhang, Menglai
Xiao, Ting
Wang, Jicheng
Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating
author_facet Qian, Qinglu
Liang, Youjian
Liang, Yue
Shao, Hongyan
Zhang, Menglai
Xiao, Ting
Wang, Jicheng
author_sort Qian, Qinglu
title Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating
title_short Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating
title_full Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating
title_fullStr Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating
title_full_unstemmed Tunable Multiple-Step Plasmonic Bragg Reflectors with Graphene-Based Modulated Grating
title_sort tunable multiple-step plasmonic bragg reflectors with graphene-based modulated grating
description We propose a novel plasmonic Bragg reflector (PBR) based on graphene with multiple-step silicon structure. The monolayer graphene bears locally variable optical properties by modulation of electric fields, and the periodical change of effective refractive index on graphene can be obtained by external bias voltage in the mid-infrared region. Through patterning the PBR units into multiple-step structures, we can decrease the insertion loss and suppress the rippling in transmission spectra. By introducing the defect into the multiple-step PBRs, the multiple resonance modes are formed inside the stopband by increasing the step number. This work may pave the ways for the further development of ultra-compact low-cost hyperspectral sensors in the mid-infrared region.
publisher MDPI
publishDate 2016
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5191020/
_version_ 1613831808890175488

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