Tunable Infrared Optical Switch Based on Vanadium Dioxide

A tunable infrared optical switch based on a plasmonic structure consisting of aluminum nanoarrays with a thin film of vanadium dioxide is proposed. This optical switch can realize arbitrary wavelength-selective optical switching in the mid-infrared region by altering the radii of the aluminum nanoa...

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Autores principales:	Qi Wang, Shijie Zhang, Chen Wang, Rui Li, Tianhan Cai, Dawei Zhang
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	vanadium dioxide localized surface plasmon resonance optical switch mid-infrared Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/d29a6599c226443ca9807623521a3b89
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spelling	oai:doaj.org-article:d29a6599c226443ca9807623521a3b892021-11-25T18:31:27ZTunable Infrared Optical Switch Based on Vanadium Dioxide10.3390/nano111129882079-4991https://doaj.org/article/d29a6599c226443ca9807623521a3b892021-11-01T00:00:00Zhttps://www.mdpi.com/2079-4991/11/11/2988https://doaj.org/toc/2079-4991A tunable infrared optical switch based on a plasmonic structure consisting of aluminum nanoarrays with a thin film of vanadium dioxide is proposed. This optical switch can realize arbitrary wavelength-selective optical switching in the mid-infrared region by altering the radii of the aluminum nanoarrays. Furthermore, since vanadium dioxide transforms from its low-temperature insulator phase to a high-temperature metallic phase when heated or applied voltage, the optical switch can achieve two-way switching of its “ON” and “OFF” modes. Finite-difference time-domain software is used to simulate the performance of the proposed infrared optical switch. Simulation results show that the switch offers excellent optical performances, that the modulation depth can reach up to 99.4%, and that the extinction ratio exceeds −22.16 dB. In addition, the phase transition time of vanadium dioxide is on the femtosecond scale, which means that this optical switch based on a vanadium dioxide thin film can be used for ultrafast switching.Qi WangShijie ZhangChen WangRui LiTianhan CaiDawei ZhangMDPI AGarticlevanadium dioxidelocalized surface plasmon resonanceoptical switchmid-infraredChemistryQD1-999ENNanomaterials, Vol 11, Iss 2988, p 2988 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	vanadium dioxide localized surface plasmon resonance optical switch mid-infrared Chemistry QD1-999
spellingShingle	vanadium dioxide localized surface plasmon resonance optical switch mid-infrared Chemistry QD1-999 Qi Wang Shijie Zhang Chen Wang Rui Li Tianhan Cai Dawei Zhang Tunable Infrared Optical Switch Based on Vanadium Dioxide
description	A tunable infrared optical switch based on a plasmonic structure consisting of aluminum nanoarrays with a thin film of vanadium dioxide is proposed. This optical switch can realize arbitrary wavelength-selective optical switching in the mid-infrared region by altering the radii of the aluminum nanoarrays. Furthermore, since vanadium dioxide transforms from its low-temperature insulator phase to a high-temperature metallic phase when heated or applied voltage, the optical switch can achieve two-way switching of its “ON” and “OFF” modes. Finite-difference time-domain software is used to simulate the performance of the proposed infrared optical switch. Simulation results show that the switch offers excellent optical performances, that the modulation depth can reach up to 99.4%, and that the extinction ratio exceeds −22.16 dB. In addition, the phase transition time of vanadium dioxide is on the femtosecond scale, which means that this optical switch based on a vanadium dioxide thin film can be used for ultrafast switching.
format	article
author	Qi Wang Shijie Zhang Chen Wang Rui Li Tianhan Cai Dawei Zhang
author_facet	Qi Wang Shijie Zhang Chen Wang Rui Li Tianhan Cai Dawei Zhang
author_sort	Qi Wang
title	Tunable Infrared Optical Switch Based on Vanadium Dioxide
title_short	Tunable Infrared Optical Switch Based on Vanadium Dioxide
title_full	Tunable Infrared Optical Switch Based on Vanadium Dioxide
title_fullStr	Tunable Infrared Optical Switch Based on Vanadium Dioxide
title_full_unstemmed	Tunable Infrared Optical Switch Based on Vanadium Dioxide
title_sort	tunable infrared optical switch based on vanadium dioxide
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/d29a6599c226443ca9807623521a3b89
work_keys_str_mv	AT qiwang tunableinfraredopticalswitchbasedonvanadiumdioxide AT shijiezhang tunableinfraredopticalswitchbasedonvanadiumdioxide AT chenwang tunableinfraredopticalswitchbasedonvanadiumdioxide AT ruili tunableinfraredopticalswitchbasedonvanadiumdioxide AT tianhancai tunableinfraredopticalswitchbasedonvanadiumdioxide AT daweizhang tunableinfraredopticalswitchbasedonvanadiumdioxide
_version_	1718411046433062912

Tunable Infrared Optical Switch Based on Vanadium Dioxide

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