Cargando…

Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range

Recently, terahertz (THz) wireless communication has been widely investigated as the future prospect of wireless network architecture. However, most of the natural existing materials are inapplicable for THz devices, which hinder their further development. To promote the integration and channel capa...

Descripción completa

Detalles Bibliográficos
Autores principales: Jiang, Xiaoqiang, Fan, Wenhui, Qin, Chong, Chen, Xu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8624985/
https://www.ncbi.nlm.nih.gov/pubmed/34835660
http://dx.doi.org/10.3390/nano11112895
_version_ 1784606307202891776
author Jiang, Xiaoqiang
Fan, Wenhui
Qin, Chong
Chen, Xu
author_facet Jiang, Xiaoqiang
Fan, Wenhui
Qin, Chong
Chen, Xu
author_sort Jiang, Xiaoqiang
collection PubMed
description Recently, terahertz (THz) wireless communication has been widely investigated as the future prospect of wireless network architecture. However, most of the natural existing materials are inapplicable for THz devices, which hinder their further development. To promote the integration and channel capacity of the THz wireless communication systems, an ultrabroadband polarization conversion metasurface for efficient multi-functional wavefront manipulation is proposed. The designed metasurface is composed of an arrow-type structure sandwiched by a pair of orthogonal gratings, which can induce the Fabry-Pérot-like cavity for improving the transmission. Simulated results indicate that the transmission coefficient of the cross-polarization metasurface is higher than 90% from 0.73 THz to 2.24 THz, and the corresponding polarization conversion ratio is greater than 99.5%. Moreover, the phase coverage of 0–2π at operation frequency can be easily obtained by altering the geometric parameter of the metasurface. To demonstrate the concept of wavefront manipulation, anomalous refraction, focusing metalens, and vortex beam generation are investigated in detail. All of these applications exhibit a remarkable performance of the proposed metasurface that has great potential in prompting the efficient, broadband and compact systems for THz wireless communication.
format Online
Article
Text
id pubmed-8624985
institution National Center for Biotechnology Information
language English
publishDate 2021
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-86249852021-11-27 Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range Jiang, Xiaoqiang Fan, Wenhui Qin, Chong Chen, Xu Nanomaterials (Basel) Article Recently, terahertz (THz) wireless communication has been widely investigated as the future prospect of wireless network architecture. However, most of the natural existing materials are inapplicable for THz devices, which hinder their further development. To promote the integration and channel capacity of the THz wireless communication systems, an ultrabroadband polarization conversion metasurface for efficient multi-functional wavefront manipulation is proposed. The designed metasurface is composed of an arrow-type structure sandwiched by a pair of orthogonal gratings, which can induce the Fabry-Pérot-like cavity for improving the transmission. Simulated results indicate that the transmission coefficient of the cross-polarization metasurface is higher than 90% from 0.73 THz to 2.24 THz, and the corresponding polarization conversion ratio is greater than 99.5%. Moreover, the phase coverage of 0–2π at operation frequency can be easily obtained by altering the geometric parameter of the metasurface. To demonstrate the concept of wavefront manipulation, anomalous refraction, focusing metalens, and vortex beam generation are investigated in detail. All of these applications exhibit a remarkable performance of the proposed metasurface that has great potential in prompting the efficient, broadband and compact systems for THz wireless communication. MDPI 2021-10-29 /pmc/articles/PMC8624985/ /pubmed/34835660 http://dx.doi.org/10.3390/nano11112895 Text en © 2021 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Jiang, Xiaoqiang
Fan, Wenhui
Qin, Chong
Chen, Xu
Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_full Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_fullStr Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_full_unstemmed Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_short Ultra-Broadband Polarization Conversion Metasurface with High Transmission for Efficient Multi-Functional Wavefront Manipulation in the Terahertz Range
title_sort ultra-broadband polarization conversion metasurface with high transmission for efficient multi-functional wavefront manipulation in the terahertz range
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8624985/
https://www.ncbi.nlm.nih.gov/pubmed/34835660
http://dx.doi.org/10.3390/nano11112895
work_keys_str_mv AT jiangxiaoqiang ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange
AT fanwenhui ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange
AT qinchong ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange
AT chenxu ultrabroadbandpolarizationconversionmetasurfacewithhightransmissionforefficientmultifunctionalwavefrontmanipulationintheterahertzrange