Dual-functional coding metasurfaces made of anisotropic all-dielectric resonators

Linda Shao, Malin Premaratne, Weiren Zhu

Research output: Contribution to journalArticleResearchpeer-review

Abstract

Digital coding metasurfaces, composed of only two types of unit cells with opposite phase responses (0 and π) that can map to the usual binary elements '0' and '1', are capable of generating coded pulsed sequences of electromagnetic waves. In this paper, we present a generic extensible strategy for designing dual-functional anisotropic coding metasurfaces based on all-dielectric resonators. The polarization-dependent beam manipulations are achieved via encoding the metasurfaces with different coding sequences in the two orthogonal polarizations of the electromagnetic wave propagating through the surface. As proof of concept, we show it is possible to achieve line focusing and point focusing in a single coding metasurface when illuminated by the x-or y-polarized electromagnetic waves. We also present anisotropic coding metasurfaces for realizing multi-beam generation and polarization-selected mirror/diffuse reflection. The near-field distributions and far-field scattering patterns extracted from full-wave simulations are presented to show the multiple functions of the metasurfaces and good conformance with theoretical predictions.

Original languageEnglish
Article number8680008
Pages (from-to)45716-45722
Number of pages7
JournalIEEE Access
Volume7
DOIs
Publication statusPublished - 2019

Keywords

  • All-dielectric
  • anisotropic
  • coding metasurface
  • electromagnetic wave manipulation

Cite this

@article{4bf3fd58e54243819db6a2cde2d6e670,
title = "Dual-functional coding metasurfaces made of anisotropic all-dielectric resonators",
abstract = "Digital coding metasurfaces, composed of only two types of unit cells with opposite phase responses (0 and π) that can map to the usual binary elements '0' and '1', are capable of generating coded pulsed sequences of electromagnetic waves. In this paper, we present a generic extensible strategy for designing dual-functional anisotropic coding metasurfaces based on all-dielectric resonators. The polarization-dependent beam manipulations are achieved via encoding the metasurfaces with different coding sequences in the two orthogonal polarizations of the electromagnetic wave propagating through the surface. As proof of concept, we show it is possible to achieve line focusing and point focusing in a single coding metasurface when illuminated by the x-or y-polarized electromagnetic waves. We also present anisotropic coding metasurfaces for realizing multi-beam generation and polarization-selected mirror/diffuse reflection. The near-field distributions and far-field scattering patterns extracted from full-wave simulations are presented to show the multiple functions of the metasurfaces and good conformance with theoretical predictions.",
keywords = "All-dielectric, anisotropic, coding metasurface, electromagnetic wave manipulation",
author = "Linda Shao and Malin Premaratne and Weiren Zhu",
year = "2019",
doi = "10.1109/ACCESS.2019.2908830",
language = "English",
volume = "7",
pages = "45716--45722",
journal = "IEEE Access",
issn = "2169-3536",
publisher = "IEEE, Institute of Electrical and Electronics Engineers",

}

Dual-functional coding metasurfaces made of anisotropic all-dielectric resonators. / Shao, Linda; Premaratne, Malin; Zhu, Weiren.

In: IEEE Access, Vol. 7, 8680008, 2019, p. 45716-45722.

Research output: Contribution to journalArticleResearchpeer-review

TY - JOUR

T1 - Dual-functional coding metasurfaces made of anisotropic all-dielectric resonators

AU - Shao, Linda

AU - Premaratne, Malin

AU - Zhu, Weiren

PY - 2019

Y1 - 2019

N2 - Digital coding metasurfaces, composed of only two types of unit cells with opposite phase responses (0 and π) that can map to the usual binary elements '0' and '1', are capable of generating coded pulsed sequences of electromagnetic waves. In this paper, we present a generic extensible strategy for designing dual-functional anisotropic coding metasurfaces based on all-dielectric resonators. The polarization-dependent beam manipulations are achieved via encoding the metasurfaces with different coding sequences in the two orthogonal polarizations of the electromagnetic wave propagating through the surface. As proof of concept, we show it is possible to achieve line focusing and point focusing in a single coding metasurface when illuminated by the x-or y-polarized electromagnetic waves. We also present anisotropic coding metasurfaces for realizing multi-beam generation and polarization-selected mirror/diffuse reflection. The near-field distributions and far-field scattering patterns extracted from full-wave simulations are presented to show the multiple functions of the metasurfaces and good conformance with theoretical predictions.

AB - Digital coding metasurfaces, composed of only two types of unit cells with opposite phase responses (0 and π) that can map to the usual binary elements '0' and '1', are capable of generating coded pulsed sequences of electromagnetic waves. In this paper, we present a generic extensible strategy for designing dual-functional anisotropic coding metasurfaces based on all-dielectric resonators. The polarization-dependent beam manipulations are achieved via encoding the metasurfaces with different coding sequences in the two orthogonal polarizations of the electromagnetic wave propagating through the surface. As proof of concept, we show it is possible to achieve line focusing and point focusing in a single coding metasurface when illuminated by the x-or y-polarized electromagnetic waves. We also present anisotropic coding metasurfaces for realizing multi-beam generation and polarization-selected mirror/diffuse reflection. The near-field distributions and far-field scattering patterns extracted from full-wave simulations are presented to show the multiple functions of the metasurfaces and good conformance with theoretical predictions.

KW - All-dielectric

KW - anisotropic

KW - coding metasurface

KW - electromagnetic wave manipulation

UR - http://www.scopus.com/inward/record.url?scp=85064564857&partnerID=8YFLogxK

U2 - 10.1109/ACCESS.2019.2908830

DO - 10.1109/ACCESS.2019.2908830

M3 - Article

VL - 7

SP - 45716

EP - 45722

JO - IEEE Access

JF - IEEE Access

SN - 2169-3536

M1 - 8680008

ER -