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Multiple switching based on the toroidal and trapped dipole magnetic responses in all-dielectric metamaterial

Multiple switching based on the toroidal and trapped dipole magnetic responses in all-dielectric... Abstract.We design and numerically investigate an all-dielectric metamaterial, consisting of silicon ring and disk with a missing wedge-shaped slice lying on a silica substrate that realizes multiple switching based on toroidal and trapped dipole magnetic responses. Such two responses can be dynamically switched on and off simultaneously only through changing polarization of incident light, and the direction of toroidal dipole can be rotated 90 deg in two separate frequency regimes. Further, the maximum values of amplitude modulation depth around magnetic responses almost reach 100%, respectively. Multiple switching based on such magnetic responses shows potential applications in active filters, sensors, and switching. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Journal of Nanophotonics SPIE

Multiple switching based on the toroidal and trapped dipole magnetic responses in all-dielectric metamaterial

Journal of Nanophotonics , Volume 16 (2) – Apr 1, 2022

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References (32)

Publisher
SPIE
Copyright
© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE)
ISSN
1934-2608
eISSN
1934-2608
DOI
10.1117/1.jnp.16.020501
Publisher site
See Article on Publisher Site

Abstract

Abstract.We design and numerically investigate an all-dielectric metamaterial, consisting of silicon ring and disk with a missing wedge-shaped slice lying on a silica substrate that realizes multiple switching based on toroidal and trapped dipole magnetic responses. Such two responses can be dynamically switched on and off simultaneously only through changing polarization of incident light, and the direction of toroidal dipole can be rotated 90 deg in two separate frequency regimes. Further, the maximum values of amplitude modulation depth around magnetic responses almost reach 100%, respectively. Multiple switching based on such magnetic responses shows potential applications in active filters, sensors, and switching.

Journal

Journal of NanophotonicsSPIE

Published: Apr 1, 2022

Keywords: metamaterial; trapped mode; toroidal mode; switching

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