15 April 2022 Multiple switching based on the toroidal and trapped dipole magnetic responses in all-dielectric metamaterial
Jinfeng Yang, Jifang Shang
Author Affiliations +
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.

© 2022 Society of Photo-Optical Instrumentation Engineers (SPIE) 1934-2608/2022/$28.00 © 2022 SPIE
Jinfeng Yang and Jifang Shang "Multiple switching based on the toroidal and trapped dipole magnetic responses in all-dielectric metamaterial," Journal of Nanophotonics 16(2), 020501 (15 April 2022). https://doi.org/10.1117/1.JNP.16.020501
Received: 9 December 2021; Accepted: 29 March 2022; Published: 15 April 2022
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KEYWORDS
Magnetism

Metamaterials

Switching

Polarization

Amplitude modulation

Dielectric polarization

Dielectrics

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