High-quality trapped modes in all-dielectric metamaterials

A planar all-dielectric metamaterial made of a double-periodic lattice whose unit cell consists of a single subwavelength dielectric particle having the form of a disk possessing a penetrating hole is considered. The resonant states in the transmitted spectra of the metamaterial are identified consi...

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Bibliographic Details
Published in:Optics express 2018-02, Vol.26 (3), p.2905-2916
Main Authors: Tuz, Vladimir R, Khardikov, Vyacheslav V, Kupriianov, Anton S, Domina, Kateryna L, Xu, Su, Wang, Hai, Sun, Hong-Bo
Format: Article
Language:English
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Summary:A planar all-dielectric metamaterial made of a double-periodic lattice whose unit cell consists of a single subwavelength dielectric particle having the form of a disk possessing a penetrating hole is considered. The resonant states in the transmitted spectra of the metamaterial are identified considering modes inherent to the individual cylindrical dielectric resonator. A correlation between the asymmetry in the particle's geometry, which arises from the off-centered displacement of the hole and the formation of the Mie-type and trapped modes, is established. The advantages of using a coaxial-sector notch instead of a round hole for the trapped mode excitation are explained.
ISSN:1094-4087
1094-4087
DOI:10.1364/OE.26.002905