Journal
OPTICS EXPRESS
Volume 26, Issue 3, Pages 2905-2916Publisher
OPTICAL SOC AMER
DOI: 10.1364/OE.26.002905
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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. (C) 2018 Optical Society of America under the terms of the OSA Open Access Publishing Agreement
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