All-dielectric meta-material resonance device with high quality factor

A high quality factor, resonant device technology, applied in the field of metamaterials, can solve the problem of few design methods, and achieve the effect of high resonance quality factor and simple structure

Active Publication Date: 2017-08-11
CHINA JILIANG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are still few design methods for all-dielectric metama

Method used

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  • All-dielectric meta-material resonance device with high quality factor
  • All-dielectric meta-material resonance device with high quality factor
  • All-dielectric meta-material resonance device with high quality factor

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Embodiment Construction

[0014] The structure of the all-dielectric metamaterial resonator device of the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0015] Such as Figure 1 to Figure 3 As shown, the all-dielectric metamaterial resonator device of the present invention includes a base 21 and a two-dimensional periodic dielectric resonator unit located on the upper surface of the base 21 . The base 21 is made of dielectric material. The so-called two-dimensional periodic dielectric resonant unit is composed of multiple dielectric resonant units according to two-dimensional periodic distribution (see figure 2 ). In the present invention, each dielectric resonance unit is a dielectric strip 12, and the cross section of the dielectric strip 12 is rectangular. Specifically, as Figure 1 to Figure 3 As shown, if a represents the length of the dielectric strip 12, b represents the width of the dielectric strip 12, and h represents the heig...

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Abstract

The invention discloses an all-dielectric meta-material resonance device with high quality factor. The device comprises a substrate and two-dimensional periodic dielectric resonance units on the upper surface of the substrate. The substrate is made of a dielectric material. Each dielectric resonance unit is a dielectric bar with a rectangular cross section. The length, width and height of each dielectric bar meet the following conditions: a>=2*b, a>=2.5*h, and 1.6*a<=lambda<=2.4*a, wherein a, b and h respectively represents the length, width and height of each dielectric bar, lambda is the resonance center wavelength of the resonance device, and the dielectric constant of the dielectric resonance units is larger than that of the substrate. When electromagnetic wave is incident in a direction perpendicular to the upper surfaces of the dielectric bars and the electric field polarization direction is perpendicular to the first sides of the dielectric bars, Mie electro-magnetic resonance can be produced, and an extremely high Q value can be achieved.

Description

technical field [0001] The invention relates to a resonance device and belongs to the technical field of metamaterials. Background technique [0002] All-dielectric metamaterial is a kind of artificially designed sub-wavelength periodic dielectric resonant structure material. Because all-dielectric metamaterials can easily manipulate the response of electromagnetic waves and have extremely low loss, and can obtain characteristics that cannot be obtained by natural media, they have been widely valued. At present, it has very important applications in the fields of biosensing, invisibility clothing, negative refractive index, and photonic devices. [0003] At present, for metal metamaterial resonators, due to the metal ohmic loss and resonance radiation loss, the Q value (quality factory, quality factor, the center frequency of the resonant peak divided by the width of the resonant peak, and the resonant width is calculated by FWHM (FullWidth at Half Maxium)) become a very d...

Claims

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Application Information

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IPC IPC(8): G02B1/00H01P7/10
CPCG02B1/002H01P7/10
Inventor 洪治隋传帅李向军郎婷婷井绪峰韩冰心
Owner CHINA JILIANG UNIV
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