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Polarization-insensitive meta-material resonance apparatus with adjustable guided-mode resonance quality factor

A polarization-insensitive, resonant device technology, applied in the field of metamaterials, can solve problems affecting the peak width and amplitude of the resonant peak of the guided mode

Inactive Publication Date: 2016-06-01
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the complexity of the metamaterial structure and the diversity of parameters, the grating effect of different structures is quite different, which affects the peak width and amplitude of the resonant peak of the guided mode.

Method used

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  • Polarization-insensitive meta-material resonance apparatus with adjustable guided-mode resonance quality factor
  • Polarization-insensitive meta-material resonance apparatus with adjustable guided-mode resonance quality factor
  • Polarization-insensitive meta-material resonance apparatus with adjustable guided-mode resonance quality factor

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Embodiment Construction

[0023] As mentioned in the background section, how to improve the resonance quality factor and make it polarization-insensitive has become an urgent technical problem to be solved by those skilled in the art.

[0024] In view of this, an embodiment of the present invention provides a polarization-insensitive guided mode resonance quality factor adjustable metamaterial resonance device, including:

[0025] A slab waveguide, the slab waveguide includes a first dielectric layer, a second dielectric layer, and a third dielectric layer located between the first dielectric layer and the second dielectric layer, wherein the first dielectric layer and the second dielectric layer The refractive indices of the layers are all smaller than the refractive index of the third medium layer;

[0026] A metamaterial composed of a metal resonant unit located on the surface of the slab waveguide, the resonant unit includes four metal resonant rings, and the distance between adjacent resonant ring...

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Abstract

The invention discloses a polarization-insensitive meta-material resonance apparatus with an adjustable guided-mode resonance quality factor. The polarization-insensitive meta-material resonance apparatus comprises a planar waveguide and a meta-material unit that is arranged on the planar waveguide and is formed by a metal resonance unit. The meta-material resonance unit having a complex structure includes four metal resonance rings, wherein the four metal resonance rings is symmetric about the center of the resonance unit; and side lengths of the first metal resonance ring and the second metal resonance ring are not equal. Therefore, the resonance apparatus is not sensitive to the polarization. Besides, with the similar raster diffraction effect of the meta-material cladding layer, guided-mode resonance can be realized; and when the sizes of the metal resonance rings are changed, the quality factor of the guided-mode resonance can be adjusted and the mutual effect of the guided mode and the surface mode can be controlled, thereby realizing electromagnetic induction transparency.

Description

technical field [0001] The invention relates to the technical field of metamaterials, in particular to a metamaterial resonance device. Background technique [0002] Metamaterials are artificially designed subwavelength periodic metallic resonant structure materials. Because artificially designed metamaterials can easily manipulate the response of electromagnetic waves and obtain properties that cannot be obtained by natural media (such as negative refraction, superlenses, invisibility cloaks, etc.), they have attracted widespread attention. In particular, it has very important applications in the fields of planar metamaterial devices, sensing and spectral imaging, which have been widely reported. However, many metamaterial structures are polarization sensitive. [0003] The grating guided mode resonance is formed due to the coupling of electromagnetic waves into the waveguide, and its energy is confined in the waveguide, which overcomes the ohmic loss and radiation loss o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01Q15/00
CPCH01Q15/0086
Inventor 洪治陈航俞禛孙雅茹
Owner CHINA JILIANG UNIV
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