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Metamaterial resonant device with adjustable guided mode resonant quality factor

A resonance device and quality factor technology, applied in the field of metamaterials, can solve the problems of low resonance peak Q value, resonant peak width and amplitude of the guided mode resonance peak, etc., and achieve the effect of high Q value

Inactive Publication Date: 2016-05-11
CHINA JILIANG UNIV
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  • Abstract
  • Description
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  • 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 effects of different structures are quite different, which affects the results of the peak width and amplitude of the resonant peak of the guided mode.
The applicant invented a resonance device, which can adjust the resonance peak of the guided mode and solve the technical problem that the Q value of the resonance peak in the metamaterial is not high

Method used

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  • Metamaterial resonant device with adjustable guided mode resonant quality factor
  • Metamaterial resonant device with adjustable guided mode resonant quality factor
  • Metamaterial resonant device with adjustable guided mode resonant quality factor

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Embodiment Construction

[0022] As mentioned in the background section, how to improve the resonance quality factor Q has become a major problem to be solved in this field.

[0023] In view of this, an embodiment of the present invention proposes a metamaterial resonator device with adjustable guided mode resonance quality factor, including:

[0024] 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;

[0025] A grating-like structure located on the surface of the slab waveguide.

[0026] The grating-like structure is composed of a metamaterial resonant unit, the resonant unit includes a plurality of metal resonant rings, including at least a first metal resonant ring and a second ...

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Abstract

The invention discloses a metamaterial resonant device with an adjustable guided mode resonant quality factor. The metamaterial resonant device comprises a flat waveguide and a grating-like structure, wherein the grating-like structure is arranged on the surface of the flat waveguide and comprises a metamaterial material resonant unit, the metamaterial material resonant unit must comprise at least two metal resonant rings, and the edge lengths of the at least two metal resonant rings are not equal. The grating modulation depth can be adjusted by adjusting the edge lengths of the metal resonant rings, thus, a relatively high quality factor can be acquired. Moreover, through mutual effect between a guided mode and a dipole, electromagnetically induced transparency can be generated.

Description

technical field [0001] The invention relates to the technical field of metamaterials, in particular to a resonance device for adjusting the quality factor of metamaterial guided mode resonance. Background technique [0002] Q value (quality factor, quality factor) is an important parameter of the resonant peak, which is defined as the center frequency of the resonant peak divided by the resonant peak width FWHM (FullWidthatHalfMaxium). This is of great significance for practical applications. In areas requiring high sensitivity, such as ultra-high-sensitivity sensors and ultra-narrow-band filters, a high Q value is very important and necessary. With the deepening of research, researchers have proposed methods such as EIT, asymmetric Fano, and all-dielectric to adjust the resonance peak width, but the highest quality factor (Q value) is only a few hundred, and most of them are only a few dozen or less. , thus limiting the application and development of metamaterials. [000...

Claims

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Application Information

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IPC IPC(8): H01P7/00G02B6/124
CPCG02B6/124H01P7/00
Inventor 洪治俞禛陈航孙雅茹
Owner CHINA JILIANG UNIV
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