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A compact closed-loop resonator based on artificial surface plasmons

An artificial surface plasmon and resonator technology, applied in the direction of resonators, waveguide devices, electrical components, etc., can solve the problems of weak resonance strength, large electrical size, low quality factor, etc., and achieve high resonance strength and high resonance quality factor, the effect of high sensitivity

Active Publication Date: 2021-05-04
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the existing artificial surface plasmon resonance structure generally forms an equivalent current loop in the inner ring part of the structure, so the electrical size is often larger, the quality factor is lower, and the resonance strength is weaker.

Method used

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  • A compact closed-loop resonator based on artificial surface plasmons
  • A compact closed-loop resonator based on artificial surface plasmons
  • A compact closed-loop resonator based on artificial surface plasmons

Examples

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Embodiment Construction

[0021] The present invention will be further described in detail below through the specific examples, the following examples are only descriptive, not restrictive, and cannot limit the protection scope of the present invention with this.

[0022] Such as figure 1 As shown, a compact closed-loop resonator based on surface plasmons includes a ring 1 and a hollow metal grating 2, and the metal grating 2 includes more than one grating 21, and one end of the grating 21 is connected to the ring 1 The inner circle of the metal grating is connected, the other end points to the direction of the center of the ring 1, and one end of the grating pointing to the center of the ring 1 forms a hollow circular gap 22 of the metal grating 2, that is to say, the grating 21 extends a certain distance toward the center of the ring. length, and leave a small circular gap near the center of the circle to form a hollow circular gap 22. The metal grating 2 includes more than one grating, and the gra...

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PUM

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Abstract

The present invention provides a compact closed-loop resonator based on artificial surface plasmons, including a ring 1 and a metal grating 2, the metal grating 2 is arranged on the ring 1, and one end of the metal grating 2 is connected to the ring 1 The inner circles of the two are connected, and the other end extends a certain length toward the center of the circle, leaving a circular gap around the center of the circle. By changing the structural parameters of the ring 1 and the metal grating 2, the frequency point, intensity and Q value of each resonance mode can be adjusted. The resonator has small electrical size, high resonance strength, high sensitivity and high resonance quality factor. Moreover, the resonator has a simple structure, is easy to process, and can work in terahertz, microwave, and millimeter wave frequency bands through equal scaling.

Description

technical field [0001] The invention is a ring resonator, especially a compact closed-loop resonator based on artificial surface plasmons. Background technique [0002] Surface plasmons are surface electromagnetic waves that are formed under certain excitation conditions and propagate along the surface of metals and dielectrics. They can limit the energy of electromagnetic fields in the deep sub-wavelength range, so they are not limited by the diffraction limit. They are used in integrated circuits, communications There are huge application prospects in technology and sensors. [0003] However, surface plasmons in nature only exist in the optical band. In order to realize surface plasmons in lower frequency bands (terahertz, microwave, millimeter wave), artificial surface plasmon polaritons have been proposed. Document 1X.P.Shen and T.J.Cui, "Ultrathin plasmonic metamaterial for spoof localized surfaceplasmons", Laser Photonics Rev.8, 137 (2014), discloses a ring resonator,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P7/08H01P1/20H01P1/203
CPCH01P1/20H01P1/203H01P7/08H01P7/082
Inventor 鲍迪蒋卫祥崔铁军
Owner SOUTHEAST UNIV
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