Dielectric resonator based on equivalent localized surface plasmon polaritons and working method thereof

A surface plasmon, dielectric resonator technology, applied in the field of resonators, can solve the problem of large volume of the resonator, and achieve the effect of reducing the volume

Inactive Publication Date: 2019-05-14
NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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  • Abstract
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Problems solved by technology

[0005] The technical problem to be solved by the present invention is to provide a dielectric resonator based on equivalent localized surface plasmons and its working method, to solve the probl

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  • Dielectric resonator based on equivalent localized surface plasmon polaritons and working method thereof
  • Dielectric resonator based on equivalent localized surface plasmon polaritons and working method thereof
  • Dielectric resonator based on equivalent localized surface plasmon polaritons and working method thereof

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Embodiment Construction

[0024] Embodiments of the invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the figures are exemplary only for explaining the present invention and should not be construed as limiting the present invention.

[0025] Some recent research work revealed that Effective Localized Surface Plasmon Polaritons (Effective Localized Surface Plasmon Polaritons, ELSPs) can more effectively simulate real LSPs in the optical frequency band at low frequencies. By adding periodic metal wires on the side of the dielectric cylinder, the interface between the dielectric cylinder and the air can support the LSPs mode similar to that produced by metals in the optical frequency band under the irradiation of light waves, so that the excellent height field localization characteristics and multi-pole resonance characteristics of LSPs can be realized. It can be extended to microwave and terahertz frequ...

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Abstract

The invention discloses a dielectric resonator based on equivalent local area type surface plasmon polaritons and a working method thereof. The dielectric resonator comprises a dielectric column, a metal patch and metal wires, the metal wires are periodically arranged along the side surface of the dielectric column, the metal patch is attached to the upper and bottom surfaces of the dielectric column and is connected with the metal wires. The main mode of the dielectric resonator is an electric dipole mode of the effective surface plasmon polariton, when the electromagnetic wave is incident onthe resonator at a certain frequency, the effective localized surface plasmon polaritons can be generated on a junction surface of the dielectric column and the external air under the induction of the metal wires, so that effective localized surface plasma resonance is generated. The resonant frequency of the main mode of the dielectric resonator in the invention changes along with the change ofthe height of the resonator and the dielectric constant of the medium, but the resonant frequency of the main mode is not sensitive to the change of the diameter of the resonator. Therefore, the volume of the dielectric resonator in the invention can be multiple times smaller than that of the traditional dielectric resonator.

Description

technical field [0001] The invention relates to a dielectric resonator based on equivalent localized surface plasmons and a working method thereof, belonging to the technical field of resonators. Background technique [0002] There are two main types of surface plasmons, one is surface plasmon polaritons (SPPs) propagating on planar interfaces, and the other is localized surface plasmon polaritons on the surface of nanoparticles. Yuan (Local Surface Plasmons, LSPs). SPPs refers to an electromagnetic wave that is generated by the coupling of incident photons and surface plasmons along the direction of the conductor and medium interface. It only propagates on the medium interface where the real part of the dielectric constant is positive and negative. LSPs are incident photons and A mixed excited state formed by mutual coupling of free electrons in metal nanoparticles. Both SPPs and LSPs have the effect of field enhancement and the confinement effect of electromagnetic waves...

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Application Information

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IPC IPC(8): H01P7/10
Inventor 李茁季玉雷刘亮亮姜琦于亚茹赵屿璠顾长青
Owner NANJING UNIV OF AERONAUTICS & ASTRONAUTICS
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