Plasma filter with embedded rectangular cavity based on MIM waveguide

A plasma and rectangular cavity technology, applied in waveguide devices, instruments, optics, etc., can solve the problems of low transmittance, large size, and complexity of waveguide filters, and achieve good application prospects, simple structure, and large Q value Effect

Active Publication Date: 2018-09-04
GUILIN UNIV OF ELECTRONIC TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention provides a rectangular cavity plasma filter based on MIM waveguide, the purpose of which is to solve the problems of

Method used

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  • Plasma filter with embedded rectangular cavity based on MIM waveguide
  • Plasma filter with embedded rectangular cavity based on MIM waveguide
  • Plasma filter with embedded rectangular cavity based on MIM waveguide

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Embodiment Construction

[0015] The present invention is described in more detail below in conjunction with accompanying drawing example:

[0016] to combine figure 1 , The embodiment of the present invention is based on a MIM waveguide embedded rectangular cavity plasmonic filter, which consists of a metal thin film and an incident waveguide hollowed out on the metal thin film, a rectangular aperture and a rectangular resonant cavity.

[0017] The metal film is made of metal silver film material. In the example of the present invention, the overall metal thin film is square and the size is set to 2000*2000nm. The metal film is hollowed out to form an incident waveguide, a rectangular aperture and a rectangular resonant cavity, so that the medium filled in the incident waveguide, the outgoing waveguide and the resonant cavity is air. In the example of the present invention, the incident waveguide is extended horizontally on the metal thin film and has the same width as the overall structure.

[001...

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Abstract

The invention discloses a plasma filter with an embedded rectangular cavity based on an MIM waveguide. The plasma filter belongs to the field of micro-nano optoelectronics. The filter of a metal-dielectric-metal rectangular waveguide is constructed by adopting an aperture coupling method. According to the plasma filter, a metal thin film is made of a metal silver material, the overall prepared metal thin film is square, and an incident waveguide, a rectangular aperture and a rectangular resonant cavity are formed in the metal thin film in a hollowed manner. The plasma filter adopts the rectangular resonant cavity to realize resonance coupling of surface plasmon polaritons SPP and the resonant cavity through connection of the rectangular aperture and the optical waveguide. The plasma filterhas the advantage of being capable of realizing frequency selection property of the filter through adjusting the length and width of the rectangular resonant cavity, the width of the rectangular aperture and the like.

Description

(1) Technical field [0001] The invention relates to the field of micro-nano photon technology, in particular to a plasma filter embedded with a rectangular cavity based on an MIM waveguide. (2) Background technology [0002] Surface plasmon polaritons (Surface Plasmon Polaritons, SPPs) are electromagnetic surface waves propagating on the metal-dielectric interface, and their field distribution decays exponentially on both sides of the interface. SPPs have the characteristics of breaking through the traditional optical diffraction limit and strong locality, so they can realize the guidance and manipulation of light at the sub-wavelength level. Based on SPPs, they can be used as energy and information carriers and have important potential application value in high-density integrated optical circuits. [0003] There are two important types of waveguide structures in the SPPs waveguide structure, namely IMI (Insulator-Metal Insulator) and MIM (Metal Insulator-Metal) waveguides....

Claims

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Application Information

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IPC IPC(8): H01P1/20H01P1/207G02B5/00
CPCG02B5/008H01P1/20H01P1/207
Inventor 杨宏艳窦婉滢韦柳夏苑立波
Owner GUILIN UNIV OF ELECTRONIC TECH
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