Artificial surface plasma coupled resonant cavity waveguide
A plasma and artificial surface technology, applied in waveguides, waveguide devices, circuits, etc., can solve the problems of reducing signal transmission efficiency, signal crosstalk, limiting sub-wavelength terahertz and optical integrated all-optical circuits, etc., to achieve perfect transmission Effect
Inactive Publication Date: 2017-08-11
深圳凌波近场科技有限公司
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However, for the traditional artificial surface plasmon waveguide, since the surface electromagnetic wave usually produces severe scattering when passing through the curved waveguide without bending radius, it will not only reduce the transmission efficiency of the signal, but also cause serious signal crosstalk in different integrated devices. Greatly limit the development of subwavelength terahertz and optically integrated all-optical circuits
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[0025] The present invention will be further described below in conjunction with the embodiments and the accompanying drawings. However, the embodiments of the present invention should not be construed as limiting the protection content of the present invention.
[0026] Such as figure 1 Shown is the structure of the artificial surface plasmon resonator of this embodiment, and the resonator supports multi-pole resonance modes, such as quadrupole mode, hexapole mode, and octopole mode. The copper sheet grid printed on the dielectric base plate includes a circular copper sheet and a grid arranged around the copper sheet; the relationship between the geometric dimensions of the surface plasmon cavity is: 2πR=N*d, Where R is the radius of the resonator, N is the number of grids, and d is the period between grids. The maximum gap width a=d / 2 between grids. The geometrical dimension of the surface plasmon resonant cavity can be adjusted, and the corresponding resonant frequency w...
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The invention discloses an artificial surface plasma coupled resonant cavity waveguide. The waveguide is formed by arranging artificial surface plasma resonant cavities, which are copper sheet grids printed on a dielectric bottom plate or metal helix structures supporting a magnetic dipole mode. The waveguide realizes transmission of surface electromagnetic wave via weak coupling among the surface plasma resonant cavities. The surface plasma resonant cavities support a four-order resonant mode and an eight-order resonant mode having quadruple rotating symmetry, so the surface electromagnetic wave is not reflected or scattered when passing through the bent waveguide composed of the resonant cavities and having not bent radius, then perfect transmission of surface electromagnetic wave is realized, and a new integrated platform is provided for future high integrated plasma circuits.
Description
technical field [0001] The invention belongs to the field of artificial surface plasmon devices, in particular to an artificial surface plasmon coupled resonant cavity waveguide. Background technique [0002] Surface plasmons (a type of surface electromagnetic wave that exists at the metal-dielectric interface in the optical band) are widely considered to be a very promising information carrier for future subwavelength terahertz and optical all-optical integrated circuits. However, in the low-frequency bands, such as microwave, terahertz and far-infrared bands, the dielectric constant of metals is close to that of perfect metals, so electromagnetic waves are poorly confined on metal surfaces and cannot be used as an effective information carrier to conduct signals. In 2004, Professor Pendry of Imperial College of Technology proposed the concept of artificial surface plasmons, that is, introducing holes on the metal surface to increase the skin depth of electromagnetic waves,...
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Login to View More IPC IPC(8): H01P3/12
CPCH01P3/121
Inventor 高振许弘毅
Owner 深圳凌波近场科技有限公司