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Surface plasma polarization wave variable propagating width wave guide based on graphene

A surface plasmon, polarized wave technology, applied in waveguides, waveguide-type devices, circuits, etc., to achieve good application prospects, light weight, and easy integration.

Inactive Publication Date: 2012-07-11
SOUTHEAST UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

So far, no one has applied graphene to design variable propagation width waveguides for surface plasmon polarized waves

Method used

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  • Surface plasma polarization wave variable propagating width wave guide based on graphene
  • Surface plasma polarization wave variable propagating width wave guide based on graphene
  • Surface plasma polarization wave variable propagating width wave guide based on graphene

Examples

Experimental program
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Embodiment Construction

[0024] A graphene-based surface plasmon polarized wave variable propagation width waveguide, including: a silicon substrate 10 and a silicon dioxide substrate 11 laminated together, and a stepped strip-shaped protrusion is provided on the silicon substrate 10 , the silicon dioxide substrate 11 is provided with a stepped belt-shaped groove suitable for the stepped belt-shaped protrusion, and the stepped protrusion is embedded in the stepped groove, and the silicon dioxide substrate 11 is provided with There is a layer 12 of graphene.

[0025] One pole of the bias voltage source 13 is added to the graphene, and the other pole is added to the silicon substrate. Different thicknesses are etched in different regions of the silicon substrate, so that the silicon dioxide substrate laid on the silicon substrate has different thicknesses in corresponding regions.

[0026] According to the formula:

[0027]

[0028]

[0029] And the formula of graphene gate voltage and silicon d...

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Abstract

A surface plasma polarization wave variable propagating width wave guide based on graphene comprises a silicon substrate and a silicon dioxide substrate which are overlapped. A step-shaped band protrusion is arranged on the silicon substrate, a step-shaped band groove matched with the step-shaped band protrusion is arranged on the silicon dioxide substrate, the step-shaped protrusion is inserted into the step-shaped band groove, the silicon dioxide substrate is provided with a graphene layer, one pole of a bias voltage source is positioned on the silicon substrate, and the other pole of the bias voltage source is positioned on the graphene. The propagating width of the surface plasma polarization wave variable propagating width wave guide based on graphene varies with the bias voltage through design of widths and the bias voltage in different areas of the silicon substrate. The surface plasma polarization wave variable propagating width wave guide based on graphene can be operated on a plurality of frequency points, is light in weight, convenient to process and easy to integrate, and has a good application prospect.

Description

technical field [0001] The present invention relates to a surface plasmon polarized wave variable propagation width waveguide realized by graphene, especially the propagation width of the surface plasmon polarized wave variable propagation width waveguide based on graphene can be adjusted by applying different biases voltage to change. Background technique [0002] Since the discovery of graphene in 2004, it has aroused intense research interest. Ashkan Vakil and Professor Nader Engheta proposed a graphene-based surface plasmon polarized wave (SPP wave) waveguide in 2011 (“Transformation optics using graphene,” Science 332(6035), 1291-1294, 2011). Now, we propose a graphene-based SPP wave variable propagation width waveguide, which not only has the advantages of small graphene SPP wave waveguide loss and adjustable dielectric constant, but also has the ability to adjust its propagation width advantage. Professor G.W.Hanson proposed that the conductivity of graphene can be...

Claims

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Application Information

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IPC IPC(8): H01P3/18
Inventor 陆卫兵朱薇许红菊董正高
Owner SOUTHEAST UNIV
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