Method and device for adjusting transmission of surface plasma polarized wave on graphene

Abstract

The invention provides a method for adjusting the transmission of a surface plasma polarized wave on the graphene, which comprises the following steps: arranging a silicon-oxide or alumina cone on the graphene, wherein the a substrate for supporting the graphene is arranged below the graphene; putting the graphene with the substrate and the silicon-oxide or alumina cone on the graphene in air; and inputting the spherical wave into the graphene, and converting the spherical wave into the plane wave under the joint action of the silicon-oxide or alumina cone and the graphene. The invention further provides a device for adjusting the transmission of the surface plasma polarized wave on the graphene, which comprises the grapheme and the substrate for supporting the grapheme, wherein the upper surface of the grapheme is provided with the alumina cone and a silicon-oxide dielectric layer is arranged on the alumina cone, or the upper surface of the grapheme is provided with the silicon-oxide cone and an alumina dielectric layer is arranged on the silicon-oxide cone.

Description

technical field [0001] The invention relates to a method and device for controlling the propagation of surface plasmon polarized waves on graphene, especially the method and device for regulating and controlling the propagation of surface plasmon polarized waves on graphene, which can be achieved by changing the surrounding medium of graphene properties and thickness to change the propagation path of surface plasmon polarized waves on graphene, so that various optical conversion devices such as Lone Cypress lens can be realized. Background technique [0002] Since the discovery of graphene in 2004, it has aroused intense research interest. Ashkan Vakil and Professor Nader Engheta proposed a series of optical transformation devices based on graphene-based surface plasmon polarized waves in 2011 (“Transformation optics using graphene,” Science 332(6035), 1291-1294, 2011). At present, the control method of surface plasmon polarization wave based on graphene is mainly to change...

AI Technical Summary

Problems solved by technology

[0007] Technical problem: In order to solve the problem of regulating the propagation of surface plasmon polarized waves on graphene by applying an applied voltage, the applied voltage in actual operation should not be too large, and the gap between the silicon substrate and the graphene can vary greatly. Limitation, the present invention proposes a method and device for regulating the propagation of surface plasmon polarized waves on graphene, and provides another simpler and more effective method for regulating the propagation of surface plasmon polarized waves on graphene, Applying this method can realize a variety of optical conversion devices more easily, and has a wide range of applications in the fields of imaging and communication

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