Graphene surface plasmon polariton (SPP) propagation device of periodic grating structure

A graphene surface, grating structure technology, applied in the field of optical communication, can solve the problems of reducing graphene carrier mobility, low quality factor, SPP propagation distance, and reducing the degree of localization.

Inactive Publication Date: 2016-08-17
GUANGXI NORMAL UNIV
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  • Abstract
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Problems solved by technology

However, the above structure will significantly reduce the graphene carrier mobility after photolithography, which reduces the SPP propagation distance and localization degree, and the quality factor is too low
[00...

Method used

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  • Graphene surface plasmon polariton (SPP) propagation device of periodic grating structure

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Experimental program
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Embodiment

[0022] refer to figure 1 , a graphene surface plasmon propagation device with a periodic grating structure, comprising

[0023] A silicon dioxide base layer 3, the upper surface of the silicon dioxide base layer 3 is etched with a periodic grating structure 2; the ridge of the periodic grating structure 2 is provided with an organic dye gain medium 4;

[0024] Graphene layer, the graphene layer is the graphene layer 1 of array nanoribbon structure;

[0025] The upper surface of the silicon dioxide base layer 3 is overlapped with the graphene layer 1 of the nanoribbon array structure.

[0026] The silicon dioxide base layer 3 is an insulating layer.

[0027] Controlling the grating period of the periodic grating structure 2 and the width of the nanoribbons in the graphene layer 1 adjusts the SPP resonance frequency.

[0028] The incident light 5 is p-polarized light vertically irradiating the graphene waveguide on the graphene layer 1 of the array nanoribbon structure, and t...

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Abstract

The invention discloses a graphene SPP propagation device of a periodic grating structure. The device is characterized by comprising a silicon dioxide substrate layer and a graphene layer, and a periodic grating structure is etched on the upper surface of the silicon dioxide substrate layer; an organic dye gain medium is arranged in the ridge of the periodic grating structure; the graphene layer is of an array nanobelt structure; the upper surface of the silicon dioxide substrate layer is in lap connection with the graphene layer of the array nanobelt structure. According to the graphene SPP propagation device of the periodic grating structure, SPP resonance can be enhanced, the periodic graphene SPP waveguide propagation distance is increased, the structure is simple, and the device is easy to realize.

Description

technical field [0001] The invention relates to the technical field of optical communication, in particular to a propagation device of graphene surface plasmons with a periodic grating structure. Background technique [0002] Surface plasmon polariton (SPP) is an electromagnetic mode between a light wave and a migratable surface charge realized by changing the subwavelength structure of the metal surface, which can support the surface plasmon wave transmitted at the interface between the metal and the medium. Light energy is thus transmitted without being limited by the diffraction limit. Because of this unique property of SPP, it plays an important role in manipulating light energy at the nanometer level. Graphene, which is only one atom thick, has been considered as the "successor" of silicon because of its high strength, high thermal conductivity and electrical conductivity. With the rapid rise of research on graphene materials in recent years, SPP transmission can be re...

Claims

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Application Information

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IPC IPC(8): G02B6/122G02B5/124G02B5/00
CPCG02B5/008G02B5/124G02B6/1225
Inventor 朱君徐汶菊秦柳丽傅得立朱勇建宋树祥
Owner GUANGXI NORMAL UNIV
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