Molybdenum disulfide enhanced silver nanowire surface plasmon polariton transmission length substrate

A surface plasmon, silver nanowire technology, applied in optical components, instruments, optics, etc., can solve the problems of complex preparation process of photonic devices, and achieve the effects of simple operation, increased transmission length, and less energy consumption

Active Publication Date: 2021-07-23
JIANGSU UNIV
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  • Claims
  • Application Information

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Problems solved by technology

However, these methods usually require special structures, which complicate the fabrication process of photonic devices

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  • Molybdenum disulfide enhanced silver nanowire surface plasmon polariton transmission length substrate
  • Molybdenum disulfide enhanced silver nanowire surface plasmon polariton transmission length substrate
  • Molybdenum disulfide enhanced silver nanowire surface plasmon polariton transmission length substrate

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Embodiment Construction

[0025] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0026] A substrate for enhancing the transmission length of silver nanowire surface plasmons, comprising:

[0027] Substrate: including silicon dioxide substrate and single-layer molybdenum disulfide substrate, used for coupling with silver nanowires; large-diameter silver nanowires: used for excitation and transmission of surface plasmons; fiber cone: including optical fibers The apex of the cone and the following optical fiber are connected to the optical fiber coupler to couple the laser light into the optical fiber to move the Ag NW and excite the Ag NW surface plasmon. The substrate is a layered structure, which is a silicon layer, a silicon dioxide layer, a molybdenum disulfide layer, and a silver nanowire layer from bottom to top. The thickness of the silicon diox...

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Abstract

The invention provides a molybdenum disulfide enhanced silver nanowire surface plasmon polariton transmission length substrate which is of a layered structure and sequentially comprises a silicon layer, a SiO2 layer with the thickness of 300 nm, a triangular single-layer MoS2 layer and a metal silver nanowire layer from bottom to top. By using the optical fiber taper to move (move the optical fiber taper) with the same Ag NW at different positions relative to the MoS2 / SiO2 substrate and using the optical fiber taper to excite (excite the optical fiber taper) SPPs of the Ag NW, the Ag NW is all located on the SiO2 substrate or the MoS2 / SiO2 compound, and a part of the Ag NW is located on the SiO2 substrate and a part of the Ag NW is located on the MoS2 / SiO2 compound. The excitation efficiency and transmission efficiency of the silver nanowire SPPs are remarkably improved with the help of the single-layer molybdenum disulfide, then the transmission length is increased, and the method has the advantages of being easy and convenient to operate, rapid, accurate, low in energy consumption and the like.

Description

technical field [0001] The invention relates to a surface plasmon excitation and transmission structure, and belongs to the technical field of near-field optical enhancement. Background technique [0002] Surface plasmon polaritons (Surface Plasmon Polaritons, SPPs) are collective oscillations of electrons in metals or semiconductors, which can break through the diffraction limit of light to achieve the most effective method of light confinement and manipulation at the nanoscale. This unique property enables the miniaturization of optical signal processing, sensing devices, and shows great potential to overcome data transfer rate and bandwidth limitations in traditional electronic integrated circuits and interconnects. SPPs have the ability to generate highly enhanced optical fields at the diffraction limit, and have broad applications in optical lasers, optical antennas, optical sensors, and subwavelength waveguides. However, due to the high requirements for the excitation...

Claims

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Application Information

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IPC IPC(8): G02B5/00
CPCG02B5/008
Inventor 陈磊吕柳张良赵甜甜
Owner JIANGSU UNIV
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