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Surface plasma waveguide based on sub-wavelength metal V groove superpower light fettering

A surface plasmon, sub-wavelength technology, applied in the field of ionized waveguide, can solve problems such as constraints, metal ohmic loss, and ohmic) loss increasing

Active Publication Date: 2016-04-06
徐州天骋智能科技有限公司
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Problems solved by technology

However, the carriers that generate surface plasmons are free electrons that resonate on the surface of conductors, so metal ohmic loss is an inevitable problem for surface plasmons
More importantly, in the case of ultra-strong beam confinement, its transmission (ohmic) loss will further increase, which limits the practical application of surface plasmon waveguides.

Method used

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  • Surface plasma waveguide based on sub-wavelength metal V groove superpower light fettering
  • Surface plasma waveguide based on sub-wavelength metal V groove superpower light fettering
  • Surface plasma waveguide based on sub-wavelength metal V groove superpower light fettering

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Embodiment 1

[0020] Embodiment 1: the width of the upper side of the V groove in this embodiment is W=1 micron, and the angles α and θ of the V groove are respectively taken as α=40 degrees and θ=45 degrees, and the silicon dioxide film layer gradually changes from zero from top to bottom. The thickness is t=5 nm. The working wavelength is selected as the communication wavelength, that is, the wavelength is 1550 nanometers. At the communication wavelength, the dielectric constant of the material silver is -129+3.3i, the dielectric constant of the material silicon dioxide is 2.25, and the dielectric constant of air is 1.

[0021] Before discussing the transmission performance of the surface plasmon waveguide, let us first define two evaluation parameters: the transmission length L and the mode area S. The transmission length is used to describe the loss characteristics of the waveguide, and the longer the transmission length, the smaller the optical loss. The mode area is used to define th...

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Abstract

A surface plasma waveguide based on sub-wavelength metal V groove superpower light fettering mainly comprises a metal (silver) substrate 1 carved with a V groove; a layer of silica medium membrane 2 is coated on each of the two inner walls of the V groove on the silver substrate 1; and a whole optical waveguide is surrounded by an air layer 3. The width of the V groove is W; the thickness of the silica membrane on the top of the V groove is t; and the angle of the V groove is alpha and theta.

Description

technical field [0001] The invention relates to a nanometer optical waveguide device, in particular to a surface plasmon waveguide based on subwavelength metal V-groove ultra-strong beam binding. Background technique [0002] Due to the limitation of the optical diffraction limit, the development of small-scale integration of traditional dielectric optical waveguides has encountered an insurmountable technical bottleneck. Exploring how to break through the waveguide of light diffraction limit has extremely important research significance for nano-integrated optics and quantum optical communication. [0003] In recent years, researchers have discovered that there is a propagating electromagnetic wave on the interface between the conductor and the dielectric, that is, the surface plasmon wave, which can greatly break through the optical diffraction limit and confine the electromagnetic wave to the nanometer range. Therefore, subwavelength optical waveguides based on surface p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/122
CPCG02B6/1226
Inventor 马云燕马佑桥艾华束鑫
Owner 徐州天骋智能科技有限公司
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