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Micro-nano fiber downloading filter based on rainbow local effect

A technology of micro-nano optical fiber and filter, which is applied in cladding optical fiber, optical waveguide, light guide, etc., can solve the problems of optical communication system interconnection, etc., and achieve the effect of small size, simple structure, and easy integration of all optical fibers

Inactive Publication Date: 2012-11-07
三亚哈尔滨工程大学南海创新发展基地
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the current structure is difficult to interconnect with existing optical communication systems, and the application of the rainbow localization effect to micro-nano optical fibers has not been reported.

Method used

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  • Micro-nano fiber downloading filter based on rainbow local effect
  • Micro-nano fiber downloading filter based on rainbow local effect
  • Micro-nano fiber downloading filter based on rainbow local effect

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The micro-nano optical fiber download filter based on the rainbow local effect is mainly composed of a circular micro-nano optical fiber 1-1 surface using optical micro-processing technology to form a circular protruding gradient silver metal grating structure 2 on the surface, and the download channel is composed of a micro-nano optical fiber 4 coupling to complete, the broadband light source 3 is injected from the side where the height h of the gradient metal grating is smaller. The gradient metal grating structure 2 means that the period Λ of the metal grating and the grid width t of the metal grating unit 5 are fixed values, and the grid height h of the metal grating unit 5 changes linearly with a gradient. The diameter of the micro-nano fiber is 2000 nanometers; the period of the metal grating is 200 nanometers, the height of the metal grid is 5-1000 nanometers, and the width of the metal grid is 80 nanometers. Light of different wavelengths will stop at different ...

Embodiment 2

[0034] The micro-nano optical fiber download filter based on the rainbow local effect is mainly composed of a circular micro-nano optical fiber 1-1 surface using optical micro-processing technology to form a ring-embedded gradient silver metal grating structure 2 on the surface, and the download channel is composed of micro-nano The optical fiber 4 is coupled to complete, and the broadband light source 3 is injected from the side where the height h of the gradient metal grating is smaller. The diameter of the micro-nano fiber is 2000 nanometers; the period of the metal grating is 180 nanometers, the width of the metal grating is 70 nanometers, and the height of the metal grating varies linearly from 5 to 900 nanometers. Using FDTD simulation, the lights of 200THz, 180THz and 150THz obviously stop at different spatial positions to realize the light localization function. The light with shorter wavelength stops at the side where the grating height h is smaller, and the longer the...

Embodiment 3

[0036] The micro-nano optical fiber download filter based on the rainbow local effect is mainly composed of a D-shaped micro-nano optical fiber 1-1 surface using optical micro-processing technology to form a rectangular embedded gradient silver metal grating structure 2 on a flat surface, and the download channel is composed of micro-nano The optical fiber 4 is coupled to complete, and the broadband light source 3 is injected from the side where the height h of the gradient metal grating is smaller. The diameter of the micro-nano fiber is 4000 nanometers; the period of the metal grating is 180 nanometers, the width of the metal grid is 70 nanometers, and the height of the metal grid varies linearly from 5 to 900 nanometers, with a total of 60 periods. Using FDTD simulation, the efficiency will be lower than that of Embodiment 2. The light of 3 different frequencies of 300THz, 200THz, and 150THz obviously stops at different spatial positions to realize the optical localization ...

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Abstract

The invention provides a micro-nano fiber downloading filter based on the rainbow local effect. The filter comprises a micro-nano fiber (1), wherein a metal grating structure (2) is formed on the surface of the micro-nano fiber (1) by using an optical micromachining technology, and plasmon harmonic oscillations with different wavelengths are localized by the metal grating structure to different spatial positions, and are coupled in different spatial positions by a second micro nano-fiber (4) as download channels to realize downloading of lights with different wavelengths. The device downloads lights with different frequencies based on the rainbow local effect, that is, the device localizes plasmon harmonic oscillations with different wavelengths to different spatial positions by using gradient or chirped grating, so that the download channels are located in different spatial positions to realize downloading of lights with different wavelengths, and in turn realize on-line downloading of optical signals from visible light to the infrared band.

Description

technical field [0001] The invention relates to an integrated device in optical fiber communication, in particular to a micro-nano optical fiber download filter based on the rainbow local effect. Background technique [0002] Surface Plasmon Polaritons (SPPs) are a surface electromagnetic wave mode caused by the interaction between light and free electrons on the metal surface. In this interaction, free electrons occur under the irradiation of light waves with the same resonance frequency Collective oscillations. It is confined near the metal-dielectric interface, propagates along the surface, and can form localized field enhancement under specific nanostructure conditions. It can overcome the diffraction limit and generate many novel optical phenomena, such as negative refraction, ultra-high resolution imaging, transmission enhancement, etc. These novel phenomena herald new principles, new theories, and new technologies. When the metal surface structure is changed, the p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/293G02B6/34G02B6/02
Inventor 关春颖史金辉苑立波高迪李树强
Owner 三亚哈尔滨工程大学南海创新发展基地
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