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Visible light wave band quartz fluorescent optical fiber and preparation method thereof

A fluorescent fiber and visible light technology, applied in the direction of optical waveguide light guide, cladding fiber, glass manufacturing equipment, etc., can solve the problem of easy aging and transmission loss, and achieve the effect of high fusion coupling efficiency, high uniformity and simple structure

Pending Publication Date: 2022-07-01
SHANGHAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide a quartz fluorescent optical fiber in the visible light band and a preparation method thereof for the defects and deficiencies of the existing plastic fluorescent optical fiber, such as poor mechanical hardness, easy aging, and large transmission loss. The quartz fluorescent optical fiber has strong mechanical hardness , corrosion resistance, anti-electromagnetic interference, high fluorescence quantum yield, short decay time, stable physical and chemical properties and long service life, etc.

Method used

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  • Visible light wave band quartz fluorescent optical fiber and preparation method thereof
  • Visible light wave band quartz fluorescent optical fiber and preparation method thereof
  • Visible light wave band quartz fluorescent optical fiber and preparation method thereof

Examples

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Effect test

Embodiment 1

[0036] like figure 1 As shown, a cerium-doped visible-light band silica fluorescent fiber includes a core 1 and a cladding 2 . The core 1 is composed of high-purity quartz material doped with a small amount of cerium ions (anions can be chloride ions, oxygen defects formed by doping into the quartz material), and the corresponding oxygen defects in the quartz grid provide valence for rare earth ions. The anion required for state equilibrium, cladding 2 is composed of a low refractive index fluorine-doped silica cladding. First, a silicon dioxide loose layer is deposited inside the quartz sleeve by MCVD technology, and then the quartz sleeve with the loose layer is immersed in a pre-prepared cerium ion doping solution, and then the MCVD technology is used to doped the loose layer. The hydroxyl group is removed, sintered to a transparent state, and the rod is closed to obtain an optical fiber preform. Finally, the obtained optical fiber preform is placed inside a fluorine-dope...

Embodiment 2

[0038] like figure 1 As shown, a high-efficiency terbium-doped visible light band silica fluorescent fiber includes a core 1 and a cladding 2. Core 1 is composed of high-purity quartz material doped with a small amount of terbium ions. The corresponding oxygen vacancies in the quartz grid provide rare-earth ions with anions required for valence balance. Cladding 2 is made of low-refractive-index fluorine-doped ions. Quartz cladding composition. First, a silicon dioxide loose layer is deposited inside the quartz sleeve by MCVD technology, and then the quartz sleeve with the loose layer is immersed in a pre-prepared terbium doping solution, and then MCVD technology is used to doped the loose layer and remove the hydroxyl group. , sintered to a transparent state, and closed to obtain an optical fiber preform. Finally, the obtained optical fiber preform is placed inside a fluorine-doped silica sleeve, and placed on a drawing tower for drawing to obtain a terbium-doped silica flu...

Embodiment 3

[0040] like figure 1 As shown, a high-efficiency cerium-terbium co-doped silica fluorescent fiber in the visible light band includes a core 1 and a cladding 2. The core 1 is composed of high-purity quartz material doped with a small amount of cerium and terbium ions. The corresponding oxygen vacancies in the quartz grid provide the rare earth ions with anions required for valence balance. The cladding layer 2 is composed of low refractive index. Fluorine-doped quartz cladding composition. Firstly, OVD technology is used to prepare silica sparse body, and then the soot body material is immersed in the pre-prepared cerium and terbium doping solution, and then OVD technology is used to dehydrate the doped soot body, remove hydroxyl groups, and sinter to a transparent state. The rod is collected to obtain an optical fiber preform. Finally, the obtained optical fiber preform is placed inside a fluorine-doped silica sleeve, and placed on a drawing tower for drawing to obtain a cer...

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Abstract

The invention belongs to the technical field of optical fiber preparation, and particularly relates to a visible light wave band quartz fluorescent optical fiber and a preparation method thereof, and the rare earth ion doped visible light wave band (350-750 nm) quartz fluorescent optical fiber is prepared by combining improved chemical vapor deposition (MCVD) with a high-temperature doping process or combining external vapor deposition (OVD) with a solution soaking method. The quartz fluorescent optical fiber disclosed by the invention has the advantages of high refractive index difference, low loss, uniform rare earth ion doping, controllable doping concentration, wide fluorescence band, high fluorescence quantum yield, high optical fiber quartz purity, excellent mechanical property and the like, and can be widely applied to the fields of radiation detection, electric power sensing, biological monitoring, fluorescent illumination and the like.

Description

technical field [0001] The invention belongs to the technical field of optical fiber preparation, relates to functional optical fibers, and optical fiber sensing, in particular to a visible light band quartz fluorescent fiber and a preparation method, in particular to a visible light band quartz fluorescent fiber with high quantum efficiency. Background technique [0002] Fluorescent optical fibers, especially fluorescent optical fibers whose emission range is in the visible light band, have an emission wavelength that perfectly matches the optimal detection wavelength of traditional photodetectors, which is very beneficial to the integration of sensing systems and lower costs. In recent years, especially in the field of partial discharge detection in the field of power sensing, plastic fluorescent optical fibers have been used in high-voltage transformers (CN202110854291.0), ring network cabinets (CN201921900141) due to their advantages of small size, anti-electromagnetic in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02C03B37/014C03B37/018C03C25/285C03C25/105C03C25/106
CPCG02B6/02033G02B6/02338G02B6/02342C03B37/014C03B37/018C03B37/01853C03B37/01446C03C25/285C03C25/105C03C25/106G02F2202/06G02F2203/055G02F2203/023
Inventor 王廷云贾明胡程勇黄怿邓传鲁
Owner SHANGHAI UNIV
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