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Glass wrapping layer scintillating fiber and preparation method thereof

A technology for scintillation optical fiber and glass cladding, which is applied in the direction of cladding optical fiber, glass manufacturing equipment, manufacturing tools, etc., which can solve the problems of reduced light output, excessive fiber diameter, and large Si penetration, etc., to achieve high light output and increase Light output, fast decay effect

Active Publication Date: 2016-06-15
SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is based on the problem that Si permeation is large when the crystal fiber is drawn by the silica cladding, which leads to the reduction of light yield and the problem that the diameter of the optical fiber is too large when the fiber is drawn by the micro-drop method. The material is used as the cladding to draw the scintillation crystal fiber, which effectively reduces the amount of Si infiltration in the fiber during the drawing process. At the same time, this method can be used to draw fibers ranging from tens of microns to hundreds of microns.

Method used

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  • Glass wrapping layer scintillating fiber and preparation method thereof
  • Glass wrapping layer scintillating fiber and preparation method thereof

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Effect test

Embodiment 1

[0017] Embodiment 1: (m=0, n=0, x=0.2, y=0.3, z=0.5), A is Gd, RE is Ce 3+ , cladding glass material composition 0.2SiO 2 0.3Y 2 o 3 0.5Al 2 o 3 , the core has a garnet structure, and its component Ce 0.1 :Y 3 al 5 o 12 . Cylindrical ceramic rods were prepared by doping Ce ion-doped garnet structure crystalline material, and the inner diameter of the cladding glass tube matched the outer diameter of the crystalline material. One end of the glass tube is collected by the MCVD machine tool and drawn into a tapered shape to form an optical fiber preform (such as figure 1 shown), put the optical fiber preform into the graphite furnace drawing tower for drawing. The operation process is as follows: Insert one end of the conical seal into the graphite furnace, heat and draw. Put the drawn optical fiber in a muffle furnace for heat treatment and keep it warm for a period of time.

Embodiment 2

[0018] Embodiment 2: (m=1, n=1, x=0.4, y=0.225, z=0.375), A is Gd, RE is Pr 3+ , cladding glass material composition 0.4SiO 2 0.225Y 2 o 3 0.375Al 2 o 3 , the core has a garnet structure, and its component Pr 0.1 :Y 3 al 5 o 12 . Cylindrical rods are prepared by doping Pr ions into garnet crystals, and the inner diameter of the cladding glass tube matches the outer diameter of the crystalline material. One end of the glass tube is collected by the MCVD machine tool and drawn into a tapered shape to form an optical fiber preform (such as figure 1 shown), put the optical fiber preform into the graphite furnace drawing tower for drawing. The operation process is as follows: Insert one end of the tapered seal into the graphite furnace, heat, wire-draw. Put the drawn optical fiber in a muffle furnace for heat treatment and keep it warm for a period of time.

Embodiment 3

[0019] Embodiment 3: (m=2 / 3, n=3 / 5, x=0.4, y=0.225, z=0.375), A is Gd, and RE is Yb 3+ , cladding glass material composition 0.4SiO 2 0.225Y 2 o 3 0.375Al 2 o 3 , the core has a garnet structure, and its component Yb 0.1 :Gd 1 Y 2 Ga 2 al 3 o 12 . The Yb ion doped garnet structure crystalline material is prepared into a cylindrical rod, and the inner diameter of the cladding glass tube matches the outer diameter of the crystalline material. One end of the glass tube is collected by the MCVD machine tool and drawn into a tapered shape to form an optical fiber preform (such as figure 1 shown), put the optical fiber preform into the graphite furnace drawing tower for drawing. The operation process is as follows: Insert one end of the conical seal into the graphite furnace, heat and draw. Put the drawn optical fiber in a muffle furnace for heat treatment and keep it warm for a period of time.

[0020] The wavelength of fluorescence emitted by the scintillation optica...

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Abstract

A glass-clad scintillation optical fiber and a preparation method thereof belong to the preparation and application of new scintillation optical fibers and relate to the field of preparation and application of scintillation materials. The outer cladding layer of the scintillation optical fiber prepared by the present invention adopts a low-content Si glass material, which effectively reduces the infiltration of Si atoms into the optical fiber core during the drawing process, and can simultaneously meet the requirements for drawing an optical fiber with a small size of tens of microns. The preparation method of the scintillation optical fiber of the present invention comprises the steps of prefabricated rod, optical fiber drawing and heat treatment. The scintillation optical fiber of the present invention has high optical performance, fast attenuation, high density and low cost, and can be applied to the fields of modern nuclear detection and medical space imaging equipment and the like.

Description

technical field [0001] The invention belongs to a novel scintillation optical fiber, in particular to a glass-clad scintillation optical fiber and a preparation method thereof. Background technique [0002] Scintillation materials are optical functional materials that absorb high-energy particles and emit visible light and near-ultraviolet light. In recent years, they have been widely used in high-energy physics, nuclear physics, astrophysics, geophysics, medical imaging, industrial flaw detection and safety testing application. As the most important photosensor material in radiation detection system, scintillation materials have attracted much attention. When the scintillation material interacts with radiation, changes in the valence bonds or electron-hole pairs in the material cause it to generate photons, which can be used to quantify the energy or dose of radiation, achieving anti-electromagnetic interference, passive, safe Reliable radiation sensing. Compared with tr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B6/02C03C13/04C03B37/025
CPCC03C13/046C03C3/062C03C3/095C03C4/12G02B6/02C03B37/025
Inventor 姜本学陈水林张攀德姜益光张龙毛小健
Owner SHANGHAI INST OF OPTICS & FINE MECHANICS CHINESE ACAD OF SCI
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