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Bismuth-doped multi-component glass optical fiber used as gain medium and preparation method of bismuth-doped multi-component glass optical fiber

A technology of glass optical fiber and gain medium, which is applied in the field of bismuth-doped multi-component glass optical fiber and its preparation, can solve the problems of inability to prepare high-doped bismuth ion multi-component optical fiber, achieve improved information transmission capability, simple preparation process, The effect of increasing the amount of doping

Pending Publication Date: 2022-04-29
SOUTH CHINA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] In order to overcome the limitation that the current core melting method is still unable to prepare a highly doped bismuth ion multi-component optical fiber with amplified spontaneous emission effect, the purpose of the present invention is to provide a doped bismuth ion fiber used as a gain medium based on the core melting method. Bismuth multi-component glass optical fiber and its preparation method

Method used

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  • Bismuth-doped multi-component glass optical fiber used as gain medium and preparation method of bismuth-doped multi-component glass optical fiber
  • Bismuth-doped multi-component glass optical fiber used as gain medium and preparation method of bismuth-doped multi-component glass optical fiber
  • Bismuth-doped multi-component glass optical fiber used as gain medium and preparation method of bismuth-doped multi-component glass optical fiber

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Embodiment 1

[0053] A preparation method for bismuth-doped multi-component glass optical fiber, comprising the following steps:

[0054] (1) Select high-purity SiO 2 、GeO 2 、Al 2 o 3 , MgO, Bi 2 o 3 As a raw material, SiO 2 :GeO 2 :Al 2 o 3 :MgO:Bi 2 o 3 The mol ratio is 56:14:21:8.5:0.5, and the weighing total weight is the raw material of 150g, and the raw material is ground in an agate mortar for 30 minutes to obtain fully mixed raw material;

[0055](2) Put the ground mixture in an alumina crucible and melt it at 1550°C for 1 hour, then stir with a quartz stirring rod for 30 minutes (change a clean quartz stirring rod every 10 minutes), and finally cool down by 50°C keep warm for 20 minutes;

[0056] (3) The glass melt is poured into a cuboid metal mold preheated at 550°C, and the glass block is quickly transferred to a muffle furnace, annealed at 550°C, kept for 20 hours, and finally cooled at a rate of 0.5°C / min. To room temperature, the transparent brown-red multi-compo...

Embodiment 2

[0064] A preparation method for bismuth-doped multi-component glass optical fiber, comprising the following steps:

[0065] (1) Select high-purity SiO 2 、GeO 2 、Al 2 o 3 , MgO, Bi 2 o 3 As a raw material, SiO 2 :GeO 2 :Al 2 o 3 :MgO:Bi 2 o 3 The mol ratio is 46:15:30:8.5:0.5, and the weighing total weight is the raw material of 150g, and the raw material is ground in an agate mortar for 30 minutes to obtain fully mixed raw material;

[0066] (2) Put the ground mixture in an alumina crucible, and melt it at 1650°C for 1 hour, then stir with a quartz stirring rod for 30 minutes (change a clean quartz stirring rod every 10 minutes), and finally lower the temperature by 30°C keep warm for 20 minutes;

[0067] (3) The glass melt is poured into a cuboid metal mold preheated at 550°C, and the glass block is quickly transferred to a muffle furnace, annealed at 550°C, kept for 20 hours, and finally cooled at a rate of 0.5°C / min. To room temperature, the transparent brown-r...

Embodiment 3

[0073] A preparation method for bismuth-doped multi-component glass optical fiber, comprising the following steps:

[0074] (1) Select high-purity SiO 2 、GeO 2 、Al 2 o 3 , MgO, Bi 2 o 3 , B 2 o 3 As a raw material, SiO 2 :GeO 2 :Al 2 o 3 :MgO:Bi 2 o 3 :B 2 o 3 The mol ratio is 56:14:20:8.5:0.5:1, weighs the raw material that total weight is 150g, raw material is ground in agate mortar and mortar 30 minutes, obtains the raw material that fully mixes;

[0075] (2) Put the ground mixture in an alumina crucible and melt it at 1560°C for 1 hour, then stir with a quartz stirring rod for 30 minutes (change a clean quartz stirring rod every 10 minutes), and finally cool down to 40°C keep warm for 20 minutes;

[0076] (3) The glass melt is poured into a cuboid metal mold preheated at 550°C, and the glass block is quickly transferred to a muffle furnace, annealed at 550°C, kept for 20 hours, and finally cooled at a rate of 0.5°C / min. To room temperature, the transparent...

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Abstract

The invention belongs to the technical field of gain optical fibers, and discloses a bismuth-doped multi-component glass optical fiber used as a gain medium and a preparation method of the bismuth-doped multi-component glass optical fiber. The method comprises the following steps: melting, pouring, annealing and cooling raw materials, processing the raw materials into a fiber core glass rod, and placing the fiber core glass rod in a hollow cladding to prepare a preform; and drawing the preform rod into the optical fiber. The bismuth-doped multi-component glass optical fiber is composed of a fiber core and a cladding. The fiber core is mainly prepared from the following raw materials in percentage by mole: 10 to 40 percent of GeO2, 20 to 30 percent of Al2O3, 8 to 20 percent of MgO, 0.3 to 1 percent of Bi2O3 and the balance of SiO2. The glass optical fiber disclosed by the invention has the characteristics of high bismuth doping concentration, obvious optical fiber amplified spontaneous emission effect and the like, and can cover a near-infrared band of 1.1-1.5 microns; and the optical fiber can be welded with commercial silica optical fibers. The bismuth-doped multi-component glass optical fiber is used as a gain medium in an optical amplifier and an optical fiber laser.

Description

technical field [0001] The invention relates to the technical field of optical fiber communication, in particular to a bismuth-doped multi-component glass optical fiber used as a gain medium and a preparation method thereof. Background technique [0002] Since the advent of lasers and low-loss silica fibers in the last century, modern communication technologies have enabled global information sharing and interaction. People have paid great attention to the study of active laser media, and rare earth doped quartz glass has been widely used in fiber amplifiers and fiber lasers as gain media. With the explosive growth of information volume, the existing optical fiber communication system is facing unprecedented challenges. Traditional optical fiber communication systems are basically used in the C and L bands, and only a small part of them are used. The reason why several other communication bands are not widely used is that there is no suitable gain medium. [0003] Bismuth...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03C13/04C03B19/02C03B37/012C03B37/027G02B6/02
CPCC03C13/046C03B19/02C03B37/012C03B37/027G02B6/02
Inventor 周时凤张珂李学良黄晓怡邱建荣
Owner SOUTH CHINA UNIV OF TECH
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