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Preparation method of photonic crystal optical fiber preform

A photonic crystal optical fiber and preform technology, which is applied to glass manufacturing equipment, manufacturing tools, etc., can solve the problems of uneven doping of optical fiber preforms, large optical signal attenuation, low doping concentration, etc., so as to achieve no electrode pollution, The effect of uniform doping and high doping concentration

Inactive Publication Date: 2015-03-25
连云港市盛昌照明电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention: there are problems such as uneven doping and low doping concentration in the preparation process of the optical fiber preform, so that the prepared optical fiber has problems such as large loss in optical transmission and large attenuation of optical signals

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Firstly, 100 kg of silicon dioxide powder, 1 kg of ytterbium trichloride hexahydrate powder and 7.25 kg of aluminum trichloride hexahydrate powder were weighed. Silica powder is also called quartz powder. Among them, the particle size of the silicon dioxide powder is about 1 μm, and the purity of the silicon dioxide is not lower than 4N, that is, not lower than 99.99%. Silica powder with a particle diameter of 1 μm corresponds to 13000 mesh. 100kg of silicon dioxide powder, 1kg of ytterbium trichloride hexahydrate powder and 7.25kg of aluminum trichloride hexahydrate powder are equivalent to a molar ratio of silicon dioxide, ytterbium trichloride hexahydrate and aluminum trichloride hexahydrate of 645.7:1 : 11.64.

[0020] Then, 1 kg of ytterbium trichloride hexahydrate powder and 7.25 kg of aluminum trichloride hexahydrate powder were successively added to 26 liters of alcohol aqueous solution, and stirred by a magnetic stirrer to form a uniform and transparent solut...

Embodiment 2

[0027] Firstly, 76.4 kg of silicon dioxide powder, 764 g of ytterbium trichloride hexahydrate powder and 5.6 kg of aluminum trichloride hexahydrate powder were weighed. Among them, the particle size of the silica powder is 7000 mesh, and the purity of the silica is not lower than 4N, that is, not lower than 99.99%. 76.4kg silicon dioxide powder, 764g ytterbium trichloride hexahydrate powder and 5.6kg aluminum chloride hexahydrate powder are equivalent to the mol ratio of silicon dioxide, ytterbium trichloride and aluminum chloride hexahydrate being 500:1: 9.

[0028] Then 764g of ytterbium trichloride powder and 5.6kg of aluminum trichloride hexahydrate powder were successively added to 13 liters of alcoholic aqueous solution, and stirred by a magnetic stirrer to form a uniform and transparent solution. Wherein, the alcohol concentration of alcohol aqueous solution is 20%. The molar volume ratio of ytterbium trichloride and alcoholic aqueous solution is: 1mol:5l.

[0029] T...

Embodiment 3

[0033] Firstly, 122kg of silicon dioxide powder, 764g of ytterbium trichloride powder and 4.13kg of aluminum trichloride powder were weighed. Among them, the particle size of the silica powder is 10,000 mesh, and the purity of the silica is not lower than 4N, that is, not lower than 99.99%. 122kg of silicon dioxide powder, 764g of ytterbium trichloride powder and 4.13kg of aluminum trichloride powder correspond to a molar ratio of silicon dioxide, ytterbium trichloride and aluminum trichloride of 800:1:12.

[0034] Then 764g of ytterbium trichloride powder and 4.13kg of aluminum trichloride powder were successively added into 18 liters of alcoholic aqueous solution, and a uniform and transparent solution was formed after being stirred by a magnetic stirrer. Wherein, the alcohol concentration of alcohol aqueous solution is 30%. The molar volume ratio of ytterbium trichloride to alcohol aqueous solution is: 1mol:7l.

[0035] Then 122kg of silicon dioxide powder was added into ...

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Abstract

The invention discloses a preparation method of a photonic crystal optical fiber preform. The preparation method comprises the following main steps: firstly dissolving ytterbium trichloride hexahydrate and aluminum trichloride hexahydrate in an alcohol water solution, further adding a sufficient amount of high-purity silicon dioxide powder into the solution, stirring to obtain a suspension, then stirring the suspension for not less than 20min, then drying, further putting dry ion-doped quartz powder into a high-oxygen and high-temperature environment for dehydration, and finally melting in the high-oxygen environment to obtain the optical fiber preform. Compared with a traditional process, the preparation method disclosed by the invention has the advantages of uniform doping, high doping concentration, no electrode pollution and the like, and the prepared photonic crystal optical fiber preform has good physical properties and optical properties of high purity, nearly no hydroxy groups, high heat loss threshold, good heat stability, higher laser threshold and the like.

Description

technical field [0001] The invention relates to the preparation of photonic crystal fiber. Background technique [0002] Photonic Crystal Fibers (PCF) is a kind of optical fiber developed in recent years, which has a periodic microstructure in its cross section. Compared with traditional single-mode and multi-mode fibers, photonic crystal fibers have many advantages such as low transmission energy consumption and no cut-off mode. It has a good application prospect in large-capacity wavelength division multiplexing transmission, which can multiplex more light waves in optical fibers, and can reduce optical relays for long-distance transmission. [0003] Whether it is a photonic crystal fiber or a single-mode fiber and a multi-mode fiber, it is drawn from a silica glass rod. Such a quartz glass rod is also called an optical fiber preform. The method of stacking and drawing the optical fiber preform is used to prepare the photonic crystal fiber. Firstly, the basic structure ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/012C03C13/04
CPCC03C13/045C03C3/06C03C2201/3488C03C2201/36C03C2203/22C03B37/0128C03B2201/20C03B2201/36
Inventor 孙国方樊磊李玉生
Owner 连云港市盛昌照明电器有限公司
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