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Process for preparing high-strength antifatigue optical fibre

A technology of waveguide fiber and production process, applied in the field of production process of optical waveguide fiber, can solve the problems of large investment and low deposition efficiency, and achieve the effect of increasing tensile strength and fatigue resistance and reducing cost

Inactive Publication Date: 2004-07-28
YANGTZE OPTICAL FIBRE & CABLE CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The titanium-doped outer-clad optical waveguide fiber is manufactured by the external vapor deposition process. The titanium-doped process and the rod-making process are carried out on the same equipment. The original equipment needs to be greatly improved, and the investment is large. Moreover, the deposition efficiency of titanium is low by this method.

Method used

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  • Process for preparing high-strength antifatigue optical fibre
  • Process for preparing high-strength antifatigue optical fibre
  • Process for preparing high-strength antifatigue optical fibre

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] First prepare the titanium sol, then evenly disperse the quartz micropowder into the above titanium sol, adjust the pH value of the mixture to 5 by adding ammonia solution, wrap the colloid on the surface of the micropowder to form a gel mixture, remove the solution, and collect the gel mixture, Rinse with deionized water, then dry at a temperature of 200°C, then rinse the dried powder, and then dry at a temperature of 200°C to obtain titanium-doped micropowder TiO without impurity ions. 2 -SiO 2 Powder is not. Put the titanium-doped micropowder in a high-frequency graphite electric furnace to melt at a temperature above 1800°C, and use a graphite mold to draw a titanium-doped quartz glass tube; use a plasma chemical vapor deposition process to make a titanium-doped quartz glass tube into a core rod ; The titanium-doped quartz glass tube and the mandrel are polished with an oxyhydrogen flame respectively, then soaked in an alkaline solution and an acidic solution respe...

Embodiment 2

[0042] Prepare silica sol and titanium sol separately, and then add dilute acid solution to adjust the pH value of the mixed colloid to 1 while mixing the two sols, while stirring at high speed to make the mixture evenly mixed without flocculation, and then add ammonia solution to adjust The PH value of the mixed colloid is 4 until the colloid forms a gel, the solution is removed, the gel mixture is collected, rinsed with deionized water, and then dried at a temperature of 70°C. After drying, the dried powder is not rinsed, and then in Dry at a temperature of 70°C to obtain TiO without impurity ions 2 -SiO 2 powder. The titanium-doped micropowder is deposited on the outer surface of the high-purity quartz glass tube by gas refining method, and then the obtained glass tube is placed in an annealing furnace and treated with chlorine gas at 900°C for 30 hours for dehydration and stress relief. The titanium-doped quartz glass tube is made into a core rod by plasma chemical vapor...

Embodiment 3

[0044] High-purity silica sol and TiCl 3 Mix and stir at room temperature for 3 hours to obtain a part of the gel mixture, then add dilute sulfuric acid and dilute hydrochloric acid to flocculate the mixture, remove the solution, collect the gel mixture, rinse with deionized water, and then carry out at a temperature range of 500 ° C Drying, and then washing the dried powder, and then drying in the temperature range of 500 ° C, to obtain TiO without impurity ions 2 -SiO 2 powder. The titanium-doped micropowder is deposited on the outer surface of the high-purity quartz glass tube by gas refining method, and then the obtained glass tube is placed in an annealing furnace and treated with chlorine gas at 1200°C for 20 hours for dehydration and stress relief. The titanium-doped quartz glass tube is made into a core rod by plasma chemical vapor deposition; the titanium-doped quartz glass tube and the core rod are polished with a hydrogen-oxygen flame, respectively, and then soake...

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Abstract

A process for preparing high-strength antifatigue optical fibre includes synthesizing Ti-quartz micropowder by sol-gel method, preparing Ti-doped quartz glass tube, preparing core rod by chemical gas-phase depostition of plasma, putting the core rod in said tube, and drawing fibre. Its advantages include high deposition efficiency of Ti, and less investment.

Description

technical field [0001] The invention relates to a production process of an optical waveguide fiber, in particular to a production process for manufacturing a high-strength anti-fatigue optical waveguide fiber by using a titanium-doped outer cladding. Background technique [0002] As a typical inorganic non-metallic material, the inherent strength of quartz glass is very high. Theoretically, the tensile strength of quartz fiber is several times higher than that of metal fibers (such as copper wire, aluminum wire, etc.) order of magnitude. However, in practical applications, the surface of the SiO2-based glass bare optical fiber used for optical fiber communication is easily polluted (mainly impurity particles introduced during the drawing process) or corroded (mainly water vapor, ammonia or other corrosive gases), forming Defects or stress centers form micro-cracks that grow randomly under the action of tensile stress (the process of random growth ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B20/00C03B37/01C03B37/018C03B37/027C03C13/04C03C17/04G02B6/10
CPCC03B2201/42C03B37/01291C03B37/01211
Inventor 童维军王铁军曹宇青谢康
Owner YANGTZE OPTICAL FIBRE & CABLE CO LTD
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