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Preparation method of optical fiber preform

A technology of optical fiber preform and manufacturing method, which is applied in the direction of manufacturing tools, glass manufacturing equipment, etc., and can solve the problems of difficult control and adjustment of hydroxyl groups, unreachable content, unsatisfactory performance of ultraviolet transmission optical fibers, etc.

Inactive Publication Date: 2011-07-13
成都亨通光通信有限公司
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  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

[0003] Ultraviolet transmission optical fiber requires a hydroxyl content of 1400-1500PPm, but the current methods of manufacturing optical fibers are difficult to control and adjust the hydroxyl content, or cannot reach the above content, making the performance of ultraviolet transmission optical fiber unsatisfactory

Method used

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  • Preparation method of optical fiber preform
  • Preparation method of optical fiber preform
  • Preparation method of optical fiber preform

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Embodiment Construction

[0005] as attached figure 1 As shown, the vapor deposition device used in the present invention consists of hydrogen inlet 1, helium inlet 2, chlorofluorocarbon inlet 3, O2 inlet 4, SiCl4 inlet 5, BBr3 inlet 6, gas flow controller 7, rotary connector 8, glass lathe 9, oxyhydrogen flame burner 10 and other parts, wherein the quartz tube 11 is clamped on the glass lathe 9 and connected with the rotary connector 8, and the rotary connector 8 can make the quartz tube 11 rotate on the glass lathe 9 The gas flow controller 7 does not rotate, and the oxyhydrogen flame burner 10 can move left and right along the length direction of the quartz tube 11 on the glass lathe 9 .

[0006] as attached figure 2 As shown, the preform of the present invention is composed of a core 12 , a reflective layer 13 and a quartz cladding 14 .

[0007] In the present invention, SiCl4, BBr3, chlorofluorocarbons, oxygen, hydrogen and helium are mixed in a certain ratio and fed into the quartz tube, and t...

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Abstract

The invention relates to a preparation method of an optical fiber preform. The method comprises the following steps: using SiCl4, BBr3, chlorofluoromethane, oxygen, hydrogen and helium as raw materials to deposit a fluorine-boron codoped coating used as the reflection layer in a quartz tube; then depositing a core layer, wherein when the core layer is deposited, hydrogen is doped and the ratio of hydrogen to the mixed gas in the tube is adjusted to ensure that the core layer can have different hydroxyl contents; and finally fusing at high temperature to shrink the preform.

Description

technical field [0001] The invention relates to a method for manufacturing an optical cable flame-retardant polyethylene sheath material. Background technique [0002] The optical cable is used in the environment where the high-voltage transmission line is laid on the same tower. Because the optical cable has many advantages such as small outer diameter, light weight, large installation span, lightning resistance, no electromagnetic interference, and easy laying, it can continue to use the existing The power line makes full use of its tower resources and saves a lot of construction costs. Therefore, it has been favored by the power sector in recent years and has been widely used in power grid reform. [0003] Ultraviolet transmission optical fiber requires a hydroxyl content of 1400-1500PPm, but several methods of manufacturing optical fibers are difficult to control and adjust the content of hydroxyl groups, or cannot reach the above content, making the performance of ultra...

Claims

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Application Information

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IPC IPC(8): C03B37/018
CPCC03B37/01807C03B2201/14
Inventor 孙义兴张腊生谭会良许建国廖郑洪李炳惠张华李涛陈曲谢河彬
Owner 成都亨通光通信有限公司
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