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Method for preparing low-water-peak large-diameter optical fiber preform sleeve pipe

A technology of optical fiber preform and large diameter, applied in glass manufacturing equipment, manufacturing tools, etc., can solve the problems of complex process, shortage of helium resources, high production cost, etc., and achieve the effect of high purity

Active Publication Date: 2013-07-31
久智光电子材料科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The one-time investment of the artificial synthesis method is high, and the process requires deposition, dehydration, sintering and other processes, and the process is complicated
Helium protection is required in the production process, but helium resources are scarce and expensive, and the process produces a large amount of HCL gas, which puts a lot of pressure on environmental protection
The above factors lead to higher production costs of the process

Method used

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  • Method for preparing low-water-peak large-diameter optical fiber preform sleeve pipe
  • Method for preparing low-water-peak large-diameter optical fiber preform sleeve pipe
  • Method for preparing low-water-peak large-diameter optical fiber preform sleeve pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] Embodiment 1: Dimensions of the quartz sleeve of the optical fiber preform with low water peak and large diameter:

[0045] The outer diameter is 200mm, the inner diameter is 43mm, and the length is 1500mm.

[0046] Step 1: First select high-purity quartz powder (total impurity content <30ppm), use plasma flame 1 as the heat source, and deposit quartz sand layer by layer on the outer circle of the central base tube 2 in the high-frequency plasma horizontal mound making machine , depositing 1.5 kilograms per hour, directly coating the fused quartz powder 3 on the central base pipe 2, depositing for 40 hours to form a hollow quartz wool mound 5 with a diameter of 150-160 mm;

[0047] The second step: select high-purity quartz powder, continue to use the ion flame 4 as the heat source, deposit quartz sand layer by layer on the outer circle of the quartz wool mound 5 in the high-frequency plasma vertical mound making machine, deposit 1.0 kg per hour to melt The quartz powd...

Embodiment 2

[0051] Embodiment 2: Dimensions of the quartz sleeve of the optical fiber preform with low water peak and large diameter:

[0052] The outer diameter is 260mm, the inner diameter is 43mm, and the length is 1650mm.

[0053] Step 1: First select high-purity quartz powder (total impurity content <30ppm), use plasma flame 1 as the heat source, and deposit quartz sand layer by layer on the outer circle of the central base tube 2 in the high-frequency plasma horizontal mound making machine , depositing 1.4 kilograms per hour, directly coating the fused quartz powder 3 on the central base pipe 2, depositing for 44 hours to form a quartz wool mound 5 with a diameter of 150-160mm;

[0054] The second step: select high-purity quartz powder, continue to use the ion flame 4 as the heat source, and deposit quartz sand layer by layer on the outer circle of the hollow quartz wool mound 5 in the high-frequency plasma vertical mound making machine, depositing 1.2 kg per hour. The molten quart...

Embodiment 3

[0058] Example 3: Dimensions of the quartz sleeve of the optical fiber preform with low water peak and large diameter:

[0059] The outer diameter is 310mm, the inner diameter is 43mm, and the length is 2000mm.

[0060] Step 1: First select high-purity quartz powder (total impurity content <30ppm), use plasma flame 1 as the heat source, and deposit quartz sand layer by layer on the outer circle of the central base tube 2 in the high-frequency plasma horizontal mound making machine , depositing 1.4 kilograms per hour, directly coating the fused quartz powder 3 on the central base pipe 2, depositing for 52 hours to form a hollow quartz wool mound 5 with a diameter of 150-160 mm;

[0061] The second step: select high-purity quartz powder, continue to use the ion flame 4 as the heat source, and deposit quartz sand layer by layer on the outer circle of the quartz wool mound 5 in the high-frequency plasma vertical mound making machine, depositing 1.4 kg per hour to melt The quartz ...

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Abstract

The invention discloses a production method for preparing a low-water-peak large-diameter optical fiber preform sleeve pipe. The method comprises the steps that: 1, a hollow quartz blank piece is prepared with a plasma horizontal solid-phase external deposition method, such that the diameter of the blank piece reaches 150-160mm; and 2, smelting is continued on the basis of the blank piece with the plasma vertical solid-phase external deposition method, such that a quartz pipe piece with a maximal diameter larger than 300mm is produced. According to the invention, plasma flame heating is adopted, and horizontal process is combined with vertical process, such that the problem of the impossibility of realizing large-diameter blank piece load bearing of a traditional horizontal plasma solid-phase external deposition method is solved. The obtained large-diameter blank piece is further processed into the low-water-peak large-diameter optical fiber preform quartz sleeve pipe. The product provided by the invention has the advantages of high purity, less bubble, low hydroxyl group, and high strength. The method can be applied in the field of low-water-peak optical fibers.

Description

technical field [0001] The invention relates to a method for preparing quartz products, in particular to a method for preparing a low-water-peak large-diameter optical fiber preform sleeve Background technique [0002] At present, there are not many companies producing quartz sleeves for optical fiber preforms, mainly Heraeus of Germany. Their production methods mainly use artificially synthesized quartz powder and continuous melting method, SiCl 4 +2H 2 +O 2 → SiCl 4 +2H 2 O→4HCl+SiO 2 . The one-time investment of the artificial synthesis method is high, and the process requires deposition, dehydration, sintering and other processes, and the process is complicated. Helium protection is required in the production process, but helium resources are scarce and expensive, and the process produces a large amount of HCL gas, which puts a lot of pressure on environmental protection. The above factors lead to higher production costs of the process. [0003] In addition, with...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/018
CPCC03B37/01486C03B37/01426
Inventor 张锦秦卫光谷巨明王春玲孙丽丽李文彦刘晓光张晓风
Owner 久智光电子材料科技有限公司
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