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Optical fiber preform manufacturing apparatus and optical fiber preform manufacturing method

A technology of optical fiber base material and manufacturing device, applied in the direction of manufacturing tools, glass manufacturing equipment, etc., which can solve the problems of not being able to restart manufacturing, reducing the processing capacity of the optical fiber base material manufacturing device 101, and increasing the number of bubbles in the optical fiber base material

Active Publication Date: 2012-04-11
FUJIKURA LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is, there is a problem that the number of air bubbles in the manufactured optical fiber preform increases after maintenance or cleaning is performed.
[0012] In addition, since the increase of air bubbles in the optical fiber preform is expected, after maintenance or cleaning, etc., the production cannot be restarted for a certain period of time.
Therefore, there is a problem that the processing capacity of the optical fiber preform manufacturing apparatus 101 is reduced.

Method used

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  • Optical fiber preform manufacturing apparatus and optical fiber preform manufacturing method
  • Optical fiber preform manufacturing apparatus and optical fiber preform manufacturing method
  • Optical fiber preform manufacturing apparatus and optical fiber preform manufacturing method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0035] figure 1 It is a vertical cross-sectional view showing a schematic configuration of an optical fiber preform manufacturing apparatus 1 using the VAD method according to the present embodiment. in, figure 1 The up and down direction on the paper indicates the vertical direction.

[0036] Such as figure 1 As shown, the optical fiber preform manufacturing device 1 is a device for manufacturing an optical fiber porous preform S (hereinafter referred to as "porous preform S"). The optical fiber preform manufacturing device 1 includes: a reaction vessel 10, a target member 20, Core burner 30 (combustor), cladding burner 40 (combustor), chamber 50, air inlet device 60 (intake part), first exhaust device 70 (exhaust part), and second exhaust gas device 80.

[0037] The produced porous base material S is arranged inside the reaction vessel 10 . An opening (not shown) is formed in the reaction container 10 , and the space inside the reaction container 10 communicates with...

no. 2 approach

[0072] image 3 It is a vertical cross-sectional view showing a schematic configuration of an optical fiber preform manufacturing apparatus 1B using the VAD method according to the present embodiment. Also, yes image 3 neutralize figure 1 Components that are the same as those of the first embodiment shown are denoted by the same reference numerals, and description thereof will be omitted.

[0073] The core burner 30 of this embodiment is arranged on the partition plate 51 via the first support member 31 . In addition, the first support member 31 is configured to sandwich the elastic member 32 . The elastic member 32 is made of elastic rubber or resin, absorbs the vibration of the partition plate 51 when it vibrates, and suppresses the vibration of the core burner 30 .

[0074] Since a plurality of through-holes 51a are formed in the partition plate 51, the rigidity of the partition plate 51 is lower than that without the through-holes 51a. Therefore, there is a possibil...

no. 3 approach

[0077] Figure 4 It is a vertical cross-sectional view showing a schematic configuration of an optical fiber preform manufacturing apparatus 1C using the VAD method according to the present embodiment. Also, yes Figure 4 neutralize figure 1 Components that are the same as those of the first embodiment shown are denoted by the same reference numerals, and description thereof will be omitted.

[0078] The core burner 30 of this embodiment is fixed to the bottom surface 53 of the chamber 50 via the second support member 33 . The second support member 33 is formed of a plurality of rod-shaped members extending in the vertical direction, and the rod-shaped members are inserted through the through-holes 51 a of the partition plate 51 without being in contact with the through-holes 51 a of the partition plate 51 . That is, the second support member 33 is arranged on the bottom surface 53 in a state of being out of contact with the partition plate 51 .

[0079] In addition, a sp...

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Abstract

The invention provides an optical fiber preform manufacturing apparatus and an optical fiber preform manufacturing method. The optical fiber preform manufacturing apparatus includes a booth, a reaction chamber disposed inside the booth, a target member disposed within the reaction chamber, a burner that deposits glass particles on the target member, a partition plate that partitions the internal space of the booth into a first space where the reaction chamber and the burner are disposed and a second space, and that has a plurality of through holes that allows the first space and the second space to communicate with each other, an air supply unit that supplies clean air into the first space; and an exhaust unit that discharges air within the second space.

Description

[0001] This application claims the priority of Japanese Patent Application No. 2010-173902 for which it applied on August 2, 2010, and uses the content here. technical field [0002] The present invention relates to an optical fiber preform manufacturing device and an optical fiber preform manufacturing method. Background technique [0003] As a method of manufacturing a base material of an optical fiber, the VAD method and the outsourcing method are known. Figure 7 It is a vertical cross-sectional view showing a schematic configuration of a conventional optical fiber preform manufacturing apparatus using the VAD method. [0004] Such as Figure 7 As shown, the optical fiber preform manufacturing apparatus 101 includes a reaction vessel 110 , a target member 120 , a core burner 130 , and a clad burner 140 . The target rod member 120 is placed in the reaction container 110 . The core burner 130 and the cladding burner 140 accumulate glass fine particles on the front end (be...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/018
CPCC03B37/01406
Inventor 山田成敏
Owner FUJIKURA LTD
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