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Method and device for connecting optical fiber matrix and optical fiber

An optical fiber base material and processing method technology, which can be applied to manufacturing tools, glass molding, glass re-molding, etc., can solve the problems such as the inability to suppress the bulge of the heating and melting peripheral part, the longer machining time, and the shortening of the machining time.

Inactive Publication Date: 2006-12-20
SHIN ETSU CHEM IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] However, due to the increase in the diameter of the optical fiber base material, it takes time to process the connection end into a convex shape.
When the height (axial direction) of the convex shape is reduced, the machining time can be shortened, but the swelling of the peripheral part during heating and melting cannot be suppressed.
On the other hand, when the height of the convex shape is increased, the machining time becomes longer and the cost increases, and the tapered end protrudes from the flame, causing insufficient heating and causing the problem of non-softening

Method used

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  • Method and device for connecting optical fiber matrix and optical fiber
  • Method and device for connecting optical fiber matrix and optical fiber
  • Method and device for connecting optical fiber matrix and optical fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] Make the optical fiber base material 1 with the diameter of 70mm and the proposed member 2 with the same diameter, with figure 2 The method of the present invention shown performs the joining process. The distance a between the optical fiber base material 1 and the end of the proposed component 2 is 2 mm ( figure 2 (1)). The ends of both sides are fully melted and softened after 6 minutes of heating with the hydrogen gas torch 3 of 300 L / mm ( figure 2 (2)), and then can be fusion bonded ( figure 2 (3)). Similarly, connection processing was repeated to produce ten optical fiber connection base materials 10 in which the above-mentioned optical fiber base material and the intended member were fusion-bonded.

[0053] All optical fiber connection base materials 10 have no fine air bubbles or cracks in the connection portion, and are completely welded and connected. These optical fiber connection base materials 10 are processed by a common glass lathe, and although t...

Embodiment 2

[0055] Make an optical fiber base material 1 with a diameter of 85mm and a proposed component 2 with the same diameter, use such as image 3 The illustrated method of the present invention applies a joining process. The end face chamfering 5 of 25 mm in the end face direction and 14 mm in the axial direction is performed on both ends of the optical fiber preform 1 and the proposed member 2 . The distance a between the two end faces is 2mm. At this time, the spacing at the outer edge of the tapered end is 38mm. When the ends of both sides are heated with 500 L / mm of hydrogen gas with oxyhydrogen torch 3, cover with torch flame 4 to the tapered end ( image 3 (1)). After 9 minutes of heating to fully melt and soften ( image 3 (2)), and then can be fusion bonded ( Figure 3-3 ). Similarly, ten optical fiber connection base materials 10 were fabricated.

[0056] All optical fiber connection base materials 10 have no fine air bubbles or cracks in the connection part, and ar...

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Abstract

An optical fiber matrix and its connecting method and device are provided. An end of an optical fiber matrix having a large diameter and an end of a dummy member are fused by means of heat and easily connected to each other in a short time without causing the connection portion to break or crack. The method of connecting an optical fiber matrix (1) by fusing the ends of the optical fiber matrix (1) and a dummy member (2), or two optical fiber matrices (1), or two dummy members (2) and by connecting them is characterized in that at least one end of one of the objects to be fused is held by a holding mechanism, the ends are opposed to each other, the gap between the ends is selected within the range of 1 to 20 mm, and the ends are fused and connected to each other.

Description

technical field [0001] The present invention relates to a connection processing method and device of an optical fiber preform in which the end of a fused body such as an optical fiber preform or a dummy member is heated and melted, and the two are fused and connected, and the resulting optical fiber preform material. For countries that are determined to be incorporated by reference, the contents of the following patent applications are incorporated by reference into this application as part of the description of this application. [0002] Japanese Patent Application No. 2003-389811 Application Date November 19, 2003 Background technique [0003] The optical fiber base material is manufactured by dehydrating and sintering the porous base material which is its precursor, and then vitrifying it into transparency. Afterwards, if necessary, use a glass lathe to perform bending correction, heat drawing processing with a predetermined outer diameter or length, and perform process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/012C03B23/207
CPCC03B23/207C03B37/01205C03B37/012
Inventor 久米博之山村和市
Owner SHIN ETSU CHEM IND CO LTD