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Method and apparatus for manufacturing optical fiber preforms using the outside vapor deposition process

An external vapor deposition, optical fiber preform technology, used in glass manufacturing equipment, manufacturing tools, glass deposition furnaces, etc., can solve the problem of cooling the preform for a long time

Inactive Publication Date: 2006-11-29
LG CORP +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0033] Also, it takes a long time during said transfer of the preform because the deposition process and the sintering process are carried out in different devices respectively
The process of cooling the preforms before transferring them also takes a long time

Method used

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  • Method and apparatus for manufacturing optical fiber preforms using the outside vapor deposition process
  • Method and apparatus for manufacturing optical fiber preforms using the outside vapor deposition process
  • Method and apparatus for manufacturing optical fiber preforms using the outside vapor deposition process

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Embodiment Construction

[0048] The present invention will be described in more detail below with reference to the embodiments shown in the drawings.

[0049] The present invention provides an apparatus for manufacturing an optical fiber preform using an outside vapor deposition (OVD) method. figure 2 is a schematic diagram of an optical fiber preform manufacturing apparatus according to an embodiment of the present invention. image 3 is a schematic diagram of an optical fiber preform manufacturing apparatus according to another embodiment of the present invention.

[0050] exist figure 2 and image 3 in, with figure 1 The corresponding components adopt the same figure 1 The same reference numerals are used, so descriptions thereof are omitted.

[0051] like figure 2 or image 3 As shown, the optical fiber preform manufacturing equipment includes: a deposition torch 18, suitable for spraying flame hydrolyzate 19 on the rotating circular target rod 22, so as to deposit a cladding 52 on the c...

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Abstract

Disclosed is a method and apparatus for manufacturing an optical fiber preform, using an outside vapor deposition (OVD) process, in which deposition and sintering processes can be continuously carried out in an OVD apparatus. The manufacturing apparatus includes a vertically-extending carriage, and a sintering unit installed at the upper end of the carriage, and adapted to sinter a clad deposited on a circular target rod. The sintering unit is a hydrogen / oxygen flame burner or a furnace using a heating source that doesn't generate H20 or hydroxyl groups (OH) during a heating operation thereof The manufacturing method includes a deposition step of depositing a clad on the circular target rod while reciprocating a deposition burner, and a sintering step of sintering the clad while reciprocating the sintering unit in a state in which the circular target rod deposited with the clad extends through the sintering unit.

Description

technical field [0001] The present invention relates to methods and apparatus for fabricating preforms using external vapor deposition; more particularly, the present invention relates to methods and apparatus for fabricating preforms using external vapor deposition for producing optical fibers in optical communication systems , the method simplifies the manufacturing process and reduces the volume of the manufacturing equipment by sequentially and continuously performing the steps of deposition and sintering. Background technique [0002] Optical fibers are generally manufactured by chemical deposition because optical fibers require high purity. [0003] Such chemical deposition methods suitable for manufacturing optical fibers include modified chemical vapor deposition (MCVD), external vapor deposition (OVD), vapor axial deposition (VAD), and the like. [0004] There is also the plasma chemical vapor deposition method (PCVD) developed by Philips of Germany. [0005] A ge...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C03B37/018C03B37/014
CPCC03B37/0146C03B37/0142C03B2207/06C03B2207/42C03B2207/54Y02P40/57C03B37/018
Inventor 申亨洙崔万秀朴赞容李奉勋
Owner LG CORP
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