Manufacturing device and manufacturing method of optical fiber preform rod

A technology of optical fiber preform and manufacturing method, which is applied in the field of optical communication, achieves the effect of simple structure and solving the problems of carbon removal and dehydration

Active Publication Date: 2016-06-15
HENGTONG OPTICAL MATERIAL CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] The object of the present invention is to provide a kind of manufacturing device and its manufacturing method of

Method used

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  • Manufacturing device and manufacturing method of optical fiber preform rod
  • Manufacturing device and manufacturing method of optical fiber preform rod

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Example

[0040] First embodiment: use CH 4 And O 2 As reactive gas, and SiCl 4 As raw material, the density is 0.4~0.8g / cm by deposition method 3 SiO 2 Green body 10.

Example

[0041] Second embodiment: use H 2 And O 2 It is a reactive gas and uses OMCTS as a raw material to obtain a density of 0.4~0.8g / cm by the deposition method 3 SiO 2 Green body 10.

Example

[0042] The third embodiment: using CH4 and O2 as reaction gases and OMCTS as raw materials, the density of 0.4~0.8g / cm is obtained by deposition method 3 的SiO2 body 10.

[0043] The SiO2 blank 10 prepared by the above three deposition methods is placed in the oxidative dehydration sintering furnace 11 of the present invention and covered with a sealing cover 14. The method of manufacturing the optical fiber preform of the present invention also has three embodiments.

[0044] The first embodiment of the manufacturing method of the optical fiber preform of the present invention: the manufacturing method of the first embodiment of the SiO2 blank 10 is used to make SiO 2 For the blank 10, the specific content of the first, third to sixth steps of the method of manufacturing the optical fiber preform of the present invention is as follows:

[0045] The specific steps of the first step above are:

[0046] Step A1: The SiO2 green body 10 is placed in the sintering furnace 11, and the sealing...

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Abstract

The invention provides a manufacturing device and manufacturing method of an optical fiber preform rod. The manufacturing device of the optical fiber perform rod comprises an oxidizing dehydration sintering furnace, a central pipe located in the sintering furnace, at least one heating body which is located in the sintering furnace and located outside the central pipe, a SiO2 blank located in the central pipe, a sealing cover used for sealing the central pipe, an inner cavity located in the central pipe, an outer cavity which is located outside the central pipe and located in the sintering furnace, a first vacuum exhaust pipe, a first air pipe, a second vacuum exhaust pipe and a second air pipe, wherein the first vacuum exhaust pipe and the first air pipe are connected to the outer cavity, the second vacuum exhaust pipe and the second air pipe are connected to the sintering furnace, and the heating bodies, the SiO2 blank and the sealing cover are all located in the sintering furnace. According to the method, through an OH removal and decarburization method of the SiO2 blank and the oxidizing dehydration sintering furnace, the decarburization and dehydration problems are solved to obtain the low-C and low-OH optical fiber preform rod. The manufacturing device is simple and reliable in structure.

Description

technical field [0001] The invention belongs to the optical communication technology, and in particular relates to a manufacturing device and a manufacturing method of an optical fiber preform rod. Background technique [0002] In the manufacturing process of optical fiber preforms, organic raw materials (siloxanes) or carbon-containing gases (CH4, CF4, Freon, etc.) are often used to react to prepare optical fiber preform blanks, and the molecular weight of carbon-containing materials or carbon-containing gases The larger it is, the less likely it is to fully burn, so the unburned carbon tends to remain in the optical fiber preform body. [0003] When the residual carbon in the optical fiber preform body is sintered at high temperature, it will combine with SiO 2 (Silicon dioxide) reaction breaks the silicon-oxygen bond (Si-O) in the vitreous; the CO / CO2 generated by the reaction is easy to form bubbles in the vitreous. The broken silicon-oxygen bond (Si-O) and the air bub...

Claims

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Application Information

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IPC IPC(8): C03B37/018
CPCC03B37/018C03B37/01853
Inventor 赵奉阔田国才屠建宾钮晓平钱亮
Owner HENGTONG OPTICAL MATERIAL CO LTD
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