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Method and equipment for manufacturing fully-synthesized oversize ultralow water peak optical fiber preform

An optical fiber preform, super-sized technology, applied in glass manufacturing equipment, manufacturing tools, glass deposition furnaces, etc., can solve the problems of reducing water peak attenuation, halogenation dehydration method can not meet the requirements, reducing and other problems

Active Publication Date: 2011-09-07
ZHONGTIAN TECH ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] However, in order to further reduce the hydroxyl (-OH) content of optical fiber preforms and further reduce the technical requirements of water peak attenuation, under the current process conditions, the halogenation dehydration method cannot meet the requirements.

Method used

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  • Method and equipment for manufacturing fully-synthesized oversize ultralow water peak optical fiber preform
  • Method and equipment for manufacturing fully-synthesized oversize ultralow water peak optical fiber preform
  • Method and equipment for manufacturing fully-synthesized oversize ultralow water peak optical fiber preform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] 1. Preparation of prefabricated bar base material

[0081] use as figure 1 The VAD process shown prepares the fiber prefabricated core rod and mother rod. The target rod 2 is fixed by the deposition boom 1 and lowered to the designated position (the laser emitted by the laser 8 hits the lower edge of the target rod 2). The coordinates of the blowtorch group 6 And the flow parameters of each component are set in the following table:

[0082]

[0083]

[0084] Under the above process parameters, a powder mandrel with a diameter of 242 mm was produced.

[0085] 2. Preparation of optical fiber preform vitrified core rod

[0086] use as figure 2 The sintering equipment shown prepares the vitrified core rod of the optical fiber preform. The core rod powder rod 11 is fixed by the sintering suspender 9 and lowered to the designated position. The parameters of each stage of sintering are set in the following table. Gas Nitrogen (N 2 ), the first stage uses chlorine g...

Embodiment 2

[0095] 1. Preparation of prefabricated bar base material

[0096] use as figure 1 The VAD process shown prepares the optical fiber prefabricated core rod and mother rod. The target rod 2 is fixed by the deposition boom 1 and lowered to the designated position (the laser emitted by the laser 8 hits the lower edge of the target rod 2). The coordinates of the blowtorch group 6 And the flow parameters of each component are set in the following table:

[0097]

[0098]

[0099] Under the above process parameters, a powder mandrel with a diameter of 245mm was prepared and the core-to-pack ratio was measured to be 2.6.

[0100] 2. Preparation of optical fiber preform vitrified core rod

[0101] use as figure 2 The sintering equipment shown prepares the vitrified core rod of the optical fiber preform. The core powder rod 11 is fixed by the sintering suspender 9 and lowered to the designated position. The parameters of each stage of sintering are set in the following table. ...

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Abstract

The invention relates to a method and equipment for manufacturing a fully-synthesized oversize ultralow water peak fiber preform, in particular to a method for manufacturing an oversize ultralow water peak fiber preform. The method comprises the following steps of: firstly, adjusting the flow and the position of a blow lamp group so as to increase the core diameter under the condition that the diameter of a core raw material is unchanged; and then, respectively carrying out deuterium gas treatment before the vitrification process of a core powder rod and a porous glass preform. The equipment comprises a deposition device for the core raw material of the fiber preform and a sintering device for the core raw material of the fiber preform and the porous glass preform, wherein the deposition device for the core raw material of the fiber preform comprises a gas supply part, a rotary lifting part and a control part, and the rotary lifting part comprises a servo motor, a drive screw rod, a screw rod nut and a deposition boom; and the sintering device for the core raw material of the fiber preform and the porous glass preform comprises a sintering gas supply part, a preform rotary liftingpart and a sintering furnace.

Description

technical field [0001] The invention relates to a method for manufacturing a full-synthesis super-large-size ultra-low water peak optical fiber preform and its manufacturing equipment, specifically a method for preparing a super-large-size ultra-low water peak optical fiber preform. Background technique [0002] Since the 21st century, the competition in the optical fiber industry has intensified, and the prices of optical fiber preforms, optical fibers and optical cables have also fallen again and again. Cost competition has gradually become the primary factor in the market competition in this industry. Therefore, how to reduce the cost of products has also become a major issue for major companies. focus of attention. [0003] Studies have shown that increasing the size of the optical fiber preform, that is, increasing the drawable length of a single preform can effectively reduce the cost of optical fiber per unit length. For example, based on the calculation of 100 yuan / ...

Claims

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Application Information

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IPC IPC(8): C03B37/018
CPCC03B2207/62C03B37/01446C03B37/0142C03B2201/22Y02P40/57
Inventor 薛济萍闫瑞刚钱宜刚沈一春谢康汤明明陈京京缪丙华
Owner ZHONGTIAN TECH ADVANCED MATERIALS CO LTD
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