Preparation method and preparation equipment of optical fiber preform

An optical fiber preform and equipment technology, applied in the field of optical fiber preform preparation, can solve the problems of inability to accurately control the extrusion speed of the preform rod, difficulty in forming the optical fiber preform rod, and inability to meet the requirements of special optical fiber preparation, etc., to achieve precise control , prevent bending, improve the effect of preparation efficiency

Active Publication Date: 2015-04-22
NINGBO UNIV
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Problems solved by technology

However, the structure of the mold used in the method used in this patent is simple, and it is difficult to shape the optical fiber preform during the preparation process. At the same time, the pushing mechanism of the extruder cannot accurately control the extrusion speed of the preform.
[0005] The existing preparation meth

Method used

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  • Preparation method and preparation equipment of optical fiber preform
  • Preparation method and preparation equipment of optical fiber preform
  • Preparation method and preparation equipment of optical fiber preform

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preparation example Construction

[0035] Such as figure 1 As shown, the preparation method of the optical fiber preform in this embodiment includes the following steps:

[0036] (1) Loading an optical fiber preform raw material ingot made of a chalcogenide glass material into an optical fiber preform mold;

[0037] (2) Heating the optical fiber preform raw material ingot in the optical fiber preform mold, and adjusting and controlling the heating temperature in real time:

[0038] Wherein, since the raw material ingot of the optical fiber preform is made of different materials, such as chalcogenide glass or high-temperature plastic, the heating temperature variation curve of the optical fiber preform is different. Therefore, in this step, the heating operation of the raw material ingot of the optical fiber preform includes at least a preheating process, a heating process and an annealing process, wherein:

[0039] The preheating process is responsible for preheating the optical fiber preform raw material ing...

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Abstract

The invention relates to a preparation method and preparation equipment of optical fiber preform. The preparation method comprises the following steps: after precisely heating an optical fiber preform material ingot, setting the upper alarm limit and the lower alarm limit of extrusion force, acquiring and controlling the extrusion force applied to the optical fiber preform material ingot in real time, when formed optical fiber preform is discharged from the outlet of an optical fiber preform mold, annealing, clamping and dragging the formed optical fiber perform until the formed optical fiber preform is dragged downwards and meets an expected target length, thereby obtaining an expected optical fiber preform product. By adopting the preparation method, the optical fiber preform is prevented from being bent, precise control on the preparation process of the optical fiber preform is achieved, and the preparation efficiency of the optical fiber perform is improved.

Description

technical field [0001] The invention relates to the field of preparation of optical fiber preforms, in particular to a preparation method and equipment for optical fiber preforms. Background technique [0002] Optical fiber, also known as optical fiber, is a fiber made of glass or plastic that can be used as a communication transmission tool. made of quartz glass (SiO 2 ) made of silica fiber plays a vital role in the field of communication. However, with the continuous extension and deepening of research and application fields, a number of special optical fibers with special substrates, special structures, and special optical properties have been discovered one after another. These optical fibers have great potential application value in sensing, infrared transmission and other fields. As the core raw material for manufacturing optical fibers, optical fiber preforms can be drawn into optical fibers with a specific rod-like structure. When manufacturing an optical fiber, ...

Claims

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Application Information

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IPC IPC(8): C03B37/07C03B37/012
Inventor 王训四刘永兴张培全戴世勋沈祥聂秋华徐铁峰朱敏鸣姜晨
Owner NINGBO UNIV
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