A kind of preparation method of high-strength silica optical fiber

A quartz optical fiber, high-strength technology, used in glass manufacturing equipment, manufacturing tools, etc., can solve the problem that the strength of the quartz optical fiber cannot meet the needs of high-strength applications, and achieve the purpose of preventing the expansion of micro-cracks, reducing internal stress, and reducing internal stress. Effect
CN113213748BActive Publication Date: 2022-05-06XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
Publication Date
2022-05-06

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Abstract

The invention relates to a preparation method of silica optical fiber, in particular to a preparation method of high-strength silica optical fiber, which is used to solve the disadvantage that the strength of the existing silica optical fiber cannot meet the requirements of special application occasions. The preparation method of the high-strength silica optical fiber comprises the following steps: firstly, mechanically polishing a quartz preform with a diameter of 20-35 mm, the roughness after polishing is 6-8 μm, and then performing flame polishing, and the roughness after polishing is 4-6 μm , and then gradually reduce the heating temperature by gradually reducing the flow rate of hydrogen in the oxyhydrogen flame. After stopping the heating, let the quartz preform stand at room temperature, pickle the quartz preform and then draw it. The drawing speed is 3-10m / min , while annealing the bare optical fiber output from the exit of the drawing furnace, the length of the annealing section is 600mm, the annealing temperature is 300-500°C, and finally the bare optical fiber is coated.
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Description

technical field

[0001] The invention relates to a preparation method of silica optical fiber, in particular to a preparation method of high-strength silica optical fiber. Background technique

[0002] Optical fiber materials have been favored by many researchers because of their advantages such as light weight, small size, anti-electromagnetic interference, and large transmission information capacity, and are widely used in various fields such as electronics, medical treatment, bioengineering, material processing, and sensing technology. However, for some special applications, the brittleness of the existing silica fiber leads to its poor mechanical strength and is easy to break. Therefore, the development of high-strength silica fiber is the key to further develop the application field of silica fiber. Contents of the invention

[0003] The purpose of the present invention is to solve the deficiency that the strength of the existing silica optical fiber cannot meet the re...

Claims

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