Optical fiber and preparation method thereof

An optical fiber and fiber core technology, applied in the field of optical fiber and its preparation, can solve the problems of poor bending resistance, aggravating the fragility of the optical fiber, and fewer single-core fibers, so as to reduce the internal stress, improve the cross-linking density, and improve the bending resistance performance. Effect

Active Publication Date: 2021-11-26
深圳纤亿通科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003]At present, the outer diameter of the optical fiber for communication is generally between 125 microns and 140 microns, and the inner diameter of the optical fiber is 9 microns. The number of core fibers is less and the transmission speed is slower
Reducing the size of the optical fiber, especially reducing the inner diameter of the optical fiber to 5 microns or less, will exacerbate the fragility of the optical fiber and poor bending resistance, and it will easily break when bent at a small angle, which will easily cause signal loss and transmission interruption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example 1-7

[0039]The following is illustrated by taking Preparation Example 1 as an example, wherein the photoinitiator is (2,4,6-trimethylbenzoyl) diphenylphosphine oxide, and the CAS number is 75980-60-8; the solvent It is a mixture of diacetone alcohol (CAS No. 123-42-2), n-butyl acetate and propyl acetate, and the mass ratio of diacetone alcohol, n-butyl acetate and propyl acetate is 1:2:2; The grade of the six-functional aliphatic urethane acrylate is GN8601, purchased from Hunan Unico Chemical Technology Co., Ltd.; the grade of the hydroxyacrylate resin is FX-965, purchased from Nantong Fangxin Chemical Co., Ltd.; The oxyacrylate is bisphenol A epoxy acrylate, the grade is FX-8002-80, purchased from Fangxin Resin Technology Co., Ltd.; the additive is a mixture of Silok®355 silicone leveling agent and YWA-defoamer , the mass ratio of Silok®355 organic silicon leveling agent and YWA-defoamer is 2:1, and the Silok®355 organic silicon leveling agent is purchased from Shandong Moore Che...

preparation example 1

[0041] Preparation example 1 provides a kind of preparation method that contains the silicone rubber of UV curing coating, and its preparation steps are:

[0042] (1) Mix 0.06g photoinitiator and 2g solvent and stir evenly;

[0043] (2) Add 1.25g of hexafunctional aliphatic urethane acrylate, 2.5g of hydroxyacrylate resin and 1g of epoxy acrylate, and mix well;

[0044] (3) Add 0.003g additive, stir well, then add 3g solvent;

[0045] (4) Add 0.25 g of aliphatic urethane acrylate containing NCO groups before coating the surface with methyl vinyl phenyl silicone rubber to obtain a UV-curable coating;

[0046] (5) Coat the surface of 20 g of methyl vinyl phenyl silicone rubber with UV-curable coating to obtain silicone rubber containing UV-curable coating.

[0047] As shown in Table 1, the silicone rubbers containing UV-curable coatings of Preparation Examples 1-6 differ only in the quality of their raw materials.

[0048] Table 1

[0049] Preparation Example 1 ...

preparation example 8-11

[0050] Preparation Examples 8-11 are the same as Preparation Example 3, except that the raw materials for the preparation of silicone rubber containing UV-curable coatings are different:

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Abstract

The invention relates to the technical field of optical fibers, in particular to an optical fiber and a preparation method thereof. From inside to outside, the optical fiber comprises a fiber core, a cladding and a coating layer, and is characterized in that the diameter of the fiber core is not greater than 5 microns, and the outer diameter of the coating layer is not greater than 70 microns; the cladding adopts a germanium-doped silicon layer; the coating layer is made of silicone rubber containing an ultraviolet curing coating. According to the optical fiber provided by the invention, in a pipeline with the same size, the number of the optical fibers can be increased, the signal transmission efficiency is remarkably improved, and the bending resistance and wear resistance are improved while the diameter of the single-core optical fiber is reduced.

Description

technical field [0001] The present application relates to the field of optical fiber technology, in particular to an optical fiber and a preparation method thereof. Background technique [0002] Optical fiber, referred to as optical fiber, is a light transmission tool that utilizes the total reflection of light in a fiber made of glass or plastic to guide light. Compared with the conduction of electricity in wires, the conduction loss of light in optical fibers is low and the frequency bandwidth is wide. Therefore, optical fiber is widely used as a long-distance signal transmission medium. [0003] At present, the outer diameter of the optical fiber for communication is generally between 125 microns and 140 microns, and the inner diameter of the optical fiber is 9 microns, which is relatively large in size, and the number of single-core optical fibers placed in the duct is small, and the transmission speed is relatively slow. Reducing the size of the optical fiber, especia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/027C03B37/014C03C25/40C03C25/50C03C25/285C03C25/1065G02B6/02
CPCC03B37/027C03B37/014C03B37/01446C03C25/40C03C25/50C03C25/285C03C25/1065G02B6/02G02B6/02395C03B2207/36C03B2205/42C03B2203/32
Inventor 覃施敏吴桐
Owner 深圳纤亿通科技有限公司
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