Special optical fiber with high corrosion resistance

Abstract

The invention provides a special optical fiber with high corrosion resistance. The special optical fiber is prepared by doping aluminum@graphene with a polymer to prepare a fiber core preform, and carrying out cladding material coating, annealing and stretching, wherein the aluminum@graphene is composed of spherical aluminum powder and graphene, the polymer is polytetrafluoroethylene, and the cladding material is a polytetrafluoroethylene tube. The optical fiber has the beneficial effects that the aluminum surface reacts with oxygen to generate a compact oxidation film, and remaining aluminum is prevented from further reacting, so that the corrosion-resistant effect is achieved; the graphene has lipophilicity and hydrophobicity, so that the corrosion resistance of the optical fiber in a humid environment can be enhanced; and the aluminum@graphene and the polytetrafluoroethylene synergistically enhance the corrosion resistance of the optical fiber.

Description

technical field [0001] The invention relates to the technical field of optical fibers, in particular to a highly corrosion-resistant special optical fiber. Background technique [0002] Optical fiber refers to optical fiber, which is a fiber made of glass or plastic, which can be used as a light transmission tool. The transmission principle is "total reflection of light". It is no longer difficult to use optical cables made of glass optical fibers to cross mountains and rivers. However, there are almost insurmountable obstacles when using glass optical fiber to enter the home. This is mainly because the glass optical fiber is generally only a few microns, so it requires high technology in the interface and other aspects, and the interface cost is expensive, which is difficult for users to accept. The use of plastic optical fiber for optical information transmission has the advantages of large diameter, light weight, easy processing, low cost, and good flexibility. [0003] ...

AI Technical Summary

Problems solved by technology

[0002] Optical fiber refers to optical fiber, which is a kind of fiber made of glass or plastic, which can be used as a light transmission tool. The transmission principle is "total reflection of light". It is no longer difficult for optical fiber cables made of glass optical fibers to cross mountains and rivers, but there are almost insurmountable obstacles when using glass optical fibers to enter the home. High technology, and the cost of the interface is expensive, it is difficult to be accepted by users, and the plastic optical fiber used for optical information transmission has the advantages of large diameter, light weight, easy processing, low cost, good flexibility, etc.

[0003] Chinese Patent Publication No. CN106125192B discloses an ultra-low loss large effective area optical fiber and its preparation process, including core layer and cladding layer from inside to outside As well as the coating, the core layer is a pure silica glass layer with a radius of 5-7 μm, the inner cladding is a fluorine-doped inner cladding with a radius r2 of 5-12 μm, and the middle cladding radius r3 is 12-25 μm. The outer cladding layer is a pure quartz glass layer, its radius r4 is 25-45 μm, and the coating material is polyacrylate, including an inner coating and an outer coating. The diameter of the inner coating is 192 μm, and the diameter of the outer coating is 245 μm. The process includes preform preparation, optical fiber melting and annealing process, and optical fiber drawing and curing process. The strain of the optical fiber can reach 2% or more, but the corrosion resistance of the optical fiber is poor, and it is urgent to develop new materials to improve the corrosion resistance of the optical fiber.

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