Optical fiber preform melting forming method and manufacturing equipment thereof

Abstract

The invention relates to the technical field of optical fiber communication material preparation, in particular to an optical fiber preform melting forming method and manufacturing equipment thereof.The manufacturing equipment comprises a tower, an end sealing device, a vacuumizing pipeline, a quartz sand filling pipeline, a propelling device, a heating furnace, a clamping traction device, an optical fiber preform cooling device and a diameter measuring instrument, wherein the heating furnace is mounted on the tower, the propelling device is mounted on the tower above the heating furnace, theclamping device is mounted below the heating furnace, and the optical fiber preform cooling device is mounted below the clamping device; the end sealing device is mounted at the upper end part of aquartz sleeve, and thevacuumizing pipeline and thequartz sand filling pipeline are arranged on the endsealing device and are respectively used for vacuumizing the quartz sleeve and filling high-purity quartz sand into the quartz sleeve; a diameter measuring instrument is arranged at the lower part of an outlet of the heating furnace and is used for measuring and controlling the outer diameter of adrawn optical fiber preform through a sensor.

Description

technical field [0001] The invention relates to the technical field of preparation of optical fiber communication materials, in particular to a method for melting and forming an optical fiber preform rod and its manufacturing equipment. Background technique [0002] The optical fiber preform is composed of a high-purity core rod in the middle and a high-purity silica cladding on the outside, and is the raw material for drawing optical fibers. [0003] When light passes through the drawn optical fiber, most of the light is transmitted from the core layer due to the difference in refractive index between the core layer and the outer cladding layer. [0004] At present, most of the optical fiber preforms are manufactured by vapor phase forming method. When the optical fiber pre-rod is manufactured by the vapor phase forming method, the equipment investment and maintenance costs are expensive, the process is complicated, and the production efficiency is low, resulting in high m...

AI Technical Summary

Problems solved by technology

[0009] The currently used optical fiber preform molding process has problems such as expensive equipment investment and maintenance costs, complex process, and low production efficiency, which is very unfavorable for the promotion and development of this technology and industry

[0010] At the same time, due to the high production cost, the price of the final produced optical fiber and cable products is directly raised.

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