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Manufacture method of blast lamp and mandril

A blowtorch and mandrel technology, applied in the direction of manufacturing tools, glass manufacturing equipment, glass deposition furnace, etc., can solve the problems affecting the transmission speed and quality, the deviation of optical parameters exceeds the standard, and affect the optical performance of single-mode optical fiber, etc., to improve the refractive index Distribution, the effect of increasing the deposition rate

Active Publication Date: 2019-01-15
ZHONGTIAN TECH ADVANCED MATERIALS CO LTD +1
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AI Technical Summary

Problems solved by technology

[0010] The core refractive index profile deposited by this blowtorch has a certain slope at its boundary, which will affect the optical performance of the single-mode fiber, especially the dispersion wavelength, which affects its transmission speed and quality, and is easy to form during the drawing process. The deviation of optical parameters exceeds the standard

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  • Manufacture method of blast lamp and mandril
  • Manufacture method of blast lamp and mandril
  • Manufacture method of blast lamp and mandril

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Embodiment Construction

[0044] Before describing the present invention, it should be noted that the present invention is not limited to the specific embodiments described below. Those skilled in the art can understand that without departing from the spirit of the claims of the present invention, changes and modifications can be made to the specific embodiments described below.

[0045] figure 1 and figure 2 It is a schematic diagram and a cross-sectional view of a traditional four-layer blowtorch in the VAD mandrel deposition process, respectively. exist figure 1 and figure 2 Among them, a conventional four-layer blowtorch is formed by a central tube 14 and three outer tubes 15, 16, 17 surrounding the central tube, which are arranged sequentially from the inside to the outside. The central tube 14 and the three outer tubes 15, 16, 17 are all provided with feeding ports, namely including the first feeding port 10, the second feeding port 11, the third feeding port 12 and the fourth feeding port ...

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Abstract

The invention provides a blast lamp. The blast lamp comprises an inner tube and an outer tube which sleeves the inner tube. The outer tube has an outer tube opening, and the inner tube has an inner tube opening. The inner tube opening on the axial direction of the blast lamp is lower than the outer tube opening. The outer tube opening and the inner tube opening are used for ejecting raw gas for acombustion reaction. The invention also provides a method for manufacturing a mandrel by vapor deposition using the blast lamp. The problem of low slope at both sides of the refractive index distribution of the fiber optic mandril can be effectively improved. Therefore, fiber optic transmission quality is enhanced, over-limit ratio of optical parameters of optical fiber is reduced, and the deposition rate is high.

Description

technical field [0001] The invention relates to the field of manufacturing optical fiber prefabricated rods, in particular to a blowtorch suitable for manufacturing single-mode optical fiber prefabricated rod core rods by VAD method and a method for depositing single-mode optical fiber prefabricated rod core rods by using the blowtorch. Background technique [0002] With the development of optical fiber preform technology, the more mature preform core rod preparation methods mainly include axial vapor deposition (VAD), modified chemical vapor deposition (MCVD), and plasma chemical vapor deposition (MCVD). . [0003] The equipment for manufacturing core rods by VAD method is mainly composed of five parts: reaction chamber, blowtorch, raw gas supply part, powder rod rotating and lifting part and PC. Among them, the blowtorch is one of the most critical components, and its function is to spray out SiCl 4 / GeCl 4 / H 2 / O 2 Mixed gas such as combustion and hydrolysis reactio...

Claims

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Application Information

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IPC IPC(8): C03B37/014
CPCC03B37/0142C03B2207/06C03B2207/12C03B2207/20
Inventor 秦钰沈一春钱宜刚
Owner ZHONGTIAN TECH ADVANCED MATERIALS CO LTD
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