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Full-gas-phase doping device and doping method for preparing rare earth doped optical fiber

A rare earth doping and gas phase doping technology, which is applied in the field of optical fiber, can solve problems such as difficult to meet the requirements of optical fiber characteristics, and achieve the effect of ensuring longitudinal uniformity

Active Publication Date: 2020-06-05
成都翱翔拓创光电科技合伙企业(有限合伙)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The published rare-earth-doped optical fiber preform production method has been difficult to meet the requirements of the current high-power laser development for optical fiber characteristics

Method used

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  • Full-gas-phase doping device and doping method for preparing rare earth doped optical fiber
  • Full-gas-phase doping device and doping method for preparing rare earth doped optical fiber
  • Full-gas-phase doping device and doping method for preparing rare earth doped optical fiber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0080] Example 1: Preparation of ytterbium-doped optical fiber preform with a core diameter of 4mm

[0081] The Yb chelate (C 33 h 63 wxya 6 ) raw materials are filled into the rare earth doped raw material evaporation chamber 112, and the N 2 In the case of dry storage, the quartz glass substrate tube 116 is welded with the gas mixing system, and the first heating furnace (graphite heating circuit) 111 is opened to heat the rare earth doping raw material evaporation chamber 112 to 210 ° C, so that the rare earth doping raw material It can be liquefied and stabilized for 30 minutes, and the temperature of the first heating furnace 111 is lowered to lower the temperature of the evaporation chamber 112 of the rare earth doped raw material so that the doped raw material is cooled and an anhydrous solid layer is formed.

[0082] Polishing gas SF 6 Pass through the gas mixing system, ignite the second heating furnace (hydrogen-oxygen flame heating furnace) 115 to heat the quart...

Embodiment 2

[0090] Example 2: Preparation of ytterbium-aluminum-phosphorus co-doped optical fiber preform

[0091] YbCl 3 The raw material is filled into the rare earth doped raw material evaporation chamber 112 . In access N 2 In the case of dry storage, the quartz glass substrate tube 116 is welded with the gas mixing system, the first heating furnace (graphite heating furnace) 111 is turned on, and the rare earth doping raw material evaporation chamber 112 is heated to 210 ° C, so that the rare earth doping The raw material can be liquefied and stabilized for 30 minutes, and the temperature of the second heating furnace 112 is lowered to lower the temperature of the rare earth doped raw material evaporation chamber 112 to cool the doped raw material and form an anhydrous solid layer.

[0092] Polishing gas SF 6 Through the gas mixing system, the second heating furnace (hydrogen-oxygen flame heating furnace) 115 is ignited to heat the quartz glass substrate tube to 1700°C, and the dr...

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Abstract

The invention discloses a full-gas-phase doping device and a doping method for preparing a rare earth doped optical fiber. The device comprises a gasification system, a gas-phase mixing system and a gas-phase settling system, wherein the gasification system comprises a plurality of heating gasification units; the heating gasification units heat and gasify the raw materials and transmit the gasified raw materials to the gas-phase mixing system; the gas phase mixing system comprises three paths of gas inlet units, a rare earth doped raw material evaporation unit and a gas mixing area; the gas phase settling unit comprises a quartz glass substrate tube which is connected with the output end of the rare earth doped raw material evaporation chamber and is communicated with the gas mixing area,and a second heating furnace for movably heating the quartz glass substrate tube; and the quartz glass substrate tube and the rare earth doped raw material evaporation chamber are respectively fixed through a rotary base and can rotate around respective central shafts. According to the method, the full-gas-phase doping device for preparing the rare earth doped optical fiber is adopted for preparing the rare earth doped optical fiber. A rare earth chelate is used as a doping raw material, the doping concentration is improved, and the doping uniformity is ensured.

Description

technical field [0001] The invention relates to the field of optical fiber technology, and more specifically, relates to an all-gas-phase doping device and a doping method for preparing rare earth-doped optical fibers. Background technique [0002] Fiber lasers are a new generation of lasers following chemical lasers, gas lasers and solid-state lasers. In recent years, fiber lasers, especially high-power fiber lasers, have attracted more and more attention and have been widely used in medical treatment, industrial cutting and welding, scientific research, and national defense. [0003] As fiber lasers are widely used in different fields, new requirements are put forward for their optical performance. As far as high-power fiber lasers are concerned, in order to increase the output power while controlling the beam quality, the rare earth-doped gain fiber used is required to have low loss, high pump light absorption efficiency, high longitudinal and radial uniformity, Feature...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/018
CPCC03B37/018C03B37/01815Y02P40/57
Inventor 林傲祥倪力俞娟
Owner 成都翱翔拓创光电科技合伙企业(有限合伙)