Irradiation-resistant erbium-doped optical fiber preform rod based on fluorine-doped cladding and preparation method of irradiation-resistant erbium-doped optical fiber preform rod

An erbium-doped fiber, radiation-resistant technology, applied in glass manufacturing equipment, manufacturing tools and other directions, can solve the problems that the nano-particle doping technology cannot be realized, reduce the radiation sensitivity of the erbium-doped fiber, and the high content of co-dopants, and achieve Reduce background transmission loss, reduce radiation sensitivity, and maintain stable effects

Active Publication Date: 2022-07-05
XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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Problems solved by technology

[0005] The invention provides a radiation-resistant erbium-doped optical fiber preform based on a fluorine-doped cladding and a preparation method thereof, which solves the problem of poor radiation resistance caused by the high content of co-dopants in the existing erbium-doped optical fiber or that the nanoparticle doping technology cannot realize Er 3+ The technical problem of high-concentration doping effectively reduces the radiation sensitivity of erbium-doped optical fiber, so that it can better meet the application requirements of the space radiation environment

Method used

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  • Irradiation-resistant erbium-doped optical fiber preform rod based on fluorine-doped cladding and preparation method of irradiation-resistant erbium-doped optical fiber preform rod
  • Irradiation-resistant erbium-doped optical fiber preform rod based on fluorine-doped cladding and preparation method of irradiation-resistant erbium-doped optical fiber preform rod
  • Irradiation-resistant erbium-doped optical fiber preform rod based on fluorine-doped cladding and preparation method of irradiation-resistant erbium-doped optical fiber preform rod

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Experimental program
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Effect test

Embodiment 1

[0043] The germanium-fluorine co-doped quartz tube and the fluorine-doped quartz tube with a quartz layer on the outer surface were prepared by plasma chemical vapor deposition method. The germanium and fluorine co-doped quartz tubes are arranged from the inside to the outside as the transition layer 3 and the pure quartz layer, and the outer diameter ratio is 1:1.1. Layer 5, its outer diameter ratio is 1:1.15; the absolute refractive index of transition layer 3 and fluorine-doped quartz layer 4 are equal, and the relative refractive index difference between the two and pure quartz is Δn 1 Both are 0.015. Electron probe test results show that the composition and content of transition layer 3 are SiO 2 : 94.6Wt.%, GeO 2 : 1.3Wt.%, F: 4.1Wt.%; the composition and content of the fluorine-doped quartz layer 4 are SiO respectively 2 : 96.4Wt.%, F: 3.6Wt.%.

[0044] Using the above-mentioned germanium-fluorine co-doped silica tube as the deposition liner, the erbium-doped optica...

Embodiment 2

[0049] The deposition method of the erbium-doped optical fiber core rod, the size of the preform, the processing method of the sleeve, and the optical fiber structure are all the same as those in the first embodiment. The difference is the relative refractive index difference Δn between the transition layer 3 in the germanium-fluorine co-doped quartz tube, the fluorine-doped quartz layer 4 in the fluorine-doped quartz tube and the pure quartz layer 1 are 0.007; the deposition temperature is 1900°C, the rotational speed is 30rpm / min, the moving speed of the oxyhydrogen flame is 90mm / min, and the settings of the reaction materials are different when depositing the core area, as shown in Table 3. Electron probe test results show that the composition and average content of the central erbium-doped region 1 are SiO 2 : 95.0Wt.%, Er 2 O 3 : 1.2Wt.%, Al 2 O 3 : 2.3Wt.%, Ce 2 O 3 : 1.5Wt.%; the composition and average content of the non-erbium-doped region 2 are SiO 2 : 95.0Wt....

Embodiment 3

[0053] The deposition method of the erbium-doped optical fiber core rod, the sleeve processing method, and the optical fiber structure are all the same as those in the first embodiment. The difference is the relative refractive index difference Δn between the transition layer 3 in the germanium-fluorine co-doped quartz tube, the fluorine-doped quartz layer 4 in the fluorine-doped quartz tube and the pure quartz layer 1 All are 0.0142; the deposition temperature is 1750°C, the rotational speed is 30rpm / min, the moving speed of the oxyhydrogen flame is 100mm / min, and the settings of the reaction materials are different when depositing the core area, as shown in Table 4. Electron probe test results show that the composition and average content of the central erbium-doped region 1 are SiO 2 : 97.95Wt.%, Er 2 O 3 : 0.37Wt.%, Al 2 O 3 : 0.68Wt.%, Ce 2 O 3 : 1.0Wt.%; the composition and average content of the non-erbium-doped region 2 are SiO 2 : 97.5Wt.%, GeO 2 : 2.5Wt.%; th...

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Abstract

The invention relates to an optical fiber preform manufacturing technology, in particular to an irradiation-resistant erbium-doped optical fiber preform based on a fluorine-doped cladding and a preparation method of the irradiation-resistant erbium-doped optical fiber preform. The technical problems that the irradiation resistance is poor due to the fact that the content of an existing erbium-doped optical fiber co-doping agent is high, and Er < 3 + > high-concentration doping cannot be achieved through a nano-particle doping technology are solved. The irradiation-resistant erbium-doped optical fiber preform based on the fluorine-doped cladding comprises a core region, and the fluorine-doped cladding and a pure quartz barrier layer which sequentially coat the outer surface of the core region from inside to outside, wherein the value range of the relative refractive index difference delta n1 between the fluorine-doped cladding and the pure quartz barrier layer is 0.007-0.020; the core region sequentially comprises a central erbium-doped region and a non-erbium-doped region from inside to outside; the fluorine-doped cladding sequentially comprises a transition layer and a fluorine-doped quartz layer from inside to outside; the refractive index of the transition layer is equal to that of the fluorine-doped quartz layer, and the value range of the relative refractive index difference delta n between the core region and the fluorine-doped cladding is 0.013-0.021. Meanwhile, the invention also provides a preparation method of the radiation-resistant erbium-doped optical fiber preform.

Description

technical field [0001] The invention relates to an optical fiber preform manufacturing technology, in particular to a radiation-resistant erbium-doped optical fiber preform based on a fluorine-doped cladding layer and a preparation method thereof. Background technique [0002] With the continuous improvement of communication requirements in space fields such as satellite networking, constellation planning, and deep space exploration, traditional radio communication has been unable to meet the large-bandwidth, high-speed, and real-time communication needs of human space exploration due to bandwidth limitations. Space laser communication technology has become the development direction of future space links due to its extremely high transmission rate, large communication capacity, good confidentiality, no need for radio frequency licenses, small size, and light weight. One of the hotspots of world research. As a key component of space laser communication system, erbium-doped f...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C03B37/014
CPCC03B37/01453C03B37/014Y02P40/57
Inventor 折胜飞侯超奇郭海涛高菘张岩李艺昭李万航
Owner XI'AN INST OF OPTICS & FINE MECHANICS - CHINESE ACAD OF SCI
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