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1. WO2020220924 - ACTIVE MICROCRYSTALLINE OPTICAL FIBER PREPARATION METHOD AND DEVICE

Publication Number WO/2020/220924
Publication Date 05.11.2020
International Application No. PCT/CN2020/082912
International Filing Date 02.04.2020
IPC
C03B 37/027 2006.01
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL; SUPPLEMENTARY PROCESSES IN THE MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR SLAG WOOL
37Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
01Manufacture of glass fibres or filaments
02by drawing or extruding
025from reheated softened tubes, rods, fibres or filaments
027Fibres composed of different sorts of glass, e.g. fibre optics
G02B 6/02 2006.01
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
02Optical fibre with cladding
CPC
C03B 37/027
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
37Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
01Manufacture of glass fibres or filaments
02by drawing or extruding, ; e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
025from reheated softened tubes, rods, fibres or filaments ; , e.g. drawing fibres from preforms
027Fibres composed of different sorts of glass, ; e.g. glass optical fibres
C03B 37/10
CCHEMISTRY; METALLURGY
03GLASS; MINERAL OR SLAG WOOL
BMANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
37Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
10Non-chemical treatment
G02B 6/02295
GPHYSICS
02OPTICS
BOPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
6Light guides
02Optical fibre with cladding ; with or without a coating
02295Microstructured optical fibre
Applicants
  • 上海大学 SHANGHAI UNIVERSITY [CN]/[CN]
Inventors
  • 文建湘 WEN, Jianxiang
  • 刘正 LIU, Zheng
  • 王廷云 WANG, Tingyun
  • 董艳华 DONG, Yanhua
  • 庞拂飞 PANG, Fufei
  • 赵子文 ZHAO, Ziwen
  • 陈振宜 CHEN, Zhenyi
Agents
  • 贵阳睿腾知识产权代理有限公司 GUIYANG RUITENG INTELLECTUAL PROPERTY AGENCY CO, LTD.
Priority Data
201910365060.630.04.2019CN
Publication Language Chinese (ZH)
Filing Language Chinese (ZH)
Designated States
Title
(EN) ACTIVE MICROCRYSTALLINE OPTICAL FIBER PREPARATION METHOD AND DEVICE
(FR) PROCÉDÉ ET DISPOSITIF DE PRÉPARATION DE FIBRE OPTIQUE MICROCRISTALLINE ACTIVE
(ZH) 一种有源微晶光纤的制备方法及装置
Abstract
(EN)
An active microcrystalline optical fiber preparation method, an optical fiber, and a preparation device thereof. In said method, a preform (1) is placed in a drawing furnace (2) for drawing; a drawn optical fiber in an uncoated state is processed by means of a laser processing technology under the effect of magnetic field induction; and a laser beam acts on the optical fiber after being focused and shaped, so as to obtain an active microcrystalline optical fiber (5) after laser processing and recrystallization. The appropriate laser processing power has direct influence on the structure, type, crystallinity, grain size, and content of crystal and the amount of glass residual phase in a silicate glass optical fiber. The application of magnetic field induction changes the thermodynamics and dynamics of the crystallization process, making the distribution of the grain size of the obtained crystal more uniform, reducing aggregation, and making the grain size smaller.
(FR)
L'invention concerne un procédé de préparation de fibre optique microcristalline active, une fibre optique et un dispositif de préparation associé. Selon ledit procédé, une préforme (1) est placée dans un four d'étirage (2) pour l'étirage ; une fibre optique étirée dans un état non revêtu est traitée au moyen d'une technologie de traitement laser sous l'effet de l'induction de champ magnétique ; et un faisceau laser agit sur la fibre optique après avoir été focalisé et façonné, de façon à obtenir une fibre optique microcristalline active (5) après traitement laser et recristallisation. La puissance de traitement laser appropriée a une influence directe sur la structure, le type, la cristallinité, la taille de grain et la teneur en cristal et la quantité de phase résiduelle de verre dans une fibre optique en verre de silicate. L'application de l'induction de champ magnétique modifie la thermodynamique et la dynamique du processus de cristallisation, ce qui rend la distribution de la taille de grain du cristal obtenu plus uniforme, réduit l'agrégation et diminue la taille de grain.
(ZH)
一种有源微晶光纤的制备方法及光纤及其制备装置,将预制棒(1)放置于拉丝炉(2)中进行拉丝,拉制出的光纤在未涂覆状态下引入磁场诱导作用并结合激光处理技术,激光光束经过聚焦整形作用在光纤上,经激光处理再结晶后获得有源微晶光纤(5)。合适的激光处理功率直接影响着硅酸盐玻璃光纤中晶体结构、种类、结晶度、晶粒尺寸、含量和玻璃残余相的多少。外加磁场诱导,改变了结晶过程的热力学与动力学,使得到的晶体粒度分布更佳均匀,减小了凝聚现象,使得晶粒尺寸更小。
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