Yb<3+> doped fluorine phosphorous glass with high crystallization stability and preparing method thereof
A stability and crystallization technology, which is applied in the field of Yb3+ fluorophosphorus-doped glass with high crystallization stability and its preparation, can solve the problems of increased loss and achieve the effects of reduced loss, simple glass composition, and high crystallization stability
Inactive Publication Date: 2008-09-24
CHINA JILIANG UNIV
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[0004] The object of the invention is to provide a kind of doping Yb with high devitrification stability performance 3+ Fluorophosphorus glass and its preparation method, to overcome the existing fluoride or fluorophosphorus glass, which is easy to devitrify during glass preparation and optical fiber drawing process and multi-component caused by component segregation in the optical fiber drawing process after preform reheating The problem of increased loss
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preparation example Construction
[0017] Yb doped 3+ The preparation method of fluorophosphorus glass, the steps are as follows:
[0018] Weigh the powders of each component according to the molar percentage content, mix the powdered raw materials evenly into a platinum crucible with a platinum cover, and melt them in a silicon-carbon rod electric furnace. The melting temperature is controlled at 1000-1050°C to reduce volatilization. Cover the entire sleeve with a large quartz cover. After the glass is completely melted, cool down to about 950℃ for clarification and homogenization for ten minutes, then pour the glass liquid into the preheated iron mold, and quickly put it into the muffle furnace that has been heated to its glass transition temperature (Tg) , After holding for 2 hours, annealing at a rate of 5°C / hour to 80-120°C, then turn off the muffle furnace and cool down to room temperature.
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Abstract
The present invention discloses Yb<3+> fluorophosphate glass, which contains, in mole percent, MgF2: 22, Baf2: 32 to 52, PbF2: 5 to 25, Al (PO3)3: 20, and YbF3: 1. The preparation method is stated as follows: according to the formulation, the powder of every component is melted to be the glass melting liquid after the uniform mixing and is poured on a mould, and is placed into a muffle with the temperature increased to the transformation temperature of the glass for the temperature conservation for two hours, and then is annealed to 80 to 120 DEG C with the temperature decreasing speed of 5 DEG C per hour, and then is cooled to the room temperature. The glass component of the present invention is simple, the preparation craftwork is simple, and the cost is low. The glass has high devitrification stable performance, and the spectrum performance is good. The glass is very applicable to producing the optical-fiber pre-fabrication rod and to performing the optical-fiber drawing, and is also applicable to be used as the basic material for other rare mixed laser glass.
Description
Technical field [0001] The present invention relates to Yb-doped 3+ Fluoro-phosphorus glass, especially Yb3+-doped fluoro-phosphorus glass with high crystallization stability and a preparation method thereof. Background technique [0002] The loss caused by the material is one of the important factors of optical fiber loss. The key issue of optical fiber loss is whether the optical fiber has a high degree of uniformity in its axial composition, except for the scattering and absorption loss caused by the existence of various defects in the optical fiber, such as crystallites, bubbles, fringes, or platinum particles precipitated during melting, or Whether it is uniform or not is another important factor that determines fiber loss and practical application value. Glass is a liquid and a multi-component substance. Therefore, there are scattering caused by density fluctuations and scattering caused by concentration fluctuations. Therefore, even multi-component glass with good crystall...
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IPC IPC(8): C03C10/02
Inventor 张丽艳徐时清
Owner CHINA JILIANG UNIV
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