微观结构调控对铋离子掺杂玻璃的超宽带近红外发光的影响及其机理研究

项目名称： 微观结构调控对铋离子掺杂玻璃的超宽带近红外发光的影响及其机理研究

项目编号： No.61307111

项目类型： 青年科学基金项目

立项/批准年度： 2014

项目学科： 无线电电子学、电信技术

项目作者： 周大成

作者单位： 昆明理工大学

项目金额： 23万元

中文摘要： 铋离子掺杂玻璃具有近红外超宽带发光特性，有望实现在整个光通讯波段的光放大。然而由于其发光机制以及玻璃结构对其近红外发光性能的影响机制并不完全清楚，一定程度上制约了其实际应用。本项目以开发新型铋离子掺杂超宽带光放大器用材料为主要研究目标，通过调节玻璃基质的网络形成体与网络修饰体成分实现对玻璃中多面体基本单元结构、多面体结构连接方式以及多面体结构的聚合状态等微观结构的调控，研究铋离子掺杂玻璃近红外超宽带发光性能与玻璃微结构之间的相互关系，探索铋离子在玻璃中的赋存状态、近邻结构和分布形态对发光及光放大特性的影响规律，探究铋离子掺杂玻璃的近红外宽带发光的外在调控方法和内在物理机制。进而通过玻璃基质微观结构与铋离子近红外光放大增益特性之间关系的研究，设计优化玻璃组成、实现整个光通讯波段的超宽带光放大。本项目的研究成果可为铋离子掺杂玻璃近红外超宽带光放大材料的应用提供新的研究思路和理论依据。

中文关键词： 玻璃结构；超宽带；铋离子；近红外发光；硅酸盐玻璃

英文摘要： Since Bi-doped materials have outstanding performance with NIR ultra-broadband emission,they are promise for achieving ultra-broadband optical amplification in full communication band by a single wavelength pump. However, the practical application of these materials is restricted, because the origin for the ultra-broadband emission, and the effect on the NIR emission property caused by the glass structure have not been clarified. The main goal of this study is to develop new bismuth-doped glasses, which can be used to prepare optical amplifier.The effect of glass matrix structure on bismuth ions broadband photoluminescence will be investigated by the adjustment of the microstructure of the glass matrix. The effect of the bismuth ions with different occurrence state, local structural and distribution form on the infrared luminescence will be investigated. Furthermore, the external regulation method in the near infrared luminescence of bismuth ion doping glass and internal physical mechanism will be discussed. In the glass system, influence of different compositions and the glass micro-structural on the broadband luminescence of bismuth ions have been realized. These studies will be provide certain theoretical basis for bismuth ion doping glass near infrared ultra-broad luminescence amplification materials in the

英文关键词： glass structure；ultra wide band；bismuth ions；near-infrared luminescence；silicate glass