辐射作用下高Verdet常数氧化铅纳米掺杂石英光纤研究

项目名称： 辐射作用下高Verdet常数氧化铅纳米掺杂石英光纤研究

项目编号： No.61475096

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 无线电电子学、电信技术

项目作者： 王廷云

作者单位： 上海大学

项目金额： 86万元

中文摘要： 基于磁光效应的磁光光纤可用于制成磁光调制器、磁光开关、磁光电流传感器等器件和系统，尤其是电流传感更是当前国内外研究热点，在智能电网建设、大型输电、供电系统的安全运行与监控等方面具有重要的应用价值。而全光纤的光纤电流传感器到目前为止仍不能应用，其核心问题就是应用的磁光光纤的灵敏度低,抗外部环境干扰性差。因此，研究应用于通信与传感的高灵敏度、抗干扰的磁光光纤是亟需和必要的。 本项目从材料微观结构入手，研究辐射对石英基质光纤材料内掺杂纳米氧化铅磁光特性的影响和作用机理，阐述辐射与掺杂离子内部电子态密度分布关系，提高掺杂光纤材料的磁敏感特性；研究纳米掺杂、光纤拉丝与退火处理结合的新技术，分析纳米掺杂粒子尺寸大小、掺杂材料微结构变化、光纤应力分布与掺杂光纤的旋光特性、法拉第磁光效应、双折射特性，以及光纤性能参数的关系；同时，结合辐射技术，研制具有高Verdet常数的氧化铅纳米掺杂石英光纤。

中文关键词： 辐射；Verdet；常数；氧化铅；纳米掺杂；光纤传感

英文摘要： The magneto-optical optical fibers, based on the magneto-optical effect, are used to make magneto-optical switches, magneto-optical modulators, magneto-optical current sensors, and other devices and systems, etc. In particular the current sensing is a research topic at home and abroad, currently. It is of great application values in the smart grid construction, larger power transmission, power system safety operation and monitoring. So far, the all-optical fiber current sensor is not used, the key issue is that the sensitivity of magneto-optical optical fiber is low, and the resistance to external environmental interference is poor. Therefore, it is necessary and urgent to research magneto-optical silica fibers with high sensitivity and anti-interferences in the communication and sensors. This project researches the influenence of irradiation on the magneto-optical properties of lead oxide nanomaterials doped silica fiber from the microscopic structure level, and elaborates the relationship between the irradiation and density of state of the internal electron in the dopant ions, and to improve the susceptibility characteristics of the doped optical fiber materials; Researches a new technology combining nanomaterials-doping, drawing with annealing process, and analyzes the relationship between particle size of nano-matericals doped optical fibers, microstructure changes of doping material, stress distribution characteristics in fibers, and Faraday effect, Faraday magneto-optical effect, stress birefringence, and performance parameters of the optical fibers, and so on. Then combining irradiation method, fabricates a lead oxide nano-doped silica optical fiber with high-Verdet constant.

英文关键词： Irradiation;Verdet constant;Lead oxide;Nano-materials doped;Optical fiber sensors