光在双层双折射系统中的传播过程

目的 研究正入射条件下光在双层双折射系统中的传播规律 .方法 利用该双层系统 ,光束每经过一次交接面 ,反射光和透射光的数目将是入射光束数目的两倍 ,用矩阵方式给出了其精确的传输过程 .结果与结论 光在该系统中的多次反射与透射 ,光束的数目成几何级数增加 。

光纤光栅偏振模色散研究

对光纤光栅的偏振模色散特性进行了深入的研究,特别是啁啾光纤光栅色散补偿器的偏振模色散。研究表明啁啾光纤光栅色散补偿器的偏振模色散主要由光栅的双折射系数、色散量决定,提出了制作低偏振模色散的色散补偿器的方法。

Development of Fiber-Optic Current Sensing Technique and Its Applications in Electric Power Systems

This paperdescribes the development and applications of a fiber-optic electric current sensing technique with the stable properties and compact, simple, and flexible structure of the sensing device. The special characteristics of the sensors were achieved by use of the special low birefringence fiber as the Faraday-effect sensing element and were also achieved with creation of sensing schemes which matched with the features of the fiber. Making use of the excellent features of the sensing technique, various current monitoring devices and systems were developed and applied practically for the control and maintenance in the electric power facility. In this paper, the design and performance of the sensing devices are introduced first. After that, examples of the application systems practically applied are also introduced, including fault section/point location systems for power transmission cable lines.