导波法测量光通信波段液晶的折射率  

Measurement of the Refractive Indices of Liquid Crystals in the Telecommunication Band by Guided Modes

作　　者：刘子熹[1] 杨昌喜[1] 杨傅子[2] 徐寿颐[2] 

机构地区：[1]清华大学精密仪器系,北京100084 [2]清华大学化学系,北京100084

出　　处：《光电子．激光》2004年第7期842-845,共4页Journal of Optoelectronics·Laser

基　　金：教育部跨世纪优秀人才培养计划资助项目

摘　　要：用导波法对光通信波段下液晶的折射率进行了测量,给出了5CB液晶从可见光波段到光通信波段的色散曲线及对应的Sellmeier公式的系数。详细介绍了实验原理、装置、结果及其分析。还初步探索了液晶在光通信波段的双折射特性与其分子结构之间的关系,为寻找高双折射液晶提供一些建议。Refractive indices of several kinds of liquid crystals in the telecommunication band were measured by guided modes. We present the dispersion curve and corresponding coefficients of Sellmeier equations for the typical liquid crystal (SCB) from visible range to infrared were presented. The principle, set-up and experimental data about such a measurement are given and discussed in detail. Experimental curve agrees well with the theoretical one which shows that the measurement is relatively accurate. Further, relation between the birefringence and molecular structure of liquid crystals in the telecommunication band was discussed.

关 键 词：导波法 光通信 液晶 折射率 

分 类 号：TN929.11[电子电信—通信与信息系统]