高折射率芯Bragg光纤的气体传感特性  

Gas Sensing Property of High-Index-Core Bragg Fibers

作　　者：张治国[1] 刘小毅[1] 李安俭[1] 张方迪[1] 张民[1] 叶培大[1] 

机构地区：[1]北京邮电大学光通信与光波技术教育部重点实验室,北京100876

出　　处：《吉首大学学报（自然科学版）》2007年第3期59-63,共5页Journal of Jishou University(Natural Sciences Edition)

基　　金：国家自然科学基金资助项目(60372100;60507007)

摘　　要：应用全矢量有限元方法,分析了高折射率芯Bragg光纤的气体传感特性,通过计算Bragg光纤的结构参数、传输光波长与其传感灵敏度之间的关系,结果发现:同等条件下,传输波长越长,高折射率纤芯半径越小,高折射率介质折射率越低,高折射率芯Bragg光纤的传感灵敏度则越高.The gas sensing property of high-index-core Bragg fiber is investigated in this paper via a powerful full-vector finite element method. Based on the simulation and analysis, the relationship between the gas sensing property of highindex-core Bragg fiber and the fiber structure parameters, as well as the wavelength, has been gained, which shows the gas sensing property of the fibers increases with the decrease of the fiber＇s radius and refractive index, but it increases with the increase of the wavelength. These results will be helpful to the design of high performance one-dimensional microstructured gas or liquid sensing fibers.

关 键 词：导波与光纤光学 BRAGG光纤 矢量有限元 光纤传感 

分 类 号：TN913.7[电子电信—通信与信息系统]