微弯压力光子晶体光纤传感器的设计  

Design of microbend pressure photonic crystal fiber sensors

作　　者：余先伦[1] 宋明成[1] 

机构地区：[1]重庆三峡学院物理与电子工程学院光电信息技术实验室,重庆404000

出　　处：《光通信研究》2007年第4期52-54,共3页Study on Optical Communications

基　　金：重庆市教委资助项目(KJ071116);重庆三峡学院资助课题

摘　　要：光子晶体光纤(PCF)具有压力敏感特性。文章根据弹光理论推导了PCF应变与应力的关系,得到压力作用下PCF折射率分布波动的定量关系,提出一种微弯压力PCF传感器的设计方案,并从理论上分析了压力存在条件下光脉冲在PCF中传播时的相位波动及这种传感器的检测原理。The Photonic Crystal Fiber（PCF） is pressure-sensitive. In this paper, the relationship between the strain and stress in PCF is deduced by elasto-optical theory and the quantitative fluctuations of its refractive index distribution under pressure obtained. The schematic design of a microbend pressure PCF sensor is presented and the phase fluctuation of the optical pulses transported in PCF under pressure and the detecting principle for such a sensor are theoretically analyzed.

关 键 词：光纤传感 光子晶体光纤 传感器 折射率分布 相位波动 

分 类 号：TN929.11[电子电信—通信与信息系统]