监测点波长对高双折射光纤环镜轴向应变灵敏度的影响  

Influence of monitoring point wavelength on axial strain sensitivity of high-birefringence fiber loop mirror

作　　者：江莺[1,2] 梁大开[1] 曾捷[1] 倪晓宇[2] 

机构地区：[1]南京航空航天大学,机械结构力学及控制国家重点实验室,南京210016 [2]南京林业大学机械电子工程学院,南京210037

出　　处：《物理学报》2013年第6期269-273,共5页Acta Physica Sinica

基　　金：国家自然科学基金(批准号:60907038;51275239);国家自然科学基金国际交流项目(批准号:51161120326);江苏省科技支撑计划项目(批准号:BE20111814);航空科学基金项目(批准号:20125652055);高等学校博士学科点专项科研基金(批准号:20123218110003);国家自然科学基金青年科学基金(批准号:51005124)资助的课题~~

摘　　要：研究了高双折射光纤环镜监测点波长对轴向应变灵敏度的影响.经理论推导得出高双折射光纤环镜轴向应变灵敏度公式.结果表明:当高双折射光纤材料选定后,灵敏度随着监测点波长的增大而增大;当监测点选定后,监测点的灵敏度为常数,波长变化与应变成线性关系.实验选取不同波长的波峰进行应变灵敏度监测,对各监测点进行数据拟合,实验结果与理论分析一致.研究结果对提高高双折射光纤环镜应变、温度等灵敏度具有指导意义.The influence of the monitoring point wavelength on the axial strain sensitivity of high-birefringence fiber loop mirror is investigated. The theoretical expression for the axial strain sensitivity of high-birefringence fiber loop mirror is developed. The results show that the sensitivity increases with the wavelength of the monitoring point increasing when the high-birefringence fiber material is certain, that the sensitivity is constant and the wavelength shift is linear versus strain for the certain monitoring point. The axial strain sensitivities of the different wave peaks are monitored in experiment. The experimental results of data fitting are in good agreement with the theoretical ones. The research results help to improve the strain sensitivity, the temperature sensitivity, etc. of high-birefringence fiber loop mirror.

关 键 词：波长 灵敏度 监测点 高双折射光纤环镜 

分 类 号：TN929.11[电子电信—通信与信息系统]