基于弹性薄片封装的高灵敏度光纤光栅压力传感器  

A novel fiber grating pressure sensor with high sensitivity based on elastic sheet packaging

作　　者：殷小峰[1] 姜暖[1] 杨华勇[1] 李智忠[2] 

机构地区：[1]国防科学技术大学光电科学与工程学院,湖南长沙410073 [2]海军潜艇学院,山东青岛266071

出　　处：《光电子．激光》2011年第5期681-684,共4页Journal of Optoelectronics·Laser

基　　金：国家自然科学基金资助项目(60901054)

摘　　要：为满足水深高精度测量,基于弹性薄片封装,研制了一种新型光纤Bragg光栅(FBG)压力增敏传感器,分析了其工作机理,并进行了水压测试。结果表明,封装后的FBG静水压灵敏度为33.6 nm/MPa,是封装前压力灵敏度的10 700倍,其液位测量的灵敏度为3.36 pm/cm。研究表明:对探头的材料和尺寸进行适当的调整,可实现不同精度和量程的压力测量。A novel fiber grating pressure sensor with high sensitivity is reported,the elastic sheet packaging technique is presented,the principles are analyzed theoretically and the packaging detector is made.The measurement results show that the pressure sensitivity of fiber grating with packaging is 33.6 nm/MPa,which is 10 700 times of that without packaging,and the measured sensitivity of liquid level measrement is 3.36 pm/cm.The results show that the proposed sensor can satisfy pressure measurement requirement with different accuracies and range by the proper adjustment of detector size and material.

关 键 词：光纤光学 光纤Bragg光栅(FBG) 压力传感 增敏封装 液位测量 

分 类 号：TN253[电子电信—物理电子学]