温度不敏感光纤光栅压强传感器  

Fiber Bragg grating pressure sensor insensitive to temperature

作　　者：陈建军[1] 张伟刚[1] 涂勤昌[1] 邹玉姣[2] 

机构地区：[1]南开大学信息技术科学学院现代光学研究所光电信息技术科学教育部重点实验室,天津300071 [2]南开大学物理科学学院,天津300071

出　　处：《应用光学》2007年第1期77-81,共5页Journal of Applied Optics

基　　金：国家自然科学基金(60577018);国家自然科学基金(10674075);国家863计划课题(2002AA313110);南开大学科技创新基金;光电信息技术科学教育部重点实验室开放课题(2005-06);南开大学学生创新基金

摘　　要：提出了一种新颖的高灵敏度温度不敏感光纤光栅压强传感器。该传感器主要由开口环传感机构和铝箔管组成,根据光纤布拉格光栅带宽调谐原理,首次采用开口环机构和利用带宽编码技术,实现了温度不敏感压强感测。实验结果表明:该传感器在低压范围内具有很高的压强传感灵敏度系数,可达2.50×103nm/M Pa,实验结果与理论分析基本相符。通过选择不同材料的开口环和铝箔管的材料以及改变其结构参数,可灵活设计并调节压强传感灵敏度系数及压强感测范围。A novel high-sensitivity fiber Bragg grating （FBG） pressure sensor was designed, which was mainly composed of the setup of the opening loop and the aluminum-foil pipe. With the opening loop mechanism and the bandwidth code incorporated, the pressure sensor based on the bandwidth tuning principle of FBG is implemented for the temperature-independent pressure measurement. The experimental results indicate that the sensor is very sensitive to pressure, which is up to 2. 50×10^3 nm/MPa, and the experimental results agree with the theoretical analysis. The pressure sensitivity and measurement range can be designed and altered by changing the material and parameter of the opening loop and aluminum-foil pipe.

关 键 词：光纤光栅 压强传感器 温度不敏感 

分 类 号：TN25[电子电信—物理电子学]