摘要
本文介绍了天津大学在光纤传感技术研究领域的最新进展。主要为:基于白光干涉实现了非本征光纤法珀和FBG并行解调,法珀腔长测量误差0.81μm,FBG波长测量误差14pm;基于光纤有源内腔结构实现了乙炔气体传感,灵敏度优于100ppm;基于保偏光纤实现了分布式传感,灵敏度可达6cm;基于边缘滤波器开发了光纤光栅解调仪,波长分辨力可达1.2pm,扫描速率超过200kHz;采用全光纤OCT技术实现了牙齿模型的二维、三维扫描;实现了光纤陀螺光纤环的温度、振动等动态特性检测。
The recent progress of fiber sensing techniques in Tianjin University is introduced in this paper. Parallel demodulation for Extrinsic Fabry-Perot Interferometer （EFPI） and Fiber Bragg Grating （FBG） sensors is realized based on white light interference, with EFPI measurement precision of 0.81 μm and FBG wavelength measurement precision of 14 pm. Concentration detection of acetylene is realized by using intra-cavity fiber laser with sensitivity less than 100 ppm. Distributed sensing based on polarization maintaining fiber is realized with resolution of 6 cm. FBG demodulation equipment is developed by using edge filter, with wavelength resolution of 1.2 pm and scan rate more than 200 kHz. Two-dimension and three-dimension scanning of tooth model is realized by using all-fiber optical coherence tomography （OCT）. And the dynamic characteristics like temperature and oscillation detection of fiber ring are realized for fiber optic gyroscope.
出处
《光电工程》
CAS
CSCD
北大核心
2010年第3期1-6,38,共7页
Opto-Electronic Engineering
基金
国家重点基础研究发展计划(973计划)(2010CB327800)
中国博士后科学基金资助项目(20090460690)
国家自然科学基金(60627002
60577013
30770597)
天津市应用基础重点项目(06YFJZJC00400)
教育部博士点新教师基金(200800561020
200800561022)
天津大学青年教师培养基金(TJU-YFF-08B47)
关键词
光纤传感
光纤法珀
保偏光纤
边缘滤波
光纤陀螺
fiber sensing
fiber Fabry-Perot
polarization-maintaining fiber
edge filter
fiber optic gyroscope
