The optical grating fiber sensing technology be used in geological hazards monitoring

摘要：

The wavelength demodulation for fiber Bragg grating uses the property that the fiber gratings average refractive index and grid cycle are sensitive to the environment parameters, and to convert environmental parameters change into a shift of the Bragg wavelength. The environment parameters can be measured through demodulating the shift of Bragg wavelength. This paper introduces the principle of FBG, and using the wavelength demodulation technology to design a wavelength demodulation instrument, and then discusses the mounting craft of the optical fiber sensor and how to eliminate temperature influence in the strain wavelength. Finally gives some application examples about geo-hazard monitoring. As a result, it is suited that the optical fiber sensing technology be used in the strain monitoring.

关键词： fiber Bragg grating (FBG) Geological Hazards Monitoring Wavelength Demodulation Mount Craft

作者: Xianwei Meng Qing Zhang Yanxin Shi Yongwen Han Xiaofei Zhang

作者单位: Centre for Hydrogeology and Environmental Geology, CGS, Baoding, Hebei 071051,China Centre for Hydrogeology and Environmental Geology, CGS, Baoding, Hebei 071051, China

会议类型: 国际会议

会议名称: The 4th International Conference on Environmental and Engineering Geophysics(第四届环境与工程地球物理国际会议 ICEEG2010)

会议地点: 成都

会议语种:英文

页码: 984-988

在线出版日期: 2010-06-14（万方平台首次上网日期，不代表论文的发表时间）