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Research and application of fiber Bragg grating geophone

MA Chao,QIAO Xue-guang,JIA Zhen-an,YU Da-kuan,ZHANG Jing,WANG Yu(Shannxi Key Laboratory of Photoeletric Sensing Logging,Xi'an Shiyou University,Xi'an 710065,China)  
Fiber Bragg Grating seism demodulation technology is the newest kind of seism demodulation technology.The result of the experiment indicates that the Fiber Bragg Grating geophone has wider bandwidth,better stability,higher sensitivity,and a perfect kind.In this paper,the basic principle,theoretical calculation and operation of the FBG sensing are mainly described.The study and application of the FBG seismometer are provided.
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