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《应用地球物理(英文版)》 2009-01
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A new type of fiber Bragg grating based seismic geophone

Tao Guo1,Zhang Xianglin2,Liu Xinru3,Chen Shaohua1,and Liu Tongyu41.Fiber Optical Sensor Research Lab,State Key Laboratory of Petroleum Resource&Prospecting,China University of Petroleum,Beijing,102249,China. 2.Electromechanical R&T Center of COSL,Yanjiao 101149,China. 3.Bohai Drilling,Dagang logging Company,Tianjin 300280,China. 4.Shandong Micro-Sensor Photonics Ltd(SMSP Ltd),Jinan,Shandong 250014,China.  
Aimed at the poor performance of conventional geophones in exploration for deeper and complex targets,we present the principle and theoretical design of a new geophone based on the opticalfiber Bragg grating(FBG)sensing technology.The important parameters such as response functions are calculated theoretically.Because of the advantages of FBG sensing technology,the new FBG geophone has a high dynamic range of 94dB at (10-200 Hz).This new generation of geophones will have wide use in seismic prospecting due to its higher sensitivity,lighter weight,and lower cost.
【Fund】: sponsored by the National 863 Program(Grant No.2006AA06Z207&2006AA06Z213);; the National Natural Science Foundation of China(Grant No.50674098);; the National 973 Program(Grant No.2007CB209601)
【CateGory Index】: P631.4
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