Abstract 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 optical fiber 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.
This work is sponsored by the National 863 Program (Grant No. 2006AA06Z207 & 2006AA06Z213), the National Natural Science Foundation of China (Grant No. 50674098), and the National 973 Program (Grant No. 2007CB209601).
Cite this article:
TAO Guo,ZHANG Xiang-Lin,LIU Xin-Ru et al. A new type of fiber Bragg grating based seismic geophone[J]. APPLIED GEOPHYSICS, 2009, 6(1): 84-92.
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