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Start Over Author "Song, Guangdong" Topic fiber bragg grating
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2. Design and application of fiber Bragg grating (FBG) geophone for higher sensitivity and wider frequency range.

Author

Wang, Jinyu, Hu, Binxin, Li, Wei, Song, Guangdong, Jiang, Long, and Liu, Tongyu

Subjects
*FIBER Bragg gratings, *GEOPHONE, *SENSITIVITY analysis, *CANTILEVERS, *ACCELERATION (Mechanics)
Abstract

The fiber Bragg grating geophone sensor with higher sensitivity and wider frequency range was reported. The methods to increase the sensitivity of the FBG cantilever sensor were presented. The acceleration sensitivity of the optimized FBG geophone is 220 pm/g, and the resonant frequency can reach to 295 Hz. The experiments show that the FBG geophone system has the minimum detectable acceleration of 1 mm/s 2 . Some factual application examples of using this fiber Bragg grating geophone monitoring system for micro seismic monitoring in coal mine were presented. [ABSTRACT FROM AUTHOR]

Published
2016
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