Seismic event monitoring using very long gauge length integrating fiber optic sensors

William B. Spillman Jr.; Dryver R. Huston; Junru Wu

doi:10.1117/12.417886

23 February 2001 Seismic event monitoring using very long gauge length integrating fiber optic sensors

William B. Spillman Jr., Dryver R. Huston, Junru Wu

Proceedings Volume 4357, Distributed Fiber Optical Sensors and Measuring Networks; (2001) https://doi.org/10.1117/12.417886
Event: Distributed Fiber Optical Sensors and Measuring Networks, 2000, none, Russian Federation

Abstract

Integrating fiber optic sensors offer the potential to monitor large spatial extents due to their geometry flexibility. To date, this potential has not been widely exploited. By increasing the length of an integrating fiber optic sensor, its gain and/or gauge length can be increased. In addition, by configuring the sensor to a spatial distribution of some parameter field of interest, the antenna gain of the sensor will provide selectivity for that particular distribution. In this paper we analyze the application of very long gauge length integrating fiber optic sensors to high sensitivity/highly directional seismic sensing. The ability to focus a seismic sensor on particular faults or locations such as underground nuclear test sites offers the potential of enhanced warning of impending earthquakes or detection of the occurrence of nuclear device testing. We provide an analysis of the application of very long gauge sensing to seismic detection and present some experimental results demonstrating antenna gain.

Citation Download Citation

William B. Spillman Jr., Dryver R. Huston, and Junru Wu "Seismic event monitoring using very long gauge length integrating fiber optic sensors", Proc. SPIE 4357, Distributed Fiber Optical Sensors and Measuring Networks, (23 February 2001); https://doi.org/10.1117/12.417886

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