Development of nano-strain-resolution fiber optic quasi-static strain sensors for geophysical applications

Zuyuan He; Qingwen Liu; Tomochika Tokunaga

doi:10.1117/12.974965

17 October 2012 Development of nano-strain-resolution fiber optic quasi-static strain sensors for geophysical applications

Zuyuan He, Qingwen Liu, Tomochika Tokunaga

Author Affiliations +

Proceedings Volume 8421, OFS2012 22nd International Conference on Optical Fiber Sensors; 84210T (2012) https://doi.org/10.1117/12.974965
Event: OFS2012 22nd International Conference on Optical Fiber Sensor, 2012, Beijing, China

Abstract

We report a series of nano-strain resolution fiber-optic static-strain sensors by use of fiber Bragg gratings and fiber Fabry-Perot interferometers, for the monitoring the crustal deformation in geophysics research field. These sensors have identical references for static strain measurement, and the resolution and dynamic range are guaranteed by the interrogation methods. With the fiber Bragg grating sensor, field demonstrations on the monitoring of crustal deformation induced by oceanic tide have been carried out with nano-strain resolution. Development of high performance fiber Fabry-Perot interferometer sensor is also introduced.

Citation Download Citation

Zuyuan He, Qingwen Liu, and Tomochika Tokunaga "Development of nano-strain-resolution fiber optic quasi-static strain sensors for geophysical applications", Proc. SPIE 8421, OFS2012 22nd International Conference on Optical Fiber Sensors, 84210T (17 October 2012); https://doi.org/10.1117/12.974965

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