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Sensors 2017, 17(2), 397; doi:10.3390/s17020397

UW Imaging of Seismic-Physical-Models in Air Using Fiber-Optic Fabry-Perot Interferometer

Physics Department, Northwest University, No.229, Taibai Road (North), Xi’an 710069, China
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Author to whom correspondence should be addressed.
Academic Editor: Vittorio M. N. Passaro
Received: 6 December 2016 / Revised: 10 February 2017 / Accepted: 15 February 2017 / Published: 17 February 2017
(This article belongs to the Section Physical Sensors)
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Abstract

A fiber-optic Fabry-Perot interferometer (FPI) has been proposed and demonstrated for the ultrasound wave (UW) imaging of seismic-physical models. The sensor probe comprises a single mode fiber (SMF) that is inserted into a ceramic tube terminated by an ultra-thin gold film. The probe performs with an excellent UW sensitivity thanks to the nanolayer gold film, and thus is capable of detecting a weak UW in air medium. Furthermore, the compact sensor is a symmetrical structure so that it presents a good directionality in the UW detection. The spectral band-side filter technique is used for UW interrogation. After scanning the models using the sensing probe in air, the two-dimensional (2D) images of four physical models are reconstructed. View Full-Text
Keywords: fiber sensor; Fabry-Perot interferometer; UW imaging; seismic-physical-model fiber sensor; Fabry-Perot interferometer; UW imaging; seismic-physical-model
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Rong, Q.; Hao, Y.; Zhou, R.; Yin, X.; Shao, Z.; Liang, L.; Qiao, X. UW Imaging of Seismic-Physical-Models in Air Using Fiber-Optic Fabry-Perot Interferometer. Sensors 2017, 17, 397.

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