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Proceedings 2017, 1(8), 808; doi:10.3390/proceedings1080808

Fringe Visibility Enhanced Fiber-Optic Fabry-Perot Interferometric Sensor for Highly Sensitive Ultrasound Detection

Department of Physics, Northwest University, Xi’an 710069, China
Presented at the 5th International Symposium on Sensor Science (I3S 2017), Barcelona, Spain, 27–29 September 2017.
Authors to whom correspondence should be addressed.
Published: 6 December 2017
(This article belongs to the Proceedings of the 5th International Symposium on Sensor Science (I3S 2017))
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A fringe visibility enhanced fiber-optic Fabry-Perot functionalized diaphragm based ultrasonic sensor is proposed and experimentally demonstrated for ultrasound sensing. The sensor consists of a fiber-optic collimator and a PTFE diaphragm to form a Fabry-Perot interferometer. Due to the significantly increase in the slope of the sensor spectral sideband and the smaller Young’s modulus of the PTFE, a high response to both continuous and pulsed ultrasound with a high SNR of 42.92 dB in 300 kHz is achieved when the spectral sideband filter technique is used to interrogate the sensor.
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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Qiao, X.; Zhang, W.; Wang, R.; Rong, Q.; Shao, Z.; Bao, W. Fringe Visibility Enhanced Fiber-Optic Fabry-Perot Interferometric Sensor for Highly Sensitive Ultrasound Detection. Proceedings 2017, 1, 808.

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