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Proceedings Paper

All-fiber ultrasound sensor array implemented by swept frequency interferometry
Author(s): Haniel Gabai; Idan Steinberg; Lihi Shiloh; Avishay Eyal
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Paper Abstract

Fiber ultrasound (US) sensing is gaining popularity in recent years. Unique characteristics such as immunity to electromagnetic interference and embedding compatibility makes them advantageous in many applications. Multiplexing of US fiber sensors, however, remains a challenge. Here, a new multiplexing approach is introduced. Based on Swept Frequency Interferometry (SFI), it enables practical multiplexing of tens of US sensors. For demonstration, a 3-sensors setup was excited by ultrasound tone-bursts. While using low driving voltage (2.5-10V vs. ~100-400V in similar studies) and not implementing acoustic-impedance optimization or optical-resonance sensitivity enhancement, the sensors detected the excitation with high SNR (~25dB).

Paper Details

Date Published: 28 September 2015
PDF: 4 pages
Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963416 (28 September 2015); doi: 10.1117/12.2194586
Show Author Affiliations
Haniel Gabai, Tel Aviv Univ. (Israel)
Idan Steinberg, Tel Aviv Univ. (Israel)
Lihi Shiloh, Tel Aviv Univ. (Israel)
Avishay Eyal, Tel Aviv Univ. (Israel)

Published in SPIE Proceedings Vol. 9634:
24th International Conference on Optical Fibre Sensors
Hypolito José Kalinowski; José Luís Fabris; Wojtek J. Bock, Editor(s)

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