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28 September 2015 All-fiber ultrasound sensor array implemented by swept frequency interferometry
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Proceedings Volume 9634, 24th International Conference on Optical Fibre Sensors; 963416 (2015) https://doi.org/10.1117/12.2194586
Event: International Conference on Optical Fibre Sensors (OFS24), 2015, Curitiba, Brazil
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).
© (2015) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Haniel Gabai, Idan Steinberg, Lihi Shiloh, and Avishay Eyal "All-fiber ultrasound sensor array implemented by swept frequency interferometry", Proc. SPIE 9634, 24th International Conference on Optical Fibre Sensors, 963416 (28 September 2015); https://doi.org/10.1117/12.2194586
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