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Broadband fiber optic ultrasound hydrophone probe
Conference proceeding

Broadband fiber optic ultrasound hydrophone probe

C Mu, S Umchid, L Bansal, P A Lewin, M El-Sherif and A.S Daryoush
Proceedings of the Lightwave Technologies in Instrumentation and Measurement Conference, 2004
2004
DOI: https://doi.org/10.1109/LTIMC.2004.1371014
Featured in Collection :   UN Sustainable Development Goals @ Drexel

Abstract

Acoustic measurements Acoustic sensors Fiber lasers Frequency measurement Optical fiber sensors Optical fibers Probes Sonar equipment Ultrasonic imaging Ultrasonic variables measurement
A broadband fiber-optic based hydrophone probe is reported for measurements of acoustic fields at the frequencies up to 100 MHz. The fiber probe with a tip diameter of about 8 microns provides a desirable measurement tool eliminating the need for spatial averaging corrections. Power budget calculation of the fiber sensor set-up indicated that high power (200 mW) laser source is essential to achieve adequate signal-to-noise ratio. The results of the preliminary measurements allowed the probe sensitivity to be determined. Improvements to the measurement arrangements are discussed to bring this sensitivity (about 1.7 mV/MPa) in line with that theoretically calculated (4.3 mV/MPa).

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Web of Science research areas
Instruments & Instrumentation
Optics
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