2016 IEEE International Ultrasonics Symposium (IUS) 2016
DOI: 10.1109/ultsym.2016.7728572
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Calibration of reflectance-based fiber-optic hydrophones

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Cited by 14 publications
(16 citation statements)
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“…The experimental values for the three needle hydrophones do not include values below 1 MHz because of experimental signal-to-noise ratio limitations. Similar high-pass filter behavior for low frequencies ( f < f max ) has been measured for needle [5, 26, 27, 29, 40, 41, 60] and fiber optic [8, 14] hydrophones previously.…”
Section: Resultssupporting
confidence: 77%
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“…The experimental values for the three needle hydrophones do not include values below 1 MHz because of experimental signal-to-noise ratio limitations. Similar high-pass filter behavior for low frequencies ( f < f max ) has been measured for needle [5, 26, 27, 29, 40, 41, 60] and fiber optic [8, 14] hydrophones previously.…”
Section: Resultssupporting
confidence: 77%
“…The rigid cylindrical rod model presented here is accurate for predicting responses of the needle and fiber-optic hydrophones investigated for frequencies up to at least 1.5 f max . This high-pass filter behavior has been previously shown for needle [5, 26, 27, 29, 40, 41, 60] and fiber optic [8, 14] hydrophones. This work identifies conditions for which nonuniform sensitivity of needle and fiber optic hydrophones results in substantial distortions in acoustic pressure pulse measurements.…”
Section: Discussionsupporting
confidence: 75%
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“…Conversion of the hydrophone signals from voltages to acoustic pressures in water was performed using the manufacturer's calibration program mainly based on the Fresnel formula for the pressure‐dependent refractive index at the fiber tip/water interface Rfalse(T,pfalse)=)(ncnW(T,p)2)(nc+nW(T,p)2where n c represents the refractive index of the fiber core and n W represents the refractive index of the water that varies with both temperature T and pressure p .…”
Section: Methodsmentioning
confidence: 99%
“…[1][2][3] Recently, robust hydrophones based on PVDF and Fabry-Pérot ultrasound sensors have become available for the characterization of high amplitude fields generated by therapeutic ultrasound equipment. [4][5][6][7] For accurate measurements of the ultrasound fields, these devices need to be calibrated over a sufficiently wide frequency range to enable artefact-free conversion of their electrical signal to a pressure signal. [8][9][10][11] At present, the highest calibration frequency available on a routine basis is limited to 60 MHz.…”
Section: Introductionmentioning
confidence: 99%