Characterization of the spatio-temporal response of optical fiber sensors to incident spherical waves

Istvan A. Veres; Peter Burgholzer; Thomas Berer; Amir Rosenthal; Georg Wissmeyer; Vasilis Ntziachristos

doi:10.1016/j.phpro.2015.08.078

Characterization of the spatio-temporal response of optical fiber sensors to incident spherical waves

Istvan A. Veres, Peter Burgholzer, Thomas Berer, Amir Rosenthal, Georg Wissmeyer, Vasilis Ntziachristos

Chair of Biological Imaging

Research output: Contribution to journal › Conference article › peer-review

3 Scopus citations

Abstract

A theoretical framework is presented for calculating the opto-acoustic response of optical fiber ultrasound sensors with several layers of coating. A harmonic point source generating a spherical wavefront with arbitrary position and frequency is assumed. The fiber is acoustically modeled by a layered cylinder on which spherical waves are scattered. The principle strains on the fiber axis are calculated from the scattering of the acoustic waves and used in a strain-optic model to calculate the phase shift of the guided modes. The theoretical results are compared to experimental data obtained with a sensing element based on a π-phase-shifted fiber Bragg grating and with photoacoustically generated ultrasonic signals.

Original language	English
Pages (from-to)	155-158
Number of pages	4
Journal	Physics Procedia
Volume	70
DOIs	https://doi.org/10.1016/j.phpro.2015.08.078
State	Published - 2015
Event	ICU International Congress on Ultrasonics, ICU 2015 - Metz, France Duration: 11 May 2015 → 14 May 2015

Keywords

Optical fiber
scattering
spherical wave

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10.1016/j.phpro.2015.08.078

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title = "Characterization of the spatio-temporal response of optical fiber sensors to incident spherical waves",

abstract = "A theoretical framework is presented for calculating the opto-acoustic response of optical fiber ultrasound sensors with several layers of coating. A harmonic point source generating a spherical wavefront with arbitrary position and frequency is assumed. The fiber is acoustically modeled by a layered cylinder on which spherical waves are scattered. The principle strains on the fiber axis are calculated from the scattering of the acoustic waves and used in a strain-optic model to calculate the phase shift of the guided modes. The theoretical results are compared to experimental data obtained with a sensing element based on a π-phase-shifted fiber Bragg grating and with photoacoustically generated ultrasonic signals.",

keywords = "Optical fiber, scattering, spherical wave",

author = "Veres, {Istvan A.} and Peter Burgholzer and Thomas Berer and Amir Rosenthal and Georg Wissmeyer and Vasilis Ntziachristos",

note = "Publisher Copyright: {\textcopyright} 2015 The Authors.; ICU International Congress on Ultrasonics, ICU 2015 ; Conference date: 11-05-2015 Through 14-05-2015",

year = "2015",

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language = "English",

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T1 - Characterization of the spatio-temporal response of optical fiber sensors to incident spherical waves

AU - Veres, Istvan A.

AU - Burgholzer, Peter

AU - Berer, Thomas

AU - Rosenthal, Amir

AU - Wissmeyer, Georg

AU - Ntziachristos, Vasilis

PY - 2015

Y1 - 2015

N2 - A theoretical framework is presented for calculating the opto-acoustic response of optical fiber ultrasound sensors with several layers of coating. A harmonic point source generating a spherical wavefront with arbitrary position and frequency is assumed. The fiber is acoustically modeled by a layered cylinder on which spherical waves are scattered. The principle strains on the fiber axis are calculated from the scattering of the acoustic waves and used in a strain-optic model to calculate the phase shift of the guided modes. The theoretical results are compared to experimental data obtained with a sensing element based on a π-phase-shifted fiber Bragg grating and with photoacoustically generated ultrasonic signals.

AB - A theoretical framework is presented for calculating the opto-acoustic response of optical fiber ultrasound sensors with several layers of coating. A harmonic point source generating a spherical wavefront with arbitrary position and frequency is assumed. The fiber is acoustically modeled by a layered cylinder on which spherical waves are scattered. The principle strains on the fiber axis are calculated from the scattering of the acoustic waves and used in a strain-optic model to calculate the phase shift of the guided modes. The theoretical results are compared to experimental data obtained with a sensing element based on a π-phase-shifted fiber Bragg grating and with photoacoustically generated ultrasonic signals.

KW - Optical fiber

KW - scattering

KW - spherical wave

UR - http://www.scopus.com/inward/record.url?scp=84948661682&partnerID=8YFLogxK

U2 - 10.1016/j.phpro.2015.08.078

DO - 10.1016/j.phpro.2015.08.078

M3 - Conference article

AN - SCOPUS:84948661682

SN - 1875-3884

VL - 70

SP - 155

EP - 158

JO - Physics Procedia

JF - Physics Procedia

T2 - ICU International Congress on Ultrasonics, ICU 2015

Y2 - 11 May 2015 through 14 May 2015

ER -

Characterization of the spatio-temporal response of optical fiber sensors to incident spherical waves

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Keywords

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