Prof. Avishay Eyal Profile

Prof. Avishay Eyal

Full Professor at Tel Aviv Univ

SPIE Involvement:

Author

Publications (39)

Proceedings Article | 23 May 2023 Paper

Ultrasonic long range underwater acoustic sensing: going beyond the standard pulse repetition rate

Nadav Arbel, Moshe Tur, Avishay Eyal

Proceedings Volume 12643, 126431S (2023) https://doi.org/10.1117/12.2678079

KEYWORDS: Acoustics, Fiber Bragg gratings, Ultrasonics, Reflectors, Acoustic waves, Wave propagation, Sensors, Signal to noise ratio, Sensing systems, Autocorrelation

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Proceedings Article | 15 March 2023 Presentation + Paper

Towards imaging through side-scattering in a multi-mode optical fiber

Daniel Marima, Barak Hadad, Sahar Froim, Avishay Eyal, Alon Bahabad

Proceedings Volume 12438, 1243813 (2023) https://doi.org/10.1117/12.2647689

KEYWORDS: Spatial light modulators, Optical fibers, Rayleigh scattering, Multimode fibers, Endoscopes, Cameras, Speckle pattern, Signal to noise ratio, Endoscopy

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Proceedings Article | 28 August 2019 Paper

Utilizing the sparsity of quasi-distributed sensing systems for sub-Nyquist signal reconstruction

Lihi Shiloh, Raja Giryes, Avishay Eyal

Proceedings Volume 11199, 111992F (2019) https://doi.org/10.1117/12.2541252

KEYWORDS: Reflectors, Fiber Bragg gratings, Statistical analysis, Sensing systems, Compressed sensing, Sensors, Error analysis, Reflectometry, Backscatter

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Proceedings Article | 23 April 2017 Paper

Fast Sinusoidal Frequency Scan OFDR for Long Distance Distributed Acoustic Sensing

Lihi Shiloh, Avishay Eyal

Proceedings Volume 10323, 103230P (2017) https://doi.org/10.1117/12.2265403

KEYWORDS: Computer simulations, Backscatter, Data processing, Reflectors, Fiber lasers, Polarization, Acoustics, Spatial resolution, Detection and tracking algorithms, Sensors

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Proceedings Article | 23 April 2017 Paper

Distributed acoustic sensing: how to make the best out of the Rayleigh-backscattered energy?

A. Eyal, H. Gabai, I. Shpatz

Proceedings Volume 10323, 103230I (2017) https://doi.org/10.1117/12.2272458

KEYWORDS: Signal to noise ratio, Backscatter, Acoustics, Speckle, Sensing systems, Computer simulations, Reflectometry, Signal processing, Spatial resolution, Signal attenuation

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Proceedings Article | 23 April 2017 Paper

How to specify and measure sensitivity in Distributed Acoustic Sensing (DAS)?

Haniel Gabai, Avishay Eyal

Proceedings Volume 10323, 103238A (2017) https://doi.org/10.1117/12.2265527

KEYWORDS: Acoustics, Fiber optics sensors, Optical sensing, Optical fibers, Fiber optics, Signal to noise ratio, Backscatter, Solids, Reflectometry, Fiber optics tests

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Proceedings Article | 30 May 2016 Paper

SNR characterization in distributed acoustic sensing

Haniel Gabai, Avishay Eyal

Proceedings Volume 9916, 99162W (2016) https://doi.org/10.1117/12.2236640

KEYWORDS: Signal to noise ratio, Acoustics, Data acquisition, Multiplexing, Sensing systems, Optical sensing, Fiber optics sensors, Reflectometry, Light scattering, Phase shift keying, Sensors, Phase measurement, Backscatter, Hybrid optics

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Proceedings Article | 15 March 2016 Paper

All fiber sensor array for ultrasound sensing

Haniel Gabai, Idan Steinberg, Avishay Eyal

Proceedings Volume 9708, 97084F (2016) https://doi.org/10.1117/12.2209455

KEYWORDS: Ultrasonography, Sensors, Fiber optics sensors, Multiplexing, Optical fibers, Interferometry, Electromagnetic coupling, Biomedical ultrasonography, Electromagnetic interference, Opacity, Hybrid optics, Photoacoustic spectroscopy, Ultrasonics, Acoustics, Signal detection

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Proceedings Article | 28 September 2015 Paper

All-fiber ultrasound sensor array implemented by swept frequency interferometry

Haniel Gabai, Idan Steinberg, Lihi Shiloh, Avishay Eyal

Proceedings Volume 9634, 963416 (2015) https://doi.org/10.1117/12.2194586

KEYWORDS: Sensors, Ultrasonography, Multiplexing, Signal to noise ratio, Interferometry, Transducers, Acoustics, Fiber optics sensors, Photoacoustic spectroscopy, Signal detection

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Proceedings Article | 28 September 2015 Paper

Over 100km long ultra-sensitive dynamic sensing via Gated-OFDR

Idan Steinberg, Lihi Shiloh, Haniel Gabai, Avishay Eyal

Proceedings Volume 9634, 96341B (2015) https://doi.org/10.1117/12.2194873

KEYWORDS: Sensors, Spatial resolution, Reflectors, Reflectometry, Signal to noise ratio, Acoustics, Sensing systems, Phase modulation, Time-frequency analysis, Foam

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Proceedings Article | 1 July 2015 Paper

Utilization of negative beat-frequencies for maximizing the update-rate of OFDR

Haniel Gabai, Yakov Botsev, Meir Hahami, Avishay Eyal

Proceedings Volume 9655, 96553I (2015) https://doi.org/10.1117/12.2184154

KEYWORDS: Backscatter, Computer simulations, Spatial resolution, Reflectors, Receivers, Reflectometry, Hybrid optics, Sensing systems, Sensors, Fourier transforms

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Proceedings Article | 11 March 2015 Paper

Broadband ultrasonic sensor array via optical frequency domain reflectometry

Haniel Gabai, Idan Steinberg, Avishay Eyal

Proceedings Volume 9323, 93231L (2015) https://doi.org/10.1117/12.2080234

KEYWORDS: Sensors, Ultrasonography, Ultrasonics, Fiber optics sensors, Multiplexing, Mirrors, Reflectometry, Transducers, Acoustics, Optical arrays

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Proceedings Article | 11 March 2015 Paper

Investigation of a dual modal method for bone pathologies using quantitative ultrasound and photoacoustics

Idan Steinberg, Israel Gannot, Avishay Eyal

Proceedings Volume 9323, 93230R (2015) https://doi.org/10.1117/12.2079790

KEYWORDS: Bone, Ultrasonography, Photoacoustic spectroscopy, Ultrasonics, Pathology, Medicine, Absorption, Signal attenuation, Dual energy x-ray absorptiometry, Tissue optics

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Proceedings Article | 2 June 2014 Paper

Fractional Fourier transform reflectometry

Lihi Shiloh, Avishay Eyal

Proceedings Volume 9157, 91576T (2014) https://doi.org/10.1117/12.2059621

KEYWORDS: Reflectors, Fractional fourier transform, Receivers, Signal detection, Reflectometry, Time-frequency analysis, Fiber Bragg gratings, Modulation, Fourier transforms, Computer simulations

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Proceedings Article | 2 June 2014 Paper

Characterization of fast acoustic wave propagation using OFDR with double interrogation and frequency tracking

Haniel Gabai, Avishay Eyal

Proceedings Volume 9157, 91576R (2014) https://doi.org/10.1117/12.2059601

KEYWORDS: Acoustics, Wave propagation, Reflectors, Reflectometry, Detection and tracking algorithms, Receivers, Light emitting diodes, Signal to noise ratio, Frequency modulation, Solids

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Proceedings Article | 2 June 2014 Paper

Distributed audio recording using OFDR with double interrogation

Haniel Gabai, Avishay Eyal

Proceedings Volume 9157, 91576C (2014) https://doi.org/10.1117/12.2059388

KEYWORDS: Sensing systems, Reflectors, Fiber amplifiers, Optical amplifiers, Fiber optics sensors, Acoustics, Fiber optics, Reflectometry, Sensors, Fiber Bragg gratings

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Proceedings Article | 3 March 2014 Paper

Theoretical and experimental investigation of multispectral photoacoustic osteoporosis detection method

Idan Steinberg, Hadas Sara Hershkovich, Israel Gannot, Avishay Eyal

Proceedings Volume 8943, 89434N (2014) https://doi.org/10.1117/12.2039030

KEYWORDS: Bone, Acoustics, Phase measurement, Photoacoustic spectroscopy, Absorption, Ultrasonics, Ultrasonography, In vivo imaging, Transducers, Medicine

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Proceedings Article | 8 March 2013 Paper

Multispectral photoacoustic method for the early detection and diagnosis of osteoporosis

Idan Steinberg, Avishay Eyal, Israel Gannot

Proceedings Volume 8565, 85656G (2013) https://doi.org/10.1117/12.2005273

KEYWORDS: Bone, Photoacoustic spectroscopy, Ultrasonics, Phase measurement, Modulation, Tissue optics, Ultrasonography, Acoustics, Absorption, Signal attenuation

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Proceedings Article | 4 March 2013 Paper

Photoacoustic thermal diffusion flowmetry in tissue-mimicking phantoms

Adi Sheinfeld, Avishay Eyal

Proceedings Volume 8581, 85811O (2013) https://doi.org/10.1117/12.2000904

KEYWORDS: Modulation, Blood, Photoacoustic spectroscopy, Convection, Tissue optics, Diffusion, Temperature metrology, Tissues, Monte Carlo methods, Semiconductor lasers

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Proceedings Article | 4 March 2013 Paper

Doppler photoacoustic and Doppler ultrasound in blood with optical contrast agent

Adi Sheinfeld, Avishay Eyal

Proceedings Volume 8581, 85810S (2013) https://doi.org/10.1117/12.2000906

KEYWORDS: Doppler effect, Blood, Particles, Carbon, Transducers, Photoacoustic spectroscopy, Ultrasonography, Absorption, Modulation, Ultrasonics

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Proceedings Article | 7 November 2012 Paper

Dynamical strain sensing via discrete reflectors interrogated by optical frequency domain reflectometry

Oren Sagiv, Dror Arbel, Yinon Katz, Yossi Grotas, Avishay Eyal

Proceedings Volume 8421, 84218L (2012) https://doi.org/10.1117/12.975184

KEYWORDS: Fiber Bragg gratings, Reflectors, Reflectometry, Receivers, Sensors, Polarization, Connectors, Modulation, Phase shift keying, Spatial resolution

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Proceedings Article | 23 February 2012 Paper

Laser-diode based 10MHz photoacoustic Doppler flowmetry at 830 nm

Adi Sheinfeld, Avishay Eyal

Proceedings Volume 8223, 82233G (2012) https://doi.org/10.1117/12.908870

KEYWORDS: Particles, Doppler effect, Photoacoustic spectroscopy, Blood, Modulation, Ultrasonics, Signal detection, Carbon, Ultrasonography, Semiconductor lasers

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Proceedings Article | 23 February 2012 Paper

Flow-dependant photothermal modulation of the photoacoustic response

Adi Sheinfeld, Avishay Eyal

Proceedings Volume 8223, 82231D (2012) https://doi.org/10.1117/12.907261

KEYWORDS: Modulation, Photoacoustic spectroscopy, Blood, Semiconductor lasers, Ultrasonography, Doppler tomography, Blood vessels, Blood circulation, Convection, In vivo imaging

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Proceedings Article | 17 May 2011 Paper

Polarization pulling based on stimulated Brillouin scattering in a dual-pump configuration

Zohar Shmilovich, Avishay Eyal, Moshe Tur, Avi Zadok, Nikolay Primerov, Sanghoon Chin, Luc Thévenaz

Proceedings Volume 7753, 77532D (2011) https://doi.org/10.1117/12.885330

KEYWORDS: Polarization, Scattering, Jones vectors, Fiber optics, Nonlinear optics, Modulation, Wave propagation, Interferometry, Raman scattering, Fiber optics sensors

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Proceedings Article | 17 May 2011 Paper

Dynamical interrogation of interferometric sensor arrays by a simple polarimetric setup

Y. Katz, A. Eyal

Proceedings Volume 7753, 77531X (2011) https://doi.org/10.1117/12.886065

KEYWORDS: Sensors, Polarization, Fiber optics sensors, Interferometers, Polarimetry, Interfaces, Interferometry, Multiplexing, Fabry–Perot interferometry, Single mode fibers

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Proceedings Article | 19 February 2011 Paper

Coded photoacoustic Doppler excitation with near-optimal utilization of the time and frequency domains

Adi Sheinfeld, Sharon Gilead, Avishay Eyal

Proceedings Volume 7899, 789928 (2011) https://doi.org/10.1117/12.874563

KEYWORDS: Signal to noise ratio, Photoacoustic spectroscopy, Doppler effect, Modulation, Particles, Ultrasonography, Transducers, Technetium, Semiconductor lasers, Spatial resolution

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Proceedings Article | 17 February 2011 Paper

Polarization attributes of stimulated Brillouin scattering slow light in fiber

Avi Zadok, Avishay Eyal, Moshe Tur, Luc Thevenaz

Proceedings Volume 7949, 79490A (2011) https://doi.org/10.1117/12.880790

KEYWORDS: Polarization, Signal attenuation, Slow light, Birefringence, Scattering, Light scattering, Jones vectors, Optical spheres, Modulation, Wave propagation

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SPIE Journal Paper | 1 November 2010 Open Access

Simultaneous spatial and spectral mapping of flow using photoacoustic Doppler measurement

Adi Sheinfeld, Sharon Gilead, Avishay Eyal

JBO, Vol. 15, Issue 06, 066010, (November 2010) https://doi.org/10.1117/12.10.1117/1.3509113

KEYWORDS: Doppler effect, Modulation, Particles, Photoacoustic spectroscopy, Transducers, Spectral resolution, Ultrasonography, Signal to noise ratio, Doppler tomography, Data acquisition

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Proceedings Article | 24 February 2010 Paper

Time-resolved photoacoustic Doppler characterization of flow using pulsed excitation

Adi Sheinfeld, Sharon Gilead, Avishay Eyal

Proceedings Volume 7564, 75643N (2010) https://doi.org/10.1117/12.858340

KEYWORDS: Doppler effect, Transducers, Particles, Modulation, Photoacoustic spectroscopy, Doppler tomography, Data acquisition, Absorption, Velocity measurements, Ultrasonography

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Proceedings Article | 5 October 2009 Paper

A low-loss interferometric sensor array with unequal segments

A. Isseroff, M. Tur, A. Eyal

Proceedings Volume 7503, 75032M (2009) https://doi.org/10.1117/12.835380

KEYWORDS: Sensors, Optical fibers, Interferometry, Modulation, Fiber optics sensors, Phase shift keying, Birefringence, Signal detection, Multiplexing, Polarimetry

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Proceedings Article | 16 May 2008 Paper

Polarimetric implementation of a low loss interferometric sensor array

A. Eyal, A. Isseroff, A. Oni, E. Raanan, M. Tur

Proceedings Volume 7004, 70041R (2008) https://doi.org/10.1117/12.785849

KEYWORDS: Sensors, Polarization, Phase modulation, Polarimetry, Radon, Interferometry, Detector arrays, Optical fibers, Polarization maintaining fibers, Fiber optics sensors

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Proceedings Article | 9 June 2004 Paper

Analysis of fiber optic sensing in the presence of polarization-mode dispersion and polarization-dependent loss

Avishay Eyal, D. Kuperman, A. Zadok, Moshe Tur

Proceedings Volume 5502, (2004) https://doi.org/10.1117/12.566702

KEYWORDS: Fiber optics sensors, Polarization, Sensors, Modulation, Signal attenuation, Fiber optics, Spatial resolution, Matrices, Distortion, Chemical elements

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Proceedings Article | 1 September 1999 Paper

The role of the principal states of polarization in embedded fiber optic sensors

A. Eyal

Proceedings Volume 3746, 374610 (1999) https://doi.org/10.1117/12.2302026

KEYWORDS: Polarization, Sensors, Fiber optics sensors, Channel projecting optics, Birefringence, Optical fibers, Modulation, Receivers, Signal detection, Fiber optics

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Proceedings Article | 18 June 1998 Paper

Description of polarization dispersion effects in embedded fiber optic sensors using the principal states of polarization

Avishay Eyal, Michal Artzi, Ofer Shapiro, Moshe Tur

Proceedings Volume 3483, (1998) https://doi.org/10.1117/12.309690

KEYWORDS: Polarization, Fiber optics sensors, Sensors, Signal detection, Interferometers, Dispersion, Optical fibers, Birefringence, Fiber optics, Composites

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Proceedings Article | 16 April 1998 Paper

Polarization mode dispersion effects in embedded fiber optic strain sensors

Avishay Eyal, M. Ben-Artzi, Ofer Shapiro, Moshe Tur

Proceedings Volume 3321, (1998) https://doi.org/10.1117/12.305564

KEYWORDS: Polarization, Sensors, Fiber optics sensors, Fiber optics, Interferometers, Birefringence, Optical fibers, Composites, Phase shifts, Interferometry

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Proceedings Article | 22 September 1997 Paper

Strain sensing using embedded optical fibers and radio-frequency interferometry

M. Ben-Artzi, Avishay Eyal, Ofer Shapiro, Moshe Tur, Mati Zaidman, A. Green, Doron Shalev, S. Gali

Proceedings Volume 3110, (1997) https://doi.org/10.1117/12.281322

KEYWORDS: Optical fibers, Composites, Fiber optics sensors, Optical sensing, Optical testing, Interferometry, Geometrical optics, Polarization, Sensors, Radio propagation

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Proceedings Article | 22 September 1997 Paper

Wavelength dependence of the principal states of polarization in short segments of doped fiber

Avishay Eyal, Nir Friedman, Moshe Tur

Proceedings Volume 3110, (1997) https://doi.org/10.1117/12.281415

KEYWORDS: Polarization, Fiber lasers, Birefringence, Erbium, Tunable lasers, Polarizers, Optical spheres, Single mode fibers, Fiber optic communications, Laser development

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