Dr. Gal Shabtay Profile

Dr. Gal Shabtay

at Corephotonics Ltd

SPIE Involvement:

Author

Publications (13)

Proceedings Article | 8 February 2005 Paper

Optical dispersion compensation in 300-pin MSA transponders

David Mendlovic, Gal Shabtay

Proceedings Volume 5626, (2005) https://doi.org/10.1117/12.577606

KEYWORDS: Transponders, Dispersion, Tolerancing, Optical fibers, Optical networks, Dense wavelength division multiplexing, Optical amplifiers, Modulators, Signal detection, Receivers

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Proceedings Article | 12 January 2004 Paper

Variable optical attenuation functionality for laser welding, laser range finder, and lidar applications

Zeev Zalevsky, Roy Appelman, Gal Shabtay, David Mendlovic, Jacob Vertman

Proceedings Volume 5240, (2004) https://doi.org/10.1117/12.510868

KEYWORDS: Laser welding, Camera shutters, LIDAR, Laser range finders, Receivers, Signal attenuation, Ultrafast phenomena, Free space optics, Beam controllers, Transmitters

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Proceedings Article | 3 September 2002 Paper

Evolution of ultrafast all-optical free-space switches

Zeev Zalevsky, Gal Shabtay, David Mendlovic, Amir Shemer, Vardit Eckhouse, Roy Appelman, Uriel Levy

Proceedings Volume 4907, (2002) https://doi.org/10.1117/12.482257

KEYWORDS: Switching, Switches, Polarization, Ultrafast phenomena, Prototyping, Optical switching, Optical networks, Dielectric polarization, Transmitters, Optical amplifiers

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Proceedings Article | 29 August 2002 Paper

Tunable spectral monitoring device

Zeev Zalevsky, Gal Shabtay, Emanuel Marom, David Mendlovic, Roy Appelman

Proceedings Volume 4909, (2002) https://doi.org/10.1117/12.481063

KEYWORDS: Resonators, Optical filters, Fabry–Perot interferometers, Liquid crystals, Image filtering, Imaging systems, Refractive index, Sensors, Dielectric polarization, Dielectric mirrors

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Proceedings Article | 6 July 2001 Paper

From computer-generated holograms toward partially coherent optical signal processors

David Mendlovic, Gal Shabtay, Zeev Zalevsky, Emanuel Marom, Uriel Levy, Naim Konforti, Javier Garcia, Efraim Goldenberg

Proceedings Volume 4392, (2001) https://doi.org/10.1117/12.432799

KEYWORDS: Signal processing, Optical signal processing, Spatial coherence, Coherence (optics), Computer generated holography, Data processing, Diffraction, Light sources, Optical spheres, Charge-coupled devices

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Optical signal processing has its roots in the experiments of Lord Rayleigh, Abbe and Porter that were the first that dealt with the spectrum of an image. This historical path of revolution has been followed years later by the extraordinary work of A. W. Lohmann in the optical data processing during the last 40 years. The new innovations and the future possibilities that are to be opened up in the new millennium show his dominant signature. Some recent projects that enlighten the future ofthe optical signal processing field are described in this presentation. The invention of the computer generated holograms (CGH) was a giant leap for the optical signal processing field. Filters and holograms that previously were generated by direct holographic recording means, have been all of a sudden replaced by synthetic functions designed and realized by digital computers. It was the first interface between digital computers and optical systems. Such an approach led to the design of opto-electronic systems that operate in perfect synergy where each element is utilized for what it does best. Along the years, the field of computer-generated holography has been expanded to what is known as: diffractive optical elements. Techniques like kinoforms, binary optics, on-axis CGH, etc. have been developed for addressing the growing application list ofsuch elements. CGHs highly affected the optical signal-processing field. For example, various new processing techniques were created and applied for invariant pattern recognition (Circular Harmonics (CH), Synthetic Discriminate Filters (SDF) etc). The next innovation wave reached the shores of the optical data processing community in the 80s when A. W. Lohmann presented the optical interconnections as the next challenge of optical data processing. Many configurations were discussed, investigated and applied for optical processing (perfect shuffle, omega net, cross over etc.). In the 90s A. W. Lohmann was a key player in a new revolution in optical processing where optics was used as a transformation tool. New transformations were invented and realized by optical means as for instance Fractional Fourier Transform, Wigner distribution, Fractional Hubert and Hartley Transforms etc. Those were applied for various signal-processing applications and used also in digital processing. In the new millenium optics adapts itself to the binary mode of operation that is common in computer systems. This trend becomes feasible also due to the impressive progress in the opto-electrical interface devices such as the spatial light modulators, light sources such as VCSELs and detectors such as photo-diodes. These new achievements permit also the operation of opto-electronic systems at extremely high rates. It is evident that in the next years of the millenium optical data processing field will continue to grow, develop and replace additional processing modules in the digital computation world. Without much doubt those will be accompanied and innovated by the scientific assistance foundation and guidance of A. W. Lohmann. In this paper we will focus on optical processing of partially coherent light. This field is mostly interesting and relevant since it includes both the aspects of data processing and the optical design skills that insure its promising industrial future.

Proceedings Article | 24 May 2000 Paper

Information processing with spatially coherent light

Adolf Lohmann, David Mendlovic, Gal Shabtay

Proceedings Volume 4089, (2000) https://doi.org/10.1117/12.386807

KEYWORDS: Data processing, Optical signal processing, Coherent optics, Coherence (optics), Spatial filters, Temporal coherence, Radar, Free space, Lenses, Signal to noise ratio

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Proceedings Article | 19 July 1999 Paper

Optimal 3D beam forming

Gal Shabtay, Uriel Levy, David Mendlovic, Zeev Zalevsky, Emanuel Marom

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.355023

KEYWORDS: Gaussian beams, Diffraction, Optical components, Fourier transforms, Beam propagation method, Free space, Calculus, Wave propagation, Wavefronts, Optical communications

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Proceedings Article | 19 July 1999 Paper

Novel approach for exceeding the resolving power of optical systems

Zeev Zalevsky, David Mendlovic, Adolf Lohmann, Gal Shabtay

Proceedings Volume 3749, (1999) https://doi.org/10.1117/12.354894

KEYWORDS: Spectral resolution, Super resolution, Charge-coupled devices, Fourier transforms, Optical transfer functions, CCD cameras, Data processing, Image transmission, Spatial resolution, Spatial frequencies

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Proceedings Article | 9 March 1999 Paper

Novel system for obtaining real-time 3D position superresolved estimation of point targets

David Mendlovic, Zeev Zalevsky, Uriel Levy, Gal Shabtay, Naim Konforti, Emanuel Marom

Proceedings Volume 3715, (1999) https://doi.org/10.1117/12.341302

KEYWORDS: 3D acquisition, Detector arrays, Quantization, Diffractive optical elements, Detection and tracking algorithms, Error analysis, Spatial resolution, Imaging systems, Optical components, Cameras

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Proceedings Article | 9 October 1998 Paper

Modified morphological correlation via binary representation

Emanuel Marom, David Mendlovic, Amir Shemer, Gal Shabtay

Proceedings Volume 3466, (1998) https://doi.org/10.1117/12.326771

KEYWORDS: Binary data, Optical correlators, Joint transforms, Multiplexing, Diffraction, Optoelectronics, Digital filtering, Error analysis, Image filtering, Raster graphics

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Proceedings Article | 2 July 1998 Paper

Novel approaches in morphological correlations

David Mendlovic, Amir Shemer, Zeev Zalevsky, Emanuel Marom, Gal Shabtay

Proceedings Volume 3405, (1998) https://doi.org/10.1117/12.312784

KEYWORDS: Binary data, Signal to noise ratio, Computer simulations, Pattern recognition, Optical correlators, Image filtering, Image compression, Image analysis, Joint transforms, Control systems

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Proceedings Article | 22 May 1998 Paper

Triple correlation: variations, applications, optoelectronic implementations, and properties

David Mendlovic, Adolf Lohmann, Gal Shabtay

Proceedings Volume 3490, (1998) https://doi.org/10.1117/12.308925

KEYWORDS: Optoelectronics, Free space, Fourier transforms, Optical spheres, Signal processing, Astronomy, Convolution, Diffraction, Wave propagation, Electronic filtering

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SPIE Journal Paper | 1 August 1997

Single-output color pattern recognition using a fractional correlator

Zeev Zalevsky, Ido Raveh, Gal Shabtay, David Mendlovic, Javier Garcia

OE, Vol. 36, Issue 08, (August 1997) https://doi.org/10.1117/12.10.1117/1.601428

KEYWORDS: Optical correlators, Pattern recognition, RGB color model, Transmittance, Fourier transforms, Optical filters, Optical pattern recognition, Computer simulations, Optical engineering, Computer generated holography

Showing 5 of 13 publications

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