Prof. Erich Leitgeb Profile

Prof. Erich Leitgeb

Professor at Technische Univ Graz

SPIE Involvement:

Author

Publications (20)

Proceedings Article | 17 May 2022 Presentation + Paper

A combined optical-electronic simulation approach for a comprehensive discussion of the performance of visible light positioning under tunable lighting conditions

Saman Zahiri-Rad, Felix Lichtenegger, Claude Leiner, Andreas Peter Weiss, Christian Sommer, Erich Leitgeb

Proceedings Volume 12139, 1213902 (2022) https://doi.org/10.1117/12.2622092

KEYWORDS: Light emitting diodes, Receivers, Light sources and illumination, Optical simulations, Photodiodes, Electronic circuits, Light sources, Geometrical optics, Computer simulations

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Proceedings Article | 1 August 2021 Presentation + Paper

Hardware emulation of satellite-to-ground APD-based FSO downlink affected by atmospheric turbulence-induced fading

Hristo Ivanov, Ziad Hatab, Frank Marzano, Erich Leitgeb

Proceedings Volume 11834, 1183409 (2021) https://doi.org/10.1117/12.2593089

KEYWORDS: Free space optics, Signal attenuation, Satellites, Turbulence, Atmospheric turbulence, Scintillation, Telecommunications, Photodetectors, Atmospheric optics, Satellite communications

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By enabling Free Space Optics (FSO) technology as complementary solution to RF systems, the next generation satellite communication that relies on optical links is on the verge. Even though the transition to wireless optical communication is a fact, the space domain is very conservative to such critical changes that call for close evaluation of each system aspect. Since trade-off between costs and efficiency is required, a state-of-the-art laboratory testbed for verification of satellite-to-ground APD-based (Avalanche Photodiode) FSO links subject to atmospheric turbulence-induced fading is proposed in the current paper. In particular, the self-developed hardware channel emulator represents an FSO channel by means of fiber-coupled Variable Optical Attenuator (VOA) controlled by driver board and software. Having addressed real atmospheric Radiosonde Observation (RAOB) databases for Vienna, Austria, highly precise optical attenuation data due to atmospheric turbulence fading are generated and applied into the considered software. The used approach relies on complex analysis simulating atmospheric vertical profile of refractive index structure parameter as well as Gamma- Gamma and Log-Normal scintillation models considering both parameters the telescope aperture and the elevation angle. Along with the FSO channel emulator, the receiver under-test is high-speed 10 Gbps APD photodetector with integrated Transimpedance Amplifier (TIA) that is typically installed in future OGSs (Optical Ground Stations) for LEO/GEO satellite communication. Having considered On-Off Keying (OOK) Intensity Modulation/Direct Detection architecture, the emulated optical downlink is evaluated based on two different data throughputs while atmospheric turbulence induced-scintillations are also taken into account. The overall testbed performance is addressed by a BER tester and a digital oscilloscope, providing high-quality BER graphs and eye diagrams that prove the applied approach for testing APD-TIA in the presence of scintillations. Furthermore, the accuracy of the hardware channel emulator is evaluated by means of calibration measurements as well as beam camera providing measured proof of the propagated high-quality laser beam.

Proceedings Article | 10 October 2018 Presentation + Paper

Estimation of Mie scattering influence for the FSO channel under artificially simulated fog conditions

Hristo Ivanov, Thomas Plank, Luka Mustafa, Eva Cerncic, Erich Leitgeb

Proceedings Volume 10787, 107870R (2018) https://doi.org/10.1117/12.2325482

KEYWORDS: Mie scattering, Signal attenuation, Particles, Free space optics, Water, Scattering, Atmospheric particles, Refractive index

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Proceedings Article | 21 May 2018 Presentation + Paper

Design of an evaluation breadboard with SNSPD for testing various deep space optical communication applications

Hristo Ivanov, Sander Dorenbos, Erich Leitgeb, Gert Freiberger, Pasha Bekhrad

Proceedings Volume 10674, 1067415 (2018) https://doi.org/10.1117/12.2307388

KEYWORDS: Free space optics, Signal attenuation, Turbulence, Single photon, Single photon detectors, Clouds

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Proceedings Article | 17 May 2018 Paper

Benefits of visible light communication in car-to-car communication

P. Bekhrad, E. Leitgeb, H. Ivanov

Proceedings Volume 10683, 106833A (2018) https://doi.org/10.1117/12.2307524

KEYWORDS: Modulation, Telecommunications, Receivers, Visible radiation, Light emitting diodes, RF communications, Transmitters, Standards development, RGB color model, Signal to noise ratio

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Proceedings Article | 25 September 2013 Paper

Measurement system for analyzing the spectral radiation pattern of light sources for FSO systems

Pirmin Pezzei, Nacira Stiebler, Thomas Plank, Juraj Poliak, Erich Leitgeb, Markus Löschnigg

Proceedings Volume 8874, 887406 (2013) https://doi.org/10.1117/12.2026941

KEYWORDS: Free space optics, Collimators, Collimation, Receivers, Optical fibers, Light sources, Spectrum analysis, Transmitters, Optical testing, Light emitting diodes

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SPIE Journal Paper | 9 April 2012

Further results on fog modeling for terrestrial free-space optical links

Muhammad Khan, Erich Leitgeb, Sajid Muhammad, Muhammad Awan, Vaclav Kvicera, Martin Grabner

OE, Vol. 51, Issue 03, 031207, (April 2012) https://doi.org/10.1117/12.10.1117/1.OE.51.3.031207

KEYWORDS: Fiber optic gyroscopes, Signal attenuation, Data modeling, Free space optics, Visibility through fog, Visibility, Received signal strength, Optical engineering, Statistical analysis, Clouds

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Proceedings Article | 18 May 2009 Paper

Graz kHz SLR LIDAR: first results

Georg Kirchner, Franz Koidl, Daniel Kucharski, Walther Pachler, Matthias Seiss, Erich Leitgeb

Proceedings Volume 7355, 73550U (2009) https://doi.org/10.1117/12.822248

KEYWORDS: LIDAR, Clouds, Telescopes, Photons, Distance measurement, Field programmable gate arrays, Single photon, Satellites, Reflector telescopes, Pulsed laser operation

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Proceedings Article | 18 May 2009 Paper

Observing variable stars and transiting exo-planets with single photon counting

Georg Kirchner, Franz Koidl, Anton Dusleag, Farhat Iqbal, Erich Leitgeb

Proceedings Volume 7355, 73550T (2009) https://doi.org/10.1117/12.822245

KEYWORDS: Stars, Exoplanets, Single photon, Charge-coupled devices, Satellite laser ranging, Telescopes, Photon counting, Time correlated photon counting, Mirrors, Calibration

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SPIE Journal Paper | 1 March 2008

Measured and predicted light attenuation in dense coastal upslope fog at 650, 850, and 950 nm for free-space optics applications

Maher Al Naboulsi, Frederique De Fornel, Hervé Sizun, Michael Gebhart, Erich Leitgeb, S. Sheikh Muhammad, Benno Flecker, Christoph Chlestil

OE, Vol. 47, Issue 03, 036001, (March 2008) https://doi.org/10.1117/12.10.1117/1.2899023

KEYWORDS: Fiber optic gyroscopes, Signal attenuation, Meteorology, Atmospheric modeling, Free space optics, Atmospheric particles, Data modeling, Optical testing, Receivers, Atmospheric propagation

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SPIE Journal Paper | 1 June 2007

Characterization of fog attenuation in terrestrial free space optical links

Sajid Sheikh Muhammad, Benno Flecker, Erich Leitgeb, Michael Gebhart

OE, Vol. 46, Issue 06, 066001, (June 2007) https://doi.org/10.1117/12.10.1117/1.2749502

KEYWORDS: Fiber optic gyroscopes, Signal attenuation, Free space optics, Visibility through fog, Visibility, Particles, Data modeling, Modulation, Light scattering, Aerosols

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Proceedings Article | 1 September 2006 Paper

Results of attenuation measurements for optical wireless channels under dense fog conditions regarding different wavelengths

B. Flecker, M. Gebhart, E. Leitgeb, S. Sheikh Muhammad, C. Chlestil

Proceedings Volume 6303, 63030P (2006) https://doi.org/10.1117/12.680456

KEYWORDS: Signal attenuation, Fiber optic gyroscopes, Free space optics, Receivers, Transmitters, Geometrical optics, Atmospheric optics, Visibility through fog, Visibility, Clouds

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Proceedings Article | 18 August 2005 Paper

Measurement of light attenuation in dense fog conditions for FSO applications

M. Gebhart, E. Leitgeb, S. Sheikh Muhammad, B. Flecker, C. Chlestil, M. Al Naboulsi, F. de Fornel, H. Sizun

Proceedings Volume 5891, 58910K (2005) https://doi.org/10.1117/12.614830

KEYWORDS: Signal attenuation, Fiber optic gyroscopes, Visibility through fog, Visibility, Free space optics, Receivers, Data modeling, Optical testing, Particles, Atmospheric particles

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Proceedings Article | 8 December 2004 Paper

Hybrid wireless networks for civil-military-cooperation (CIMIC) and disaster management

Erich Leitgeb, Michael Gebhart, Andreas Truppe, Ulla Birnbacher, Peter Schrotter, Andreas Merdonig

Proceedings Volume 5614, (2004) https://doi.org/10.1117/12.571852

KEYWORDS: Free space optics, Satellites, Satellite communications, Antennas, Telecommunications, Video, Local area networks, Networks, Broadband telecommunications, Microwave radiation

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Proceedings Article | 10 September 2004 Paper

High availability of hybrid wireless networks

Erich Leitgeb, Michael Gebhart, Ulla Birnbacher, Wolfgang Kogler, Peter Schrotter

Proceedings Volume 5465, (2004) https://doi.org/10.1117/12.545456

KEYWORDS: Free space optics, Microwave radiation, Fiber optic gyroscopes, Telecommunications, Signal attenuation, Climatology, Data communications, Free space, Free space optical communications, Wireless communications

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Proceedings Article | 16 June 2004 Paper

Ethernet access network based on free-space optic deployment technology

Michael Gebhart, Erich Leitgeb, Ulla Birnbacher, Peter Schrotter

Proceedings Volume 5338, (2004) https://doi.org/10.1117/12.528590

KEYWORDS: Free space optics, Data storage, Video, Signal attenuation, Visibility, Internet, Visibility through fog, Atmospheric optics, Fiber optic gyroscopes, Receivers

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Proceedings Article | 12 September 2003 Paper

Improvement of the performance of high-capacity WDM-transmission systems due to nonlinear optical effects

Josef Bregenzer, Erich Leitgeb, Peter Fasser, Werner Heckel, Hans-Juergen Schmidtke

Proceedings Volume 4972, (2003) https://doi.org/10.1117/12.482626

KEYWORDS: Modulation, Complex systems, Electronic filtering, Scanning probe microscopy, Dispersion, Nonlinear filtering, Linear filtering, Optical filters, Optical networks, Single mode fibers

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Proceedings Article | 3 July 2003 Paper

Free-space optics: broadband wireless supplement to fiber networks

Erich Leitgeb, Josef Bregenzer, M. Gebhart, Peter Fasser, A. Merdonig

Proceedings Volume 4975, (2003) https://doi.org/10.1117/12.483832

KEYWORDS: Free space optics, Buildings, Free space, Light emitting diodes, Reliability, Radio optics, Wave propagation, Transmitters, Broadband telecommunications, Network architectures

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Proceedings Article | 30 April 2003 Paper

Novel characterization and reliability method for erbium-doped fiber amplifiers based on the use of photonics transmission simulation

Werner Heckel, Hans-Juergen Schmidtke, Bjoern Heppner, Ulrich Peller, Erich Leitgeb, J. Horwath

Proceedings Volume 4940, (2003) https://doi.org/10.1117/12.468271

KEYWORDS: Optical amplifiers, Fiber amplifiers, Dense wavelength division multiplexing, Optical simulations, Data modeling, Reliability, Photonics, Systems modeling, Signal to noise ratio, Interference (communication)

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Proceedings Article | 30 April 2003 Paper

Impact of atmospheric effects in free-space optics transmission systems

Erich Leitgeb, M. Gebhart, Peter Fasser, Josef Bregenzer, J. Tanczos

Proceedings Volume 4976, (2003) https://doi.org/10.1117/12.483802

KEYWORDS: Free space optics, Atmospheric optics, Receivers, Signal attenuation, Atmospheric propagation, Adaptive optics, Transmitters, Climatology, Fiber optic gyroscopes, Particles

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Showing 5 of 20 publications

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