Dr. Tomas Horvath Profile

Dr. Tomas Horvath

at CESNET zspo

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Author

Publications (14)

Proceedings Article | 3 October 2024 Presentation + Paper

GÉANT plans towards fibre infrastructure for the distribution of time and frequency throughout Europe

Josef Vojtech, Guy Roberts, Tomas Novak, Michal Spacek, Elisabeth Andriantsarazo, Vladimir Smotlacha, Ondrej Havlis, Tomas Horvath, Rudolf Vohnout, Martin Slapak, Jaroslav Roztocil, Susanne Naegele-Jackson, Domenico Vicinanza, Harald Schnatz, Jochen Kronjaeger, Jacques-Olivier Gaudron, Krzysztof Turza

Proceedings Volume 13144, 131440N (2024) https://doi.org/10.1117/12.3027229

KEYWORDS: Quantum networks, Quantum frequencies, Optical coherence, Laser frequency, Quantum communications, Optical clocks, Metrology, Laser optics, Earthquakes

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Proceedings Article | 20 June 2024 Poster + Paper

Standard single-mode fiber and hollow-core fiber sensitivity to acoustic vibrations in audible spectrum

Petr Dejdar, Pavel Zaviska, Adrian Tomasov, Tomas Horvath, Petr Munster

Proceedings Volume 12999, 129992R (2024) https://doi.org/10.1117/12.3022465

KEYWORDS: Acoustics, Single mode fibers, Vibration, Sensors, Vacuum chambers, Telecommunications, Reflection, Optical fibers, Mach Zehnder interferometers, Curvature sensing

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Proceedings Article | 18 June 2024 Poster + Paper

Acoustic insights: advancing object classification in urban landscapes using distributed acoustic sensing and convolutional neural networks

Adrian Tomasov, Jan Bukovsky, Pavel Zaviska, Tomas Horvath, Michal Latal, Petr Munster

Proceedings Volume 13017, 1301715 (2024) https://doi.org/10.1117/12.3021990

KEYWORDS: Fiber optics sensors, Convolutional neural networks, Machine learning, Telecommunications, Fiber optics, Cross validation

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Proceedings Article | 20 October 2023 Presentation + Paper

Towards shared fiber dissemination infrastructure for precise time, coherent optical frequency, and entanglement transfers with sensing option

Josef Vojtech, Tomas Novak, Elisabeth Andriantsarazo, Vladimir Smotlacha, Ondrej Havlis, Rudolf Vohnout, Michal Spacek, Martin Slapak, Tomas Horvath, Lada Altmannova, Radek Velc, Petr Pospisil, Jan Kundrat, Martin Cizek, Jan Hrabina, Simon Rerucha, Lenka Pravdova, Josef Lazar, Ondrej Cip, Alexander Kuna, Jaroslav Roztocil

Proceedings Volume 12686, 1268604 (2023) https://doi.org/10.1117/12.2677256

KEYWORDS: Optical transmission, Optical coherence, Time metrology, Quantum entanglement, Quantum networks, Quantum key distribution, Quantum frequencies, Quantum coherence, Wavelength division multiplexing networks

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Proceedings Article | 27 May 2022 Presentation + Paper

Physical fiber security by the state of polarization change detection

Adrian Tomasov, Petr Dejdar, Tomas Horvath, Petr Munster

Proceedings Volume 12105, 1210507 (2022) https://doi.org/10.1117/12.2618490

KEYWORDS: Polarization, Network security, Signal detection, Sensors, Computer security, Signal processing, Optical networks, Beam splitters, Transportation security, Transceivers

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Proceedings Article | 27 May 2022 Presentation + Paper

Vibration caused by train detection using state-of-polarization changes measurement

Petr Dejdar, Adrian Tomasov, Petr Munster, Tomas Horvath

Proceedings Volume 12105, 1210506 (2022) https://doi.org/10.1117/12.2618739

KEYWORDS: Sensors, Polarization, Data acquisition, Fiber optics sensors, Optical fibers, Time division multiplexing, Telecommunications, Photodetectors, Single mode fibers, Signal attenuation

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Proceedings Article | 1 August 2021 Presentation + Paper

Large scale infrastructure for precise time and frequency bidirectional transmission

Josef Vojtech, Ondrej Havlis, Martin Slapak, Vladimir Smotlacha, Tomas Horvath, Lada Altmannova, Radek Velc, Jan Kundrat, Rudolf Vohnout, Sarbojeet Bhowmick, Michal Hazlinsky, Martin Cizek, Jan Hrabina, Lenka Pravdova, Ondrej Cip, Jaroslav Roztocil

Proceedings Volume 11830, 1183002 (2021) https://doi.org/10.1117/12.2592328

KEYWORDS: Networks, Optical amplifiers, Telecommunications, Radio optics, Clocks, Optical networks, Signal detection, Semiconductor optical amplifiers, Optical clocks, Time metrology

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Proceedings Article | 19 April 2021 Poster + Presentation + Paper

Towards Czech national research infrastructure for Clock Network Services

Josef Vojtech, Vladimir Smotlacha, Ondrej Havlis, Martin Slapak, Jan Kundrat, Sarbojeet Bhowmick, Rudolf Vohnout, Radek Velc, Lada Altmannova, Tomas Horvath, Martin Cizek, Jan Hrabina, Simon Rerucha, Lenka Pravdova, Josef Lazar, Ondrej Cip, Alexander Kuna, Jaroslav Roztocil

Proceedings Volume 11772, 117721H (2021) https://doi.org/10.1117/12.2589156

KEYWORDS: Clocks, Precision optics, Optical fibers, Metrology, Time metrology, Photonics, Optical networks, Electronics, Electrical engineering

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Proceedings Article | 9 September 2019 Presentation + Paper

Alternative spectral windows for photonic services distribution

Josef Vojtech, Ondrej Havlis, Martin Slapak, Sarbojeet Bhowmick, Jan Radil, Petr Munster, Tomas Horvath, Radek Velc, Jan Kundrat, Lada Altmannova, Vladimir Smotlacha, Rudolf Vohnout, Jan Hrabina, Martin Cizek, Lenka Pravdova, Simon Rerucha, Ondrej Cip, Radan Slavik, Libor Marecek, Pavel Skoda, Michal Hazlinsky

Proceedings Volume 11128, 1112806 (2019) https://doi.org/10.1117/12.2529713

KEYWORDS: Remote sensing, Time metrology, L band, Optical fibers, Optical amplifiers, Signal attenuation, Wavelength division multiplexing, S band, Modulation, Single mode fibers, Fiber amplifiers, Dense wavelength division multiplexing

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Proceedings Article | 18 December 2018 Paper

Optical amplification for quantum sources of ultra-stable optical frequency

Josef Vojtech, Ondrej Havlis, Martin Slapak, Jan Radil, Petr Munster, Tomas Horvath, Lada Altmannova, Radek Velc, Jan Kundrat, Rudolf Vohnout, Pavel Skoda, Michal Altmann, Vladimir Smotlacha, Michal Hazlinsky, Ondrej Cip, Martin Cizek, Jan Hrabina, Lenka Pravdova, Vaclav Hucl, Simon Rerucha

Proceedings Volume 10976, 109760Q (2018) https://doi.org/10.1117/12.2513641

KEYWORDS: Optical amplifiers, Fiber amplifiers, Data transmission, Interference (communication), Photons, Semiconductor optical amplifiers, Quantum optics, S band

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Proceedings Article | 18 September 2018 Paper

Multi-purpose infrastructure for dissemination of precise stable optical frequency

Josef Vojtech, Ondrej Havlis, Martin Slapak, Radek Velc, Petr Munster, Tomas Horvath, Jan Kundrat, Vladimir Smotlacha, Jan Hrabina, Martin Cizek, Lenka Pravdova, Simon Rerucha, Ondrej Cip, Radan Slavik, Rudolf Vohnout, Jan Radil, Pavel Skoda, Lada Altmannova, Michal Altmann, Michal Hazlinsky

Proceedings Volume 10765, 1076507 (2018) https://doi.org/10.1117/12.2321333

KEYWORDS: Optical amplifiers, Optical fibers, Optical filters, Data transmission, Wavelength division multiplexing, Reflection

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Proceedings Article | 23 August 2017 Paper

Optical stabilization for time transfer infrastructure

Josef Vojtech, Michal Altmann, Pavel Skoda, Tomas Horvath, Martin Slapak, Vladimir Smotlacha, Ondrej Havlis, Petr Munster, Jan Radil, Jan Kundrat, Lada Altmannova, Radek Velc, Miloslav Hula, Rudolf Vohnout

Proceedings Volume 10373, 1037310 (2017) https://doi.org/10.1117/12.2274815

KEYWORDS: Dense wavelength division multiplexing, Coarse wavelength division multiplexing, Free space optics, Wavelength division multiplexing, Optical networks, Dispersion

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Proceedings Article | 27 April 2017 Presentation + Paper

Simultaneous transmission of the high-power phase sensitive OTDR, 100Gbps dual polarisation QPSK, accurate time/frequency, and their mutual interferences

P. Munster, J. Radil, J. Vojtech, O. Havlis, T. Horvath, V. Smotlacha, E. Skaljo

Proceedings Volume 10208, 102080D (2017) https://doi.org/10.1117/12.2267259

KEYWORDS: Dispersion, Optical amplifiers, Signal attenuation, Signal detection, Polarization, Sensors, Fiber optics sensors, Data transmission, Modulation, Optical fibers, Sensor networks, Complex systems

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SPIE Journal Paper | 6 February 2017 Open Access

Joint accurate time and stable frequency distribution infrastructure sharing fiber footprint with research network

Josef Vojtech, Martin Slapak, Pavel Skoda, Jan Radil, Ondrej Havlis, Michal Altmann, Petr Munster, Radek Velc, Jan Kundrat, Lada Altmannova, Rudolf Vohnout, Tomas Horvath, Miloslav Hula, Vladimir Smotlacha, Martin Cizek, Lenka Pravdova, Simon Rerucha, Jan Hrabina, Ondrej Cip

OE, Vol. 56, Issue 02, 027101, (February 2017) https://doi.org/10.1117/12.10.1117/1.OE.56.2.027101

KEYWORDS: Bragg cells, Picosecond phenomena, Optical amplifiers, Fiber amplifiers, Wavelength division multiplexing, Optical fibers, Transmitters, Optical engineering, Calibration, Fiber Bragg gratings

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