Dr. Nicolas Perlot Profile

Dr. Nicolas Perlot

at Fraunhofer HHI

SPIE Involvement:

Author

Publications (25)

Proceedings Article | 15 March 2023 Presentation + Paper

18km bidirectional free-space optical link with multi-aperture antenna and DWDM SFP+ transceivers (VERTIGO project)

Nicolas Perlot, Peter Hanne, Abraham Johst, Marcel Rothe, Bill Antonio Bernhardt, Anagnostis Paraskevopoulos, Ronald Freund

Proceedings Volume 12413, 124130W (2023) https://doi.org/10.1117/12.2652245

KEYWORDS: Satellites, Laser communication terminals, Optical amplifiers, Free space optics, Field programmable gate arrays, Single mode fibers, Scintillation, Transceivers, Dense wavelength division multiplexing, Antennas

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Proceedings Article | 30 May 2022 Presentation + Paper

Ultra-fast single-photon counting with waveguide-integrated detectors for quantum technologies

Fabian Beutel, Matthias Häußler, Robin Terhaar, Martin Wolff, Wladick Hartmann, Nicolai Walter, Max Tillmann, Michael Wahl, Tino Röhlicke, Mahdi Ahangarianabhari, Andreas Bülter, Doreen Wernicke, Nicolas Perlot, Jasper Rödiger, Carsten Schuck, Wolfram H. Pernice

Proceedings Volume 12089, 1208907 (2022) https://doi.org/10.1117/12.2620329

KEYWORDS: Sensors, Quantum key distribution, Single photon detectors, Waveguides, Quantum communications, Photonics, Picosecond phenomena, Nanowires, Ultrafast phenomena, Superconductors

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Proceedings Article | 5 March 2022 Presentation + Paper

Multi-channel waveguide-integrated superconducting nanowire single-photon detector system for ultrafast quantum key distribution

Robin Terhaar, Matthias Häußler, Helge Gehring, Martin Wolff, Fabian Beutel, Nicolai Walter, Wladick Hartmann, Max Tillmann, Michael Wahl, Tino Röhlicke, Andreas Bülter, Doreen Wernicke, Nicolas Perlot, Jasper Rödiger, Carsten Schuck, Wolfram Pernice

Proceedings Volume 12009, 120090K (2022) https://doi.org/10.1117/12.2609887

KEYWORDS: Quantum key distribution, Single photon detectors, Sensors, Nanowires, Waveguides, Superconductors, Single photon, Signal detection

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Proceedings Article | 11 June 2021 Open Access

The H2020 VERTIGO project towards tbit/s optical feeder links

A. Le Kernec, L. Canuet, A. Maho, M. Sotom, D. Matter, L. Francou, J. Edmunds, M. Welch, E. Kehayas, N. Perlot, M. Krzyzek, Anagnostis Paraskevopoulos, J. Leuthold, Y. Horst, J. Bourderionnet, A. Brignon, E. Lallier, V. Billault, L. Leviandier, J.-M. Conan, N. Védrenne, C. Lim, A. Montmerle-Bonnefois, C. Petit, L. Stampoulidis, M. Fehrenz, T. Lehnigk-Emden

Proceedings Volume 11852, 1185217 (2021) https://doi.org/10.1117/12.2599229

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To concurrently cope with the scarcity of RF frequency bands, the growing capacity demand and the required lower cost of the ground segment, Very High Throughput Satellites systems must rely on new technical solutions. Optical feeder links are considered as a promising alternative to surpass classical RF technology, offering assets inherent to optical technologies (large bandwidth, no frequency regulation, low beam divergence, components availability). Nevertheless the potential of this technology shall not conceal the remaining challenges to be overcome to make it relevant for operational missions : clouds, turbulence, power generation and high efficiency modulations. VERTIGO (Very High Throughput Satellite Ground Optical Link) is a 3-year H2020 project funded by the European commission and started mid-2019 focusing on the optical link itself regardless of site diversity aspect and aiming at demonstrating in a ground demonstration required technologies to implement very high capacity optical feeder links. In particular, VERTIGO is built on 3 pillars each addressing a key issue for the implementation of optical feerder links: 1) Throughput increase through the use of advanced schemes with high spectral and power efficiency compared to current modulations used in space, as well as RF-over-Fiber approach. 2) High optical power generation to close the demanding link budgets by developing on-board and ground means to raise the transmitted optical power, not only based on amplifier power increase, but also on incoherent/coherent power combining. 3) Opto-mechanical and digital techniques for the mitigation of atmospheric propagation impairments, to make full use of throughput and power increases. Several demonstrations in-flight or on-ground already demonstrated separately key aspects (atmospheric propagation and impairments mitigation techniques, modulation format, high power…), for the implementation of optical (feeder) links. These aspects are closely linked since the solutions to each of them are necessary but not sufficient to allow for high throughput transmissions. VERTIGO concept is to address each key issue with at least one solution and to combine them in an unprecedented manner. To reach these objectives, VERTIGO will lean on a highly skilled consortium composed of : CREONIC, ETH Zürich, Fraunhofer HHI, Gooch and Housego, Leo Space Photonics RD, ONERA, Thales Research and Technology, Thales Alenia Space in France and Switzerland. This paper will present the VERTIGO project and its status.

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Proceedings Article | 11 June 2021 Open Access

Power and spectrum efficiencies of an optical satellite uplink with spatially diverse beams and incoherent combining

H. Ordouei, M. Krzyzek, N. Perlot, R. Freund

Proceedings Volume 11852, 118524H (2021) https://doi.org/10.1117/12.2599660

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Existing radio-based satellite up- and downlinks are reaching their limits in terms of transmission rate. In order to enable higher data rates, optical links are being researched and developed. On ground, spatially displaced multi-aperture systems using different wavelengths can mitigate atmospheric scintillation and increase the uplink transmit power. A four-aperture free-space optical communication system was demonstrated at Fraunhofer HHI over a bidirectional link. For the representative uplink, each array aperture sent a beam carrying the same data but over a different wavelength to avoid inter-beam interferences. At the receiver, the combined signals are optically amplified, optically filtered, incoherently photodetected and electrically filtered. Signal path delays are pre-compensated on the ground-station site. This system shall be scaled up for a long-range demonstration within the EU-funded H2020-project VERTIGO. In this paper, we investigate the performance and scalability of this uplink configuration. When targeting a capacity of Terabits/s, spectral efficiency must be carefully addressed. Direct detection with optical pre-amplification of OOK or DPSK signals is a conventional optical fiber receiver technique, for which the bandwidth of the optical filter can be kept larger than the signal bandwidth only to a certain extent. Above a certain optical filter bandwidth relative to the signal bandwidth, degradation of the signal-to-noise ratio (SNR) becomes significant because of a stronger ASE×ASE noise term. We focus on optimizing power and spectral efficiencies as these are impacted by the introduction of diversity channels. Because these optimizations are essentially independent of the fading channel, we do not assess the reduction of scintillation through channel diversity. We formulate the SNR in terms of number of uplink beams, filter bandwidths (optical and electrical), wavelength channel spacing and received power (in photons per bit). Although the SNR is ideally proportional to the received power, we show how increasing the number of beams while keeping the total received power constant will result in a significant SNR degradation at some point. An optimum for the optical filter bandwidth and for the spacing between the wavelength-division diversity channels is investigated. Polarization-division spatial diversity is kept as an option.

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Proceedings Article | 12 July 2019 Open Access

Tracking challenges of QKD over relay satellite

S. Sharma, N. Perlot, J. Rödiger, R. Freund

Proceedings Volume 11180, 1118062 (2019) https://doi.org/10.1117/12.2536137

KEYWORDS: Satellites, Quantum key distribution, Relays, Mirrors, Atmospheric propagation, Satellite communications, Wave propagation, Signal attenuation, Quantum communications, Turbulence

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Proceedings Article | 25 September 2017 Open Access

Benefits of time-frequency coding for quantum key distribution

J. Rödiger, N. Perlot, O. Benson, R. Freund

Proceedings Volume 10562, 105623N (2017) https://doi.org/10.1117/12.2296180

KEYWORDS: Quantum key distribution, Satellites, Time-frequency analysis, Satellite communications, Single mode fibers, Astronomical imaging, Polarization, Single photon, Optical filters, Quantum communications

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Proceedings Article | 24 February 2017 Presentation + Paper

Optimization and throughput estimation of optical ground networks for LEO-downlinks, GEO-feeder links and GEO-relays

Christian Fuchs, Sylvain Poulenard, Nicolas Perlot, Jerome Riedi, Josep Perdigues

Proceedings Volume 10096, 1009612 (2017) https://doi.org/10.1117/12.2254795

KEYWORDS: Optical networks, Clouds, Relays, Atmospheric optics, Databases, Satellites, Data acquisition, Sensors, MODIS, Turbulence

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Proceedings Article | 24 February 2017 Presentation + Paper

Digital optical feeder links system for broadband geostationary satellite

Sylvain Poulenard, Alexandre Mège, Christian Fuchs, Nicolas Perlot, Jerome Riedi, Josep Perdigues

Proceedings Volume 10096, 1009614 (2017) https://doi.org/10.1117/12.2255987

KEYWORDS: Radio optics, Satellites, Telecommunications, Atmospheric optics, Adaptive optics, Data communications, Broadband telecommunications, Satellite communications, Optical networks, Data modeling, Clouds, Field programmable gate arrays, Atmospheric turbulence, Channel projecting optics, Spatial resolution

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Proceedings Article | 29 October 2015 Paper

Preliminary results of Terabit-per-second long-range free-space optical transmission Experiment THRUST

D. Giggenbach, J. Poliak, R. Mata-Calvo, C. Fuchs, N. Perlot, R. Freund, T. Richter

Proceedings Volume 9647, 96470H (2015) https://doi.org/10.1117/12.2193902

KEYWORDS: Atmospheric optics, Receivers, Satellites, Turbulence, Dense wavelength division multiplexing, Scintillation, Free space optics, Telecommunications, Telescopes, Adaptive optics

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Proceedings Article | 24 October 2012 Paper

Probability distributions of link durations with n disruptive channels: application to ground-space optical communications

Nicolas Perlot, Florian Moll

Proceedings Volume 8517, 851710 (2012) https://doi.org/10.1117/12.930604

KEYWORDS: Switches, Clouds, Optical communications, Space operations, Sun, Statistical analysis, Network security, Atmospheric propagation, Data modeling, Free space optical communications

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Proceedings Article | 23 February 2012 Paper

Throughput maximization of optical LEO-ground links

Nicolas Perlot, Tomaso de Cola

Proceedings Volume 8246, 82460V (2012) https://doi.org/10.1117/12.908682

KEYWORDS: Satellites, Signal attenuation, Satellite communications, Mass attenuation coefficient, Telecommunications, Optical communications, Navigation systems, Optical spheres, Turbulence, Satellite navigation systems

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Proceedings Article | 23 February 2012 Paper

Model-oriented availability analysis of optical GEO-ground links

Nicolas Perlot, Josep Perdigues-Armengol

Proceedings Volume 8246, 82460P (2012) https://doi.org/10.1117/12.908706

KEYWORDS: Clouds, Signal attenuation, Data modeling, Binary data, Atmospheric modeling, Space operations, Multiplexing, Space telescopes, Transceivers, Multiplexers

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Proceedings Article | 13 February 2007 Paper

Tracking and pointing characteristics of OICETS optical terminal in communication demonstrations with ground stations

Yoshihisa Takayama, Takashi Jono, Morio Toyoshima, Hiroo Kunimori, Dirk Giggenbach, Nicolas Perlot, Markus Knapek, Koichi Shiratama, Junya Abe, Katsuyoshi Arai

Proceedings Volume 6457, 645707 (2007) https://doi.org/10.1117/12.708417

KEYWORDS: Sensors, Optical antennas, Optical communications, Optical tracking, Satellites, Laser communications, Aerospace engineering, Satellite communications, Communication engineering, Sun

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Proceedings Article | 12 February 2007 Paper

Results of the optical downlink experiment KIODO from OICETS satellite to optical ground station Oberpfaffenhofen (OGS-OP)

N. Perlot, M. Knapek, D. Giggenbach, J. Horwath, M. Brechtelsbauer, Y. Takayama, T. Jono

Proceedings Volume 6457, 645704 (2007) https://doi.org/10.1117/12.708413

KEYWORDS: Scintillation, Satellites, Telescopes, Cameras, Clouds, Sensors, Adaptive optics, Aerospace engineering, Optical testing, Free space optical communications

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SPIE Journal Paper | 1 February 2007

Evaluation of the scintillation loss for optical communication systems with direct detection

Nicolas Perlot

OE, Vol. 46, Issue 02, 025003, (February 2007) https://doi.org/10.1117/12.10.1117/1.2436866

KEYWORDS: Scintillation, Receivers, Optical communications, Telecommunications, Forward error correction, Modulation, Optical engineering, Atmospheric optics, Signal attenuation, Solids

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Proceedings Article | 1 September 2006 Paper

Measurements of the beam-wave fluctuations over a 142 km atmospheric path

N. Perlot, D. Giggenbach, H. Henniger, J. Horwath, M. Knapek, K. Zettl

Proceedings Volume 6304, 63041O (2006) https://doi.org/10.1117/12.681207

KEYWORDS: Scintillation, Receivers, Telescopes, Adaptive optics, Turbulence, Lanthanum, Transmitters, Atmospheric optics, Wavefront distortions, Wavefronts

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Proceedings Article | 1 September 2006 Paper

The DLR ground station in the optical payload experiment (STROPEX): results of the atmospheric measurement instruments

Markus Knapek, Joachim Horwath, Nicolas Perlot, Brandon Wilkerson

Proceedings Volume 6304, 63041U (2006) https://doi.org/10.1117/12.679004

KEYWORDS: Turbulence, Atmospheric optics, Telescopes, Motion measurement, Scintillation, Optical communications, Atmospheric turbulence, Cameras, Receivers, Free space optics

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Proceedings Article | 1 September 2006 Paper

Wavelength-diversity transmission for fading mitigation in the atmospheric optical communication channel

Dirk Giggenbach, Brandon Wilkerson, Hennes Henniger, Nicolas Perlot

Proceedings Volume 6304, 63041H (2006) https://doi.org/10.1117/12.680924

KEYWORDS: Receivers, Turbulence, Atmospheric optics, Refraction, Optical communications, Atmospheric modeling, Free space optical communications, Semiconductor lasers, Transmitters, Numerical simulations

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Proceedings Article | 18 April 2005 Paper

Coherent transmission feasibility analysis

Joachim Horwath, Florian David, Markus Knapek, Nicolas Perlot

Proceedings Volume 5712, (2005) https://doi.org/10.1117/12.589196

KEYWORDS: Signal to noise ratio, Satellites, Receivers, Turbulence, Atmospheric modeling, Atmospheric optics, Atmospheric propagation, Numerical simulations, Oscillators, Homodyne detection

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Proceedings Article | 18 April 2005 Paper

Modeling wind in simulations of atmospheric optical propagation

Nicolas Perlot, Joachim Horwath, Ralf Juengling

Proceedings Volume 5712, (2005) https://doi.org/10.1117/12.590700

KEYWORDS: Atmospheric propagation, Wave propagation, Turbulence, Atmospheric modeling, Atmospheric optics, Picosecond phenomena, Satellites, Statistical analysis, Optical simulations, Stochastic processes

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Proceedings Article | 16 June 2004 Paper

Aperture averaging: theory and measurements

Nicolas Perlot, Daniel Fritzsche

Proceedings Volume 5338, (2004) https://doi.org/10.1117/12.528901

KEYWORDS: Scintillation, Receivers, Turbulence, Charge-coupled devices, CCD cameras, Error analysis, Distortion, Spherical lenses, Quantization, Atmospheric scintillation

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Proceedings Article | 16 June 2004 Paper

Numerical simulations of beam propagation through optical turbulence for high-altitude platform crosslinks

Joachim Horwath, Nicolas Perlot, Dirk Giggenbach, Ralf Jungling

Proceedings Volume 5338, (2004) https://doi.org/10.1117/12.529282

KEYWORDS: Atmospheric propagation, Receivers, Turbulence, Computer simulations, Scintillation, Picosecond phenomena, Beam propagation method, Optical simulations, Numerical simulations, Matrices

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Proceedings Article | 3 July 2003 Paper

Multiple-wavelength free-space laser communications

Robert Purvinskis, Dirk Giggenbach, Hennes Henniger, Nicolas Perlot, Florian David

Proceedings Volume 4975, (2003) https://doi.org/10.1117/12.478932

KEYWORDS: Atmospheric propagation, Turbulence, Free space optical communications, Wave propagation, Receivers, Optical simulations, Atmospheric optics, Atmospheric particles, Absorption, Refraction

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Proceedings Article | 30 April 2003 Paper

Discussion of the direct detection Rx-power distribution as derived from intensity statistics and comparison with measurements

Nicolas Perlot, Dirk Giggenbach, Hermann Bischl, Florian David

Proceedings Volume 4976, (2003) https://doi.org/10.1117/12.479203

KEYWORDS: Scintillation, Atmospheric propagation, Receivers, Convolution, Data modeling, Stochastic processes, Laser beam propagation, Spherical lenses, Turbulence, Atmospheric modeling

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Showing 5 of 25 publications

Conference Committee Involvement (3)

Environmental Effects on Light Propagation and Adaptive Systems III

23 September 2020 | Online Only, United Kingdom

Environmental Effects on Light Propagation and Adaptive Systems II

11 September 2019 | Strasbourg, France

Environmental Effects on Light Propagation and Adaptive Systems

12 September 2018 | Berlin, Germany

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