Dr. Anaëlle Maho Profile

Dr. Anaëlle Maho

at Thales Alenia Space

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Author

Publications (12)

Proceedings Article | 12 July 2023 Open Access

Experimental assessment of various optical communication chains for high-capacity optical feeder links

A. Maho, S. Levêque, A. Le Kernec, B. Benazet, A. Montmerle Bonnefois, J.-M. Conan, C. Lim, J. Montri, P. Perrault, C. Petit, B. Sorrente, L. Paillier, N. Védrenne, D. Matter, L. Pommarel, H. Lindberg, L. Francou, M. Soton

Proceedings Volume 12777, 127771C (2023) https://doi.org/10.1117/12.2689279

KEYWORDS: Free space optics, Optical transmission, Optical communications, Adaptive optics, Modulation, Channel projecting optics, Atmospheric propagation, Atmospheric optics, Turbulence, Astronomical imaging

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Proceedings Article | 12 July 2023 Open Access

Electro-absorption modulated laser for analog and digital satellite payload applications

Mickaël Faugeron, Anaëlle Maho, Thomas Robe, P. Armet, M. Picq, B. Charrat, Benoît Benazet, Michel Sotom

Proceedings Volume 12777, 127774M (2023) https://doi.org/10.1117/12.2690852

KEYWORDS: Free space optics, Transmitters, RF photonics, Analog electronics, Modulation, Optical transmission, Digital modulation, Analog modulation, Satellites, Laser applications

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Proceedings Article | 4 March 2022 Presentation + Paper

H2020-SPACE-ORIONAS miniaturized optical transceivers and amplifiers for high-speed optical inter-satellite links

L. Stampoulidis, A. Osman, I. Sourikopoulos, M. Welch, J. Edmunds, S. Kehayas, G. Winzer, L. Zimmermann, W. Dorward, A. Serrano Rodrigo, M. Chiesa, Davide Rotta, A. Maho, M. Faugeron, M. Sotom, F. Caccavale, F. Duport, A. Sancho, D. Mesquita

Proceedings Volume 11993, 119930E (2022) https://doi.org/10.1117/12.2609596

KEYWORDS: Photonic integrated circuits, Optical amplifiers, Receivers, Optical fabrication, Integrated optics, Transceivers, Fiber amplifiers, Waveguides, Photonics

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Proceedings Article | 4 March 2022 Presentation + Paper

Robust free space optical communication receiver based on a spatial mode demultiplexer and a silicon photonic coherent combining circuit

Vincent Billault, Jérôme Bourderionnet, Luc Leviandier, Patrick Feneyrou, Anaëlle Maho, Michel Sotom, Xavier Normandin, Herve Lonjaret, Arnaud Brignon

Proceedings Volume 11993, 1199304 (2022) https://doi.org/10.1117/12.2606217

KEYWORDS: Receivers, Free space optics, Wavefronts, Demultiplexers, Atmospheric optics, Satellites, Atmospheric turbulence, Silicon photonics, Photonic integrated circuits

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Proceedings Article | 11 June 2021 Open Access

Free-space optical communication technologies will enable next generation of ultra high throughput satellite

Jean-Didier Gayrard, Anaëlle Maho, Michel Sotom

Proceedings Volume 11852, 118525V (2021) https://doi.org/10.1117/12.2600017

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Ultra or Very High Throughput Satellites (U/VHTS), operating in the Ka-band (20/30GHz), are very large satellites with multi-beam coverage able to provide several hundreds of Gigabits up to few Terabits per second of aggregated throughput. The supply of these huge amounts of data to such a satellite is done by hundreds of wideband RF links, called feeder links, which operate in Ka-band (30GHz) and in Q/V-band (40/50GHz) between the satellite and a network of hundreds of ground (feeder/gateway) stations. Moreover, the poor availability of Q/V-band links in wet regions (such as Europe) requires additional back-up gateways (site diversity technique), further increasing the size of the ground network. In short, the cost of developing and operating such large station network becomes the major part of the cost of a VHTS and could become an obstacle to the development of the future generation of VHTS whose ambition is to exceed the Terabit of capacity. Today, none of the known techniques to reduce the number of gateway/feeder stations gives full satisfaction and have enough room for improvement. Thanks to an ESA supported study, nicknamed MATRIX for “Innovative fractionated satellite system enabling higher reuse of frequency”, Thales Alenia Space studied a very promising solution. The technical and economic feasibility of this new solution based on the concept of fractionation applied here to VHTS and on free space optical communication technologies, was demonstrated. The key feature of fractionated VHTS is Optical Inter-Satellite Links (OISL) that backhaul data intended to users from the Feeder Satellites to the User Satellite. Advantageously, these OISL makes use of analogue RF modulation of optical carriers. So, it allows deporting most of signal processing in the Feeder Satellites and therefore simplifying and alleviating the User Satellite. Finally, fractionated VHTS will allow a smooth and risk-free transition from RF feeder links to digital FSO feeder links. This paper presents the concept of fractionated VHTS as developed in the MATRIX study and highlights the role and benefits of FSO communication technologies in the development and operation of future Ultra High Throughput Satellite systems. It will focus on the Optical Inter-satellite Links, cornerstone of the system.

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Proceedings Article | 11 June 2021 Open Access

The H2020-SPACE-ORIONAS project: “Lasercom-on-chip” for high-speed satellite constellation interconnectivity

Leontios Stampoulidis, A. Osman, I. Sourikopoulos, G. Winzer, L. Zimmermann, Anaëlle Maho, M. Faugeron, M. Sotom, F. Caccavale, A. Serrano Rodrigo, M. Chiesa, D. Rotta, G. B. Preve, J. Edmunds, M. Welch, E. Kehayas, W. Dorward, F. Duport, R. Costa, D. Mesquita, L. Stampoulidis

Proceedings Volume 11852, 118521L (2021) https://doi.org/10.1117/12.2599248

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Proceedings Article | 11 June 2021 Open Access

The H2020-SPACE-SIPHODIAS project: space-grade opto-electronic interfaces for photonic digital and analogue very-high-throughput satellite payloads

I. Sourikopoulos, L. Stampoulidis, S. Giannakopoulos, H. Zirath, P. Ostrovskyy, G. Fischer, M. Faugeron, A. Maho, L. Cyrille, G. Bouisset, N. Venet, M. Sotom, M. Irion, F. Schaub, J. Barbero, D. Lopez, R. Walker, Y. Zhou, I. Oxtoby, S. Duffy

Proceedings Volume 11852, 1185254 (2021) https://doi.org/10.1117/12.2599927

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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 | 12 July 2019 Open Access

High-speed low-power and board-mountable optical transceivers for scalable & energy efficient advanced on‐board digital processors

L. Stampoulidis, E. Kehayas, M. Karppinen, A. Tanskanen, J. Ollila, J. Gustavsson, A. Larsson, L. Grüner-Nielsen, Christian Larsen, M. Sotom, Anaelle Maho, Mickael Faugeron, N. Venet, M. Ko, P. Ostrovskyy, D. Kissinger, R. Safaisini, R. King, I. McKenzie, J. Gonzalez

Proceedings Volume 11180, 111804C (2019) https://doi.org/10.1117/12.2536075

KEYWORDS: Vertical cavity surface emitting lasers, Transceivers, Optical fabrication, Connectors, Accelerated life testing, Prototyping, Modulation, Eye, Gamma radiation, Channel projecting optics

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Proceedings Article | 12 July 2019 Open Access

High-performance DFB laser module for space applications: the FP7 HiPPO achievements from chip fabrication to system validation

M. Faugeron, B. Benazet, A. Maho, A. Le Kernec, M. Sotom, F. Van Dijk, J. Le Goëc, O. Parillaud, L. Stampoulidis, P. Henderson, S. Snowden, E. Kehayas

Proceedings Volume 11180, 111803J (2019) https://doi.org/10.1117/12.2536046

KEYWORDS: Laser applications, RF photonics, Free space optics, Laser development, Free space optical communications, Frequency conversion, High power lasers, Telecommunications, Satellites, Laser damage threshold

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Proceedings Article | 12 July 2019 Open Access

Assessment of the effective performance of DPSK vs. OOK in satellite-based optical communications

A. Maho, M. Faugeron, A. Le Kernec, K. Elayoubi, M. Sotom

Proceedings Volume 11180, 111805T (2019) https://doi.org/10.1117/12.2536128

KEYWORDS: Free space optics, Satellites, Receivers, Satellite communications, Optical filters, Optical communications, Doppler effect, Transmitters, Modulation, Telecommunications

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Proceedings Article | 14 March 2018 Presentation

Multichannel VCSEL-based optical transceiver employing multicore fibers at 6x25 Gbps/fiber (Conference Presentation)

Mikko Karppinen, Antti Tanskanen, Jyrki Ollila, Johan Gustavsson, Anders Larsson, Minsu Ko, Dietmar Kissinger, Lars Grüner-Nielsen, Christian Larsen , Rashid Safaisini, Anaëlle Maho, Michel Sotom, Leontios Stampoulidis

Proceedings Volume 10538, 105380C (2018) https://doi.org/10.1117/12.2295678

KEYWORDS: Optical fibers, Transceivers, Vertical cavity surface emitting lasers, Receivers, Optoelectronics, Transmitters, Photodiodes, Packaging, Temperature metrology, Reliability

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