Free space optical communication receiver based on a spatial demultiplexer and a photonic integrated coherent combining circuit

Billault, Vincent; Bourderionnet, Jérôme; Mazellier, Jean-Paul; Leviandier, Luc; Maho, Anaëlle; Sotom, M.; Normandin, Xavier; Lonjaret, Herve; Brignon, A.

doi:10.1364/oe.433087

Cited by 31 publications

(10 citation statements)

References 22 publications

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“…2.1) to support spatial shaping of their qubits 34 – 36 We have also identified turbulence mitigation 158 for satellite QKD as a promising application of our low-loss PICs with efficient phase shifters and integrated responsive detectors. We additionally have an ongoing collaboration with the Max Planck Institute for Quantum Optics to implant erbium in our silicon waveguides to achieve quantum emitters with narrow linewidth 159 …”

Section: Other Interesting Applications and Conclusionmentioning

confidence: 94%

Supporting quantum technologies with an ultralow-loss silicon photonics platform

et al. 2023

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Photonic integrated circuits (PICs) are expected to play a significant role in the ongoing second quantum revolution, thanks to their stability and scalability. Still, major upgrades are needed for available PIC platforms to meet the demanding requirements of quantum devices. We present a review of our recent progress in upgrading an unconventional silicon photonics platform toward this goal, including ultralow propagation losses, low-fiber coupling losses, integration of superconducting elements, Faraday rotators, fast and efficient detectors, and phase modulators with low-loss and/or low-energy consumption. We show the relevance of our developments and our vision in the main applications of quantum key distribution, to achieve significantly higher key rates and large-scale deployment; and cryogenic quantum computers, to replace electrical connections to the cryostat with optical fibers.

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Section: Other Interesting Applications and Conclusionmentioning

confidence: 94%

Supporting quantum technologies with an ultralow-loss silicon photonics platform

et al. 2023

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“…[47], [51]), can allow to significantly relax the beam steering requirements. In order to enhance the alignment tolerance, the use of large area few-mode fibers has also been recently proposed [52]- [54], enabling significantly enhanced robustness not only towards pointing errors but also regarding turbulence-induced scintillation [52]. However, the use of few-mode fibers at the receiver end still imposes a significant increase on the receiver complexity, namely requiring an additional component for mode-demultiplexing and a dedicated coherent receiver for each received mode.…”

Section: A Characterization Of Optical Beam Alignment Requirementsmentioning

confidence: 99%

Coherent Free-Space Optical Communications: Opportunities and Challenges

Guiomar

Fernandes

Nascimento

et al. 2022

J. Lightwave Technol.

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The ever-increasing data rate demand for wireless systems is pushing the physical limits of standalone radiofrequency communications, thus fostering the blooming of novel high-capacity optical wireless solutions. This imminent penetration of optical communication technologies into the wireless domain opens up a set of novel opportunities for the development of a new generation of wireless systems providing unprecedented capacity. Unlocking the full potential of free-space optics (FSO) transmission can only be achieved through a seamless convergence between the optical fiber and optical wireless domains. This will allow taking advantage of the staggering progress that has been made on fiber-based communications during the last decades, namely leveraging on the latest generation of Terabit-capable coherent optical transceivers. On the other hand, the development of these high-capacity optical wireless systems still faces a set of critical challenges, namely regarding the impact of atmospheric turbulence and pointing errors. In this work, we provide an in-depth experimental analysis of the main potentialities and criticalities associated with the development of ultra-highcapacity FSO communications, ultimately leading to the longterm (48-hours) demonstration of a coherent FSO transmission system delivering more than 800 Gbps over ∼42 m link length, in an outdoor deployment exposed to time-varying turbulence and meteorological conditions.

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“…While LABS is a viable option for optical beam steering, there have not yet been many demonstrated examples of using LABS for FSOC PAT in the literature. PICs, in general, have been used for FSOC transmitters [34] and receivers [35], but not in conjunction with a lens for optical beam steering. This work presents the first demonstration of LABS using a FPSA for FSOC.…”

Section: Introductionmentioning

confidence: 99%

MOEMS-based Lens-Assisted Beam Steering for Free-Space Optical Communications

Goldman

Serra

Kacker

et al. 2023

J. Lightwave Technol.

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Free-space optical communication (FSOC) systems require precise pointing, acquisition, and tracking to send and receive optical beams for effective operation. In a lens-assisted beam steering (LABS) system, light is steered by controlling the emission location in a focal plane. The emitted light is directed into the scene by a lens, like a camera but operating in reverse. In this paper, we demonstrate a novel free-space optical communications link using a micro-opto-electro-mechanical-system (MOEMS) based photonic integrated circuit (PIC) for LABS between multiple receive locations. The MOEMS PIC operates via selective electrical actuation of an array of small grating switches (30 µm x 30 µm footprint, 100 µm pitch). Data rates up to 10 Gbps and a 3 dB optical bandwidth covering the infrared C and L bands (1530 nm to 1625 nm) are measured over a 1 m free-space link distance. Eye diagrams indicate a quality communications link for data rates up to 10 Gbps and bit-error-rates < 10 -10 are measured for on-off keying (OOK) modulation. A measured beam profile is propagated into the far-field via simulation, and used to calculate link budgets for example CubeSat crosslink and downlink scenarios. Link budget calculations indicate potential > 1 Gbps CubeSat FSOC crosslinks for link lengths > 1000 km and 1 W of input optical power, using identical 90 mm transmit and receive apertures and a commercially-available fiber-coupled InGaAs avalanche photodiode (APD) receive detector.

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Free space optical communication receiver based on a spatial demultiplexer and a photonic integrated coherent combining circuit

Cited by 31 publications

References 22 publications

Supporting quantum technologies with an ultralow-loss silicon photonics platform

Supporting quantum technologies with an ultralow-loss silicon photonics platform

Coherent Free-Space Optical Communications: Opportunities and Challenges

MOEMS-based Lens-Assisted Beam Steering for Free-Space Optical Communications

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