Presentation + Paper
12 March 2024 Coherent optical feeder links for very high throughput satellite systems
Lucien Canuet
Author Affiliations +
Proceedings Volume 12877, Free-Space Laser Communications XXXVI; 128770E (2024) https://doi.org/10.1117/12.3002913
Event: SPIE LASE, 2024, San Francisco, California, United States
Abstract
Satellite-to-ground optical feeder links are envisioned in the framework of Very-High-Throughput-Satellite (VHTS) systems. Such optical feeder links need to provide aggregated useful data rates in the range of several hundred Giga-bits-per-second (Gbps). To reach this goal, one of the required fundamental technologies consists in the transmission of more spectrally and energy efficient modulation format relying on coherent intradyne detection. The latter enables complex modulation formats and the use of both polarizations of the signal to transmit polarization-multiplexed data streams. Such coherent intradyne transceivers commonly used for fiber-based applications rely on digital signal processing to recover information after having compensated a range of transmission impairments. Free-space optical communication through the atmosphere for satellite-to-ground link presents fundamentally different characteristics from which stem deleterious impairments to the signal’s quality. We present an investigation through end-to-end simulations of the performance of coherent transceivers for use in optical feeder links based VHTS systems. To base our analysis on realistic channel conditions, we use data acquired during the first demonstration of an Adaptive Optics (AO) pre-compensated uplink to a Geosynchronous (GEO) satellite as well as data generated by a representative laboratory emulator.
Conference Presentation
© (2024) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Lucien Canuet "Coherent optical feeder links for very high throughput satellite systems", Proc. SPIE 12877, Free-Space Laser Communications XXXVI, 128770E (12 March 2024); https://doi.org/10.1117/12.3002913
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KEYWORDS
Forward error correction

Adaptive optics

Receivers

Atmospheric optics

Channel projecting optics

Satellites

Polarization

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