Abstract

Ground-satellite optical links are a promising technology for increasing capacity and security over radio frequency links, while reducing weight and power consumption. However, atmospheric turbulence generates power fadings at the reception terminal. This effect can be mitigated by combining adaptive optics, forward error correction and data interleaving. While adaptive optics has been extensively studied, forward error correction together with long interleaving (e.g., multiple 10 ms) has not yet been demonstrated in this context. In this article, we present a proof of concept of an optical satellite uplink, pre-compensated by adaptive optics, which leverages a long interleaver in an external memory and operates at 10 Gbps with SFP+ transceivers. We account for the issues associated with real-time implementation and interfacing to a high-speed memory. To validate our proof of concept, we generate time-series for a typical ground to geostationary satellite communication link, using a field-validated simulator. Using these time series, we calculate the required interleaver time as a function of the launch power. Finally, we show the impact of different transmitter pupil diameters and of different wind speed profiles, on the interleaver duration.

Statistical and temporal irradiance fluctuations modeling for a ground-to-geostationary satellite optical link

A.-R. Camboulives, M.-T. Velluet, S. Poulenard, L. Saint-Antonin, and V. Michau
Appl. Opt. 57(4) 709-721 (2018)

Experimental analysis of atmospheric channel model with misalignment fading for GEO satellite-to-ground optical link using “LUCAS” onboard optical data relay satellite

Hideaki Kotake, Yuma Abe, Dimitar R. Kolev, Yoshihiko Saito, Yasuhiro Takahashi, Tetsuharu Fuse, Yohei Satoh, Takamasa Itahashi, Shiro Yamakawa, Hiroyuki Tsuji, and Morio Toyoshima
Opt. Express 31(13) 21351-21366 (2023)

Statistical properties of single-mode fiber coupling of satellite-to-ground laser links partially corrected by adaptive optics

Lucien Canuet, Nicolas Védrenne, Jean-Marc Conan, Cyril Petit, Geraldine Artaud, Angelique Rissons, and Jerome Lacan
J. Opt. Soc. Am. A 35(1) 148-162 (2018)

Real-time adaptive optics testbed to investigate point-ahead angle in pre-compensation of Earth-to-GEO optical communication

Nina Leonhard, René Berlich, Stefano Minardi, Alexander Barth, Steffen Mauch, Jacopo Mocci, Matthias Goy, Michael Appelfelder, Erik Beckert, and Claudia Reinlein
Opt. Express 24(12) 13157-13172 (2016)

Experimental simulation of time and frequency transfer via an optical satellite–ground link at 10^-18 instability

Qi Shen, Jian-Yu Guan, Ting Zeng, Qi-Ming Lu, Liang Huang, Yuan Cao, Jiu-Peng Chen, Tian-Qi Tao, Jin-Cai Wu, Lei Hou, Sheng-Kai Liao, Ji-Gang Ren, Juan Yin, Jian-Jun Jia, Hai-Feng Jiang, Cheng-Zhi Peng, Qiang Zhang, and Jian-Wei Pan
Optica 8(4) 471-476 (2021)