Turbulent phase noise on asymmetric two-way ground-satellite coherent optical links

Clélia Robert; Jean-Marc Conan; Peter Wolf

doi:10.1117/12.2196655

8 October 2015 Turbulent phase noise on asymmetric two-way ground-satellite coherent optical links

Clélia Robert, Jean-Marc Conan, Peter Wolf

Author Affiliations +

Proceedings Volume 9641, Optics in Atmospheric Propagation and Adaptive Systems XVIII; 96410D (2015) https://doi.org/10.1117/12.2196655
Event: SPIE Remote Sensing, 2015, Toulouse, France

Abstract

Bidirectional ground-satellite laser links suffer from turbulence-induced scintillation and phase distortion. We study how turbulence impacts on coherent detection capacity and on the associated phase noise that restricts clock transfer precision. We evaluate the capacity to obtain a two-way cancellation of atmospheric effects despite the asymmetry between up and down link that limits the link reciprocity. For ground-satellite links, the asymmetry is induced by point-ahead angle and possibly the use, for the ground terminal, of different transceiver diameters, in reception and emission. The quantitative analysis is obtained thanks to refined end-to-end simulations under realistic turbulence and wind conditions as well as satellite cinematic. Simulations make use of the reciprocity principle to estimate both down and up link performance from wave-optics propagation of descending plane waves. These temporally resolved simulations allow characterising the coherent detection in terms of time series of heterodyne efficiency for different system parameters. We show Tip/Tilt correction on ground is mandatory at reception for the down link and as a pre-compensation of the up link. Good correlation between up and down phase noise is obtained even with asymmetric apertures of the ground transceiver and in spite of pointing ahead angle. The reduction to less than 1 rad² of the two-way differential phase noise is very promising for clock transfer.

Citation Download Citation

Clélia Robert, Jean-Marc Conan, and Peter Wolf "Turbulent phase noise on asymmetric two-way ground-satellite coherent optical links", Proc. SPIE 9641, Optics in Atmospheric Propagation and Adaptive Systems XVIII, 96410D (8 October 2015); https://doi.org/10.1117/12.2196655

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

;

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE