Simulation and optimization of a coherent detection and tracking receiver for free-space laser communications

Anton Schex; Stefan Zanner

doi:10.1117/12.238414

22 April 1996 Simulation and optimization of a coherent detection and tracking receiver for free-space laser communications

Anton Schex, Stefan Zanner

Author Affiliations +

Proceedings Volume 2699, Free-Space Laser Communication Technologies VIII; (1996) https://doi.org/10.1117/12.238414
Event: Photonics West '96, 1996, San Jose, CA, United States

Abstract

The simulation and optimization of a high sensitive coherent detection and tracking receiver for free-space laser communications is described. The data and the spatial tracking error signals are obtained with the same set of photodetectors, hereby avoiding systematic losses. Simulation models for the tracking tilt mirror transfer function, the diffraction limited data and tracking receiver gain functions and the performance of the digital signal processing algorithms are derived. The optimization of the telescope's Fresnel-number and of the local laser's Gaussian beamwidth for the photodetectors used in our laboratory system is described. The intermediate frequency current and signal-to-noise ratio of the data signal are compared with theoretical limits.

Citation Download Citation

Anton Schex and Stefan Zanner "Simulation and optimization of a coherent detection and tracking receiver for free-space laser communications", Proc. SPIE 2699, Free-Space Laser Communication Technologies VIII, (22 April 1996); https://doi.org/10.1117/12.238414

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