Share Email Print

Proceedings Paper

Three-stage tracking approach in development of a free-space laser communicator
Format Member Price Non-Member Price
PDF $14.40 $18.00
cover GOOD NEWS! Your organization subscribes to the SPIE Digital Library. You may be able to download this paper for free. Check Access

Paper Abstract

We report the concept and preliminary test results of development of a three-stage beam tracking system for demonstration of a Gbps free-space laser communicator. The development goal has been high-speed optical inter-satellite communications. The tracking system consists of three sub-systems: the coarse tracker (a 10.5 cm-diameter motorized Maksutov telescope with acquisition sensor); the intermediate electro-optical tracker (a voice-coil and a Si-based position detector), and the nonlinear optical fine tracker (a nonlinear cell with a liquid crystal). Three-stage tracking allows for efficient compensation of jitter of up to kHz while maintaining a sub-microradian pointing precision. A combination of the tracking system with a signal feed / modulation unit has been designed to demonstrate a 2.5-10 Gbps-level performance at distances of about 5-7 km.

Paper Details

Date Published: 1 September 2006
PDF: 10 pages
Proc. SPIE 6304, Free-Space Laser Communications VI, 63041Q (1 September 2006); doi: 10.1117/12.680629
Show Author Affiliations
Alexander S. Koujelev, Canadian Space Agency (Canada)
Alexander E. Dudelzak, Canadian Space Agency (Canada)

Published in SPIE Proceedings Vol. 6304:
Free-Space Laser Communications VI
Arun K. Majumdar; Christopher C. Davis, Editor(s)

© SPIE. Terms of Use
Back to Top