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Proceedings Paper

Performance of a phased array semiconductor laser source for coherent laser communications
Author(s): David K. Probst; Robert R. Rice
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Paper Abstract

A semiconductor laser phased-array transmitter is described that operates by coherently combining the output of many semiconductor laser amplifiers to form a near-diffraction-limited beam in the far field with sufficient power for most free-space optical communications applications. Because the outputs of the amplifiers are coherently combined, modulation formats requiring coherent detection can be used with this type of transmitter. A one-dimensional phased array of semiconductor optical amplifiers is used to amplify a 200 Mbps PSK signal which is then detected using a self-homodyne technique. The communications performance when the phased array is used is not degraded compared to the performance when the array is not used. In addition, the array introduces no additional phase noise to cause performance degradation.

Paper Details

Date Published: 1 June 1991
PDF: 12 pages
Proc. SPIE 1417, Free-Space Laser Communication Technologies III, (1 June 1991); doi: 10.1117/12.43765
Show Author Affiliations
David K. Probst, McDonnell Douglas Electronic Systems Co. (United States)
Robert R. Rice, McDonnell Douglas Electronic Systems Co. (United States)


Published in SPIE Proceedings Vol. 1417:
Free-Space Laser Communication Technologies III
David L. Begley; Bernard D. Seery, Editor(s)

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