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Discussion on Design Aspects for Free-Space Optical Communication Terminals

Epple, Bernhard and Henniger, Hennes (2007) Discussion on Design Aspects for Free-Space Optical Communication Terminals. IEEE Communications Magazine, 45 (10), pp. 62-69. ISSN 0163-6804.

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Official URL: http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?isnumber=4342808&arnumber=4342824&count=29&index=15


Free-space optical communications is an emerging solution to increase link capacity of nondetectable links to multigigabits per second. FSO is widely believed as to overcome radio frequency spectrum and data rate limitations. However, one of the biggest challenges facing FSO deployment is its optical signal propagation in different atmospheric conditions. This effect causes variable link degradation due to variable attenuation and fading. Atmospheric turbulence produces temporary pockets of air with slightly different indices of refraction. Therefore the laser beam phase-front varies randomly, producing intensity fluctuation. One further key challenge with FSO systems is maintaining transceiver alignment. Using highly directional and narrow beams of light, variable mispointing of the transmit beam, and tracking errors of the receiver will generate additional signal fading. In this article terminal design aspects are discussed, and problems that occur when building FSO terminals are highlighted.

Document Type:Article
Title:Discussion on Design Aspects for Free-Space Optical Communication Terminals
AuthorsInstitution or Email of Authors
Epple, BernhardUNSPECIFIED
Henniger, HennesUNSPECIFIED
Date:October 2007
Journal or Publication Title:IEEE Communications Magazine
Refereed publication:Yes
In ISI Web of Science:Yes
Page Range:pp. 62-69
IEEE Communications Society, UNSPECIFIED
Keywords:Free space optical communications, Terminal design, KNOCGOP
HGF - Research field:Aeronautics, Space and Transport (old)
HGF - Program:Space (old)
HGF - Program Themes:W KN - Kommunikation/Navigation
DLR - Research area:Space
DLR - Program:W KN - Kommunikation/Navigation
DLR - Research theme (Project):W - Vorhaben Multimedia Satellitennetze (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Communication and Navigation > Digital Networks
Deposited By: Florian Moll
Deposited On:29 Feb 2008
Last Modified:27 Apr 2009 14:48

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