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International Journal of Optics
Volume 2015 (2015), Article ID 945483, 7 pages
http://dx.doi.org/10.1155/2015/945483
Review Article

Free Space Optics: Current Applications and Future Challenges

University Institute of Engineering & Technology, Panjab University, Chandigarh, India

Received 9 July 2015; Accepted 29 September 2015

Academic Editor: José Luís Santos

Copyright © 2015 Aditi Malik and Preeti Singh. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

FSO is a communication system where free space acts as medium between transceivers and they should be in LOS for successful transmission of optical signal. Medium can be air, outer space, or vacuum. This system can be used for communication purpose in hours and in lesser economy. There are many advantages of FSO like high bandwidth and no spectrum license. The transmission in FSO is dependent on the medium because the presence of foreign elements like rain, fog, and haze, physical obstruction, scattering, and atmospheric turbulence are some of these factors. Different studies on weather conditions and techniques employed to mitigate their effect are discussed in this paper.