DETRIMENTAL EFFECT OF WEATHER CONDITIONS ON FSO BASED SYSTEM - SURVEY

ABSTRACT Over the last two decades Free Space Optical (FSO) communication is preferred over the radio frequency communication and microwave systems because of its license-free long-range operations, small size, high bandwidth, low cost, no need of licenced frequency, absence of radiation hazardsand immunity to interference. Free Space Optical communication has few limitations also like beam dispersion, scintillation. A well-known limitation of FSO is the effects of weather conditions on it. As we know that the free space optics is highly affected by the various atmospheric conditions which degrade the performance of FSO link. This paper includes the effect of the fog, snow, rain and Scintillation over the FSO links. This paper tells us how we can improve the performance of FSO by eliminating the effects of atmospheric conditions on the signal.