Analysis of free space optical link in ahmedabad weather conditions

Free space optical communication (FSO) has very large information handling capacity. FSO is capable of full duplex transmission of data, voice and video in many applications. This free space technique requires only a clear line-of-sight(LOS) path between the transmitter and the distant receiver. Performance of a FSO link and visibility range are adversely affected by weather conditions like fog, rain, clouds snowfall etc and atmospheric turbulence like scintillation. The important criteria before establishment of free space optical link are local weather. For example, Different FSO link(in terms of wavelength, mean optical power, distance etc) should be designed for the area where there is a large possibility of heavy fog or snow fall compared to the area with rare possibility of that. Before establishing a link, the meteorological condition of the given geographical area should be studied so that better availability can be achieved. In the present paper, the performance of FSO link in the city of Ahmedabad is presented.