Neha Rani
As free space optics (FSO) is unguided transmission media which is also named as optical wireless communication (OWC) and FSO links are operating near Infrared (IR) bands. And are widely used media to transmit information or signal as it provided wide range of bandwidth with effective modulation schemes. Free space optics works on line-of-sight (LOS) which leads to some major issues for transmitting signal at long range of distance due to weather changes, atmospheric disturbances, multi-storey buildings, etc. Over long ranges, received signal quality degraded due to random fluctuation during transmission. FSO provide high speed data rate transmission between transmitter and receiver over several kilometres of distance. Along with these applications it also provides different quantum key distribution protocols to provide secure transmission over the space.
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