What Is Free Space Optics?
Free space optics (FSO) is a nascent technology currently considered a strong contender to solve the first mile access problem. The FSO system consists of a transmitter and a receiver separated in distance and by atmosphere (free space). Communication occurs over air, the medium of communication. A laser first tracks a receiver and then emits light. Data is modulated onto the light. The receiver gets the beam of light and detects the beam, and, hence, there is one-way communication. Note here that there is loss in the medium, and the transmission is exposed to natural impediments, such as rain and fog (or even humans and animals), blocking the laser beam. The other issue in FSO is to track the receiver. Sometimes the ...
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