Free space optics communication is a type of telecommunications and computer networking technology that utilizes light propagating in "free space." In this context, "free space" means air, outer space, a vacuum, or something similar. Solid optical fiber cable is one example of free-space optical communication. This kind of cable can be used to transmit data at extremely high speeds. To transmit data, the light must travel through an unobstructed path.
The basic principle behind Free-Space Optics (FSO) is that the data must be transmitted above the earth's atmosphere. The atmospheric conditions create the biggest challenge for FSO, but many drawbacks can be overcome by correct wireless network planning and redundancy systems. Nonetheless, it is still important to keep these in mind.
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