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Advances in fiber research have increased its performance and made it stand out from copper cables. These performances now make fiber the leading medium in terms of capacity and also in terms of range if we were limited to terrestrial transmission.
In addition to their high bandwidth, optical free space communications (FSO) have many other advantages over radio frequencies (RF).
Some of these benefits are: they are license-free spectrum communications, quick and easy to deploy, safer and less demanding in terms of power consumption, mass requirements and electromagnetic interference isolation. For these reasons, FSO has been implemented in many applications such as: radio astronomy, remote sensing, last mile access, back-haul for cellular networks, and many others.
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IEEE/ICACT20210117 Slide.04
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