The document discusses free space optic (FSO) communication systems. It introduces FSO concepts and components, including transmitters, receivers and the link equation. It describes how FSO can help solve the "last mile" connectivity problem and provides high bandwidth at a lower cost than other solutions. The document also covers signal propagation challenges, data security, system configurations, advantages of FSO and major players in the FSO industry.
12. A high-bandwidth cost-effective solution to the last mile problem is to use free-space laser communication (also known as or optical wireless) in a mesh architecture to get the high bandwidth quickly to the customers.
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14. Preventing Interception of the Signal Directional transmission: Narrow divergence of the FSO transmit path (shown in red) as compared to a typical Radio Frequency (RF) path (shown in blue). The tightly collimated FSO beam ensures that the signal energy is focused on the receiving unit, making interception of the beam extremely difficult.
15. Another view of the narrow beam divergence inherent in FSO transmission. (For clarity only one transit beam is shown.)
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