Global Free Space Optics (FSO) Communication Market By Type (Transmitters , Receivers , Modulators , Demodulators , and Encoders and Decoders), By Application (Storage Area Network , Data Transmission , Defense , Security , Airborne Applications , Healthcare , Disaster Recover , and Last Mile Access), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029