Analysis and Design of Optical Communication Channels between Earth and Satellites

Due to the development of technology, the need for long-distance communication is increasing rapidly day by day. Communication across long distances by integrating wired and wireless communications is becoming widespread. In this study, communication between the earth and satellites and communication between satellites in different orbits were analyzed. In the setups modeled with the OptiSystem 7.0 simulation program, a free space optical (FSO) communication structure was designed for the communication systems in question, where CSRZ (Carrier Suppressed Return to Zero) and NRZ (Non-Return to Zero) advanced modulation formats were used. In two bidirectional inter-satellite communication lines between the earth, LEO (Low Earth Orbit) and GEO (Geostationary Earth Orbit), WSS (Wavelength Selecter Switch) and add-drop structure were used.