Free Space Optical Communication System Based on the Combination of WDM and Polarization Multiplexing

Free space optical communication system (FSO) is a data transmission technology that requires a straight line of sight between the transmitter and receiver for reliable transmission. FSO link h-as the advantage of high modulation bandwidth, high data transmission rate, low cost and simple installation process. In this paper, the combination of wavelength division multiplexing and polarization Multiplexed for space optical communication is studied to explore the performance of the system. The system performance is evaluated using various performance indices like eye diagram, Q factor and BER. with acceptable performance levels (when the laser power is 27dBm, Q~6dB and BER $\leq10^{-9}$).