Investigation of WDM-MIMO Channel with DLF in Free Space Optical Communication

Free Space Optics (FSO) is a favourable channel used in optical communication system. WDM in Free Space Optical communication (FSOC) is implemented to overcome the signal degradation or loss of signal due to atmospheric turbulence like rain, fog, haze etc. Therefore, the capacity of the channel can be improved by WDM more efficiently. The WDM based FSOC system using Hybrid Optical Amplifier provides a solution to signal degradation in various atmospheric conditions. Multiple Input Multiple Output (MIMO) is used to mitigate the effect of turbulence for long distance communication with increased reliability. This paper mainly focuses to investigate the maximum link length in WDM-MIMO system with Delay Line Filter (DLF) using Optisystem simulation software and the link parameters such as Eye Pattern, Minimum BER and Maximum Q-factor are analysed.