Date of Publication :7th November 2016

Abstract: Free Space Optical (FSO)communication is being realized as an effective solution for future accessing networks, offering light passed through air. The performance of FSOsystemcan be primarily degraded byvarious atmospheric attenuations such as rain, fog, haze and snow. At present, hybridization of Dense Wavelength Division Multiplexing (DWDM) with Coarse Wavelength Division Multiplexing (CWDM) becomes necessary to scale the speed and high bandwidthof the services.In this paper, hybrid WDM system is proposed, designed and the network parameters such as BER,Q Factor and receiver sensitivity are analyzedwith respect tolinkdistanceforvariousweatherconditions.In order to enhance the link distance, the Erbium Doped Fiber Amplifier (EDFA) is inserted at the receiver end. For investigation, 4 CWDM and 8 DWDM channels are considered whose corresponding channel spacing is 20nm and 0.8nm, respectively. From the simulation, it is investigated that the average link distance of proposed hybrid WDM-FSO system with EDFA for DWDM and CWDM system at very clear condition are around973km and936.25km, respectively. The proposed hybrid WDM based FSO systemisdesigned to handle the quality of transmission for 12 users, each at a data rate of 2.5Gbps along an FSO link distance of about 960km.

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