Design and Implementation of DWDM-FSO system for Tbps data rates with different atmospheric Attenuation

When it comes to fulfilling the expanding bandwidth demands in optical networks, dense wavelength division multiplexing (DWDM) has been proposed as a feasible solution. It has been used to increase the capacity of long-distance optical transport systems, such as free-space optics (FSO) and fiber optics, among other applications. When DWDM is employed over the FSO connection, a variety of impediments, such as clear air, haze, and rain atmospheric attenuations, have an impact on the system's overall performance. As a result, in this paper it has been proposed a system of DWDM-FSO for
$32\times 40$
Gbps and has a capability to reach 1.28 Tbps of data rate. The system uses frequency from 190 THz and spacing between channels of 200 GHz. The proposed system designed using Optisystem and investigated with distances (7,8,9, and 10) km to confirm the reliability and accurate results achieved based on the studied parameter of Quality Factor and Bit Error Rate (BER). The average QF obtained were in range of (11.58-17.93) dBm and (7.37-16.73) dBm for attenuation cases of (0.43) and (1.537) dB respectively.