Design of 3×60 Gbps DCDM based WDM system

In this paper, wavelength division multiplexed optical communication system is designed based on duty cycle division multiplexing. The design is proposed for 6-users, each one assigned a different RZ duty cycle and with a data rate of 10 Gbps. A hybrid DCDM/WDM system is thus designed by modulating each group of 6-users DCDM system with different wavelength in a single channel. Using this technique, 3×60 Gbps data rate is transmitted over 50 km SSMF and recovered by using 10 GHz clock thereby utilizing the channel capacity of WDM system. The design is simulated using Optisystem ver-5 and MATLAB.