Design of 10.24 Tb/s DWDM system using NRZ modulation format with narrow channel spacing

Abstract

In this paper, optical communication system at 10.24 Tb/s using NRZ modulation for 1024 channels with channel spacing of 0.2 nm has been simulated. The performance of the designed dense wavelength division multiplexing (DWDM) system has been executed for evaluation in terms of BER, Q-factor, and eye diagrams. It has been observed that signal received at highest distance without dispersion compensation in good quality is 90 km with an average BER of 10−9 in S, C, L, U-bands and up to 1728.3 nm wavelength; moreover Q-factor is above the threshold value for DWDM system to implement an optical communication link. The system with NRZ modulation format shows good performance up to 90 km in all spectral bands designated for optical fiber communication, but at the distance of 120 km communication link is possible in S, C, and L-bands and at 150 km up to 1565 nm, i.e., C-band only.