Performance Enhancement of Ultra High Capacity 2.5 Tbps DWDM System Using DCF and Optimized Modulation Format.

This paper successfully demonstrate point-topoint (P2P) 2.5 TB/s DWDM system in downstream for 100 wavelengths having 0.4nm (50GHz) channel spacing by using post-dispersion compensation scheme. Each channel is transmitting 25GB/s data rate in down link. A 20km dispersion compensating fiber (DCF) followed by 80km standard single mode fiber (SSMF) which passes 20 times through fiber span for compensating the chromatic dispersion. The maximum reach of designed system is (100 × 20) 2,000km. In this paper we also performed the comparison of different modulation formats such as NRZ, RZ and CRZ. It has been observed that CRZ modulation format can achieve BER as better as e-9 for each channel, which gives best performance. The performance of designed system is compared in terms of Q-factor, eye diagrams and BER. [ABSTRACT FROM AUTHOR]