Performance Evaluation of EPON Link at 1550 and 1350 nm using NRZ and RZ Modulation Technique

The research work has evaluated the performance of the proposed link in terms of QFactor and BER at wavelength of 1550 nm and 1350 nm at transmission distance of 30 km. The comparison has also been drawn among the proposed EPON link with NRZ and RZ modulation scheme. In this work, simulative investigation to evaluate the performance of EPON transmission links using NRZ and RZ modulation schemes at high transmission rate is reported. Further, the results have been reported by compensating the degradations introduced by fiber dispersion using DC fiber for the proposed EPON transmission links and a comparison is presented for evaluating the performance of such systems with NRZ and RZ modulation technique. Our result shows that the NRZ performs better than RZ modulation scheme as the later severely suffered with fading problems due to fiber dispersion. In case of NRZ modulation technique, an improvement in BER ratio and total power received is achieved in comparison to RZ modulation technique. Keyword: EPON, NRZ, RZ, BER