Abstract: In this paper we study about the dispersion effect in optical fiber and also effect of the dispersion for 4-QAM CO-OFDM and CO-OFDM WDM system at 10Gbps data rate. Then we investigate the performance for single OFDM and four channel CO-OFDM WDM system with 50 GHz spacing. For this analysis we use opt wave simulation software Optisystem V.14. And then compare effect of dispersion for single OFDM and CO-OFDM system.
Keywords: OFDM, QAM, WDM, Optical Communication