Binary Error and a three-level division multiplexing Dispersion analysis of a rat optical fibre communication system

In this paper, we look at how well the Three Level Code Division Multiplexing (3LCDM) method works in high-speed optical fibre networking environments. Results reveal that the dispersion tolerance of a 50 Gb/s 3LCDM system is higher than that of a standard 50 Gb/s non return to zero (NRZ- OOK) system. The top level has a chromatic dispersion tolerance of 81 ps/nm at BER of 10- • 50 Gb/s, while the lower level has a tolerance of 98 ps/nm for both positive and negative chromatic dispersions. These numbers are more than the typical NRZ values for 40 Gb/s, which are about 49 ps/nm.