Utilization of 10 Gbps DWDM System with Duobinary Modulation into Passive Optical Network

Passive optical networks are considered to be the most promising solution for future access networks. Growing demand for capability and high bit rate transmission has become an important part of metropolitan optical communication networks in recent years. Currently deployed 1 Gbps passive optical networks do not seem to be suitable for future demands. This paper deals with the utilization of 10 Gbps DWDM (Dense Wavelength Division Multiplex) in PON (Passive Optical Network) using simulation tool OptSim. Our goal was to create passive optical network based on the real passive optical distribution path using OTDR and to show the possibility of utilization of DWDM in such network. We also describe optical duobinary modulation as a future candidate for such network and its advantages over commonly used intensity modulation. Performance of DWDM-PON with optical duobinary modulation and intensity modulation with direct detection is analyzed using BER (Bit Error Rate) and Q factor measurements.