Colourless ONU based on self seed signal RSOA in a WDM-PON

Currently there is an effort by system operators to deploy cost effective Passive Optical Networks (PON). In this way, next generation PON is the subject of studies by researchers and system designers. Among them, Wavelength Division Multiplexing on Passive Optical Network (WDM-PON) are of particular interest once they can provide larger bandwidths. This work presents a new kind of Optical Network Unit (ONU) that is colourless and employs a reflective semiconductor optical amplifier (RSOA) as optical source and uses a feedback process to use itself light and get the seed signal.