A 80 km reach fully passive WDM-PON based on reflective ONUs

摘要

We propose a novel line coding combination (Inverse RZ\udcoding in downlink and RZ in uplink) that extends the reach of WDM\udPassive Optical Networks based on Reflective SOAs with no in-line ampli-\udfication. We achieved full downstream remodulation even when feeding the\udreflective SOA with power levels as low as −35 dBm, thus increasing the\udsystem power budget. We experimentally assessed this scheme for a fully\udpassive, full-duplex and symmetrical 1.25 Gb/s WDM-PON over a 80 km\udG.652 feeder.