Wavelength reuse in a colourless ONU with all-optical clock recovery for full-duplex dense WDM PONs

Alexandros Maziotis, Bernhard Schrenk, Paraskevas Bakopoulos, Maria Spyropoulou, Jose A. Lazaro, Josep Prat, Hercules Avramopoulos
2011 2011 13th International Conference on Transparent Optical Networks  
In this paper, an approach of a colorless ONU comprised by a Fabry-Pérot filter and a Semiconductor Optical Amplifier for all-optical clock recovery of the downstream signal, followed by a Mach-Zehnder modulator as the upstream modulator is experimentally demonstrated. The all-optical clock recovery performs data erasure allowing for efficient wavelength reuse of the downstream signal for upstream remodulation. Operation at a fullduplex 10Gb/s symmetrical data rate and 20 dB loss budget is
more » ... strated over fiber spans of 50 km with achieved power margin of ~8 dB.
doi:10.1109/icton.2011.5970981 fatcat:ijbkaebxkjdw3dea46234jm5py