Title :
Rayleigh Scattering Tolerant PON Assisted by Four-Wave Mixing in SOA-based ONUs
Author :
Schrenk, Bernhard ; De Valicourt, Guilhem ; Lazaro, Jose A. ; Brenot, Romain ; Prat, Josep
Author_Institution :
Dept. of Signal Theor. & Commun., Polytech. Univ. of Catalonia, Barcelona, Spain
Abstract :
A scheme for the mitigation of Rayleigh backscattering (RB) in hybrid passive optical networks (PON) is presented. Semiconductor optical amplifiers (SOA) of the optical network units (ONU) are advantageously used as nonlinear elements, exploiting Four-Wave Mixing (FWM) between the downstream signals to create a spectrally displaced optical upstream carrier. The proposed technique is experimentally proven in a long reach and high split PON, and the suppression of the pumps and further FWM products, obtained via a modified filtering scheme inside the PON, is analyzed. Full-duplex transmission at 10/2.5 Gb/s is demonstrated, showing that upstream transmission is possible despite low optical signal-to-RB ratios (OSRR) of ~ 12 dB.
Keywords :
Rayleigh scattering; light transmission; multiwave mixing; optical fibre filters; optical fibre subscriber loops; optical transmitters; passive networks; semiconductor optical amplifiers; Rayleigh scattering tolerant PON; SOA-based optical network units; bit rate 10 Gbit/s to 2.5 Gbit/s; four-wave mixing; full-duplex transmission; hybrid passive optical networks; modified filtering scheme; nonlinear elements; optical signal-to-RB ratios; optical upstream carrier; semiconductor optical amplifiers; Band pass filters; Optical fiber amplifiers; Optical filters; Optical network units; Passive optical networks; Semiconductor optical amplifiers; Fiber-to-the-home; four-wave mixing; optical access; optical fiber communication; passive optical networks; semiconductor optical amplifier;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2010.2089040
