Title :
Physical-Layer Network Coding for VPN in TDM-PON
Author :
Wang, Qike ; Tse, Kam-Hon ; Chen, Lian-Kuan ; Liew, Soung-Chang
Author_Institution :
Dept. of Inf. Eng., Univ. of Hong Kong, Hong Kong, China
Abstract :
We experimentally demonstrate a novel optical physical-layer network coding scheme over a time-division multiplexing passive optical network. Full-duplex error-free communications between optical network units (ONUs) at 2.5 Gb/s are shown for all-optical virtual private network (VPN) applications. Compared to the conventional half-duplex communications setup, our scheme can increase the capacity by 100% with a power penalty smaller than 3 dB. Synchronization of ONUs is not required for the proposed VPN scheme.
Keywords :
network coding; passive optical networks; synchronisation; time division multiplexing; virtual private networks; ONU synchronization; TDM-PON; VPN; all-optical virtual private network applica- tions; bit rate 2.5 Gbit/s; full-duplex error-free communication; optical network units; optical physical-layer network coding scheme; power penalty; time-division multiplexing passive optical network; Optical attenuators; Optical buffering; Optical fibers; Optical network units; Passive optical networks; Virtual private networks; Passive optical network (PON); physical-layer network coding (PNC); time-division multiplexing (TDM); virtual private network (VPN);
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2012.2224103
