IEEE Photonics Journal (Jan 2013)

Flexible and Concurrent All-Optical VPN in OFDMA PON

  • Xiaofeng Hu,
  • Pan Cao,
  • Liang Zhang,
  • Xinhong Jiang,
  • Zhiming Zhuang,
  • Yikai Su

DOI
https://doi.org/10.1109/JPHOT.2013.2292300
Journal volume & issue
Vol. 5, no. 6
pp. 7902707 – 7902707

Abstract

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We propose and experimentally demonstrate a new scheme to support an all-optical virtual private network (VPN) in orthogonal frequency-division multiple-access passive optical networks (OFDMA PONs). In our scheme, VPN communications among optical network units (ONUs) are concurrent, where each ONU can simultaneously transmit/receive different VPN traffic to/from other ONUs. Therefore, VPN communications between any two ONUs can be achieved at any time. The bit rates of VPN traffic can be also flexibly adjusted by using dynamic OFDM subcarrier-allocation technique. The proposed scheme is experimentally demonstrated with 5-Gb/s downlink, 2-Gb/s uplink, and 2-Gb/s VPN OFDM signals. Error-free performances are obtained for all these signals after 25-km standard single-mode fiber (SSMF) transmission.

Keywords