Demonstration of a Remotely Dual-Pumped Long-Reach PON for Flexible Deployment

SDN Enabled Dynamically Reconfigurable High Capacity Optical Access Architecture for Converged Services

“…Fast PON protection enabled by SDN control also allows the implementation of protection load balancing schemes, which allow substantial cost reduction in both IP and PON backup resources [5], by increasing the ability to share protection equipment across the network. This paper, based on the work presented in [6], substantially extends previous demonstrations of evolutionary access networks [4,[7][8][9]. For example the work presented in [4] focuses only on the SDN control plane aspects of a TDM-DWDM LR-PON and does not include integration with a realistic physical layer, while the demonstrations in [8][9] focus only on the physical layer and on statically allocated DWDM channels.…”

“…This paper, based on the work presented in [6], substantially extends previous demonstrations of evolutionary access networks [4,[7][8][9]. For example the work presented in [4] focuses only on the SDN control plane aspects of a TDM-DWDM LR-PON and does not include integration with a realistic physical layer, while the demonstrations in [8][9] focus only on the physical layer and on statically allocated DWDM channels. A very advanced demonstration of a time and wavelength division multiplexing (TWDM)-PON is reported in [7], which supports up to 1024 users over 40km reach, using 4+4 dynamically tunable channels in the up-and down-stream direction and also integrates protocol functionalities.…”

Integration of Quantum Key Distribution in Metropolitan Area Networks

“…In this way the traffic arising locally at the slave central office (CO) can be effectively backhauled to a centralized master-CO. Although recent schemes that address metro-convergence propose to avoid optic/electric/optic conversion in order to achieve active site consolidation by means of remote amplification and colourless optical network terminals (ONT) at the user premises [4], the chosen case is closer to brown-field architectures deployed nowadays. Passive splitters between the feeder and the drop segment of the access network, which are laid out as either power-splitting or wavelength multiplexing device according to the respective PON architecture, connect the classic+QKD customer premises equipment (CPE) of multiple users to the respective OLT.…”

Quaternary TDM-PAM as upgrade path of access PON beyond 10Gb/s

“…In contrast to wavelength division multiplexing (WDM), TDM has therefore reached a high market penetration through the Ethernet-and Gigabit Passive Optical Network (E/GPON) standards and is currently deployed as 10 Gb/s solution through 10G-EPON and XGPON [1]. On top of this, TDM is also considered for NG-PON2 and has widely influenced recent research work, especially in reach-extended hybrid WDM/TDM PONs [2].…”