This week the Australian National Broadband Network (nbn) said it has had some extraordinary success using fiber technologies from the Alcatel side of Nokia, getting a single fiber to carry 102 Gbps, using multiple different passive optical network (PON) based protocols. nbn said it has successfully tested Nokia’s universal NG-PON in a lab, using NG-PON2, XGS-PON and GPON delivery across the same fiber. This, it says, will provide a simple upgrade path from current fiber technology used in FTTP deployments, because it can be deployed as an overlay on existing fiber. TWDM-PON provides four or more wavelengths on a fiber, each capable of supporting asymmetrical or symmetrical bit rates of 2.5Gbps or 10Gbps for a total of 40Gbps. XGS-PON uses…