Grobe, Klaus (Systems Consulting, ADVA Optical Networking Ltd., Clifton Technology Center, Clifton Moor, York YO30 4GU, UK)
Hinderthür, Henning (Product Line Management, ADVA AG Optical Networking, Campus Martinsried, Fraunhoferstr. 9a, 82152 Martinsried/München)
Will, Dieter (VP Business Development, ADVA AG Optical Networking, Campus Martinsried, Fraunhoferstr. 9a, 82152 Martinsried/München)
DSL backhaul is an increasingly important access application for metro optical networking. It is driven by massive rollouts of triple-play and IPTV services. Critical challenges for optical networks in supporting DSL mass rollout are simplicity, cost, and scalability. We propose the concept of a Gigabit Ethernet or Multi-Service Add/Drop Multiplexer (GbE/MS- ADM) which is directly combined with CWDM access technology. We show that such a GbE/MS-ADM provides superior access flexibility, together with a net bandwidth gain for multicast services over static solutions, and also enhanced optical parameters which again make it more useful as compared to standard OADM technology. Since the GbE/MS-ADM is based on 4-Gb/s technology, it is also cost-optimized over 2G5 and 10G solutions, and also over Black Link alternatives.