A high-capacity DWDM/SCM architecture for broadband subscriber networks

We proposed a star-bus-ring architecture for DWDM/SCM networks with very high capacity, and excellent reliability. The SBRA is a nice combination of three popular network topologies being able to support tremendous broadband users. We design self-healing function to overcome fiber cuts in the star and ring subnets to ensure good survivability. We employ the CAT structure in the ring subnet to eliminate OBI problem and compensate branch loss. We further setup an experimental network to demonstrate the feasibility of SBRA. The results reveal that the proposed SBRA is a promising architecture for future high-capacity broadband subscriber networks.