Cost effective and resilient optical network that offers seamless network expansion via subsystem modular OXCs and inter-node interconnection optimization

An optical network that is cost-effective, resilient, and capable of disruption-free expansion is developed. It consists of subsystem modular OXCs and inter-node interconnection optimization. Significant hardware scale reduction and seamless capacity expansion are shown to be achieved. With the optimization technique introduced in this paper, the fiber number increment imposed by the reduced routing capability stemming from subsystem decomposition and resiliency with dedicated path protection is successfully kept to a minimum.