Resilient optical network technologies for catastrophic disasters [invited]

A strategy to strengthen the resiliency of optical networks against catastrophic disasters such as megaquakes or tsunamis is introduced. Two important aspects are endurance against damage in broad-area networks and the quick recovery of optical networks in devastated areas. In order to realize endurance in broad-area networks, optical packet switching integrated with circuit switching is proposed to mitigate congestion. For quick recovery of optical networks in devastated areas, emergency optical networks and hierarchical addressing are introduced.