Sharing spectrum and straddling p-cycle FIPP for protection against two simultaneous failures in SDM elastic optical networks

The introduction of Space division multiplexing (SDM) in optical networks brings new challenges for protection of networks since a lightpath can span multiple cores. In this paper, we investigate the problem of dynamic protection against two simultaneous failures in spacial division multiplexing elastic optical networks. For that, we propose a new path-protection sharing spectrum and straddling p-cycle FIPP algorithm called Sharing Slot and Straddling p-Cycle FIPP (SSSPF). In SSSPF, each connection is assigned one primary path and one link-disjoint backup path. SSSPF is the first algorithm in literature, to provide protection against two simultaneous failure in SDM elastic optical network.