Resilient Optical Networks Design using Particle Swarm Optimization Algorithms

Dropping of Information Communication Technology (ICT) based applications and facilities due to cable cuts failures in optical backbones leads to loss of many resources and opportunities. Therefore, resilience is an important issue toward reliable next generation networks which is a complicated designing issue and known to be an NP-hard problem. This paper presents an intelligent particle swarm optimization (PSO) algorithm to design resilient Dense-Wavelength-Division-Multiplexing (DWDM) optical networks. The path protection architecture is employed for single link failure covering in working lightpaths and the First-Fit algorithm is used for wavelength assignment to working and spare paths. The simulation results achieved from Italian network test bench for a given demand matrix demonstrate the efficiency of proposed approach for establishing two failure-disjoint paths in resilient optical networks design. The proposed approach could be extended for other resilience architectures.