Static Routing Considering Network-layer and Physical-layer in Wavelength-Routed Optical Networks

Routing and wavelength assignment, known as RWA problem, is an important issue for cost effective utilization of network resources, in wavelength-routed optical networks. Solving the RWA problem considering all constraints of network and physical-layers, simultaneously, is a big challenge. To this time only some of these constraints have been taken into account. Herein, a new static routing approach is developed considering both the network-layer and the physical-layer constraints. The proposed approach consists of a comprehensive cost model and an efficient routing algorithm. Routing algorithm performance is measured in terms of resource utilization, and convergence rate under different conditions.