Optimal design of wavelength-routed multi-fiber ring networks

Based on the wavelength-routed ring network model, new integer linear programming (ILP) formulations were proposed to tackle the optimal design of wavelength-routed multi-fiber ring (MFR) networks. The optimal objective is to minimize the averaged node ports number. It can maximize the cost effectiveness of the designed MFR networks. By using these algorithms, the difference of network performance between unidirectional and bidirectional multi-fiber ring was analyzed quantitatively with the different traffic pattern (single hub and double hub) and routing schemes (wavelength path and virtual wavelength path). The obtained results are very useful for the optimal design of multi-fiber ring networks.