CONNECTION SET-UP AND PATH ASSIGNMENT IN WAVELENGTH DIVISIONMULTIPLEXED RING NETWORKS

摘要

Techniques for physically implementing fiber ring networks which achieve full mesh connectivity, such networks including a 2-fiber WDM ring network composed of a clockwise ring, and a 4-fiber WDM Self-Healing Ring Network. The number of wavelengths required is derived for both odd and even number of nodes (901904) on the ring. To physically set-up all required connections in the network, optimal wavelength assignment algorithms are devised so that the wavelength assignment between nodes (901-904) on the ring is systematic and engenders full mesh connectivity while avoiding any possible violation of the color clash constraint. An illustrative algorithm uses a simple matrix approach for calculating the interconnection arrangement.