Efficient wavelength assignment algorithms for light paths in WDM optical networks with/without wavelength conversion

In order to reduce the overall wavelength number required in a wavelength d ivision multiplexing (WDM) network with static traffic loading, new heurist ic algorithms for wavelength assignment are proposed in this paper. A new p arameter called "one-wavelength-decrease cost" is defined and used to compa re the efficiency of these algorithms. Comparative simulation studies have been carried out for various network topologies to investigate the effectiv eness of the proposed algorithms.