A New Approach for Minimizing the Routing and Wavelength Assignment Problem

The RWA problem is a crucial and complicated designing issue in optical networks which is known to be an NP-hard problem. In this paper, modeling for Routing and Wavelength Assignment (RWA) problem in DWDM optical networks is proposed. In this technique is introduced for solving RWA problem which is known to be an NP-hard problem. In this technique every food source contains one of the K possible paths between each node pair in optical network. The artificial bees modify the positions of food sources and evaluated by the fitness function. The simulation results shows different population sizes on speed convergency and link state variables after routing and wavelength assignment. It ink state variables after routing and wavelength assignment.