Dynamic Routing and Wavelength Assignment(RWA)is a key issue to Intelligent Optical Networks(ION)
and heuristic algorithms represented by the Ant Colony Optimization(ACO)algorithm is one of the most preferred schemes for such issues.This paper proposes an Adaptive Ant Colony Optimization(ADACO)algorithm-based RWA mechanism
which realizes state adjustment for the global pheromone updating by adopting adaptive strategies.Theoretical analysis and numerical simulation results show that compared with Dijkstra+FF algorithm
the improved ADACO+FF algorithm effectively lowers the network blocking probability and the optimal blocking probability improvement in regular MESH and NSFNET topology scenario is up to 0.3and 0.2