Mohammad Hashem Vadjed Sam - School of Electrical engineering Iran University of Science and Technology Tehran ۱۶۸۴۶ , Iran
Somayyeh Masoomi - School of Electrical engineering Iran University of Science and Technology Tehran ۱۶۸۴۶ , Iran

An improvement in an ant based algorithm for dynamic routing in all-optical wavelength-division- multiplexing (WDM) networks is proposed. The improvement is based on a new weighting function, considering simultaneously both blocking probability and load balance. Simulations are run for NSFNET physical topology The results obtained indicate a good compromise between load balance and blocking probability in comparison with the results based on the well known HABR algorithm.

routing algorithm, metaheuristic algorithm, ant colony optimization, first fit wavelength assignment algorithm