Equivalent algorithm for dynamic routing in multi-wavelength optical network

In the paper, an equivalent algorithm for dynamic routing and wavelength assignment inmulti-wavelength optical network is proposed, for which a technique with wavelength graph and addingvirtual source node and destine node is adopted.By doing so, multi-wavelength network is transformedto equivalent single-wavelength network and two complicated problems of routing and wavelengthassignment are solved, and program design of the algorithm is simplified.By using a shortest pathalgorithm to solve the problem of routing and wavelength assignment,optimal solution can be derivedand the blocking probability of networks is efficiently decreased.Simulation results show that comparedwith FAR-2D algorithm, this equivalent algorithm can reduce the blocking probability by 0.02, 0.025respectively in 4- wavelength networks and in 8-wavelength networks