Maximizing profit in optical WDM networks

This chapter considers wavelength routed optical networks, which are fast becoming the choice for the backbone of wide-area networks. Such networks employ wavelength routing to establish all-optical data paths called lightpaths. The chapter studies the routing and wavelength assignment of lightpaths with the objective being to maximize the profit. The problem of maximizing profits is formulated as an Integer Programming problem. Heuristic algorithms are also developed to solve the problem assuming both an off-line and an on-line traffic model. Numerical results are presented, which indicate the efficiency of the algorithms.