Louis Anthony Cox, Jr., Manuel Laguna, Belén Melián, José A. Moreno-Pérez, and Jennifer Sanchez
Proceedings of the 9th International Conference on Telecommunication Systems, Modeling and Analysis, pp. 98-107, March 2001
Cost reduction remains a key concern in optical network designs. Multiwavelength optical networks are new technology that achieves cost reduction when compared to traditional equipment, such as SONET, and the use of new fiber. In this paper we discuss the development of a new heuristic procedure for optimizing the location of optimal cross-connects (OXCs) and wave division multiplexing (WDM) or dense (DWDM) facilities in fiber networks. The approach builds a list of routes for each demand making use of an efficient implementation of the k-shortest path algorithm. The paths for each demand are found calculating the incremental cost of routing the demand in a “base” network. Initially, the base network is the original SONET design and new equipment is incrementally added to evolve the base network as the process iterates. Demands are assigned to paths in order to construct a solution and calculate the associated cost. We use an example to illustrate the proposed procedure.
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