Wavelength Assignment in multi bre in WDM - networks
نویسنده
چکیده
With wavelength division multiplexing (WDM) several optical signals can be transferred in a single optical ber [6][7]. This technology allows more e cient use of the huge capacity of an optical ber but also poses new network design and management problems, especially when wavelength conversion is not possible in the nodes. In this paper we consider the routing and wavelength assignment problem in such networks. In a single bre case the the wavelength assignment is essentially a graph coloring problem once the routes are xed. With multiplebres the problem changes a little and can no longer be presented as graph node coloring. Chosen routing has great impact to the nal solution and an iterative algorithm for choosing the routes is brie y studied.
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