Performance of all-optical networks with limited-range wavelength conversion

Previous works have shown that wavelength conversion can considerably improve the performance in all-optical networks. However, it is an unrealistic assumption under the current technology and wavelength conversion with a limited range, not a full range, is more promising. In this paper, we propose a new analytic approach for such networks by virtue of the layered-graph where each wavelength is virtually assigned a separate link. Our analytic approach can allow a flexible routing method. For example, wavelength assignment and routing selection can be considered at the same time, which has never been treated in the past literature