Optical Network Modeling and Performance Using Random Graph Theory

The design of optical networks is still very challenging due to the stringent network requirements in terms of buffering, wavelength conversion, wavelength re-usability, etc. As the links in optical networks are static but traffic movements on these links are dynamic, therefore the traffic arriving on a node varies, thus leads to different buffering conditions. The graph theory can be utilized to view the performance of the optical networks, by approximating the number of inputs/outputs links, and the number of cascaded switches between sources to destinations pair. In this paper, using the graph theory model various network parameters are evaluated, and the packet loss performance of the optical node is evaluated.