Analysis of Dynamic Traffic Patterns on WDM Optical Networks for Different Topologies Using RWA Algorithm

Abstract: In this technologically advanced world where capabilities of the communicating devices and transmission media is increasing. Fiber optic cable has played an important role. Itutilizesthis, high capability media of transmission by performing multiplexing. Wavelength Division Multiplexing (WDM) is one such technology used in optical networks. Every single link in optical network has the capability to transmit gigabytes of data. Using WDM, data of multiple users is sent simultaneously through the same link by assigning distinct wavelengths. Such algorithm is referred as Routing and Wavelength Assignment Algorithm (RWA). In this paper, all the optical network topologies are simulated using MATPLAN WDM tool based on MATPLAN. All such topologies are analyzed for different dynamic traffic loads. Comparison between all the topologies is performed on the basis of some governing parameters like message propagation delay, channel utilization, traffic handling capacity and others. It is found that mesh topology is better for high traffic but it is costly due to large number of links. So ring topology is found better in all aspects.

Keywords: Wavelength Division Multiplexing (WDM), Routing and Wavelength Assignment Algorithm (RWA), MATPLAN.