Placement of Wavelength Converters in Dynamically Routed All Optical Networks in presence of Tunable Transceivers

Abstract

Efficient routing with optimal resources is one of the challenging tasks in the design of DWDM networks. Wavelength Converter (WC) is an important resource, as the placement of WCs affects the network performance and the quantity of WCs affects the cost of the network. With the help of WCs the network performance can be maximized by removing the wavelength continuity constraint. As WCs are very expensive, selecting the candidate nodes for the placement of WCs in a network is important. In this paper we have proposed an optimized approach for the placement of WCs in the presence of tunable transceivers (TTRs) and fixed transceivers (FTRs). The performance analysis has been carried out for above approaches. Observation shows that sparse partial wavelength converters with various loads require only 2.4% converters. When tunable transceivers are used, an average reduction of 73% in blocking probability and average saving of 91% in required number of converters.

Wavelength Assignment Techniques with Converters for All Optical Networks (AONs)

“…Therefore, adding more restrooms to the network may not be advantageous if they are not located in the proper locations. The outcome also demonstrates that, despite the deployment of a greater number of converters, there is a little fluctuation in blocking caused by a lack of a wavelength or route to the destination or a rapid rise in network traffic [21]. 4 shows the overall blocking probability for a low load with 40 wavelengths as a function of the number of WCs.…”