The paper proposes a general approach to support the analysis and evaluation of dynamic routing and wavelength assignment strategies applicable in advanced optical networks. Some ILP based models are introduced to apply the proposed analysis support for the evaluation of Separate Wavelength Pool strategy. Results from a small network example are described and analyzed to validate the proposed I...

Imagine a world of people who are connected through networks either they are far or close to each other and they could communicate in just “planks time”(that is believed to be the possible shortest duration) by paying less and obtaining great speed to communicate, this is just what the researchers are trying to obtain these days. One of the major problems facing optical networks is Routing and ...

Given a network G and a demand D of communication requests on G, a routing for (G,D) is a set of directed paths of G, each from the source to the destination of one request of D. The ROUTING AND WAVELENGTH ASSIGNMENT PROBLEM seeks a routing R for (G,D) and an assignment of wavelengths to the directed paths in R such that the number of wavelengths used is minimized, subject to that any two direc...

This paper is a proposal of my Ph.D. thesis research on physically aware Routing and Wavelength Assignment (RWA). The paper includes a lengthy discussion of background information relevant to my topic. This paper also includes a presentation of the progress I have made in this area and my plans for future research.

In this paper, we present a novel heuristic for routing and wavelength assignment in Virtual-Wavelength-Path (VWP) routed WDM optical networks. We are the first to take up the approach of both minimizing the network cost as well as maximizing the resource utilization. Our algorithm not only minimizes the number of wavelengths required for supporting the given traffic demand on any given topolog...

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We consider the routing and wavelength assignment (RWA) in survivable WDM network. A path protection scheme assumed and two different wavelength assignment methods for protection paths are considered. Integer programming formulations of RWA under two wavelength assignment methods are proposed and we devised algorithms to solve them. Test results show that the difference of wavelength requiremen...

We present and evaluate a wavelength assignment and deflection routing scheme for contention resolution in burst switched photonic networks in this work. By combing deflection routing and Priority-based Wavelength Assignment (PWA) together and making them compatible with each other, we show the improved performance of deflection routing-compatible PWA through simulation results.

We investigate new routing and wavelength assignment algorithms considering as constraints physical impairments that arise in transparent networks. Accounting both linear and nonlinear impairments we propose a scheme that integrates the routing and wavelength assignment to achieve an optimal combination of physical and networking performance. Through simulations of a typical long haul network t...