This paper describes and evaluates distributed wavelength reservation protocols for all{optical WDM networks. These protocols are essential for applying WDM techniques to large scale all{optical networks. The protocols ensure that the wavelengths on the links along a path are reserved before communication takes place. A message is transmitted using the reserved wavelengths and remains in the op...

Multicast communication involves transmitting information from a single source node to multiple destination nodes, and is becoming an important requirement in high-performance networks. In this paper, we study multicast communication in a class of optical WDM networks with regular topologies such as linear arrays, rings, meshes, tori and hypercubes. For each type of network, we derive the neces...

This paper considers the scheduling problem of packet transmissions in a TDM/WDM unidirectional optical ring network. Our objective is to design a scheduling scheme for packet transmission with minimum scheduling length satisfying a set of traffic requirements. We focus on a fairly general case in that non-uniform traffic demands and arbitrary transmitter tuning latencies are allowed. Since the...

The optical networks are fast and error free but due to some nonlinearity effects, its performance degrades. The performance of wavelength division multiplexing (WDM) in radio over fiber (RoF) systems is found to be strongly influenced by nonlinearity characteristics inside the fiber. In this paper, we have studied the effect of four wave mixing (FWM) as one of the influential factors in the WD...

This article compares the performance of WDM lightpath protection and IP LSP protection schemes for IP-over-WDM networks. A mathematical formulation of the maximum throughput problem is presented and analytical expressions for recovery time are derived for both schemes. The throughputs and recovery times are analyzed and compared. Results show that the IP LSP protection scheme presents higher t...

MPLS (Multi-Protocol Label Switching) over WDM (Wavelength Division Multiplexing) networks are gaining significant attention due to the efficiency in resource utilization that can be achieved by jointly considering the two network layers. This paper addresses the design of MPLS over WDM networks, where some of the WDM nodes may not have packet switching capabilities. Given the WDM network topol...

Dynamic Bandwidth Allocation is a major open research challenge in the migration of Passive Optical Network (PON) systems towards Long Reach PON, especially when hybrid WDM/TDM is used (LR WDM/TDM PON). New and efficient solutions for Dynamic Bandwidth and Wavelength Assignment are sought to address two main critical issues of such PON systems: how to schedule the transmissions over multiple wa...

Recent developments of coarse WDM optoelectronic components will allow for the fabrication of low cost, high-speed reconfigurable interconnection networks within large distributed sharedmemory (DSM) multiprocessor machines, by using the wavelength tunability in combination with a broadcast-and-select mechanism. We discuss in this work the advantages and the limitations they impose on network pe...

We consider the problem of designing logical topologies for IP over WDM networks. One important feature of WDM networks is the reconfigurability when traffic demands change over time. However, if the network resource is not used efficiently, the reconfiguration can cause network disruption because new wavelength channels can be added only after deleting some working channels. Therefore, saving ...

The recently approved IEEE 802.17 Resilient Packet Ring (RPR) network deteriorates under multicast traffic to legacy ring technologies that do not support spatial reuse. We extend our multicast approach with spatial reuse from a currently single-channel RPR to WDM-upgraded multichannel RPR networks, where each node can transmit packets on all wavelengths and receive on one wavelength, and analy...