In scheduling the transmission of messages in a WDM network, we are facing not only the channel assignment problem but also message sequencing problem In this paper, we propose and evaluate a new reservationbased message scheduling algorithm for single-hop, WDM passive star lightwave network which addresses both the assignment aspect and the sequencing aspect of the problem. We compare the perf...

Dynamic routing in WDM (Wavelength Division Multiplexing) networks is achieving increasing interest due to the expected traffic growth for future optical networks. This contribution concentrates on network performance issues occurring for network operation under dynamic traffic load. In this context, routing strategies play a central role. We show that a new strategy achieves very good performa...

This paper surveys theoretical results for wavelength{routing in all{ optical networks and presents several open problems. We focus our attention on graph-theoretical problems and proof techniques. 1 INTRODUCTION Optical networks are emerging as key technology in communication networks and are expected to dominate many applications, such as video conferencing, scientiic visualisation, real-time...

A 640-Gb/s high-speed ATM switching system that is based on the technologies of advanced MCM-C, 0.25m CMOS, and optical wavelength-division-multiplexing (WDM) interconnection is fabricated for future broadband services. A 40-layer, 160 114 mm ceramic MCM forms the basic ATM switch module with 80-Gb/s throughput. It consists of an 8 advanced 0.25m CMOS LSIs and 32 I/O bipolar LSIs. The MCM has a...

Many researches have been investigated on planning or designing WDM networks assuming that the future traffic is known beforehand. Practically, it is difficult to predict the future traffic demand accurately since there are various types of data traffic with different traffic characteristics. In this thesis, we propose a scheme to design a WDM network that will accommodate as much traffic as po...

Increasing bandwidth demands, caused by growing numbers of users, increasing popularity of the Internet, multi-media services, and higher demands on quality, urge the development of ever faster networks. To meet these demands, optical techniques are being introduced in public networks but on a link-to-link basis. This paper addresses future networks that will be to a large extent alloptical. A ...

Due to the fast increase of Internet traffic and the enormous bandwidth potential of alloptical transport networks based on Wavelength Division Multiplexing, an IP-over-WDM network scenario is likely to be widespread in future communication networks. At the same time, IP networks are becoming more and more mission-critical. Hence, it is of paramount importance for IP-over-WDM networks to be abl...

A WDM mesh network is planned and designed so that to satisfy all its demands. Each connection has to be protected with the a) dedicated way, b) shared way and c) the benefits of the shared way versus the dedicated way are also showed. The shortest path algorithm is used for all dynamical cases. The network uses wavelength conversion. Keywords-dedicated protection, optical channel layer, shared...

We consider an optical technique for performing tunable weighted addition using wavelength-division multiplexed (WDM) inputs, the enabling function of a recently proposed photonic spike processing architecture [J. Lightwave Technol., 32 (2014)]. WDM weighted addition provides important advantages to performance, integrability, and networking capability that were not possible in any past approac...

The Routing and Wavelength Assignment (RWA) problem is known to be NP-hard for general Physical Topology (PT) in optical networks. We have analyzed the survivability of the optical network under Survivable Routing and Shared Path Protection (SPP) for various topologies and suggested two survivable RWA algorithms which are shown to perform better under certain performance matrix by simulation. G...