According to a quick growth of the bandwidth capacity of WDM network, traffic damage due to a failure of network components is becoming unacceptable. To overawe this problem, a protection method that prepares backup light paths for each working path is now considered to improve reliability of networks. In this paper, it proposes an energy efficient routing in WDM passive optical networks. Routi...

As the Internet traffic volume increases, the IP over WDM network is expected to be the dominant architecture in future Internet backbone networks. For IP routers to transfer their traffic, the virtual topology should be constructed from lightpaths supplied by WDM networks. To reflect the demand-supply relation of IP and WDM layers, we present the total combined cost as the network design goal ...

WDM networks play a significant role in telecommunication systems to face the demand for wider bandwidths. Technological growth and the emergence of new advents in WDM technologies require wavelengthrouted channel, which will implement high bit rate applications in the network transport layer. Several researches were carried out and possible technologies were implemented to improve the performa...

A key feature of optical wavelength division multiplexed (WDM) networks is the inherently high degree of configurability available in the presence of tunable transceivers. More specifically, the flexibility of WDM networks lies in the ability to admit a large number of logical interconnections of nodes within the network. Indeed, this is a feature that distinguishes optical networks and drives ...

In this paper we deal with planning and optimization of survivable WDM networks. We investigate routing and planning of working and spare capacity for Wavelength Path and Virtual Wavelength Path networks. Models for recommendation of k diversified paths and diversified path restoration for WDM networks are presented. The results show the dependency of spare capacity cost from number of k recomm...

This disquisition presents a energy consumption in a network which is a important physical factor against this everlasting increase in network traffic. Since current equipment in network consumes energy inefficiently due to poor energy load proportionality we have modeled a packet optical transport networks. By employing integer linear programming (ILP), we model and optimize the energy consump...