Rigid fixed-grid wavelength division multiplexing (WDM) optical networks can no longer
keep up with the emerging bandwidth-hungry and highly dynamic services in an efficient …

A detailed survey of approaches reducing energy consumption of core networks is
presented in this paper. We consider a multilayer architecture, in which the optical layer can …

This paper addresses the minimum network cost problem for survivable virtual optical
network mapping in flexible bandwidth optical networks. For each virtual link, we provide …

To address the urgent need for high-capacity, scalable and energy-efficient data center
solutions, we propose a novel data center network architecture realized by combining …

When Is Operation Over <tex>$\mathrm{C}+\mathrm{L}$</tex> Bands More Economical than
Multifiber for Capacity Upgrade Page 1 When Is Operation Over C+L Bands More Economical …

The ever-increasing Internet traffic demand introduces new challenges for
telecommunications carriers. Telecom networks will have to be upgraded to cope with the …

Modular design has recently emerged as an efficient solution to build large data center (DC)
facilities. Modular DCs are based on stand-alone prefabricated modules (ie, PODs) that can …

In optical networking, virtual topologies have been introduced mainly to provide service
providers with logical connections equipped with a reserved amount of bandwidth, which …

Emerging trends in optical transport networks aiming to support increasing data rates are
reshaping the possibilities for network planning. The deployment of a flexible grid with …

It is widely acknowledged by operators and market analysts from all parts of the
telecommunications industry that bandwidth demand is increasing dramatically, year by …