Optical networks and the related technologies, network management software and services
have undergone remarkable developments, and such networks are now the ultra-high …

Traffic grooming is a central problem in optical networks. It refers to packing low rate signals
into higher speed streams, in order to improve bandwidth utilization and reduce network …

Traffic grooming is a central problem in optical networks. It refers to pack low rate signals
into higher speed streams, in order to improve bandwidth utilization and reduce network …

In an optical network using the wavelength division multiplexing (WDM) technology, routing
a request consists of assigning it a route in the physical network and a wavelength. If each …

Optical transport networks (OTN) should be prepared to jointly handle both multicast and
unicast traffic. Both opaque and transparent architectures are available to handle these …

We study the minimization of ADMs (Add‐Drop Multiplexers) in optical WDM bidirectional
rings considering symmetric shortest path routing and all‐to‐all unitary requests. We …

Résumé Le groupage est un problème central dans l'étude des réseaux optiques. Dans cet
article, on propose le premier résultat d'inapproximabilité pour le problème du groupage, en …

Optical wavelength division multiplexing (WDM) is today the most promising technology to
accom-20 modate the explosive growth of Internet and telecommunication traffic in wide …

The Internet traffic is constantly growth and the applications of type unicast/multicast with
different Quality of Service (QoS) requirements. The increase of internet traffic over the last …

Optical wavelength division multiplexing (WDM) is today the most promising technology to
accom-21 modate the explosive growth of Internet and telecommunication traffic in wide …