The emerging software defined networking (SDN) paradigm separates the data plane from
the control plane and centralizes network control in an SDN controller. Applications interact …

Bandwidth fragmentation, a serious issue in elastic optical networks (EONs), can be
suppressed by proper management in order to enhance the accommodated traffic demands …

We study how to allocate spectrum and IT resources jointly for realizing efficient virtual
network function (VNF) service chaining in inter-datacenter elastic optical networks. We first …

It is known that by incorporating network function virtualization (NFV) in inter-datacenter
(inter-DC) networks, service providers can use their network resources more efficiently and …

The rapid growth in communications and internet has changed our way of life, and our
requirement for communication bandwidth. Optical networks can enable us to meet the …

Flexible-grid elastic optical networks (EONs) have attracted intensive research interests for
the agile spectrum management in the optical layer. Meanwhile, due to the relatively small …

It is known that multicast provisioning is important for supporting cloud-based applications,
and as the traffics from these applications are increasing quickly, we may rely on optical …

Optimization of end-to-end service provisioning across multi-domain EONs is critically
important due to the restricted intra-domain visibility and the agile spectrum allocation …

Acting as a promising technology to bring revolutionary changes to how the networks are
architected, network function virtualization (NFV) leverages IT virtualization technologies to …

This paper reviews the status of research into elastic optical networks and flexgrid,
illustrating the benefits of new flexible technologies to allow higher network capacities and …