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 …

In this paper, we propose to lower the network design margins by improving the estimation
of the signal-to-noise ratio (SNR) given by a quality of transmission (QoT) estimator, for new …

For reliable and efficient network planning and operation, accurate estimation of Quality of
Transmission (QoT) before establishing or reconfiguring the connection is necessary. In …

Increased global traffic puts tough requirements not just on fiber communications links but
on the entire network. This manifests itself in multiple ways, including how to optimize …

To ensure uninterrupted communication in optical transport networks, the common practice
is to overprovision lightpaths in terms of capacity and physical layer performance. Over …

An optical network, like any system, has to be observable before it can become subject to
optimization, and this is the main capability that ORCHESTRA project introduces …

Network traffic is growing exponentially, which has increased the onus on network operators
to expand their network spectral resources beyond the C band. This work explores the effect …

In elastic optical networks, digital coherent transceivers modify their symbol rate, modulation
format, and forward error correction to best serve the network demands. In a nonlinear …

With the advent of novel elastic optical transponders allowing for fine rate granularity,
network designers can maximize the throughput of current installed and future wavelength …

The rapid growth in world-wide communications and the rapid adoption of the Internet has
significantly modified our way of life. The traffic behavior is changing rapidly and the …