Elastic optical networks (EON) have been proposed to meet the network capacity and
dynamicity challenges. Hardware and software resource optimization and re-configurability …

This article reports the work on next generation transponders for optical networks carried out
within the last few years. A general architecture supporting super-channels (ie, optical …

In this work we detail the strategies adopted in the European research project IDEALIST to
overcome the predicted data plane capacity crunch in optical networks. In order for core and …

Time–frequency packing (TFP) transmission provides the highest achievable spectral
efficiency with a constrained symbol alphabet and detector complexity. In this paper, the …

Next generation optical networks will require high levels of flexibility both at the data and
control planes, being able to fit rate, bandwidth, and optical reach requirements of different …

A multiflow transponder in flex-grid optical networks has recently been proposed as a
transponder solution to generate multiple optical flows (or subcarriers). Multiflow …

We consider realistic long-haul optical links, with linear and nonlinear impairments, and
investigate the application of time-frequency packing with low-order constellations as a …

We present the experimental implementation of an all-optical ROADM scheme for routing of
an individual subchannel within an all-optical OFDM superchannel. The different functions …

Introduced to improve the spectral efficiency, time-frequency packing technique allows the
exploitation of different code rates, leading to different levels of spectral utilization and all …

Abstract Systems and methods are disclosed that attempt to increase spectral efficiency by
using Faster-than-Nyquist (FTN) transmission. In one embodiment, a method at a transmitter …