Increasing incidents of cyber attacks and evolution of quantum computing poses challenges
to secure existing information and communication technologies infrastructure. In recent …

Emerging services and applications demanding high bitrate and stringent quality of service
requirements are pushing telecom operators to upgrade their core networks based on …

The recently created ITU-T Focus Group Network 2030 is leading network operators to
identify the requirements and use cases that networks are expected to fulfill for the short …

Traffic in optical backbone networks is evolving rapidly in terms of type, volume, and
dynamicity following the rapid growth of cloud-based services, ongoing adoption of 5G …

Compared to wavelength switched optical networks (WSON), flexgrid optical networks
provide higher spectrum efficiency and flexibility. To properly analyze, design, plan, and …

In this invited contribution, we discuss technology options for bandwidth-variable
transceivers which are key components for the realization of flexible software-defined optical …

This paper describes the problematic filter narrowing effect in the context of next-generation
elastic optical networks. First, three possible scenarios are introduced: the transition from an …

We present an optimization procedure that mixes advanced large-scale optimization
methods and heuristics to solve large instances (with over 1.7 million integer variables) of …

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 …

Optical WDM backbone networks based on fixed spectrum grid have limitations such as low
spectrum utilization and rigidity in provisioning for heterogeneous rates. Flexible-grid …