Flexgrid technology is now considered to be a promising solution for future high-speed
network design. In this context, we need a tutorial that covers the key aspects of elastic …

In recent years, OFDM has been the focus of extensive research efforts in optical
transmission and networking, initially as a means to overcome physical impairments in …

Empowered by the optical orthogonal frequency-division multiplexing (O-OFDM) technology,
flexible online service provisioning can be realized with dynamic routing, modulation, and …

Based on the concept of infrastructure as a service, optical network virtualization can
facilitate the sharing of physical infrastructure among different users and applications. In this …

Recently, optical orthogonal frequency-division multiplexing technology has attracted
intensive research interest because spectrum-sliced elastic optical networks (EONs) can be …

This paper investigates the spectrum fragmentation issue, which undermines the bandwidth
efficiency in elastic optical networks. After categorizing the two-dimensional fragmentation …

Emerging technologies such as spectrally efficient multicarrier higher order modulation and
bandwidth variable wavelength selective switches have led to a change in the optical …

As optical networks continue to evolve to support increasing bandwidth demands, lightpaths
will take on different spectrum spaces as opposed to the current uniform 50-GHz grid …

Elastic optical networks (EONs) enable network operators to have agile bandwidth
management in the optical layer. In this paper, we investigate dynamic and adaptive …

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 …