New applications require conveying huge bitrate from a source node to multiple
destinations. As a result, point-to-multipoint (P2MP) connections need to be established on …

Flexi-grid technology has emerged as the evolution of fixed-grid DWDM core optical
networks, enabling more efficient utilization of spectral resources and leading to higher …

There is a growing awareness that the utilized bandwidth of deployed optical fiber is rapidly
approaching its maximum limit. Given the possibility for such capacity crunch, the research …

This paper studies the routing, modulation format, and spectrum allocation problem in elastic
fiber-optical networks for static traffic. Elastic networks, based on Nyquist wavelength …

Higher-order modulation formats and spectral super-channels are key to maximizing
spectral efficiency (SE) in next-generation optical transport networks, thereby …

In this paper, we study the joint resource allocation in flexible-grid networks based on a
nonlinear physical layer impairment model. An optimization problem is formulated to assign …

Rigid fixed-grid wavelength division multiplexing (WDM) optical networks can no longer
keep up with the emerging bandwidth-hungry and highly dynamic services in an efficient …

Network coding (NC) is a revolutionary technique that fundamentally changes the traditional
operations of networks to achieve better performance thanks to the excellent feature of in …

In elastic optical networks, bandwidth fragmentation refers to the existence of non-aligned
and non-contiguous available subcarrier slots in the set of all subcarrier slots. Since …

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