Next Generation Flexible and Cognitive Heterogeneous Optical Networks

Abstract

Abstract. Optical networking is the cornerstone of the Future Internet as it provides the physical infrastructure of the core backbone networks. Recent developments have enabled much better quality of service/experience for the end users, enabled through the much higher capacities that can be supported. Furthermore, optical networking developments facilitate the reduction of complexity of operations at the IP layer and therefore reduce the latency of the connections and the expenditures to deploy and operate the networks. New research directions in optical networking promise to further advance the capabilities of the Future Internet. In this book chapter, we highlight the latest activities of the optical networking community and in particular what has been the focus of EU funded research. The concepts of flexible and cognitive optical networks are introduced and their key expected benefits are highlighted. The overall framework envisioned for the future cognitive flexible optical networks are introduced and recent developments are presented.

Resource management and control in converged optical data center networks: Survey and enabling technologies

“…For example, the software-defined optical transponder can adaptively select the optimal modulation level in the elastic optical backbone [47,48]. But without self-learning, [49,[20][21].…”

“…One promising solution is the intelligent coexistence of heterogeneous optical transmission technologies and elements, during the phase of network deployment. So the ODCN should allow a diversity of new voices to bloom, such as elastic optical networking [7][8][9][10][11][12][13][14][15][16], OFDM (Orthogonal Frequency Division Multiplexing)-based CDC interconnection [17], and Cognitive Heterogeneous Reconfigurable Optical Networking (CHRON) [18][19][20][21][22][23][24], etc.…”

Cognitive Dynamic Optical Networks

“…An initial answer to some of these issues is provided by a set of cognitive architectures or frameworks proposed in the literature, such as the work by Thomas et al [1] and Kliazovich et al [3], targeted to generic cognitive networks, or the proposals by Zervas and Simeonidou [4], Wei et al [5], and the CHRON project approach (Cognitive Heterogeneous Reconfigurable Optical Network) [6,7], targeted at cognitive optical networks.…”

“…As an example, the CHRON project [6,7] has proposed a distributed and a centralized architecture for cognitive optical networks but has mainly focused on the latter one, shown in Fig. 1(a).…”

Experimental Demonstration of a Cognitive Optical Network for Reduction of Restoration Time

“…The CHRON project [3] has proposed a novel architecture for cognitive heterogeneous reconfigurable optical networks. The aim of the CHRON project is to develop and showcase network architecture and a control plane which efficiently use resources in a heterogeneous scenario while fulfilling QoS requirements of each type of services and applications supported by the network.…”