Review of Translucent Elastic Optical Networks Under Dynamic Traffic: Enabling Devices, Design Strategies and Operational Strategies

Regenerators are used in elastic optical networks (EON) to restore the optical signal, as well as, to perform spectrum and modulation format conversions. The EONs that have some regenerators devices in their nodes are also known as translucent networks. Several aspects should be considered during the design of translucent EONs: the type of regenerator employed, the node architecture, the strategies to install and use the regenerators in the nodes. In this paper we review the main approaches proposed in the literature to address the mentioned aspects in translucent EONs under dynamic traffic.