RT Journal Article
T1 All-optical aggregation and distribution of traffic in large metropolitan area networks using multi-Tb/s S-BVTs
A1 Rapisarda, Mariangela
A1 Hernández Gutiérrez, José Alberto
A1 Gatto, Alberto
A1 Parolari, Paola
A1 Boffi, Pierpaolo
A1 Svaluto Moreolo, Michela
A1 Fábrega, Josep Maria
A1 Nadal, Laia
A1 Martinez, Ricardo
A1 López, Víctor
A1 Fernández-Palacios, Juan-Pedro
A1 Otero Pérez, Gabriel
A1 Larrabeiti López, David
AB Current metropolitan area network architectures are based on a number of hierarchical levels that aggregate traffic toward the core at the IP layer. In this setting, routers are interconnected by means of fixed transceivers operating on a point-to-point basis where the rates of transceivers need to match. This implies a great deal of intermediate transceivers to collect traffic and groom and send it to the core. This paper proposes an alternative scheme based on sliceable bandwidth/bitrate variable transceivers (S-BVTs) where the slice-ability property is exploited to perform the aggregation of traffic from multiple edges 𝑛��-to-1 rather than 1-to-1. This approach can feature relevant cost reductions through IP offloading at intermediate transit nodes but requires viable optical signal-to-noise ratio (OSNR) margins for all-optical transmission through the network. In this work, we prove through simulation the viability and applicability of this technique in large metro networks with a vertical-cavity-surface-emitting laser-based S-BVT design to target net capacities per channel of 25, 40, and 50 Gb/s. The study reveals that this technology can support most of the paths required for IP offloading after simulation in a semi-synthetic topology modeling a 20-million-inhabitant metropolitan area. Moreover, OSNR margins enable the use of protection paths (secondary disjoint paths) between the target node and the core much longer than primary paths in terms of both the number of intermediate hops and kilometers.
PB Optica
SN 1943-0620
YR 2022
FD 2022-05-01
LK https://hdl.handle.net/10016/36293
UL https://hdl.handle.net/10016/36293
LA eng
NO European Union H2020 project PASSION, grant no. 780326 (http://www.passion-project.eu/).
DS e-Archivo
RD 1 sept. 2024