Optimized design of filterless horseshoe networks exploiting point-to-multipoint coherent transceivers


The horseshoe topology is widely used to realize metro-aggregation networks, since it provides a natural fit to the hub-and-spoke traffic pattern present in the majority of these deployments, while enabling survivability against single link and hub failures. A filterless architecture can also be adopted to further reduce capital expenditure (CapEx) by replacing active elements, such as reconfigurable add/drop multiplexers, with simpler and passive splitters/combiners. Such an architecture can effectively host coherent-based point-to-multipoint (P2MP) transceivers enabled by digital subcarrier multiplexing (DSCM). Importantly, by carefully optimizing the deployment of amplifiers (location and gain) and splitters/combiners (type), it may be possible to reduce the total number of optical amplifiers required, further decreasing CapEx. This paper proposes an integer linear programming framework to optimize metro-aggregation filterless horseshoe networks, taking into account the specific requirements of DSCM-based P2MP coherent transceivers. The results indicate that a considerable reduction in amplifier count is possible while ensuring that end-to-end performance thresholds are met, which include the minimum required input power at the receivers, a maximum subcarrier input power difference at the hub’s receivers, and the minimum optical-signal-to-noise ratio.

Publication DOI: https://doi.org/10.1364/JOCN.494342
Divisions: College of Engineering & Physical Sciences > Aston Institute of Photonics Technology (AIPT)
College of Engineering & Physical Sciences
Additional Information: Copyright © 2023 Optica Publishing Group. One print or electronic copy may be made for personal use only. Systematic reproduction and distribution, duplication of any material in this paper for a fee or for commercial purposes, or modifications of the content of this paper are prohibited. Funding Information: H2020 Marie Skłodowska-Curie Actions (813144); Engineering and Physical Sciences Research Council (Transnet); European Commission H2020 B5G-OPEN (101016663); Fundacao para a Ciencia e a Tecnologia (50008).
Uncontrolled Keywords: Transceivers,Passive optical networks,Point-to-multipoint communications,Topology,Network topology,Optical receivers,Multiplexing
Publication ISSN: 1943-0639
Last Modified: 23 May 2024 07:27
Date Deposited: 18 Sep 2023 10:41
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Related URLs: https://opg.opt ... i=jocn-15-9-569 (Publisher URL)
http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2023-09-01
Published Online Date: 2023-08-02
Accepted Date: 2023-07-14
Authors: Hosseini, Mohammad M.
Pedro, Joao
Napoli, Antonio
Costa, Nelson
Prilepsky, Jaroslaw E. (ORCID Profile 0000-0002-3035-4112)
Turitsyn, Sergei K. (ORCID Profile 0000-0003-0101-3834)



Version: Accepted Version

Access Restriction: Restricted to Repository staff only until 2 August 2024.

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