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

Author:

Hosseini Mohammad M.ORCID,Pedro João12ORCID,Napoli Antonio3,Costa Nelson1,Prilepsky Jaroslaw E.ORCID,Turitsyn Sergei K.ORCID

Affiliation:

1. Infinera Unipessoal Lda

2. Instituto de Telecomunicações, Instituto Superior Técnico

3. Infinera

Abstract

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.

Funder

H2020 Marie Skłodowska-Curie Actions

Engineering and Physical Sciences Research Council

European Commission

Fundação para a Ciência e a Tecnologia

Publisher

Optica Publishing Group

Subject

Computer Networks and Communications

Cited by 4 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Availability Analysis of Filterless P2MP Horseshoe Networks under Load Shedding;2024 IEEE 25th International Conference on High Performance Switching and Routing (HPSR);2024-07-22

2. Design of Horseshoe Networks with Low-Loss Filterless Nodes and Point-to-Multipoint Transceivers;2024 IEEE Photonics Society Summer Topicals Meeting Series (SUM);2024-07-15

3. Design of Scalable Filterless Horseshoe-and-Spur Networks with Coherent Point-to-Multipoint Transceivers;2024 24th International Conference on Transparent Optical Networks (ICTON);2024-07-14

4. Partial filterable optical networking: A gradual upgrade scheme for large-scale backbone networks;Optical Fiber Technology;2024-01

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