Advanced Modeling of Surface Waves on Twisted Pair Cables: Surface Wave Stopbands

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dc.creatorSchaich, Tobias
dc.creatorDinc, Ergin
dc.creatorMolnar, Daniel
dc.creatorDrolia, Mayank
dc.creatorBukhari, Syed
dc.creatorAziz, Ahmed
dc.creatorToledano, Ilana
dc.creatorMorsman, Trevor
dc.creatorBurton, Fraser
dc.creatorCrisp, Michael
dc.creatorde Lera Acedo, Eloy
dc.creatorAl Rawi, Anas
dc.creatorPenty, Richard
dc.creatorPayne, Mike
dc.date2022-05-25T08:01:49Z
dc.date2022-05-25T08:01:49Z
dc.date2022-05-01
dc.date2022-05-18T13:06:27Z
dc.date.accessioned2026-08-03T02:49:07Z
dc.descriptionAt the network access layer, optical fiber deployment continues at pace but copper cables containing twisted pairs (TWPs) will remain for some time and face an increasing bandwidth and data rate demand. Surface waves have been proposed to address these requirements. This article reports and investigates the existence of stopbands reaching over 50-dB insertion loss on 1-m-long, typical final drop cables under surface wave excitation at a few gigahertz. Coupled mode analysis shows that lack of helical symmetry enables the formation of a stopband in systems containing TWPs. A representative core model containing a single TWP alongside a straight wire is thoroughly studied. Numerical simulations and measurements confirm the crucial dependence of the stopband frequency on the twist rate of the TWP. Further investigation into the role of the dielectric coating and the distance of the straight wire is performed as well. Finally, in systems with multiple TWPs, we find that the twist rate associated with any pair can create a stopband effectively limiting surface wave propagation. Thus, careful design and deployment strategies are required for use of surface waves on legacy copper networks.
dc.formatapplication/pdf
dc.identifier0018-9480
dc.identifierhttps://www.repository.cam.ac.uk/handle/1810/337454
dc.identifier10.17863/CAM.84867
dc.identifier1557-9670
dc.identifier.urihttps://repo.dare.co.zw/handle/123456789/169390
dc.languageeng
dc.publisherInstitute of Electrical and Electronics Engineers (IEEE)
dc.publisherDepartment of Physics
dc.publisherDepartment of Engineering
dc.publisherhttps://doi.org/10.1109/tmtt.2022.3160708
dc.rightsAll Rights Reserved
dc.rightshttp://www.rioxx.net/licenses/all-rights-reserved
dc.subject51 Physical Sciences
dc.subject5103 Classical Physics
dc.titleAdvanced Modeling of Surface Waves on Twisted Pair Cables: Surface Wave Stopbands
dc.typeArticle

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