Assessment on the Achievable Throughput of Multi-band ITU-T G.652.D Fiber Transmission Systems

Alessio Ferrari, Antonio Napoli, Johannes Karl Fischer, Nelson Manuel Simoes Da Costa, Andrea D'amico, Joao Pedro, Wladek Forysiak, Erwan Pincemin, Andrew Lord, Alexandros Stavdas, Juan Pedro Fernandez-palacios Gimenez, Gunther Roelkens, Nicola Calabretta, Silvio Abrate, Bernd Sommerkorn-krombholz, Vittorio Curri

    Research output: Contribution to journalArticlepeer-review


    Fiber-optic multi-band transmission (MBT) aims at exploiting the low-loss spectral windows of single-mode fibers (SMFs) for data transport, expanding by ∼11× the available bandwidth of C-band line systems and by ∼5× C+L-band line systems'. MBT offers a high potential for cost-efficient throughput upgrades of optical networks, even in absence of available dark-fibers, as it utilizes more efficiently the existing infrastructures. This represents the main advantage compared to approaches such as multi-mode/-core fibers or spatial division multiplexing. Furthermore, the industrial trend is clear: the first commercial C+L-band systems are entering the market and research has moved toward the neighboring S-band. This article discusses the potential and challenges of MBT covering the ITU-T optical bands O → L. MBT performance is assessed by addressing the generalized SNR (GSNR) including both the linear and non-linear fiber propagation effects. Non-linear fiber propagation is taken into account by computing the generated non-linear interference by using the generalized Gaussian-noise (GGN) model, which takes into account the interaction of non-linear fiber propagation with stimulated Raman scattering (SRS), and in general considers wavelength-dependent fiber parameters. For linear effects, we hypothesize typical components' figures and discussion on components' limitations, such as transceivers,' amplifiers' and filters' are not part of this work. We focus on assessing the transmission throughput that is realistic to achieve by using feasible multi-band components without specific optimizations and implementation discussion. So, results are meant to address the potential throughput scaling by turning-on excess fiber transmission bands. As transmission fiber, we focus exclusively on the ITU-T G.652.D, since it is the most widely deployed fiber type worldwide and the mostly suitable to multi-band transmission, thanks to its ultra-wide low-loss single-mode high-dispersion spectral region. Similar analyses could be carried out for other single-mode fiber types. We estimate a total single-fiber throughput of 450 Tb/s over a distance of 50 km and 220 Tb/s over regional distances of 600 km: ∼ 10 × and 8× more than C-band transmission respectively and ∼ 2.5× more than full C+L.

    Original languageEnglish
    Article number9076329
    Pages (from-to)4279-4291
    Number of pages13
    JournalJournal of Lightwave Technology
    Issue number16
    Early online date22 Apr 2020
    Publication statusPublished - 15 Aug 2020

    Bibliographical note

    © 2020 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. Funding: This work was fundedby the H2020 Metro-Haul project, no. 761727; and
    by the European Union Horizon 2020 research and innovation program under
    the Marie Skłodowska-Curie ETN WON, grant agreements 814276.


    • Multi-band fiber transmission
    • elastic optical networks
    • high-capacity systems


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