On the Filter Narrowing Issues in Elastic Optical Networks

J. M. Fabrega, M. Svaluto Moreolo, L Martín, A. Chiadò Piat, E. Riccardi, D. Roccato, N. Sambo, F. Cugini, L. Potì, ShuangYi Yan, Emilio Hugues Salas, Dimitra Simeonidou, M. Gunkel, R Palmer, S. Fedderwitz, D. Rafique, T. Rahman, Huug de Waardt, A. Napoli

Research output: Contribution to journalArticle (Academic Journal)peer-review

54 Citations (Scopus)
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This paper describes the problematic filter narrowing effect in the context of next-generation elastic optical networks. First, three possible scenarios are introduced: the transition from an actual fixed-grid to a flexi-grid network, the generic full flexi-grid network, and a proposal for a filterless optical network. Next, we investigate different transmission techniques and evaluate the penalty introduced by the filtering effect when considering Nyquist wavelength division multiplexing, single side-band direct-detection orthogonal frequency division multiplexing, and symbol-rate variable dual polarization quadrature amplitude modulation. Also, different approaches to compensate for the filter narrowing effect are discussed. Results show that the specific needs per each scenario can be fulfilled by the aforementioned technologies and techniques or a combination of them, when balancing performance, network reach, and cost.
Original languageEnglish
Pages (from-to)A23-A33
Number of pages11
JournalIEEE/OSA Journal of Optical Communications and Networking
Issue number7
Publication statusPublished - 1 Jul 2016


  • Fiber optics and optical communications
  • Fiber optics communications
  • Networks
  • Optical communications
  • All-optical networks


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