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Versatile metal-wire waveguides for broadband terahertz signal processing and multiplexing

Author

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  • Junliang Dong

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Alessandro Tomasino

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Giacomo Balistreri

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications
    University of Palermo, Viale delle Scienze)

  • Pei You

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Anton Vorobiov

    (Faculty of Electrical Engineering, Helmut Schmidt University)

  • Étienne Charette

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Boris Le Drogoff

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Mohamed Chaker

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Aycan Yurtsever

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Salvatore Stivala

    (University of Palermo, Viale delle Scienze)

  • Maria A. Vincenti

    (University of Brescia)

  • Costantino Angelis

    (University of Brescia)

  • Detlef Kip

    (Faculty of Electrical Engineering, Helmut Schmidt University)

  • José Azaña

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

  • Roberto Morandotti

    (Institut national de la recherche scientifique, Centre Énergie Matériaux Télécommunications)

Abstract

Waveguides play a pivotal role in the full deployment of terahertz communication systems. Besides signal transporting, innovative terahertz waveguides are required to provide versatile signal-processing functionalities. Despite fundamental components, such as Bragg gratings, have been recently realized, they typically rely on complex hybridization, in turn making it extremely challenging to go beyond the most elementary functions. Here, we propose a universal approach, in which multiscale-structured Bragg gratings can be directly etched on metal-wires. Such an approach, in combination with diverse waveguide designs, allows for the realization of a unique platform with remarkable structural simplicity, yet featuring unprecedented signal-processing capabilities. As an example, we introduce a four-wire waveguide geometry, amenable to support the low-loss and low-dispersion propagation of polarization-division multiplexed terahertz signals. Furthermore, by engraving on the wires judiciously designed Bragg gratings based on multiscale structures, it is possible to independently manipulate two polarization-division multiplexed terahertz signals. This platform opens up new exciting perspectives for exploiting the polarization degree of freedom and ultimately boosting the capacity and spectral efficiency of future terahertz networks.

Suggested Citation

  • Junliang Dong & Alessandro Tomasino & Giacomo Balistreri & Pei You & Anton Vorobiov & Étienne Charette & Boris Le Drogoff & Mohamed Chaker & Aycan Yurtsever & Salvatore Stivala & Maria A. Vincenti & C, 2022. "Versatile metal-wire waveguides for broadband terahertz signal processing and multiplexing," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-27993-7
    DOI: 10.1038/s41467-022-27993-7
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    References listed on IDEAS

    as
    1. Jianjun Ma & Nicholas J. Karl & Sara Bretin & Guillaume Ducournau & Daniel M. Mittleman, 2017. "Frequency-division multiplexer and demultiplexer for terahertz wireless links," Nature Communications, Nature, vol. 8(1), pages 1-8, December.
    2. Kanglin Wang & Daniel M. Mittleman, 2004. "Metal wires for terahertz wave guiding," Nature, Nature, vol. 432(7015), pages 376-379, November.
    3. Jianjun Ma & Rabi Shrestha & Jacob Adelberg & Chia-Yi Yeh & Zahed Hossain & Edward Knightly & Josep Miquel Jornet & Daniel M. Mittleman, 2018. "Security and eavesdropping in terahertz wireless links," Nature, Nature, vol. 563(7729), pages 89-93, November.
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    Cited by:

    1. Yang Cao & Kathirvel Nallappan & Guofu Xu & Maksim Skorobogatiy, 2022. "Add drop multiplexers for terahertz communications using two-wire waveguide-based plasmonic circuits," Nature Communications, Nature, vol. 13(1), pages 1-12, December.

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