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One Terahertz Full-Field Digital Back-Propagation over 3000 km

Eric Sillekens, Ruben S. Luis, Giammarco Di Sciullo, Robert Emmerich, Carlo Centofanti, Daniele Orsuti, Robson A. Colares, Mindaugas Jarmolovičius, Ronit Sohanpal, Darli A. A. Melo, Luca Palmieri, Colja Schubert, Ronald Freund, Cristian Antonelli, Robert I. Killey, Polina Bayvel, Hideaki Furukawa

arXiv:2606.25571Published June 24, 20260 citations
  • eess.SP

Abstract

We implement full-field digital back-propagation with a 1-THz receiver using 20 synchronous frequency-adjacent coherent receivers with digital stitching and a frequency-comb local oscillator. Relative to electronic dispersion compensation, per-channel DBP and full-field DBP achieve throughput gains of 2.2\% and 5.4\%, respectively.

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