We demonstrate 32.5 Tbit/s 16QAM Nyquist WDM transmission over a total length of 227 km of SMF-28 without optical dispersion compensation. A number of 325 optical carriers are derived from a single laser and encoded with dual-polarization 16QAM data using sinc-shaped Nyquist pulses. As we use no guard bands, the carriers have a spacing of 12.5 GHz equal to the Nyquist bandwidth of the data. We achieve a high net spectral efficiency of 6.4 bit/s/Hz using a software-defined transmitter which generates the electrical modulator drive signals in real-time.
@article{arxiv.1203.2516,
title = {Single-laser 32.5 Tbit/s Nyquist WDM transmission},
author = {David Hillerkuss and Rene Schmogrow and Matthias Meyer and Stefan Wolf and Meinert Jordan and Philipp Kleinow and Nicole Lindenmann and Philipp C. Schindler and Argishti Melikyan and Xin Yang and Shalva Ben-Ezra and Bernd Nebendahl and Michael Dreschmann and Joachim Meyer and Francesca Parmigiani and Periklis Petropoulos and Bojan Resan and Aandreas Oehler and Kurt Weingarten and Lars Altenhain and Tobias Ellermeyer and Matthias Moeller and Michael Huebner and Juergen Becker and Christian Koos and Wolfgang Freude and Juerg Leuthold},
journal= {arXiv preprint arXiv:1203.2516},
year = {2016}
}
Comments
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