Single-carrier 400G 64QAM and 128QAM DWDM field trial transmission over metro legacy links
ArticleKhanna, G., Rahman, T., De Man, E., Riccardi, E., Pagano, A., Piat, A.C., Calabro, S., Spinnler, B., Rafique, D., Feiste, U., de Waardt, H., Sommerkorn-Krombholz, B., Hanik, N., Drenski, T., Bohn, M. & Napoli, A. (2017). Single-carrier 400G 64QAM and 128QAM DWDM field trial transmission over metro legacy links. IEEE Photonics Technology Letters, 29(2), 189-192. In Scopus Cited 3 times.
We report on the results of a field trial carried out on a Telecom Italia metro link, targeting short data center interconnect applications. The test-bed presented realistic transmission conditions, such as an average ~0.3-dB/km attenuation and usage of legacy erbium-doped fiber amplifier (EDFA) only. We transmitted a net bit rate of 400 Gb/s on a single carrier with 64 quadrature amplitude modulation (QAM) and 128QAM over 156 km. Error-free transmission over 80 km for single carrier dense wavelength-division multiplexing (DWDM) 30×400G 64QAM and 30×400G 128QAM (one half of the C -band) is reported. The net spectral efficiency, for both schemes, is 7.11 b/s/Hz.