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Transmission of Single-Channel 16-QAM Data Signals at Terabaud Symbol Rates

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7 Author(s)
Thomas Richter ; Photonic Networks and Systems, Fraunhofer Institute for Telecommunications, Heinrich Hertz Institute, Berlin ; Evarist Palushani ; Carsten Schmidt-Langhorst ; Reinhold Ludwig
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We present latest results for OTDM transmission systems in combination with digital coherent detection achieving record-high serial data rates in a single-wavelength channel. We show serial data transmission of 5.1 Tb/s (640 GBd) over 80-km and 10.2 Tb/s (1.28 TBd) over 29-km dispersion managed fiber (DMF). For 5.1-Tb/s transmission over 80-km DMF, the BER of all 128 OTDM-tributaries (both polarizations) is found to be below the hard-decision FEC-threshold, corresponding to an error-free net data rate of 4.8 Tb/s. In a 10.2-Tb/s experiment, the BER of all 256 TDM-tributaries (both polarizations) is found to be below the FEC-threshold in the back-to-back configuration. This translates to an error-free net data rate of 9.5 Tb/s. After transmission over a 29-km DMF negligible pulse broadening and a BER below the FEC limit is found.

Published in:

Journal of Lightwave Technology  (Volume:30 ,  Issue: 4 )