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DAC-free ultralow-power dual-polarization 64-QAM transmission at 32 GBd with hybrid InP IQ SEMZM and BiCMOS drivers module

: Lopez, I.G.; Aimone, A.; Alreesh, S.; Rito, P.; Brast, T.; Höhns, V.; Fiol, G.; Gruner, M.; Fischer, J.K.; Honecker, J.; Steffan, A.G.; Kissinger, D.; Ulusoy, A.C.; Schell, M.


Journal of Lightwave Technology 35 (2017), No.3, pp.404-410
ISSN: 0733-8724
Optical Fiber Communication Conference and Exposition (OFC) <2016, Anaheim/Calif.>
Bundesministerium für Bildung und Forschung BMBF
Journal Article
Fraunhofer HHI ()

A hybrid transmitter module comprising a 15-segment InP IQ segmented Mach-Zehnder modulator and two 0.13 mu m BiCMOS SiGe:C drivers with integrated 4-bit DAC functionality is described. The high-resolution prototype allows a wide range of modulation formats and, for the first time, ultralow-power dual-polarization (DP) 64-QAM signal generation at record speed of 32 GBd without the usage of external DACs is demonstrated. The DP 64-QAM signal is transmitted error free over 80 km of SSMF with 7.8 pJ/bit/polarization energy consumption. Post-FEC BER results are presented, with more than 226 bits decoded without errors after four decoding iterations. The package footprint is 28 mm x 76 mm. These results evidence the advantage of the proposed arrangement for the next generation low-power high-speed optical transceivers.