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A performance comparison of single-ended- and differential driving scheme at 64 Gbit/s QPSK modulation for InP-based IQ-Mach-Zehnder modulators in serial-push-pull configuration

: Rausch, M.; Wolf, N.; Yan, L.; Velthaus, K.-O.; Hoffmann, D.; Gruner, M.; Schell, M.


Institute of Electrical and Electronics Engineers -IEEE-:
41st European Conference on Optical Communication, ECOC 2015. Vol.2 : Valencia, Spain, 27 September - 1 October 2015
Piscataway, NJ: IEEE, 2015
ISBN: 978-1-4673-7950-2 (Print)
ISBN: 978-8-4608-1741-3
European Conference and Exhibition on Optical Communication (ECOC) <41, 2015, Valencia>
Fraunhofer HHI ()

We show the positive impact of differential driving on the optical QPSK signal performance. For the first time, an EVM of <6% at 32 GBd QPSK has been achieved for a low power InP-IQM design, enabling small form factor transmitters.