First demonstration of real-time end-to-end 40 Gb/s PAM-4 system using 10-G transmitter for next generation access applications. - Jinlong Wei; Nicklas Eiselt; Helmut Griesser; Klaus Grobe; Michael Eiselt; Juan Jose Vegas Olmos; Idelfonso Tafur Monroy; Jörg-Peter Elbers (ECOC, 2015)

Investigation of PAM-4 for extending reach in data center interconnect applications. - Brian Thomas Teipen; Nicklas Eiselt; Annika Dochhan; Helmut Griesser; Michael Eiselt; Jörg-Peter Elbers (ICTON, 2015)

Real-time evaluation of 26-GBaud PAM-4 intensity modulation and direct detection systems for data-center interconnects. - Nicklas Eiselt; Helmut Griesser; Jinlong Wei; Annika Dochhan; Michael Eiselt; Jörg-Peter Elbers; Juan Jose Vegas Olmos; Idelfonso Tafur Monroy (OFC, 2016)

First real-time 400G PAM-4 demonstration for inter-data center transmission over 100 km of SSMF at 1550 nm. - Nicklas Eiselt; Jinlong Wei; Helmut Griesser; Annika Dochhan; Michael Eiselt; Jörg-Peter Elbers; Juan Jose Vegas Olmos; Idelfonso Tafur Monroy (OFC, 2016)

Digital pre-emphasis based system design trade-offs for 64 Gbaud coherent data center interconnects. - Danish Rafique; Nicklas Eiselt; Helmut Griesser; Benjamin Wohlfeil; Michael Eiselt; Jörg-Peter Elbers (ICTON, 2017)

Direct detection solutions for 100G and beyond. - Michael H. Eiselt; Nicklas Eiselt; Annika Dochhan (OFC, 2017)

Real-time 200 Gb/s (4×56.25 Gb/s) PAM-4 transmission over 80 km SSMF using quantum-dot laser and silicon ring-modulator. - Nicklas Eiselt; Helmut Griesser; Michael Eiselt; Wilfried Kaiser; Saeid Aramideh; Juan Jose Vegas Olmos; Idelfonso Tafur Monroy; Jörg-Peter Elbers (OFC, 2017)

First Demonstration of Fully Integrated Segmented Driver and MZM in 0.25-µm SiGe BiCMOS employing 112 Gb/s PAM4 over 60 km SSMF. - Benjamin Wohlfeil; Nicklas Eiselt; Pedro Rito; Annika Dochhan; Gilda Raoof Mehrpoor; Danish Rafique; Despoina Petousi; Iria Garcia Lopez; Stefan Lischke; Dietmar Kissinger; Lars Zimmermann; Michael Eiselt; et al. (ECOC, 2018)

Performance Comparison of 112 Gb/s DMT, Nyquist PAM4 and Partial-Response PAM4 for Future 5G Ethernet-based Fronthaul Architecture. - Nicklas Eiselt; Daniel Muench; Annika Dochhan; Helmut Griesser; Michael Eiselt; Juan Jose Vegas Olmos; Idelfonso Tafur Monroy; Jörg-Peter Elbers (CoRR, 2018)