Annika Dochhan

TL;DR: Real-time transmission of 400G (8×50G DWDM) PAM-4 signals for data center interconnects up to 100 km SSMF is successfully demonstrated and all channels stay well below the 802.3bj KR4 FEC limit, thus allowing error free transmission.

TL;DR: In this article, a real-time 8 × 28.125 GBd dense wavelength division multiplexing four-level pulse amplitude modulation (PAM-4) transmission over up to 80 km standard single mode fiber in the C-band is demonstrated.

TL;DR: Low-cost high-capacity optical fronthaul solutions enabled by advanced modulation formats and wavelength-agnostic passive wavelength division multiplexing (WDM) technology are discussed, and an FPGA-based implementation providing low latency and low packet delay variation following the latest IEEE 802.1CM specification is presented.

TL;DR: PDM-64QAM, PAM4 and DMT are investigated, while the focus lies on directly detected solutions for 80 km DWDM transmission targeting inter data-center connections at 100G and 400G line rates.

TL;DR: In this article, different equalizer approaches including a common feedforward equalizer, a nonlinear Volterra equalizer (NLVE), a maximum likelihood sequence estimator (MLSE), and their combinations are evaluated working either as an equalizer for a standard PAM-4 or a partial response PAM4 signal with seven levels.