We review probabilistic constellation sha** (PCS), which has been a key enabler for
several recent record-setting optical fiber communications experiments. PCS provides both …

We report the successful transmission of ten 494.85 Gbit/s DWDM signals on the standard
50 GHz ITU-T grid over 32× 100 km of ultra-large-area (ULA) fiber. A net spectral efficiency …

This tutorial paper reviews advanced modulation techniques that have been proposed in the
literature for the implementation of flexible (or reconfigurable) transceivers, which are …

The escalating demand for greater transmission capacities in the forthcoming 6? G
communication landscapes necessitates the investigation of upper segments of the …

We report the transmission of time domain hybrid QAM (TDHQ) signals for agile optical
networks. A continuous tradeoff between spectral efficiency and achievable distance by …

Underwater visible light communication (UVLC) systems suffer from a strong nonlinear effect
and high inter-symbol interference (ISI). In this study, to improve the performance of a UVLC …

This paper presents a systematic review of several digital signal processing (DSP)-enabled
technologies recently proposed and demonstrated for high spectral efficiency (SE) 400 Gb/s …

We review the recent technology advancements related to the transmission of 400Gb/s,
wavelength-division-multiplexed channels for optical networks based on the standard 50 …

In this paper, we analyze hybrid modulation formats as an effective technology for the
implementation of flexible transponders that are capable of trading off the delivered data rate …

We propose four strategies for TDHMF Tx operation. BER minimization permits PM-
QPSK/PM-16QAM performance similar to PM-8QAM's. In TDHMF nonlinear propagation …