This tutorial paper provides a foundation for integrating probabilistic shaping (PS) and
forward error correction (FEC). A layered PS-FEC architecture consisting of a PS encoder …

We show that the normalized generalized mutual information represents an excellent
forward error correction (FEC) threshold for uniform as well as for probabilistically shaped …

We demonstrate concepts and results of a field trial for a flexible-rate passive optical network
(FLCS-PON), which delivers bitrates up to 100 Gbit/s and allows for adaptations in the …

We study the techno-economics of submarine systems constrained by a fixed electrical
power supply. We show significant cost savings for high-capacity submarine systems using …

Coherent passive optical network (PON) has been proposed to support the next generation
high-speed optical access network owing to the superior receiver sensitivity and thereby the …

We report the transmission of probabilistically shaped (PS) 64-ary quadrature amplitude
modulation (QAM) at 7.46 b/s/Hz over a 5523-km in-service trans-Atlantic fiber-optic cable …

We introduce and compare typical shaping schemes suitable for optical communications.
The geometrically shaped-quadrature amplitude modulation (GS-QAM) formats are …

The use of spectrally shaped amplified spontaneous emission noise (SS-ASE) as a method
for emulating interfering channels in optical fibre transmission systems has been studied. It …

We completed world's first field trial of FLCS-PON, which delivers bitrates up to 100 Gbit/s
and allows for flexible line and code rate to match users' channel conditions and optimize …

We present the operation of a 1.5-Gb/s real-time Y-00 quantum stream cipher as an overlay
in a modern coherent wavelength-division multiplexed (WDM) transmission system. We …