Digital signal processing for fiber nonlinearities [Invited] clickable element to expand a topic
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We review probabilistic constellation shaping (PCS), which has been a key enabler for
several recent record-setting optical fiber communications experiments. PCS provides both …

In this paper, we discuss building blocks that enable the exploitation of optical capacities
beyond 100 Gb/s. Optical networks will benefit from more flexibility and agility in their …

We review the most recent advanced concepts and methods employed in the cutting-edge
spectrally efficient coherent fiber-optic transoceanic transmission systems, such as …

Distribution matching is a fixed-length invertible mapping from a uniformly distributed bit
sequence to shaped amplitudes and plays an important role in the probabilistic amplitude …

This paper presents design methods for highly efficient optimisation of geometrically shaped
constellations to maximise data throughput in optical communications. It describes methods …

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 …

Since its early commercial deployment in the late 1980s, optical fiber has evolved to become
the predominant carrier of the globe's communications. Yet, after accommodating the world's …

The advancement of digital coherent technologies has dramatically increased the system
capacity per single-core single-mode fiber to the point that we can now approach the …

Probabilistic shaping (PS) is a promising technique to approach the Shannon limit using a
typical constellation geometries. However, the impact of PS on the chain of signal …