Celebrating the 20^ th anniversary of Optics Express, this paper reviews the evolution of
optical fiber communication systems, and through a look at the previous 20 years attempts to …

We review the use of optical frequency combs in wavelength-division multiplexed (WDM)
fiber optic communication systems. In particular, we focus on the unique possibilities that are …

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

Microresonator frequency combs harness the nonlinear Kerr effect in an integrated optical
cavity to generate a multitude of phase-locked frequency lines. The line spacing can reach …

This tutorial paper provides a foundation for integrating probabilistic sha** (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 review the most recent advanced concepts and methods employed in the cutting-edge
spectrally efficient coherent fiber-optic transoceanic transmission systems, such as …

We explore the potential benefits of digital nonlinearity compensation (NLC) techniques in
fully loaded coherent wavelength-division multiplexed (WDM) transmission systems. After …

In the optical communication, ultra-wide band (UWB) wavelength division multiplexing
(WDM) transmission systems have been gathering considerable attention because it is …

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 …