Roadmap of optical communications

E Agrell, M Karlsson, AR Chraplyvy… - Journal of …, 2016 - iopscience.iop.org
Lightwave communications is a necessity for the information age. Optical links provide
enormous bandwidth, and the optical fiber is the only medium that can meet the modern …

Digital signal processing for fiber nonlinearities

JC Cartledge, FP Guiomar, FR Kschischang, G Liga… - Optics express, 2017 - opg.optica.org
Digital signal processing for fiber nonlinearities [Invited] clickable element to expand a topic
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On probabilistic sha** of quadrature amplitude modulation for the nonlinear fiber channel

T Fehenberger, A Alvarado… - Journal of Lightwave …, 2016 - ieeexplore.ieee.org
Different aspects of probabilistic sha** for a multispan optical communication system are
studied. First, a numerical analysis of the additive white Gaussian noise (AWGN) channel …

Beyond 100 Gb/s: capacity, flexibility, and network optimization

K Roberts, Q Zhuge, I Monga, S Gareau… - Journal of Optical …, 2017 - opg.optica.org
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 …

Nonlinear interference mitigation: Methods and potential gain

R Dar, PJ Winzer - Journal of Lightwave Technology, 2017 - ieeexplore.ieee.org
We explore the potential benefits of digital nonlinearity compensation (NLC) techniques in
fully loaded coherent wavelength-division multiplexed (WDM) transmission systems. After …

Hierarchical distribution matching for probabilistically shaped coded modulation

T Yoshida, M Karlsson, E Agrell - Journal of Lightwave …, 2019 - ieeexplore.ieee.org
The implementation difficulties of combining distribution matching (DM) and dematching
(invDM) for probabilistic sha** (PS) with soft-decision forward error correction (FEC) …

Geometrically-shaped multi-dimensional modulation formats in coherent optical transmission systems

B Chen, Y Lei, G Liga, Z Liang, W Ling… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
Sha** modulation formats in multi-dimensional (MD) space is an effective approach to
harvest spectral efficiency gains in both the additive white Gaussian noise (AWGN) channel …

High capacity transport—100G and beyond

K Roberts, SH Foo, M Moyer, M Hubbard… - Journal of Lightwave …, 2014 - ieeexplore.ieee.org
For excellent cost and performance, modern high capacity transport systems use digital
coherent processing to overcome many physical barriers. Coherent methods are explained …

Polarization-ring-switching for nonlinearity-tolerant geometrically shaped four-dimensional formats maximizing generalized mutual information

B Chen, C Okonkwo, H Hafermann… - Journal of Lightwave …, 2019 - ieeexplore.ieee.org
In this paper, a new four-dimensional 64-ary polarization ring switching (4D-64PRS)
modulation format with a spectral efficiency of 6 bit/4D-sym is introduced. The format is …

Capacity-approaching transmission over 6375 km at spectral efficiency of 8.3 bit/s/Hz

S Zhang, F Yaman, YK Huang, JD Downie… - Optical Fiber …, 2016 - opg.optica.org
Abstract Transmission capacities of 34.9 Tb/s over 6375 km based on Gaussian-like DP-
64APSK and 33.3 Tb/s over 6800 km using DP-32QAM are demonstrated using hybrid …