All-optical regenerator of multi-channel signals

L Li, PG Patki, YB Kwon, V Stelmakh… - Nature …, 2017 - nature.com
One of the main reasons why nonlinear-optical signal processing (regeneration, logic, etc.)
has not yet become a practical alternative to electronic processing is that the all-optical …

4 Tb/s transmission reach enhancement using 10× 400 Gb/s super-channels and polarization insensitive dual band optical phase conjugation

AD Ellis, M Tan, MA Iqbal, MAZ Al-Khateeb… - Journal of lightwave …, 2016 - opg.optica.org
In this paper, we experimentally demonstrate the benefit of polarization insensitive dual-
band optical phase conjugation for up to ten 400 Gb/s optical super-channels using a …

Self-learning machines based on hamiltonian echo backpropagation

V Lopez-Pastor, F Marquardt - Physical Review X, 2023 - APS
A physical self-learning machine can be defined as a nonlinear dynamical system that can
be trained on data (similar to artificial neural networks) but where the update of the internal …

Capacity limits of systems employing multiple optical phase conjugators

AD Ellis, ME McCarthy, MAZ Al-Khateeb, S Sygletos - Optics express, 2015 - opg.optica.org
We extend the theory of parametric noise amplification to the case of transmission systems
employing multiple optical phase conjugators, demonstrating that the excess noise due to …

Fiber nonlinearity mitigation of WDM-PDM QPSK/16-QAM signals using fiber-optic parametric amplifiers based multiple optical phase conjugations

H Hu, RM Jopson, AH Gnauck, S Randel… - Optics express, 2017 - opg.optica.org
We demonstrate fiber nonlinearity mitigation by using multiple optical phase conjugations
(OPCs) in the WDM transmission systems of both 8× 32-Gbaud PDM QPSK channels and 8× …

Kerr nonlinearity mitigation: mid-link spectral inversion versus digital backpropagation in 5× 28-GBd PDM 16-QAM signal transmission

I Sackey, F Da Ros, JK Fischer, T Richter… - Journal of Lightwave …, 2015 - ieeexplore.ieee.org
We experimentally investigate Kerr nonlinearity mitigation of a 28-GBd polarization-
multiplexed 16-QAM signal in a five-channel 50-GHz spaced wavelength-division …

Mitigation of nonlinear effects on WDM QAM signals enabled by optical phase conjugation with efficient bandwidth utilization

S Yoshima, Y Sun, Z Liu, KRH Bottrill… - Journal of Lightwave …, 2017 - opg.optica.org
We present nonlinear impairment mitigation of wavelength division multiplexed signals,
through optical phase conjugation (OPC). We conduct our experiments on a 400-km-long …

Characterization and optimization of a high-efficiency AlGaAs-on-insulator-based wavelength converter for 64-and 256-QAM signals

F Da Ros, MP Yankov, EP da Silva, M Pu… - Journal of Lightwave …, 2017 - opg.optica.org
In this paper, we demonstrate wavelength conversion of advanced modulation formats such
as 10-GBd 64-QAM and 256-QAM with high conversion efficiency over a 29-nm spectral …

Symmetry enhancement through advanced dispersion map** in OPC-aided transmission

PM Kaminski, F Da Ros, MP Yankov… - Journal of Lightwave …, 2021 - opg.optica.org
In this work, we present a novel strategy to satisfy the nonlinearity compensation criteria by
optical-phase-conjugation (OPC). Contrary to the most common approach, which relies on …

Improved compensation of intrachannel four-wave mixing in dispersion-managed transmission links with mid-span optical phase conjugation

W Cao - Optics Communications, 2023 - Elsevier
Recently, a novel approach to satisfy the nonlinearity compensation criteria by mid-span
optical-phase-conjugation (OPC) was proposed and excellent transmission performance …