The role of parallelism in the evolution of optical fiber communication systems

W Klaus, PJ Winzer, K Nakajima - Proceedings of the IEEE, 2022 - ieeexplore.ieee.org
In order to overcome the capacity limitations of current lightwave systems based on the
single-mode optical fiber, massively parallel transmission in the spatial domain [space …

Opportunities and challenges for long-distance transmission in hollow-core fibres

P Poggiolini, F Poletti - Journal of Lightwave Technology, 2022 - opg.optica.org
The loss of hollow-core Nested Antiresonant Nodeless Fiber (NANF) has been steadily
decreasing lately, approaching that of standard Single-Mode Fiber (SMF). As for non-linear …

Ultrawideband systems and networks: Beyond C+ L-band

T Hoshida, V Curri, L Galdino, DT Neilson… - Proceedings of the …, 2022 - ieeexplore.ieee.org
In the evolution of optical networks, spectral efficiency (SE) enhancement has been the most
cost-efficient and thus the main driver for capacity increase for decades. As a result, the …

GNPy model of the physical layer for open and disaggregated optical networking

V Curri - Journal of optical communications and networking, 2022 - opg.optica.org
Networking technologies are fast evolving to support the request for ubiquitous Internet
access that is becoming a fundamental need for the modern and inclusive society, with a …

Digital longitudinal monitoring of optical fiber communication link

T Sasai, M Nakamura, E Yamazaki… - Journal of Lightwave …, 2022 - opg.optica.org
Optical transmission links are generally composed of optical fibers, optical amplifiers, and
optical filters. In this paper, we present a channel reconstruction method (CRM) that extracts …

Scalable and disaggregated GGN approximation applied to a C+ L+ S optical network

A D'Amico, B Correia, E London, E Virgillito… - Journal of Lightwave …, 2022 - opg.optica.org
We investigate quality of transmission (QoT) estimation in a multi-band transmission
scenario, including a wideband description of the frequency-dependent physical layer …

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
Shaping 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 …

A survey on QoT prediction using machine learning in optical networks

L Zhang, X Li, Y Tang, J Xin, S Huang - Optical Fiber Technology, 2022 - Elsevier
In optical networks, a connection (eg, light-path and light-tree) is set up to carry data from its
source to destination (s). When the optical signal transmits through the fiber links and optical …

Efficient three-step amplifier configuration algorithm for dynamic C+ L-band links in presence of stimulated Raman scattering

Y Song, Q Fan, C Lu, D Wang… - Journal of Lightwave …, 2022 - ieeexplore.ieee.org
We propose an efficient three-step amplifier configuration algorithm to improve and maintain
the generalized signal-to-noise ratio (GSNR) performance of dynamic C+ L-band links in …

Kurtosis-limited sphere shaping for nonlinear interference noise reduction in optical channels

YC Gültekin, A Alvarado, O Vassilieva, I Kim… - Journal of Lightwave …, 2022 - opg.optica.org
Nonlinear interference (NLI) generated during the propagation of an optical waveform
through the fiber depends on the fourth order standardized moment of the channel input …