Recent advances in equalization technologies for short-reach optical links based on PAM4 modulation: A review

H Zhou, Y Li, Y Liu, L Yue, C Gao, W Li, J Qiu, H Guo… - Applied Sciences, 2019 - mdpi.com
In recent years, short-reach optical links have attracted much more attention and have come
to constitute a key market segment due to the rapid development of data-center applications …

Recent Advances in Coherent Optical Communications for Short-Reach: Phase Retrieval Methods

AS Karar, ARE Falou, JMH Barakat, ZN Gürkan… - Photonics, 2023 - mdpi.com
Short-reach transmission systems traditionally utilize intensity modulation (IM) at the
transmitter and direct detection (DD) at the receiver due to their cost-effectiveness, small …

Bi-directional gated recurrent unit neural network based nonlinear equalizer for coherent optical communication system

X Liu, Y Wang, X Wang, H Xu, C Li, X Xin - Optics Express, 2021 - opg.optica.org
We propose a bi-directional gated recurrent unit neural network based nonlinear equalizer
(bi-GRU NLE) for coherent optical communication systems. The performance of bi-GRU NLE …

200 Gbps/lane IM/DD technologies for short reach optical interconnects

X Pang, O Ozolins, R Lin, L Zhang… - Journal of Lightwave …, 2020 - opg.optica.org
Client-side optics are facing an ever-increasing upgrading pace, driven by upcoming 5G
related services and datacenter applications. The demand for a single lane data rate is soon …

DSP for high-speed short-reach IM/DD systems using PAM

T Wettlin, S Calabrò, T Rahman, J Wei… - Journal of Lightwave …, 2020 - ieeexplore.ieee.org
Intensity modulation and direct detection (IM/DD) together with pulse amplitude modulation
(PAM) is a cost-efficient solution for intra-datacenter links. However, sophisticated digital …

Machine learning for optical fiber communication systems: An introduction and overview

JW Nevin, S Nallaperuma, NA Shevchenko, X Li… - Apl Photonics, 2021 - pubs.aip.org
Optical networks generate a vast amount of diagnostic, control, and performance monitoring
data. When information is extracted from these data, reconfigurable network elements and …

Machine learning for 100 Gb/s/λ passive optical network

L Yi, T Liao, L Huang, L Xue, P Li… - Journal of Lightwave …, 2019 - opg.optica.org
Responding to the growing bandwidth demand by emerging applications, such as fixed-
mobile convergence for fifth generation (5G) and beyond 5G, 100 Gb/s/λ access network …

Higher-order modulation vs faster-than-Nyquist PAM-4 for datacenter IM-DD optics: an AIR comparison under practical bandwidth limits

D Che, X Chen - Journal of Lightwave Technology, 2022 - opg.optica.org
The 4-ary pulse amplitude modulation (PAM-4) has been widely deployed to both electrical
and optical interfaces in datacenter applications. Based on 100-GBd PAM-4, the 200G per …

Performance comparison of DML, EML and MZM in dispersion-unmanaged short reach transmissions with digital signal processing

K Zhang, Q Zhuge, H Xin, W Hu, DV Plant - Optics express, 2018 - opg.optica.org
In this paper, transmission performances of directly modulated laser (DML), electro-
absorption modulated laser (EML) and Mach-Zehnder modulator (MZM) are experimentally …

Deep learning based end-to-end visible light communication with an in-band channel modeling strategy

Z Li, J Shi, Y Zhao, G Li, J Chen, J Zhang, N Chi - Optics Express, 2022 - opg.optica.org
Aside from ambient light noise, shot noise, and linear/nonlinear effects, strong low-frequency
noise (LFN) severely affects the signal quality in LED-based visible light communication …