Reduced-state MLSE for an IM/DD system using PAM modulation

Y Yu, Y Che, T Bo, D Kim, H Kim - Optics express, 2020 - opg.optica.org
The performance of a high-speed intensity-modulation (IM)/direct-detection (DD)
transmission system could be limited by the bandwidth of optical transceivers. One popular …

Low-complexity frequency-domain nonlinear equalizer with absolute operation for underwater wireless optical communications

Y Zhou, J Zhang, C Lu, C Guo - Optics Express, 2023 - opg.optica.org
A low-complexity 3^ rd-order frequency-domain nonlinear equalizer (FD-NLE) with absolute
operation is proposed and experimentally demonstrated for underwater wireless optical …

Low-complexity sparse absolute-term based nonlinear equalizer for C-band IM/DD systems

J Zhang, Z Lin, X Wu, J Liu, AP Tao Lau, C Guo… - Optics express, 2021 - opg.optica.org
A low-complexity sparse absolute-term based nonlinear equalizer (AT-NLE) is proposed to
eliminate the nonlinear signal distortions for intensity modulation and direct detection …

Low-complexity nonlinear equalizer based on absolute operation for C-band IM/DD systems

Y Yu, T Bo, Y Che, D Kim, H Kim - Optics express, 2020 - opg.optica.org
The intensity-modulation/direct-detection transmission system operating in the C-band
suffers from nonlinear waveform distortions induced by fiber chromatic dispersion due to the …

Low complexity Volterra nonlinear equalizer based on weight sharing for 50 Gb/s PAM4 IM/DD transmission with 10G-class optics

Q Zhang, S Duan, Z Wang, B Cao, Y Wu, J Chen… - Optics …, 2022 - Elsevier
In this paper, an improved Volterra nonlinear equalizer with low computational complexity
and good performance is proposed to compensate the distortions caused by bandwidth …

A simplified Volterra equalizer based on system characteristics for direct modulation laser (DML)-based intensity modulation and direct detection (IM/DD) transmission …

Z Feng, N Li, W Li, P He, M Luo, Q Hu, L Huang… - Photonics, 2023 - mdpi.com
The nonlinear Volterra equalizer has been proved to be able to solve the problem of
nonlinear distortion, but it has high computational complexity and is difficult to implement. In …

Sub-rate sampled, non-integer fractionally spaced Volterra nonlinear equalizer for IM/DD systems

J Kim, H Kim - Optics Express, 2024 - opg.optica.org
As high-speed analog-to-digital converters (ADC) account for a significant portion of the
receiver's cost in intensity-modulation (IM)/direct-detection (DD) systems, there have been …

[HTML][HTML] Comparison of post-equalizers for beyond 100-Gb/s/λ C-band signal transmission over a 100-km dispersion-uncompensated SSMF

X Wu, J Zhang, APT Lau, C Lu - Optics Communications, 2023 - Elsevier
A comprehensive comparison among different post-equalizers with relatively low complexity
is studied for C-band 100-km dispersion-uncompensated standard single-mode fiber …

High-Speed Dispersion-Unmanaged DML-Based IM-DD Optics at C-band with Advanced Nonlinear Equalization and Noise Whitening

Q Wu, Z Xu, Y Zhu, T Ji, H Ji, Y Yang… - Journal of Lightwave …, 2024 - ieeexplore.ieee.org
Directly modulated lasers (DMLs) have been implemented in short-reach optical networks
as an intensity modulation and direct detection (IM-DD) scheme due to their high output …

A modified Volterra equalizer for compensation distortion in C-band DML-based short reach limited-bandwidth system with 80-Gb/s PAM-4 signals

Y Xi, M Bi, X Miao, W Hu - Optics Communications, 2022 - Elsevier
In this paper, we investigate the system model of intensity modulation with direct detection
(IM/DD)-based high-speed short-reach link with directly modulation laser (DML) and …