High-speed reach-extended IM-DD system with low-complexity DSP for 6G fronthaul

P Zhu, Y Yoshida, K Akahane… - Journal of Optical …, 2024 - opg.optica.org
With the rising traffic demand from the metaverse, holographic communications, and so on,
in beyond-5G (B5G)/6G cloud radio access networks (C-RANs), fronthaul (FH) networks that …

Photonics-aided D-band 64-QAM MMW transmission utilizing modified multi-symbol output neural network equalization

Q Chen, W You, K Liu, S Wang, L Zhao, H Wen - Optical Fiber Technology, 2024 - Elsevier
We propose a modified multi-symbol output (MSO) neural network (NN)-based equalization
scheme. In this scheme, the multi-label realization is optimized to support high-order 64 …

Beyond 200 Gb/s/λ C-band PAM-4 low-latency transmission over 20-km nested antiresonant nodeless fiber

H Chen, Y Zhao, L Zhang, H Ji, Z Xu, F Yue, J Luo… - Optics …, 2024 - opg.optica.org
The rapid growth of modern Internet applications demands ever-increasing transmission
capacity and reduced latency in optical interconnect systems utilizing intensity modulation …

Two-Channel OTDM System for Data-Center Interconnects: A Review

S Bae, HJ Kim - Sensors, 2023 - mdpi.com
It has been proposed to implement the> 100 Gb/s data-center interconnects using a two-
channel optical time-division multiplexed system with multilevel pulse-amplitude modulation …

[HTML][HTML] FPGA Implementation for 24.576-Gbit/s Optical PAM4 Signal Transmission with MLP-Based Digital Pre-Distortion

S Hu, T Zheng, C Bian, X Yang, X Sun… - Sensors (Basel …, 2024 - pmc.ncbi.nlm.nih.gov
In this work, we implemented a short-reach real-time optical communication system using
MLP for pre-distortion. Lookup table (LUT) algorithms are commonly employed for pre …

One-shot pre-equalization scheme based<? pag\break?> on frequency pilot tones for bandwidth-limited<? pag\break?> IM/DD DCI transmission

C Wang, J Long, B Sang, K Wang, W Zhou, X Yang… - Optics Letters, 2024 - opg.optica.org
O-band intensity modulation and direct detection (IM/DD) transmission offers a promising
solution for high-speed data center interconnects (DCIs). Additionally, the introduction of …

FPGA-based two-stage flip** PAM-8 signal transmission for an IM/DD system

Y Gou, X Sun, K Wang, Z Zhu, L Zhang, Y Meng… - Optical Fiber …, 2024 - Elsevier
In this paper, we propose a novel probability sha** (PS) scheme for PAM-8 signal, making
the PAM-8 signal approximately obey the Maxwell Boltzmann distribution. The advantage of …

Reach Extension of Net-200G/λ IM-DD PAM4 Links to Beyond-100km with Low-complexity Using OE-EQ

P Zhu, Y Yoshida, K Akahane… - Optical Fiber …, 2024 - opg.optica.org
We report C-band net-202Gb/s/λ IM-DD PAM4 transmission over single-span up-to-100.9
km SSMF using only a single-drive intensity modulator, one PD, one ADC, low-complexity …

256 GBaud C-band RRM-based OOK Transmission Using CNN-GRU and Bi-LSTM Equalization

D Li, Y Osadchuk, A Ostrovskis… - 2024 Asia …, 2024 - ieeexplore.ieee.org
Ring resonator-based modulators are essential in high-speed intra-data center
communication links, providing efficient modulation with high bandwidth and low power …

4× 224Gb/s WDM PAM4 Transmission over 30km SMF Based on Optoelectronic Feedforward Equalization (OE-FFE) for 6G Digital Fronthaul

P Zhu, Y Yoshida, K Kitayama… - … Topical Meeting on …, 2024 - ieeexplore.ieee.org
We experimentally demonstrate the first lowcomplexity C-band 4× 224Gb/s DWDM intensity
modulation direct detection (IM-DD) PAM4 transmission over 30km singlemode fiber, which …