405-GBd OOK and 201-GBd PAM-4 IM/DD Optics at Record Faster-Than-Nyquist Ratios of 226.6% and 62.1% Enabled by Advanced Noise Whitening

We experimentally demonstrate 405-GBd OOK and 201-GBd PAM-4 signaling in an intensity modulation and direct detection system with a 62-GHz brick-wall bandwidth. Record faster-than-Nyquist ratios of 226.6% and 62.1% are successfully achieved for OOK and PAM-4 modulations, enabled by the proposed grad...

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Published in2023 Asia Communications and Photonics Conference/2023 International Photonics and Optoelectronics Meetings (ACP/POEM) pp. 1 - 6
Main Authors Wu, Qi, Xu, Zhaopeng, Zhu, Yixiao, Ji, Honglin, Yang, Yu, Liang, Junpeng, Qiao, Gang, Wang, Shangcheng, Liu, Lulu, Wei, Jinlong, Zhuge, Qunbi, Hu, Weisheng
Format Conference Proceeding
LanguageEnglish
Published IEEE 04.11.2023
Subjects
Asia
Bandwidth
faster-than-Nyquist
IM-DD
Intensity modulation
Modulation
Next generation networking
noise whitening
OOK
Optics
PAM-4
Photonics
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Summary:We experimentally demonstrate 405-GBd OOK and 201-GBd PAM-4 signaling in an intensity modulation and direct detection system with a 62-GHz brick-wall bandwidth. Record faster-than-Nyquist ratios of 226.6% and 62.1% are successfully achieved for OOK and PAM-4 modulations, enabled by the proposed gradient-decent noise whitening technique.
DOI:10.1109/ACP/POEM59049.2023.10368686