All-Digital 16 QAM Nyquist Pulse Transmission Over 4,000 Km
We present the first demonstration of coherent Nyquist pulse TDM transmission in a fully digital scheme. 40-Gbaud, 16-QAM signals were transmitted over 4,000-km, which is <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$300-\text{km}$</tex> longer than an NRZ transmission with a Nyquist filter.
Authors
- Toshihiko Hirooka (ORCID: https://orcid.org/0000-0002-7446-7119)
- Masataka Nakazawa (ORCID: https://orcid.org/0000-0001-6323-1445)
- Masato Yoshida (ORCID: https://orcid.org/0000-0002-8818-9519)
- Keisuke Kasai (ORCID: https://orcid.org/0000-0002-0261-2006)
- Takeki Serikawa
Institutions
- Tohoku University (JP)
Publication Details
- Published
- 2025-06-29
- DOI
- https://doi.org/10.23919/oecc/psc62146.2025.11109099
- Primary Topic
- Optical Network Technologies
- Type
- article
- Field-Weighted Citation Impact
- 0.00