Super-Nyquist-WDM transmission over 7,326-km seven-core fiber with capacity-distance product of 1.03 Exabit/s.km

Koji Igarash, Takehiro Tsuritani, Itsuro Morita, Yukihiro Tsuchida, Koichi Maeda, Masateru Tadakuma, Tsunetoshi Saito, Kengo Watanabe, Katsunori Imamura, Ryuichi Sugizaki, Masatoshi Suzuki

研究成果: Article査読

69 被引用数 (Scopus)

抄録

We show super-Nyquist-WDM transmission technique, where optical signals with duobinary-pulse shaping can be wavelengthmultiplexed with frequency spacing of below baudrate. Duobinary-pulse shaping can reduce the signal bandwidth to be a half of baudrate while controlling inter-symbol interference can be compensated by the maximum likelihood sequence estimation in a receiver. First, we experimentally evaluate crosstalk characteristics as a function of channel spacing between the dual-channel DP-QPSK signals with duobinary-pulse shaping. As a result, the crosstalk penalty can be almost negligible as far as the ratio of baudrate to frequency spacing is maintained to be less than 1.20. Next, we demonstrate 140.7-Tbit/s, 7,326-km transmission of 7 × 201-channel 25- GHz-spaced super-Nyquist-WDM 100-Gbit/s optical signals using sevencore fiber and full C-band seven-core EDFAs. To the best of our knowledge, this is one of the first reports of high-capacity transmission experiments with capacity-distance product in excess of 1 Exabit/s.km.

本文言語English
ページ(範囲)1220-1228
ページ数9
ジャーナルOptics Express
22
2
DOI
出版ステータスPublished - 2014 1月 27
外部発表はい

ASJC Scopus subject areas

  • 原子分子物理学および光学

フィンガープリント

「Super-Nyquist-WDM transmission over 7,326-km seven-core fiber with capacity-distance product of 1.03 Exabit/s.km」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル