Ultra-Long-Haul High-Capacity Super-Nyquist-WDM Transmission Experiment Using Multi-Core Fibers

Author

Igarashi, Koji ; Tsuritani, Takehiro ; Morita, Itsuro ; Suzuki, Masatoshi

Author_Institution

KDDI R&D Labs., Inc., Fujimino, Japan

Volume

33

Issue

5

fYear

2015

fDate

March1, 1 2015

Firstpage

1027

Lastpage

1036

Abstract

This paper describes promising techniques for approaching the capacity-distance product over 1 Exabit/s×km in the transoceanic-class optical fiber transmission. One is the Super-Nyquist wavelength-division multiplexing (WDM) technique based on poly-binary-pulse shaping with maximum likelihood sequence estimation, in which it is possible to multiplex optical signals with WDM spacing of less than the signal baudrate. Another technique is the space-division multiplexing technique based on multi-core fibers (MCFs) with multi-core Erbium-doped fiber amplifiers (EDFAs), in which the fiber capacity can be increased when the number of cores of MCF is increased. Finally, we present a demonstration of 140.7-Tbit/s, 7 326-km transmission of 201-channel 25-GHz-spaced Super-Nyquist-WDM 100-Gbit/s optical signals using seven-core fibers and full C-band seven-core EDFAs.

Keywords

maximum likelihood estimation; optical fibre communication; space division multiplexing; wavelength division multiplexing; C-band seven-core EDFA; WDM spacing; bit rate 1 Ebit/s; bit rate 100 Gbit/s; bit rate 140.7 Tbit/s; capacity-distance product; distance 326 km; frequency 25 GHz; multicore erbium-doped fiber amplifiers; multicore fibers; multiplex optical signals; space-division multiplexing technique; super-Nyquist wavelength-division multiplexing technique; transoceanic-class optical fiber transmission; ultra-long-haul high-capacity super-Nyquist-WDM transmission; Crosstalk; Maximum likelihood estimation; Optical fiber amplifiers; Optical fiber devices; Pulse shaping methods; Wavelength division multiplexing; Long-haul transmission; long-haul transmission; space-division multiplexing; wavelength-division multiplexing;

fLanguage

English

Journal_Title

Lightwave Technology, Journal of

Publisher

ieee

ISSN

0733-8724

Type

jour

DOI

10.1109/JLT.2015.2396902

Filename

7031883