z-logo
open-access-imgOpen Access
Trans-Atlantic Field Trial Using High Spectral Efficiency Probabilistically Shaped 64-QAM and Single-Carrier Real-Time 250-Gb/s 16-QAM
Author(s) -
Junho Cho,
Xi Chen,
Sethumadhavan Chandrasekhar,
Gregory Raybon,
Ronen Dar,
Laurent Schmalen,
Ells Burrows,
Andrew Adamiecki,
Steve Corteselli,
Yan Pan,
Diego Correa,
Brad McKay,
Szilard Zsigmond,
Peter J. Winzer,
Steve Grubb
Publication year - 2018
Publication title -
journal of lightwave technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.346
H-Index - 200
eISSN - 1558-2213
pISSN - 0733-8724
DOI - 10.1109/jlt.2017.2776840
Subject(s) - communication, networking and broadcast technologies , photonics and electrooptics
We report the transmission of probabilistically shaped (PS) 64-ary quadrature amplitude modulation (QAM) at 7.46 b/s/Hz over a 5523-km in-service trans-Atlantic fiber-optic cable that consists of 65-89-km spans of Erbium-doped fiber amplifier only amplified fiber. Using a looped-back system configuration, we achieve 5.68 b/s/Hz over a trans-Pacific-equivalent distance of 11 046 km. Net spectral efficiencies are increased by 18% and 80% by using PS, at 5523 km and 11 046 km, respectively, compared to uniform square QAM. Throughout our experiments, we pay particular attention that our claims are backed by implementable forward error correction schemes. In addition, we demonstrate real-time coherent transmission of single-carrier 200 and 250-Gb/s uniform 8-QAM and 16-QAM at 4 b/s/Hz over the 5523-km cable.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.
Having issues? You can contact us here
Accelerating Research

Address

John Eccles House
Robert Robinson Avenue,
Oxford Science Park, Oxford
OX4 4GP, United Kingdom