Performance Analysis of PAM4 Signal Transmission in Inter-datacenter Multicore Fiber Links Impaired by Inter-Core Crosstalk

Rafael Dias, João Rebola, João Rebola, Adolfo Cartaxo, Adolfo Cartaxo

2021

Abstract

In this work, we propose to use four-level pulse amplitude modulation (PAM4) and multicore fibers (MCFs) to support very high capacity inter-datacenter connections. The limitations imposed by inter-core crosstalk (ICXT) on the performance of 112 Gb/s up to 80 km-long optically amplified PAM4 inter-datacenter links with intensity-modulation and direct-detection (IM-DD) and full chromatic dispersion compensation in the optical domain are analyzed through numerical simulation. We show that those PAM4 inter-datacenter links achieve an outage probability (OP) of 10−4 with a maximum ICXT level of -13.9 dB for high skew-symbol rate products and require an ICXT level decrease of about 8.1 dB to achieve the same OP for low skew-symbol rate products. Due to using full dispersion compensation, the OP is not much affected by increasing the MCF length, from 10 km, where electrical noise significantly contributes to the performance degradation, to 80 km, where signal-amplified spontaneous emission beat noise is dominant. For an OP of 10−4, the maximum acceptable ICXT level shows only a 1.4 dB variation with the MCF length increase.

Paper Citation

in Harvard Style

Dias R., Rebola J. and Cartaxo A. (2021). Performance Analysis of PAM4 Signal Transmission in Inter-datacenter Multicore Fiber Links Impaired by Inter-Core Crosstalk.In Proceedings of the 9th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS, ISBN 978-989-758-492-3, pages 94-103. DOI: 10.5220/0010321000940103

in Bibtex Style

@conference{photoptics21,
author={Rafael Dias and João Rebola and Adolfo Cartaxo},
title={Performance Analysis of PAM4 Signal Transmission in Inter-datacenter Multicore Fiber Links Impaired by Inter-Core Crosstalk},
booktitle={Proceedings of the 9th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,},
year={2021},
pages={94-103},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0010321000940103},
isbn={978-989-758-492-3},
}

in EndNote Style

TY - CONF

JO - Proceedings of the 9th International Conference on Photonics, Optics and Laser Technology - Volume 1: PHOTOPTICS,
TI - Performance Analysis of PAM4 Signal Transmission in Inter-datacenter Multicore Fiber Links Impaired by Inter-Core Crosstalk
SN - 978-989-758-492-3
AU - Dias R.
AU - Rebola J.
AU - Cartaxo A.
PY - 2021
SP - 94
EP - 103
DO - 10.5220/0010321000940103