Capacity-Achieving Probabilistic Constellation Shaping for Unamplified Coherent Links
Oliveira, B. M.
; Silva, J. H.
; Neves, M. S.
;
Guiomar, F. P.
;
Medeiros, M. C. R.
;
Monteiro, P.
Capacity-Achieving Probabilistic Constellation Shaping for Unamplified Coherent Links, Proc European Conference on Optical Communication ECOC, Glasgow, United Kingdom, Vol. , pp. - , October, 2023.
Digital Object Identifier: 10.1049/icp.2023.2574
Abstract
In unamplified coherent systems, the conventional use of Maxwell-Boltzmann (MB) in probabilistic constellation shaping is largely sub-optimal. We optimize the probability mass function for these systems, and experimentally show a link budget gain of 4.1 dB at 400 Gbps.
