| Texto completo | |
| Autor(es): |
Ospina, Ruby S. B.
;
van den Hout, Menno
;
van der Heide, Sjoerd
;
van Weerdenburg, John
;
Ryf, Roland
;
Fontaine, Nicolas K.
;
Chen, Haoshuo
;
Amezcua-Correa, Rodrigo
;
Okonkwo, Chigo
;
Mello, Darli A. A.
Número total de Autores: 10
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Lightwave Technology; v. 40, n. 15, p. 10-pg., 2022-08-01. |
| Resumo | |
The increase in capacity provided by coupled space division multiplexing (SDM) systems is fundamentally limited by mode-dependent gain (MDG) and amplified spontaneous emission (ASE) noise. Therefore, monitoring MDG and optical signalto-noise ratio (SNR) is essential for accurate performance evaluation and troubleshooting. Recent works show that the conventional MDG estimation method based on the transfer matrix of multipleinput multiple-output(MIMO) equalizers optimizing the minimum mean square error (MMSE) underestimates the actual value at low SNRs. Besides, estimating the optical SNR itself is not a trivial task in SDM systems, as MDG strongly influences the electrical SNR after the equalizer. In a recent work we propose an MDG and SNR estimation method using artificial neural networks (ANNs). The proposed ANN-based method processes features extracted at the receiver after digital signal processing (DSP). In this paper, we discuss the ANN-based method in detail, and validate it in an experimental 73-km 3-mode transmission link with controlled MDG and SNR. After validation, we apply the method in a case study consisting of an experimental long-haul 6-mode link. The results show that the ANN estimates both MDG and SNR with high accuracy, outperforming conventional methods. (AU) | |
| Processo FAPESP: | 17/25537-8 - Modulação com adaptação à distância em sistemas ópticos com multiplexação por divisão espacial |
| Beneficiário: | Ruby Stella Bravo Ospina |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |
| Processo FAPESP: | 18/25414-6 - Estimação de Canal em Sistemas Ópticos com Multiplexação por Divisão Espacial |
| Beneficiário: | Ruby Stella Bravo Ospina |
| Modalidade de apoio: | Bolsas no Exterior - Estágio de Pesquisa - Doutorado |
| Processo FAPESP: | 15/24341-7 - Novas estratégias para enfrentar a ameaça de exaustão da capacidade |
| Beneficiário: | Helio Waldman |
| Modalidade de apoio: | Auxílio à Pesquisa - Temático |
| Processo FAPESP: | 18/14026-5 - Projeto e otimização de enlaces ópticos submarinos usando multiplexação por divisão espacial |
| Beneficiário: | Darli Augusto de Arruda Mello |
| Modalidade de apoio: | Bolsas no Exterior - Pesquisa |