Transmission of a 20 Gb/s NRZ OOK signal throughout a 390 km fiber link and a cascade of 11 x 50 GHz filters and 9 x EDFAs

Autor: Daniel M. Pataca, Julio C. R. F. Oliveira, Antonio A. Juriollo, Adolfo F. Herbster, Mônica de Lacerda Rocha

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 10, Iss 1, Pp 143-154

This paper presents a qualitative analysis of the impact caused by fiber propagation effects and by a cascade of optical filters, designed for 10 Gb/s NRZ OOK transmission, and optical amplifiers on a 20 Gb/s NRZ OOK optical signal traveling a 390 km

Externí odkaz: https://doaj.org/article/2930d71c600a4986b8e1377526fcc475

Application of Machine Learning Techniques for Amplitude and Phase Noise Characterization

Autor: Neil Guerrero Gonzalez, Andy Doberstein, Júlio César Medeiros Diniz, Darko Zibar, Idelfonso Tafur Monroy, Jose Estaran, Carolina Franciscangelis, Julio C. R. F. Oliveira, Hansjoerg Haisch, Bernd Nebendahl, Molly Piels, Luis H. H. Carvalho

Publikováno v: Journal of Lightwave Technology. 33:1333-1343

In this paper, tools from machine learning community, such as Bayesian filtering and expectation maximization parameter estimation, are presented and employed for laser amplitude and phase noise characterization. We show that phase noise estimation b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f58e35e918b7606dd52d14d28cdff84f
https://doi.org/10.1109/jlt.2015.2394808

Joint Iterative Carrier Synchronization and Signal Detection Employing Expectation Maximization

Autor: Mikkel N. Schmidt, Carolina Franciscangelis, Luis H. H. Carvalho, Vitor Ribeiro, Edson Porto da Silva, Jose Estaran, Julio C. R. F. Oliveira, Ole Winther, Robert Borkowski, Darko Zibar, Idelfonso Tafur Monroy

Publikováno v: Journal of Lightwave Technology. 32:1608-1615

In this paper, joint estimation of carrier frequency, phase, signal means and noise variance, in a maximum likelihood sense, is performed iteratively by employing expectation maximization. The parameter estimation is soft decision driven and allows j

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::10b9c103983842c8028d7a1726046bf9
https://doi.org/10.1109/jlt.2014.2308636

Hybrid distributed Raman/EDFA amplifier with hybrid automatic gain control for reconfigurable WDM optical networks

Autor: Murilo A. Romero, Julio C. R. F. Oliveira, Juliano R. F. Oliveira, Uiara Celine de Moura

Publikováno v: Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Volume: 12, Issue: 2, Pages: 602-616, Published: DEC 2013
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 12, Iss 2, Pp 602-616
Journal of Microwaves, Optoelectronics and Electromagnetic Applications v.12 n.2 2013
Journal of Microwaves. Optoelectronics and Electromagnetic Applications
Sociedade Brasileira de Microondas e Optoeletrônica (SBMO)
instacron:SBMO

Nowadays, optical amplifiers designs are induced by new requirements generated by optical networks. The introduction of WDM reconfigurable networks with increasing rate from 10-40 Gb/s to 100 Gb/s and beyond, demand new optical amplifiers development

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::556f4fa5067e77f33ffa6abe97644b28
https://doi.org/10.1590/s2179-10742013000200028

Performance against implementation of digital backpropagation for high‐speed coherent optical systems

Autor: Luis H. H. Carvalho, E.P.L. Filho, Fábio Donati Simões, Victor E. Parahyba, Juliano R. F. Oliveira, Eduardo O. Schneider, Stenio M. Ranzini, Júlio César Medeiros Diniz, Julio C. R. F. Oliveira, Jacklyn D. Reis, Eduardo De Souza Rosa

Publikováno v: Electronics Letters. 51:1094-1096

The trade-off between transmission performance and hardware implementation in application-specific integrated circuits of digital backpropagation (DBP) in coherent 32 GBd polarisation-division multiplexing 16 quadrature amplitude modulation is analys

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::83533cea31f3f8aa0066562ad351945a
https://doi.org/10.1049/el.2015.0576