Semiconductor optical amplifier space switch BER improvement and guard-time reduction through feed-forward filtering

Autor(es)

Taglietti, Bruno ^[1] ; Sutili, Tiago ^[1] ; Figueiredo, Rafael C. ^{[1, 2]} ; Ferrari, Rafael ^[1] ; Conforti, Evandro ^[1]

Afiliação do(s) autor(es)

^[1] Univ Estadual Campinas, Sch Elect & Comp Engn, Campinas, SP - Brazil

^[2] CPqD Fdn, Opt Technol Div, Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Optics Communications; v. 426, p. 295-301, NOV 1 2018.
• Citações Web of Science: 2

Resumo

Analysis of the guard-time interval impact on bit error rate (BER) of a linear SOA-based space switch aiming the guard-time reduction is presented, including effects of fiber propagation. The characterization employed feed-forward filtering and optical switching techniques, through several types and lengths of fibers (with and without dispersion compensation). The Wiener filter (with 2 taps) consistently showed a switching performance improvement, with a guard-time (GT) reduction enough to achieve the BER pre-FEC limit. In most configurations the average GT was of 429 ps (3 bits GT at 7 Gbps). The overall best GT result achieved was using 100 mA of SOA bias current and applying the Wiener Filter, resulting in a GT of 286 ps (2 bits GT at 7 Gbps). The space-switch operating parameters with focus on the bias current and switching technique configuration were also analyzed, aiming at reducing the SOA-based electro-optical space switch guard-time, allowing the achievement of high commutation rates. (AU)

• Processo FAPESP: 07/56024-4 - Tecnologias ópticas coerentes
• Beneficiário: Evandro Conforti
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• Beneficiário: Tiago Sutili
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• Processo FAPESP: 17/20121-8 - Tecnologias Fotônicas com Processamento Analógico/Digital Ultrarrápido por Micro-ondas
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