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Abstract
Neste trabalho são estudadas configurações de amplificadores híbridos constituídos por amplificador Raman em cascata com Erbium Doped Fiber Amplifier (EDFA) (Amplificador com fibra dopada com Érbio) com reciclagem de bombeamento residual Raman, a serem utilizados na expansão da capacidade de sistemas de comunicações óticas utilizando Wavelength Division Multiplexing (WDM) (Multiplexação por Divisão de Comprimento de Onda. Foi realizada), mediante simulação utilizando pacote comercial, análise do desempenho de diferentes configurações de amplificadores híbridos Raman+EDFA, em termos do ganho global e ondulação (ripple - variação do ganho dos canais de entrada). A flexibilidade do perfil espectral do amplificador Raman pode ser combinada com a alta capacidade de potência de saída do EDFA para obter amplificadores híbridos com banda larga. Este trabalho aplica a técnica de otimização de lasers de bombeamento de amplificadores Raman aplicada em amplificadores híbridos Raman+EDFA para aplicações em sistemas WDM. Os resultados preliminares demonstram que o amplificador híbrido Raman+EDFA com reciclagem de bombeamento residual Raman combinado com uma seleção apropriada de potências e comprimentos de onda dos lasers de bombeamento Raman, possibilita a obtenção de amplificadores híbridos banda larga com maior eficiência de conversão de potência, ganho alto e plano.
Palavras-chave: Amplificadores Raman. EDFA. Amplificadores híbridos. Bombeamento residual. WDM.
Gain ripple analysis on hybrid amplifiers with recycled pump
AbstractIn this work different configurations of hybrid amplifiers are studied, made by a Raman amplifier followed by an EDFA. Such amplifiers can be used to increase the transmission capacity in optical communication systems. The performance of different hybrid EDFA+Raman amplifiers is obtained using commercial software. Their performance is analyzed in terms of the global gain and ripple. The flexibility of the Raman amplifier spectral profile combined with high capacity output power for EDFA provides broadband hybrid amplifiers. This paper uses the technique of optimizing lasers pumped Raman amplifiers applied in hybrid amplifiers for applications in Wavelength Division Multiplexing (WDM) systems. Preliminary results demonstrated that the Raman+EDFA hybrid amplifier under recycling residual Raman pump, allied with the proper selection of pump wavelengths and powers, enables the construction of broadband amplifiers with enhanced power conversion efficiency and high and flat gains.
Keywords: Raman amplifier. EDFA. Hybrid amplifiers. Pump recycling. WDM.
References
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