A correction method for the analytical model in Raman amplifiers systems based on energy conservation assumption

• Main Authors: Thiago V. N. Coelho, A. Bessa dos Santos, Marco A. Jucá, Luiz C. C. Jr, Maria J. Pontes, Andres P. L.Barbero
• Format: Article
• Language: English
• Published: Sociedade Brasileira de Microondas e Optoeletrônica; Sociedade Brasileira de Eletromagnetismo
• Series: Journal of Microwaves, Optoelectronics and Electromagnetic Applications
• Subjects: Raman amplifier; numerical model; analytical model; energy conservation
• Online Access: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S2179-10742016000300198&lng=en&tlng=en
• ISSN: 2179-1074

Abstract This paper presents a modification for the already consolidated analytical model that calculates the gain and ripple in multi-pump Raman amplifiers by considering energy conservation. The original analytical model precisely computes the pump-pump interaction to the C- and L-band for a WDM input signal. However, when this method is used to amplify a large bandwidth, as the entire C and a part of the L band, the increase in the number of pump lasers impacts the obtained results. The error, if compared with results obtained by a numerical method, becomes significant. An analysis in terms of energy is proposed to minimize the discrepancy between analytical and numerical results. An improvement is observed to the gain results.