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19 March 2012 Optimization in Raman+EDFA hybrid amplifiers for WDM systems
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Proceedings Volume 8257, Optical Components and Materials IX; 82570Z (2012)
Event: SPIE OPTO, 2012, San Francisco, California, United States
An approximated technique to optimize the gain profile of multi-pump broadband hybrid amplifiers (EDFA+Raman) under residual pump recycling is applied to a WDM system. The optimization has been focused on the global gain and its ripple factor for the hybrid amplifier. The EDFA spectral gain profile is the one to be compensated by the Raman amplification. The results of gain, ripple and noise figure for 8, 16, 32, 64 and 128 WDM input channels, with - 20 dBm each, are presented. The increase in the level of input power reduces the overall gain of the amplifier, but the profile remains unchanged. The performance of this configuration presented better results that means high gain, lower ripple, and higher bandwidth than those found in the literature.
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Márcia M. Jardim Martini, Carlos Eduardo S. Castellani, Maria José Pontes, Moisés R. N. Ribeiro, and Hypolito José Kalinowski "Optimization in Raman+EDFA hybrid amplifiers for WDM systems", Proc. SPIE 8257, Optical Components and Materials IX, 82570Z (19 March 2012);

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