Abstract
A novel analytical approximated solution for the gain of broadband Raman
amplifiers with multiple counter-pump lasers is derived taking into account
pump-pump interactions. Validation against experimental data available in
the literature with two and three pumps is performed. In order to test the
limits of the approximated analytical solution, signal gain is numerically
obtained by simulation for Raman amplifiers built with different types of
fibers and covering bandwidths up to 100 nm. The results show that our analytical
solution presents a good agreement with both numerical and experimental results
in most of the practical situations. This allows the reduction of the computation
time in several orders of magnitude when optimizing such amplifiers.
© 2009 IEEE
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