Ap. Lopez-barbero et He. Hernandez-figueroa, Efficient stationary model for erbium-doped optical amplifiers: Numerical and experimental comparisons, MICROW OPT, 23(5), 1999, pp. 261-263
An efficient model for erbium-doped optical amplifiers is presented in this
paper. This model, based on an iterative finite-element stationary (modal
analysis) scheme in conjunction with a suitable multilevel rate equations s
ystem, permits a direct computation of the complex propagation constant bet
a. In addition, the use of absorption/emission cross-section parameters per
mits the computation of the gain, related to Im{beta}, and induced nonlinea
rities, related to Re{beta}, over a wideband spectrum (1.40-1.65 mu m). Sin
ce up-conversion and cross-relaxation effects are taken into account, the m
odel is also able to analyze highly doped waveguides. Comparisons with othe
r approach and experimental data validate this model. (C) 1999 John Wiley &
Sons, Inc.