Abstract
We present a numerical model of an codoped fiber amplifier pumped with an laser for the first time to the best of our knowledge. The rate and power propagation equations are solved numerically, and the dependence of the gains at 1310, 1470, and windows on the active ion concentrations and fiber length are calculated. The results show that with pump power of , when concentrations are around , , and (), respectively, the signals at 1310, 1470, and windows may be equally amplified in the active fiber with a length of .
© 2009 Optical Society of America
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