Computer modeling of the coherent optical amplifier and laser systems
ICCSA'07 Proceedings of the 2007 international conference on Computational science and its applications - Volume Part I
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The nonlinear dynamics of an erbium-doped fiber laser is explained based on a simple model of the ion pairs present in heavily doped fibers. The single-mode laser dynamics is reductible to four coupled nonlinear differential equations. Depending on the ion-pair concentration, the pumping level and the photon lifetime in the laser cavity, numerical calculations predict cw, self-pulsing and sinusoidal dynamics. The regions of these dynamics in the space of the laser parameters are determined.