Abstract
Transverse beam dynamics in a nonlinear photonic crystal fiber is studied numerically. The field decomposition in terms of Laguerre-Gaussian functions is used to simulate the propagation of a beam along the fiber. Symmetry breakdown due to the competition of transverse modes is demonstrated. Both the few-mode photonic crystal fiber and the endlessly single-mode photonic-crystal fiber are considered. In the photonic crystal fiber with broad gain region, the resulting beam structure is shown to depend strongly upon the initial conditions.
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Konyukhov, A.I., Melnikov, L.A. Formation of transverse structure of CW light beams in photonic crystal fibers with saturable gain. Laser Phys. 16, 1068–1077 (2006). https://doi.org/10.1134/S1054660X06070085
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DOI: https://doi.org/10.1134/S1054660X06070085