Physics – Optics
Scientific paper
2012-03-23
Physics
Optics
3 pages, 3 figures, to appear in Optics Letters
Scientific paper
We predict that a photonic crystal fiber whose strands are filled with a defocusing nonlinear medium can support stable bright and also vortex solitons if the strength of the defocusing nonlinearity grows toward the periphery of the fiber. The domains of soliton existence depend on the transverse growth rate of the filling nonlinearity and nonlinearity of the core. Remarkably, solitons exist even when the core material is linear.
Borovkova Olga V.
Kartashov Yaroslav V.
Lobanov Valery E.
Malomed Boris A.
Torner Lluis
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