Stabilization of multi-beam necklace solitons in circular arrays with spatially modulated nonlinearity

Details Stabilization of multi-beam necklace solitons in circular arrays with spatially modulated nonlinearity Stabilization of multi-beam necklace solitons in circular arrays with spatially modulated nonlinearity

2009-10-15

arxiv.org/abs/0910.2926v1

Physical Review A 80, 053816 (2009)

Physics

Optics

13 pages, 4 figures, to appear in Physical Review A

Scientific paper

We address necklace solitons supported by circular waveguide arrays with out-of-phase modulation of nonlinearity and linear refractive index. Such two-dimensional necklace solitons appear as rings of multiple out-of-phase bright spots. We show that necklace solitons are stable if their peak intensity is low or moderate and that the domain of stability shrinks with increasing nonlinearity modulation depth. However, we find that the stability domains expand with increasing number of necklace spots.

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