Inhibition of light tunneling for multichannel excitations in longitudinally modulated waveguide arrays

Details Inhibition of light tunneling for multichannel excitations in longitudinally modulated waveguide arrays Inhibition of light tunneling for multichannel excitations in longitudinally modulated waveguide arrays

2010-01-16

arxiv.org/abs/1001.2846v1

Physical Review A 81, 023803 (2010)

Physics

Optics

17 pages, 6 figures, to appear in Physical Review A

Scientific paper

We consider evolution of multichannel excitations in longitudinally modulated waveguide arrays where refractive index either oscillates out-of-phase in all neighboring waveguides or when it is modulated in phase in several central waveguides surrounded by out-of-phase oscillating neighbors. Both types of modulations allow resonant inhibition of light tunneling, but only the modulation of latter type conserves the internal structure of multichannel excitations. We show that parameter regions where light tunneling inhibition is possible depend on the symmetry and structure of multichannel excitations. Antisymmetric multichannel excitations are more robust than their symmetric counterparts and experience nonlinearity-induced delocalization at higher amplitudes.

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