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Opt Lett. 2005 Jun 15;30(12):1506-8.

Defect modes in one-dimensional photonic lattices.

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  • 1Department of Mathematics and Statistics, University of Vermont, Burlington, Vermont 05401, USA.


Linear defect modes in one-dimensional photonic lattices are studied theoretically. For negative (repulsive) defects, various localized defect modes are found. The strongest confinement of the defect modes appears when the lattice intensity at the defect site is nonzero rather than zero. When launched at small angles into such a defect site of the lattice, a Gaussian beam can be trapped and undergo snake oscillations under appropriate conditions.

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