Defect modes in one-dimensional photonic lattices

Abstract

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 appear when the lattice intensity at the defect site is {\em non-zero} 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.

4 pages, 4 figures

References in corpus (4)

• Spatial Solitons in Optically-Induced Gratings
• Discrete solitons and soliton-induced dislocations in partially-coherent photonic lattices
• Rotary solitons in Bessel photonic lattices
• Nonlinear localized waves in a periodic medium

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• Discrete solitons in self-defocusing systems with $\mathcal{P}\mathcal{T}$-symmetric defects
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• Optical Solitons in a Trinal-channel Inverted Nonlinear Photonic Crystal
• Discretized optical dynamics in one-dimensionally synthetic photonic lattice
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• Defect solitons in defective PT potentials with real part of dual-frequency lattices