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Updated: Jun 17, 2026

Fabrication And Characterization Of Photonic Crystal Slow Light Waveguides And Cavities
Published on: November 30, 2012
Linear and nonlinear discrete light propagation in weakly modulated large-area two-dimensional photonic lattice slab
Xinyuan Qi1, Guoquan Zhang, Ningning Xu
1The MOE Key Laboratory of Weak Light Nonlinear Photonics, Nankai University, Tianjin 300457, China.
Abstract:
A weakly modulated large-area two-dimensional square photonic lattice slab was fabricated through optical induction technique in a photorefractive photovoltaic LiNbO(3):Fe crystal. Bragg-matched diffraction technique was used to characterize the square photonic lattice slab. Interestingly, linear discrete diffraction typical for waveguide arrays was observed in such a square photonic lattice slab, indicating that the lattice slab can be viewed effectively as a one-dimensional waveguide array. Furthermore, discrete soliton was demonstrated in the photonic lattice slab due to a saturable self-defocusing nonlinearity arising from the bulk photorefractive photovoltaic effect of LiNbO(3):Fe.
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