Abstract
Light propagation in one-dimensional photonic lattice is numerically analyzed. Two linear or nonlinear different widths asymmetric defects separated by a waveguide are located within the linear or nonlinear photonic lattice. We have found various types of localized modes located at the asymmetric defect position and at the waveguide between asymmetric defects. The results are compared with the ones obtained for light propagation in the system with the appropriate symmetric defects located within the linear or nonlinear photonic lattice.
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