Ensemble-averaged intensity profiles (on a logarithmic scale) at the lattice output, for the 60% disorder level in: defocusing (the first row), linear (the second row) and focusing (the third row) regimes

Figure 4. Ensemble-averaged intensity profiles (on a logarithmic scale) at the lattice output, for the 60% disorder level in: defocusing (the first row), linear (the second row) and focusing (the third row) regimes. Localized profiles for the lattice site excitation in the first row of the square (the first column) and hexagonal (the second column) lattices. Parameters are as in figure 3.

Abstract

The Anderson localization of light at the interface separating square and hexagonal photonic lattices is demonstrated numerically. The influence of varying lattice intensities and disorder level on the transverse localization of light is discussed. Both suppression and enhancement of light localization in the presence of the interface, depending on the difference in the lattice intensity in both regions, and the position of the excited lattice site are demonstrated. Such localization is compared to the cases with no interfaces. Also, it is analysed how the presence of a phase-slip defect modifies the phenomenon of Anderson localization of light at the interface.