Abstract

We reveal the critical behavior of the fundamental defect mode, which can be supported by an optical lattice with a local defect in the nonlocal nonlinear medium. In such a system, there are several system parameters, and it is found that whether the fundamental defect mode can locate in the defect or not depends on the parameter value higher or lower than its critical value. Furthermore, the critical values of these parameters are predicted in this article.

© 2013 Optical Society of America

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