Nonlinearly induced escape from a defect state in waveguide arrays

U. Peschel*, R. Morandotti, J. S. Aitchison, H. S. Eisenberg, Y. Silberberg

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

109 Scopus citations


The linear and nonlinear optical properties of a nonuniform waveguide array are experimentally investigated. By reducing the width of a single waveguide, the effective index and induced waveguiding along the defect is decreased. Due to the positive nonlinearity, the index difference is reduced for increasing power levels with the result that the field escapes. Waveguiding is suppressed by the action of the nonlinearity.

Original languageAmerican English
Pages (from-to)1348-1350
Number of pages3
JournalApplied Physics Letters
Issue number10
StatePublished - 6 Sep 1999
Externally publishedYes


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