solitons also exhibit an oscillatory instability close to the continuum limit, but a detailed
analysis ofthe discreteness-induced oscillatory instability has been performed only for
dark solitons of the discrete NLS equation [79] and for unbounded standing waves [83].
11.5 Experimental Results
As discussed earlier, the propagation of light in an array of coupled waveguides per-
mits control over diffraction, not normally possible in a bulk medium or in a single
waveguide. The reason behind this possibility is easily understood by noting that the
spreading of light in an array is governed by the extent ...
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