Generation of nonlinear defect modes and discrete solitons centered at the defect
location (shown with a wavy line). The experimental (left column) and and numerical (right
column) results are shown for the attractive (top row) and repulsive (bottom row) cases. (After
Ref. [88]; (~)2001 OSA.)
width of a single waveguide was reduced compared with that of all other waveguides.
This "defect" reduces the effective mode index in that specific waveguide. At low pow-
ers, the defect waveguide supports linear guided waves in the Bragg-reflection regime
such that their profile resembles that of gap ...
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