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Article
Symmetric and antisymmetric nonlinear modes supported by dual local gain in lossy lattices
We introduce a discrete lossy system, into which a double “hot spot” (HS) is inserted, i.e., two mutually symmetric sites carrying linear gain and cubic nonlinearity. The system can be implemented as an array ...
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Article
Spatial solitons supported by localized gain in nonlinear optical waveguides
We introduce a modification of the complex Ginzburg-Landau (CGL) equation with background linear loss and locally applied gain. The equation appertains to laser cavities based on planar waveguides, and also to...