Generalized Analytical Solutions for Nonlinear Positive-Negative Index Couplers

Figure 4

Output power 𝑃₁(𝐿) as a function of input power 𝑃₁(0) when 𝜅=8,  𝛾₁=𝛾₂=−5 (self-defocusing nonlinearity). Solid black curve: 𝛿=0; dashed blue curve: 𝛿=10; dot-dashed red curve 𝛿=−10.