Nonlinear Coherent Directional Coupler: Coupled Mode Theory and BPM Simulation

Figure 4

(a) Field evolution at 0.1 W/m input power: BPM. (b) Power flow pattern, (line curve) computed from BPM shown left, (crossed points) coupled mode theory. (c) Field evolution at 70 W/m power: BPM. (d) Power flow pattern (line curve), computed from BPM shown left, (crossed points) coupled mode theory fitted. (e) Field evolution at 100 W/m power: BPM. (f) Power flow pattern, (line curve) computed from BPM shown left, (crossed points) coupled mode theory fitted.

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