Power-limiting action of optical waveguide having negative nonlinear claddings

In a three-layer slab optical waveguide with claddings having a negative nonlinear refractive index, power-limiting action along the propagation direction is investigated numerically. Light propagating behavior with power leak in the steady state propagation is demonstrated. Assuming a close-to-available material and structural parameters, a short waveguide structure of this kind is found capable of providing a sufficient power-limiting action.