A New Paradigm in Chaotic Ray Scattering
  We introduce a new paradigm of 2D (electromagnetic) ray-chaos, featuring both guided and scattered rays in a dielectric layer with exponentially tapered refraction index backed by an undulated conductive surface, and illustrate its relevant features. Numerical simulations of the corresponding full-wave solution indicate that the system complies with Berry's conjecture in the asymptotic short wavelength limit. 
G. Castaldi, V. Fiumara, V. Galdi, V. Pierro, I.M. Pinto