Fig. 6
From: Effect of waveguide wall roughness on quantum signal transmission
(a) and (b) are the core-cladding interface with a saw tooth shape at the up and down boundaries. The maximum value of roughness is 25 nm (c), as shown by the variation of probabilities obtained from coupled mode equations. (d) The variation of probabilities obtained by FEM. (e) 2-dimensional view of wave propagation.
