Floquet's Unit Cell Design for Periodic Structures at Optical Frequencies
Figure 2
(a) Step discontinuity: junction between two dielectric slabs with core thicknesses and (longitudinal section of the unit cell shown in Figure 1(a)). (b) Simplified equivalent circuit for small step discontinuity and low dielectric contrast . (c) Variational equivalent circuit for a step discontinuity. (d) Example of variational equivalent circuit of a double step discontinuity with one guided mode in region I and two guided modes in region II.
