A hybrid finite element/rigorous coupled wave analysis for electromagnetic scattering from periodic structures

Fast hybrid method for modeling scattering from doubly periodic dielectric structure in 3-D

“…4. Reflection coefficient |R 00 | for TM polarized plan wave reflected from a dielectric slab ( r = 4) with periodically embedded material ( r = 10) compared with [7], [10].…”

“…4, our results are in good agreement of other welldocumented reference data. The second example is a doubly periodic dielectric sphere ( r = 12) in free space, presented previously in [10]. The dimension of the unit cell measures d×d×0.4d, as shown in Fig.…”

“…We choose both L and K to be 5 for better convergence. A comparison between proposed method and FE/RCWA method [10] is presented in Fig. 6.…”

“…6. Transmission coefficient |T 00 | for TE plan wave is compared with [10]. The incident angle is θ inc = 0 • , φ inc = 90 • .…”

“…To overcome these limitations, a hybrid method based on the finite element method and RCWA was developed [10] for modeling 3-D doubly periodic grating structures. The perfectly matched layer (PML) [11] was used for the upper and lower boundary truncation.…”