%0 Conference Paper %F Oral %T The Fourier Modal Method simplified for crossed subwavelength gratings B. Guizal %+ Université de Montpellier (UM) %+ Laboratoire Charles Coulomb (L2C) %A Guizal, Brahim %F Invité %< sans comité de lecture %B META 2023 %C Paris, France %8 2023-07-18 %D 2023 %Z Physics [physics]Conference papers %X We present a simplification of the Fourier Modal Method (FMM) for crossed gratings with subwavelength heights. We show that in this case it is possible to compute the scattering matrix of the structure without solving the eigenvalue problem which is the most expensive computational part of the FMM algorithm. This approach is very efficient and thus suitable for periodic metasurfaces. %G English %L hal-04171737 %U https://hal.science/hal-04171737 %~ CNRS %~ L2C %~ UNIV-MONTPELLIER %~ UM-2015-2021 %~ UM-EPE