Floquet's Unit Cell Design for Periodic Structures at Optical Frequencies
Figure 4
Brillouin diagram for 3D GaAs periodic structures with air holes and different periodicity along the - and -axis. (a) 3D periodic structure; (b) Brillouin diagram: the dashed line represents the set of operating points at working wavelength ām; plot A refers to the waveguide with core thickness ; plot B refers to the waveguide with core thickness .