Fig. 4: Record-efficient all-optical switch with a subwavelength thickness.
From: Mimicking bio-mechanical principles in photonic metamaterials for giant broadband nonlinearity
a Concept of the functionality of metasurface type all-optical switch with staggered-array metamaterial (SAMM). Two-dimensional optical computation (e.g., AND operation) can be performed. A cross sectional view is also shown (not drawn to scale). b Intensity-dependent reflection is shown for a designed nonlinear reflector. Temporal profile of the input and output pulses are shown in the inset. c Dependence of the modulation depth on the lateral miss-alignment between two metallic layers. The input pulse energy is fixed at 380 fJ.
