Inverse design of grating coupler

Inversely design a silicon-on-insulator grating coupler using the built-in parametrized geometry optimization module (PO) for FDTD. Compared to other optimization methods such as particle swarm optimization (PSO), this optimization algorithm enables obtaining the best solution in just a few iterations. In this example, the etch depth will be fixed at Więcej…

Microwire polarizer

High-contrast polarization control devices composed of sub-wavelength metal gratings – nanowire grid polarizers – are replacing bulk optical elements. Nanowire grid polarizers offer improved extinction ratio contrast, minimal absorption to address high brightness illumination, and compact form factors to facilitate mass manufacture and integration within small optical assemblies.  However, nanowire Więcej…