Figure 3
From: All-plasmonic Optical Phased Array Integrated on a Thin-film Platform

(a) Schematic showing the working mechanisms of the proposed POPA (not to scale). Light from a fiber is directly coupled into Nanostrip SPWs which act as a power relay which mediates power transfer from the fiber to nanopatches. (b and c) Schematics showing the unit cell design strategy on the yoz plane (b) and xoy plane (c). P x and P y represent the period in the x- and y- directions, respectively and D p in this figure denotes the distance between the nanostrip and its neighbouring nanopatch.