Figure 1
From: High efficiency dielectric photonic crystal fiber metalens

All-dielectric in-fiber metalens. (a) 2D schematic diagram of the metalens on a LMA-PCF. (b) Elements of the metalens. (c) Unit element of the metalens.
From: High efficiency dielectric photonic crystal fiber metalens
All-dielectric in-fiber metalens. (a) 2D schematic diagram of the metalens on a LMA-PCF. (b) Elements of the metalens. (c) Unit element of the metalens.