Figure 6
From: Highly-efficient three-dimensional waveguide couplers using impedance-tunable transformation optics
Normalized electric-field distribution (in x direction) for a 3-dimensional dielectric waveguide coupler. (a) Input-mode profile; (b) output-mode profile (for impedance non-tunable transformation); (c) output-mode profile (for impedance-tunable transformation); (d) plane with y = 0.
