Figure 4
From: Controlling lightwave in Riemann space by merging geometrical optics with transformation optics
Simulation of bidirectional focusing effect. (a) Light path in the reference space. The pink plane represents the upper space, and the cyan triangle represents the interior of the mirrors of the lower space. Yellow line denotes the branch cut. Red line and blue line denote two rays with opposite incident directions. (b,d) Ray tracing simulation in the real space when light is incident onto our device from top and bottom, respectively. (c,e) Distribution of the square of electric field in the real space by full wave simulation when a Gaussian beam is incident onto our device from top and bottom, respectively.
