Figure 7
(a) 16×16 3D waveguide design utilizing a routing algorithm that maintains the same photonic path lengths, the minimum radius of curvature, and the minimum inter-waveguide distance, (b) a photograph of the fabricated 16×16 3D waveguides observed at the output facet. (c) Magnified micrograph of a portion of the 256 input waveguides. 3D, three dimensional.
