A photonic guiding device and methods of making and using are disclosed.
The photonic guiding device comprises a large core hollow waveguide
configured to interconnect electronic circuitry on a circuit board. A
reflective coating covers an interior of the hollow waveguide to provide
a high reflectivity to enable light to be reflected from a surface of the
reflective coating. A collimator is configured to collimate multi-mode
coherent light directed into the hollow waveguide.