Photonic guiding device
View Patent ↗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.
1. A method for making a photonic guiding system for directing coherent light, comprising:
forming a channel in a substrate to form a waveguide configured to interconnect electronic circuitry on a circuit board, wherein the channel has at least one of a width and a height that is substantially larger than a wavelength of the coherent light;
applying a layer of a reflective material to substantially cover an interior of the channel;
coupling a cover over the channel to form a large core hollow waveguide, wherein the cover includes a layer of the reflective material;
attaching a protective layer that is substantially transparent at the wavelength of the coherent light directly on the layer of reflective material to form a substantially air tight bond over the reflective material to substantially reduce oxidation of the reflective material; and
optically coupling a collimating lens to the large core hollow waveguide to enable multiple modes of multi-mode coherent light to be directed substantially in parallel through the waveguide.
2. A method as in claim 1 , wherein coupling the cover over the channel further comprises bonding the cover to the substrate to form the large core hollow waveguide.
3. A method as in claim 1 , wherein coupling the cover over the channel further comprises laminating the cover to the substrate to form the large core hollow waveguide.
4. A method as in claim 1 , wherein forming the channel further comprises forming a channel using at least one of molding, etching and stamping the substrate.
5. A method as in claim 1 , wherein forming the channel further comprises forming the channel wherein at least one of the width and the height of the channel is greater than fifty times the wavelength of the coherent light.