ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,917, issued on July 1, was assigned to PHIX B.V. (Enschede, Netherlands).

"Optical integrated circuit" was invented by Jeroen Antonius Maria Duis (Enschede, Netherlands) and Johannes Cornelis Van Kerkhof (Enschede, Netherlands).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical integrated circuit includes a substrate, at least one open cavity provided in said substrate, at least one set of optical waveguides for each open cavity, each set including a first optical waveguide and a second optical waveguide. The first and second optical waveguides are arranged in the substrate and include a first end facet ending in the open cavity of that set, an...