ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,493,148, issued on Dec. 9, was assigned to KYOCERA Corp. (Kyoto, Japan).
"Optical integrated circuit" was invented by Reona Motoji (Tokyo), Tomoya Sugita (Machida, Japan) and Dan Maeda (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical integrated circuit includes a substrate including a substrate surface, a first waveguide and a second waveguide configured to allow electromagnetic waves to propagate along the substrate surface, and a non-reciprocal member disposed on a side of the first waveguide and the second waveguide remote from the substrate surface. At least part of the non-reciprocal member is disposed in a range of a mode ...