ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,493,204, 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 waveguide including a first part and a second part and configured to couple an electromagnetic wave propagating in the first part and an electromagnetic wave propagating in the second part; and a non-reciprocal member positioned alongside the second part in an amplitude direction of an electric field component of the electromagnetic wave. In a range where the first par...