ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,449,599, issued on Oct. 21, was assigned to GlobalFoundries U.S. Inc. (Malta, N.Y.).

"Directional couplers with heterogenous claddings" was invented by Yusheng Bian (Ballston Lake, N.Y.).

According to the abstract* released by the U.S. Patent & Trademark Office: "Structures for a directional coupler and methods of forming a structure for a directional coupler. The structure comprises a first waveguide core including a first plurality of segments, and a second waveguide core including a second plurality of segments disposed adjacent to the first plurality of segments in a coupling region. The structure further comprises a first cladding layer comprising a first material that has a fir...