ALEXANDRIA, Va., Aug. 20 -- United States Patent no. 12,393,044, issued on Aug. 19, was assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD. (Hsinchu, Taiwan).
"Vertical grating filters for photonics" was invented by Tai-Chun Huang (New Taipei, Taiwan) and Stefan Rusu (Sunnyvale, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A photonic vertical grating filter is disclosed. The filter comprises a first waveguide, a second waveguide, and a plurality of Bragg gratings. The Bragg gratings are formed in a dielectric layer between the first waveguide and the second waveguide, and are located in a vertical overlap region between the first waveguide and the second waveguide. Each Bragg grating has a d...