ALEXANDRIA, Va., April 7 -- United States Patent no. 12,596,227, issued on April 7, was assigned to TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY LTD. (Hsinchu, Taiwan).
"Multi-layer waveguide optical coupler" 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: "An optical coupler includes: a plurality of waveguide core layers formed from a waveguide core material having a first index of refraction, the waveguide core layers being (i) arranged in a stacked relationship one over another, (ii) spaced apart one from another and (iii) extending from a light receiving end of the optical coupler longitudinally through the optical coupler...