ALEXANDRIA, Va., Feb. 24 -- United States Patent no. 12,560,831, issued on Feb. 24, was assigned to Cisco Technology Inc. (San Jose, Calif.).

"Electro-optical modulator using waveguides with overlapping ridges" was invented by Donald Adams (San Jose, Calif.), Prakash B. Gothoskar (Allentown, Pa.), Vipulkumar Patel (Breinigsville, Pa.) and Mark Webster (Bethlehem, Pa.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical modulator may include a lower waveguide, an upper waveguide, and a dielectric layer disposed therebetween. When a voltage potential is created between the lower and upper waveguides, these layers form a silicon-insulator-silicon capacitor (also referred to as SISCAP) guide that provides e...