ALEXANDRIA, Va., Sept. 30 -- United States Patent no. 12,429,718, issued on Sept. 30, was assigned to MARVELL ASIA PTE LTD (Singapore).

"Ultra-high bandwidth multi-junction silicon optical modulator" was invented by Samira Karimelahi (Los Gatos, Calif.) and Masaki Kato (Palo Alto, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical modulator includes a substrate defining a plane and first, second, and third PN junctions formed on the substrate. The first PN junction is formed on the substrate by a first region doped with a p-type doping abutting a second region doped with an n-type doping. The second PN junction is formed on the substrate adjacent to the second region of the first PN junction. T...