US Patent Issued to HieFo on July 8 for "Semiconductor waveguide optical gain device with optical mode shaping" (California Inventor)

ALEXANDRIA, Va., July 9 -- United States Patent no. 12,355,211, issued on July 8, was assigned to HieFo Corp. (Alhambra, Calif.).

"Semiconductor waveguide optical gain device with optical mode shaping" was invented by Henry A. Blauvelt (San Marino, Calif.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor optical device includes n-doped, p-doped, and active layers, an optical waveguide structure, and drive current structure(s). The waveguide structure defines optical mode(s); the drive current structure defines a drive current path. One or both of those structures are arranged to result in a selected (or maximized) degree of overlap between lateral profiles of current density and optical intensit...