US Patent Issued to HieFo on Oct. 28 for "Semiconductor waveguide optical gain device with lateral current confinement or optical mode shaping" (California Inventors)

ALEXANDRIA, Va., Oct. 28 -- United States Patent no. 12,456,849, issued on Oct. 28, was assigned to HieFo Corp. (Alhambra, Calif.).

"Semiconductor waveguide optical gain device with lateral current confinement or optical mode shaping" was invented by Henry A. Blauvelt (San Marino, Calif.) and Wei Hsin (Arcadia, 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 ...