ALEXANDRIA, Va., Aug. 12 -- United States Patent no. 12,386,116, issued on Aug. 12, was assigned to Sumitomo Electric Industries Ltd. (Osaka, Japan).
"Semiconductor optical device" was invented by Takuya Okimoto (Osaka, Japan) and Yoshihiro Yoneda (Osaka, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "A semiconductor optical device includes a substrate a spot-size converter, an optical detector, a core layer and a first III-V compound semiconductor layer, the core layer is disposed between the substrate and the first III-V compound semiconductor layer, the optical detector includes a light absorbing layer, a second III-V compound semiconductor layer, and an insulating film, the light absorbing layer is...