US Patent Issued to FUJITSU OPTICAL COMPONENTS on May 27 for "Optical integrated device, optical integrated circuit wafer, and method of manufacturing the optical integrated device" (Japanese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,313,880, issued on May 27, was assigned to FUJITSU OPTICAL COMPONENTS Ltd. (Kawasaki, Japan).

"Optical integrated device, optical integrated circuit wafer, and method of manufacturing the optical integrated device" was invented by Tatsuya Ito (Yokohama, Japan) and Takeshi Matsumoto (Ebina, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical integrated device includes a substrate and a waveguide that has a hollow structure. The waveguide includes a first waveguide and a second waveguide that is optically coupled to the first waveguide and that has a smaller relative refractive index difference than that of the first waveguide and converts a m...