US Patent Issued to Sumitomo Osaka Cement on Sept. 23 for "Optical waveguide element, and optical modulation device and optical transmission apparatus using same" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 23 -- United States Patent no. 12,422,628, issued on Sept. 23, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical waveguide element, and optical modulation device and optical transmission apparatus using same" was invented by Shotaro Hirata (Tokyo), Shingo Takano (Tokyo) and Yu Kataoka (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical waveguide element that suppresses insertion loss related to coupling to an optical fiber or the like while miniaturizing the optical waveguide element is provided. There is provided an optical waveguide element including: a rib optical waveguide (10) that is made of a material (1) having an electro-optic effect; and the reinfo...