US Patent Issued to Sumitomo Osaka Cement on July 14 for "Optical waveguide element, optical modulator, optical modulation module, and optical transmission device" (Japanese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,681,341, issued on July 14, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical waveguide element, optical modulator, optical modulation module, and optical transmission device" was invented by Norikazu Miyazaki (Tokyo) and Toru Sugamata (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "The optical absorption loss of the optical waveguide and the signal propagation loss of the high-frequency signal electrode are both reduced at a plurality of intersections between the convex optical waveguide and the high-frequency signal electrode, thereby achieving good operating characteristics. An optical waveguide device includes a substrate on whi...