US Patent Issued to Sumitomo Osaka Cement on June 16 for "Optical waveguide element, optical modulator, optical modulation module, and optical transmission device" (Japanese Inventors)

ALEXANDRIA, Va., June 16 -- United States Patent no. 12,656,654, issued on June 16, 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: "In an optical waveguide device having a plurality of intersections between a convex optical waveguide and a signal electrode, the occurrence of disturbance modulation at the intersections is effectively reduced, thereby achieving good operating characteristics. The optical waveguide device includes an optical waveguide composed of a protruding portion ex...