US Patent Issued to Sumitomo Osaka Cement on Sept. 1 for "Optical waveguide device, and optical modulation device and optical transmission apparatus using same" (Japanese Inventors)

ALEXANDRIA, Va., Sept. 1 -- United States Patent no. 12,724,300, issued on Sept. 1, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical waveguide device, and optical modulation device and optical transmission apparatus using same" was invented by Kosuke Okahashi (Tokyo) and Yu Kataoka (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An object of the present invention is to provide an optical waveguide device that suppresses optical absorption even in a case where an electrode clearance is narrow. An optical waveguide device of the present invention includes a substrate 1 on which an optical waveguide 10 is formed, and a control electrode 3 disposed close to the optical waveguide on the subs...