US Patent Issued to Sumitomo Osaka Cement on March 25 for "Optical control element, optical modulation device using same, and optical transmission apparatus" (Japanese Inventors)

ALEXANDRIA, Va., March 26 -- United States Patent no. 12,259,631, issued on March 25, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical control element, optical modulation device using same, and optical transmission apparatus" was invented by Norikazu Miyazaki (Tokyo) and Yu Kataoka (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is an optical control element that can minimize an optical path difference between branched waveguides while reducing a difference in structure between the branched waveguides by disposing an input portion and an output portion of an optical waveguide on the same side of a substrate on which the optical waveguide is formed. An optical control element in...