US Patent Issued to Sumitomo Osaka Cement on Dec. 16 for "Optical modulator and optical transmission apparatus" (Japanese Inventors)

ALEXANDRIA, Va., Dec. 16 -- United States Patent no. 12,498,612, issued on Dec. 16, was assigned to Sumitomo Osaka Cement Co. Ltd. (Tokyo).

"Optical modulator and optical transmission apparatus" was invented by Norikazu Miyazaki (Tokyo) and Toru Sugamata (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical modulator includes an optical waveguide device including an optical waveguide and a signal electrode for controlling a light wave propagating through the optical waveguide, a drive circuit that outputs two high-frequency signals, and two termination resistors for respectively terminating the two high-frequency signals, in which one high-frequency signal among the high-frequency signals output f...