US Patent Issued to NTT on Oct. 14 for "Coherent optical reception device and coherent optical reception method" (Japanese Inventors)

ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,445,205, issued on Oct. 14, was assigned to NTT Inc. (Tokyo).

"Coherent optical reception device and coherent optical reception method" was invented by Ryo Igarashi (Musashino, Japan), Masamichi Fujiwara (Musashino, Japan) and Takuya Kanai (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A coherent optical reception device includes a coherent receiver that receives signal light in which an AMCC signal is superimposed on a main signal, converts the signal light into an analog electric signal, and outputs an in-phase component and a quadrature-phase component of a reception signal for each polarization state, and a polarization combiner th...