US Patent Issued to NTT on July 21 for "Monitoring of relay node in optical transmission system" (Japanese Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,689,441, issued on July 21, was assigned to NTT Inc. (Tokyo).

"Monitoring of relay node in optical transmission system" was invented by Takeo Sasai (Musashino, Japan) and Masanori Nakamura (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An aspect of the present invention is an optical transmission system in which one or more optical transmitters and one or more optical receivers perform communication via an optical transmission path, the optical transmission path including a plurality of relay nodes including optical amplifiers that amplify optical signals, the one or more optical transmitters transmitting optical signals at a plurality...