US Patent Issued to NEC on July 29 for "Optical amplifier, optical amplifier controlling method, and optical transmission system" (Japanese Inventors)

ALEXANDRIA, Va., July 30 -- United States Patent no. 12,375,201, issued on July 29, was assigned to NEC Corp. (Tokyo).

"Optical amplifier, optical amplifier controlling method, and optical transmission system" was invented by Keiichi Matsumoto (Tokyo), Hitoshi Takeshita (Tokyo), Hidemi Noguchi (Tokyo) and Emmanuel Le Taillandier de Gabory (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical amplifier that amplifies an incident WDM signal and includes cores having an amplification medium, the optical amplifier includes: a wavelength demultiplexer configured to demultiplex the incident WDM signal into wavelength bands and introducing the demultiplexed WDM signals into the cores separately; a wavele...