ALEXANDRIA, Va., Oct. 21 -- United States Patent no. 12,771,451, issued on Oct. 20, was assigned to NEC Corp. (Tokyo).
"Light multiplexing/demultiplexing device and light multiplexing/demultiplexing method" was invented by Ryota Abe (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "The light multiplexing/demultiplexing device comprises: a first demultiplexer that demultiplexes an inputted first wavelength-multiplexed signal light into a first signal light of a first wavelength band a second signal light of a second wavelength band outputs the first and the second signal light; a first amplifier that amplifies the second signal light from the first demultiplexer; a light processor that, based on the input...