ALEXANDRIA, Va., March 17 -- United States Patent no. 12,580,658, issued on March 17, was assigned to Fujitsu Ltd. (Kawasaki, Japan).
"Optical reception device and optical transmission and reception device" was invented by Tomoyuki Akiyama (Yokohama, Japan).
According to the abstract* released by the U.S. Patent & Trademark Office: "An optical reception device includes: an optical demultiplexer that has an input port and output ports, and configured to demultiplex a wavelength-multiplexed signal light input from the input port into a signal light for each wavelength and output the signal light from each of the output ports; a multi-wavelength light output circuit configured to output a wavelength light for each wavelength included in the ...