US Patent Issued to NEC on Dec. 9 for "Wavelength multiplexing device and wavelength multiplexing method" (Japanese Inventor)

ALEXANDRIA, Va., Dec. 9 -- United States Patent no. 12,494,860, issued on Dec. 9, was assigned to NEC Corp. (Tokyo).

"Wavelength multiplexing device and wavelength multiplexing method" was invented by Takeshi Takemura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wavelength multiplexing device according to the present disclosure includes a wavelength multiplexer for causing input light inputted from a plurality of input ports for receiving optical signals to pass within a passband determined by a set center frequency and a set bandwidth, and outputting the light from an output port; an optical monitor for measuring optical power of the optical signals for each optical frequency and generating optic...