US Patent Issued to NEC on May 27 for "Optical signal monitoring device, and optical signal monitoring method" (Japanese Inventor)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,373, issued on May 27, was assigned to NEC Corp. (Tokyo).

"Optical signal monitoring device, and optical signal monitoring method" was invented by Takeshi Takemura (Tokyo).

According to the abstract* released by the U.S. Patent & Trademark Office: "Since safe utilization of an optical transmission system is impaired if a system is adopted in which a wavelength band is divided into sub-bands and a different user is allocated to each sub-band, the optical signal monitoring device of the present invention includes: an optical signal information generating means for monitoring wavelength multiplexed signal light comprising sub-band optical signals belonging to each of a plurality of ...