US Patent Issued to NOKIA SOLUTIONS AND NETWORKS on July 21 for "Comb-based wavelength division multiplexing" (Finnish Inventor)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,689,458, issued on July 21, was assigned to NOKIA SOLUTIONS AND NETWORKS OY (Espoo, Finland).

"Comb-based wavelength division multiplexing" was invented by Di Che (Espoo, Finland).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical transmitter capable of colorless WDM includes a source of optical frequency comb (OFC) light having a plurality of separate optical frequency tones, and a plurality of optical modulators connected in parallel to modulate different parts of the OFC light with corresponding modulating signals, each of the parts including the plurality of separate optical frequency tones. An optical combiner combines the different parts of ...