US Patent Issued to Nippon Telegraph and Telephone on May 27 for "Wavelength cross connect device, multiband transmission system, and multiband transmission method" (Japanese Inventors)

ALEXANDRIA, Va., June 17 -- United States Patent no. 12,316,383, issued on May 27, was assigned to Nippon Telegraph and Telephone Corp. (Tokyo).

"Wavelength cross connect device, multiband transmission system, and multiband transmission method" was invented by Hiroki Kawahara (Musashino, Japan), Takeshi Seki (Musashino, Japan), Sachio Suda (Musashino, Japan) and Kohei Saito (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wavelength cross-connect device is formed by connecting a plurality of wavelength cross-connect devices in a ring-like form with WDM networks for each band of a plurality of bands on the input/output sides of the wavelength cross-connect devices, and includes a link wavele...