US Patent Issued to NTT on July 14 for "Wavelength cross connect device, and wavelength cross connect method" (Japanese Inventors)

ALEXANDRIA, Va., July 14 -- United States Patent no. 12,684,272, issued on July 14, was assigned to NTT Inc. (Tokyo).

"Wavelength cross connect device, and wavelength cross connect method" was invented by Hiroki Kawahara (Musashino, Japan), Masahiro Nakagawa (Musashino, Japan) and Takeshi Seki (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wavelength cross connect device includes: a WXC unit including input-side WSSes and Output-side WSSes; and a wavelength band switching unit. Of wavelength multiplexed signal beams N-split by each input-side WSS, wavelength multiplexed signal beams in which optical signals for which wavelength band conversion is not necessary are multiplexed are input to...