US Patent Issued to NTT on Nov. 18 for "Optical communication apparatus, optical communication system and optical communication method" (Japanese Inventor)

ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,477,255, issued on Nov. 18, was assigned to NTT Inc. (Tokyo).

"Optical communication apparatus, optical communication system and optical communication method" was invented by Manabu Yoshino (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "An optical communication device includes an optical switch that outputs an optical signal input from one of a plurality of transmission lines to another transmission line among the plurality of transmission lines, a communication unit that communicates with a subscriber device without using the optical switch, a wavelength controller that sets a wavelength to be used for communication of an optical sign...