ALEXANDRIA, Va., Feb. 11 -- United States Patent no. 12,549,271, issued on Feb. 10, was assigned to NEC Corp. (Tokyo).
"Transmission device, optical transmission system, and optical transmission method" was invented by Yuushi Matsuo (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "To provide an optical transport device that enable the strengths of optical signals to be recovered when the strengths of the optical signals vary, an optical transmission device comprises: a wavelength selection switch that attenuates, in accordance with an attenuation amount, each of a plurality of optical signals outputted from a plurality of optical transmitter, multiplexes and outputs the attenuated optical signals; and a...