US Patent Issued to NEC, NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM on June 2 for "Wavelength conversion apparatus, optical transmission apparatus, and wavelength conversion method" (Japanese Inventors)

ALEXANDRIA, Va., June 2 -- United States Patent no. 12,647,703, issued on June 2, was assigned to NEC Corp. (Tokyo) and NATIONAL UNIVERSITY CORPORATION TOKAI NATIONAL HIGHER EDUCATION AND RESEARCH SYSTEM (Nagoya, Japan).

"Wavelength conversion apparatus, optical transmission apparatus, and wavelength conversion method" was invented by Shigeyuki Yanagimachi (Tokyo), Hiroshi Hasegawa (Aichi, Japan), Daisuke Saito (Aichi, Japan) and Yojiro Mori (Aichi, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A wavelength conversion apparatus includes: a first demultiplexer wavelength-separating an optical signal having wavelengths of a first band wavelength-multiplexed into n drop signals acquired by wavelength-mul...