US Patent Issued to NIPPON TELEGRAPH AND TELEPHONE on July 1 for "Phase measuring method and signal processing device" (Japanese Inventors)

ALEXANDRIA, Va., July 3 -- United States Patent no. 12,345,555, issued on July 1, was assigned to NIPPON TELEGRAPH AND TELEPHONE Corp. (Tokyo).

"Phase measuring method and signal processing device" was invented by Yoshifumi Wakisaka (Musashino, Japan), Daisuke Iida (Musashino, Japan), Keiji Okamoto (Musashino, Japan) and Hiroyuki Oshida (Musashino, Japan).

According to the abstract* released by the U.S. Patent & Trademark Office: "A phase measurement method is presented which causes wavelength-multiplexed pulsed light to be incident on a measurement target optical fiber, produces a scattered light vector obtained by plotting scattered light from the measurement target optical fiber for each wavelength onto a two-dimensional plane having t...