US Patent Issued to Nokia Solutions and Networks on Sept. 8 for "Long range distributed fiber sensing with improved noise performance" (New Jersey Inventors)

ALEXANDRIA, Va., Sept. 8 -- United States Patent no. 12,729,986, issued on Sept. 8, was assigned to Nokia Solutions and Networks Oy (Espoo, Finland).

"Long range distributed fiber sensing with improved noise performance" was invented by Mikael Mazur (Summit, N.J.) and Nicolas Fontaine (New Providence, N.J.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and apparatus of OFDR are disclosed, in which a pair of probe signals are launched, on mutually orthogonal channels, into the optical fiber cable that is to be monitored. In a digital processing circuit, phase noise is cancelled from the return signals after detecting them in their respective mutually orthogonal channels and after demodulating them, b...