US Patent Issued to Alcatel Submarine Networks on Dec. 30 for "Method and apparatus for suppression of noise due to local oscillator instability in a coherent fiber optical sensor" (Norwegian Inventors)

ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,510,380, issued on Dec. 30, was assigned to Alcatel Submarine Networks (Nozay, France).

"Method and apparatus for suppression of noise due to local oscillator instability in a coherent fiber optical sensor" was invented by Erlend Ronnekleiv (Trondheim, Norway) and Ole Henrik Waagaard (Trondheim, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for measuring a response from an optical fiber providing distributed back reflections using a system comprising an optical source comprising a laser, an optical receiver and a processing unit is disclosed. The method comprises generating an interrogation signal and an optical local oscillator using t...