ALEXANDRIA, Va., Oct. 8 -- United States Patent no. 12,436,004, issued on Oct. 7, was assigned to Optasense Holdings Ltd. (Camberley, Great Britain).
"Fibre optic sensing" was invented by Richard Hooper (Farnborough, Great Britain) and Roger Crickmore (Farnborough, Great Britain).
According to the abstract* released by the U.S. Patent & Trademark Office: "This application relates to methods and apparatus for distributed fibre optic sensing. The apparatus includes an optical arrangement configured to generate a local oscillator signal (LO) and also to repeatedly interrogate a sensing optical fibre. Each interrogation comprises at least one pulse of coherent optical radiation at a launch frequency, which differs from that of the local oscil...