ALEXANDRIA, Va., June 2 -- United States Patent no. 12,647,181, issued on June 2, was assigned to TAMPNET AS (Stavanger, Norway).

"Locating disturbances in optical fibres" was invented by Steinar Bjornstad (Stavanger, Norway).

According to the abstract* released by the U.S. Patent & Trademark Office: "An apparatus for determining a position of a disturbance to an optical fibre assembly comprises a detector system that receives concurrently, from the optical fibre system, a first digital optical signal having a first wavelength and a second digital optical signal having a second wavelength. The apparatus monitors a common parameter of the first and second signals over time and determines respective times at which a change occurs in said pa...