US Patent Issued to EXFO on June 23 for "Method and apparatus of distributed acoustic sensing" (Canadian Inventors)

ALEXANDRIA, Va., July 15 -- United States Patent no. 12,663,308, issued on June 23, was assigned to EXFO Inc. (Quebec, Canada).

"Method and apparatus of distributed acoustic sensing" was invented by Hongxin Chen (Montreal) and Michel Leblanc (Quebec, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "There is provided a method and system of frequency dithered distributed acoustic sensing (FD-DAS) using group data signal processing, where the continuous wave (CW) coherent laser's optical frequency or optical phase for the FD-DAS interrogator may be set in evenly or randomly distributed manner for different data groups but they are kept as constant or with negligibly variation within each data group. Such F...