US Patent Issued to EXFO on July 21 for "Method and apparatus of single-ended polarization mode dispersion measurement" (Canadian Inventors)

ALEXANDRIA, Va., July 21 -- United States Patent no. 12,687,459, issued on July 21, was assigned to EXFO Inc. (Quebec, Canada).

"Method and apparatus of single-ended polarization mode dispersion measurement" was invented by Hongxin Chen (Montreal), Yves Breton (Quebec, Canada) and Mathieu Huneault (Quebec, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method and system of measuring the PMD of an optical fiber under test (FUT). A polarization-sensitive optical time domain reflectometer (POTDR) is used to inject into the FUT and from a proximal end thereof, a test signal comprising a series of repeated light pulses and detecting a corresponding polarization-analyzed return light signal coming back fr...