US Patent Issued to Huawei Technologies'Co., 'Ltd.' on Nov. 4 for "System, apparatus, and method for online distributed polarization-dependent loss monitoring" (Canadian Inventors)

ALEXANDRIA, Va., Nov. 6 -- United States Patent no. 12,463,720, issued on Nov. 4, was assigned to Huawei Technologies'Co.'Ltd.' (Shenzhen, China).

"System, apparatus, and method for online distributed polarization-dependent loss monitoring" was invented by Zhiping Jiang (Kanata, Canada) and Xiang Lin (Kanata, Canada).

According to the abstract* released by the U.S. Patent & Trademark Office: "A method for measuring polarization-dependent loss (PDL) of an optical link segment. The method has the steps of: measuring powers of first and second pilot tones (PTs) in a polarization-multiplexed (PM) optical signal at first and second link locations at or about an input and an output end of the optical link segment, respectively, the PM optical s...