公开(公告)号：US20240106533A1

公开(公告)日：2024-03-28

申请号：US18498614

申请日：2023-10-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xuefeng TANG ,  Ge GAO ,  Jianwu WANG ,  Zhiping JIANG ,  Zhuhong ZHANG

IPC: H04B10/077 ,  H04B10/079 ,  H04B10/294 ,  H04B10/61

CPC classification number: H04B10/0775 ,  H04B10/07953 ,  H04B10/2942 ,  H04B10/616

Abstract: Device and methods for real-time polarization-dependent loss monitoring at coherent transceivers. In one embodiment, there is provided a method of monitoring a polarization dependent loss (PDL) of a signal during transmission through an optical communication link, the method comprising: receiving the signal by a coherent receiver, the received signal being subjected to one or more impairments in Amplifier Gain Control (AGC) mode, the one or more impairments including PDL; estimating an AGC gain effect of the AGC mode; compensating for the AGC gain effect in the received signal; determining the PDL from the compensated signal; and reporting the PDL.