公开(公告)号：US20230344523A1

公开(公告)日：2023-10-26

申请号：US18332894

申请日：2023-06-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Tao GUI ,  Xuefeng WANG ,  Juntao CAO

IPC: H04B10/61

CPC classification number: H04B10/615 ,  H04B10/6164

Abstract: A coherent optical receiver, and an optical communication device and system, and relates to the field of optical communication. A polarization control component in the coherent optical receiver can deflect, driven by a feedback control circuit, a state of polarization of local oscillator light, and decompose the local oscillator light into two channels of light having equal or similar optical power. Therefore, the state of polarization of the local oscillator light is not deflected randomly and thereby coherent detection is not affected. Moreover, an azimuth of a half-wave plate device in the polarization control component can be deflected continuously, allowing continuous tracking and adjustment for the state of polarization of the local oscillator light.