公开(公告)号：US20210234614A1

公开(公告)日：2021-07-29

申请号：US17229005

申请日：2021-04-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Ping ZHAO ,  Liangchuan LI ,  Xinhua XIAO

IPC: H04B10/40 ,  H04B10/50 ,  H04B10/61 ,  H04B10/25

Abstract: Embodiments of the present invention provide an optical transceiver including an optical interface, an optical receiver, and a polarization-maintaining optical waveguide, where the optical receiver includes a mixer, an optical-to-electrical converter, and a digital signal processor. The optical interface is configured to receive first local oscillator light from a first laser outside the transceiver; the mixer is configured to receive the first local oscillator light and receive first signal light modulated on laser light; the polarization-maintaining optical waveguide is configured to connect the optical interface and the optical receiver, where a polarization state of the first local oscillator light remains unchanged when being transmitted in the polarization-maintaining optical waveguide; the optical-to-electrical converter and an analog-to-digital converter are configured to perform optical-to-electrical conversion and analog-to-digital conversion on the mixed light to obtain a digital signal; and the digital signal processor is configured to process the digital signal to obtain data.