公开(公告)号：US20210067244A1

公开(公告)日：2021-03-04

申请号：US17097519

申请日：2020-11-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhenhua DONG ,  Chao PAN ,  Zhiyong FENG ,  Xu ZHOU

IPC: H04B10/071 ,  H04B10/40 ,  H04B10/61 ,  H04B10/25

Abstract: This application discloses an optical signal transceiver apparatus, and belongs to the communications field. The apparatus includes: an optical signal generation module, configured to generate a to-be-sent optical signal and a local oscillator optical signal, where the to-be-sent optical signal includes an OTDR signal; an optical combining/splitting module, configured to: receive a to-be-processed optical signal from an optical fiber; and input the to-be-processed optical signal into an coherent receiving module; the coherent receiving module, configured to coherently receive the local oscillator optical signal and the to-be-processed optical signal to obtain a to-be-processed electrical signal; a signal processing module, configured to: obtain a first digital signal and a second digital signal from the to-be-processed electrical signal based on a signal frequency; process the first digital signal to obtain a communications code stream; and process the second digital signal to obtain information used to reflect a feature of the optical fiber.

公开(公告)号：US20210344425A1

公开(公告)日：2021-11-04

申请号：US17378329

申请日：2021-07-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xu ZHOU ,  Ning DENG

IPC: H04B10/40 ,  H04B10/516 ,  H04B10/61 ,  H04B10/64

Abstract: Embodiments of the present invention disclose an optical signal transmission system and an optical signal transmission method. A specific solution is as follows: a first coherent transceiver is configured to: convert N channels of downlink data into N modulating signals, convert the N modulating signals into a first wavelength division multiplexing signal, and send the first wavelength division multiplexing signal to an optical transport unit; the optical transport unit is configured to: receive the first wavelength division multiplexing signal, convert the first wavelength division multiplexing signal into N second optical signals, and correspondingly send the N second optical signals to N second coherent transceivers; and one of the N second coherent transceivers is configured to: receive the N second optical signals, and process the N second optical signals to obtain information in downlink data carried in the N second optical signals.

公开(公告)号：US20210175994A1

公开(公告)日：2021-06-10

申请号：US17181760

申请日：2021-02-22

Applicant: Huawei Technologies Co., Ltd.

Inventor： Xu ZHOU ,  Xiang LIU ,  Yansi LE ,  Zhiyong FENG

IPC: H04J14/02 ,  H04B10/69

Abstract: This disclosure relates to a signal processing method and apparatus. The method includes: receiving an optical signal in a target receive channel, and converting the optical signal into an electrical signal; determining, in the converted electrical signal, an electrical signal associated with a non-overlapping frequency band between the target receive channel and another channel, where the another channel is a channel that overlaps the target receive channel; and determining, based on the electrical signal associated with the non-overlapping frequency band, an electrical signal corresponding to a valid received optical signal that does not include an interfering optical signal in the target receive channel. In this disclosure, the target transmit channel and the another channel are set to channels that overlap each other, thereby reducing bandwidths occupied by the channels. In the method provided in the embodiments of this disclosure, spectrum utilization can be improved, thereby improving a data transmission rate.