公开(公告)号：US20250070870A1

公开(公告)日：2025-02-27

申请号：US18944185

申请日：2024-11-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Fei YU ,  Huoqing HUANG ,  Congtu XIAO ,  Junying ZHAO ,  Changzheng SU ,  Anxue DU

IPC: H04B10/079 ,  H04B10/80

Abstract: An optical communication system includes a first component, a second component, and an optical connection assembly that connects the first component and the second component. An example method includes: controlling the first component to send a first optical signal to the second component through the optical connection assembly; sending an alarm indication when it is determined, based on an optical power variation status of the first optical signal in a transmission process, that the optical connection assembly is exceptional; and when it is determined, based on the optical power variation status of the first optical signal in the transmission process, that the optical connection assembly is normal, controlling the first component to send a second optical signal to the second component, where an optical power of the second optical signal is greater than an optical power of the first optical signal.

公开(公告)号：US20250088268A1

公开(公告)日：2025-03-13

申请号：US18957523

申请日：2024-11-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Changzheng SU ,  Baoping MAO ,  Bing ZHOU ,  Dong WANG ,  Qiang ZHONG

IPC: H04B10/079

Abstract: This application provides an optical module, an electronic device, a communication system, and a related processing method. The optical module includes: a first processing unit, and a sampling unit, a sampled information storage unit, and a fault information storage unit that are separately electrically connected to the first processing unit. The sampling unit is configured to collect first sampled parameters, and store the first sampled parameters in the sampled information storage unit by using the first processing unit. The first processing unit is configured to: when identifying alarm information, read the first sampled parameters in the sampled information storage unit, determine, based on the first sampled parameters, fault type information corresponding to the alarm information, and store the fault type information in the fault information storage unit. The optical module does not need to transmit a large amount of sampled data to the electronic device.

公开(公告)号：US20250112702A1

公开(公告)日：2025-04-03

申请号：US18978449

申请日：2024-12-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Wei LIU ,  Liuyong CHEN ,  Changzheng SU ,  Fei YU

IPC: H04B10/40

Abstract: Embodiments of the present invention disclose an optical module, a related apparatus, and an assembly method. in one example, an optical module includes a first circuit board, a second circuit board, and a connection board. The first circuit board includes a transmitter optical subassembly and a receiver optical subassembly. The second circuit board includes a processing unit. The first circuit board further includes a first connection port. The second circuit board further includes a second connection port. The transmitter optical subassembly and the receiver optical subassembly are separately connected to the first connection port. The processing unit is connected to the second connection port.

公开(公告)号：US20220075119A1

公开(公告)日：2022-03-10

申请号：US17527757

申请日：2021-11-16

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Yuping WU ,  Chunhui ZHANG ,  Changzheng SU

IPC: G02B6/26 ,  H04B10/61 ,  H04B10/80 ,  H04J14/02

Abstract: A space optical coupling apparatus, including M first couplers, a phase adjustment apparatus, N beam splitters, M second couplers, a coupling apparatus, and a controller. The first coupler receives a beam, and couples the beam to the phase adjustment apparatus. The phase adjustment apparatus includes M phase adjusters, N beam splitters, and N detectors. Each beam splitter is configured to split a received beam into two beams, one sent to a corresponding detector and the other sent to a corresponding phase adjuster. The second coupler receives output light from the coupling apparatus, and transmits the output light into the space. The coupling apparatus is configured to couple a beam onto a single-mode fiber. The controller is configured to control, based on the beam intensity detected by the detector and the beam intensity on the single-mode fiber, the M phase adjusters to adjust the phases of the received beams.

公开(公告)号：US20230188334A1

公开(公告)日：2023-06-15

申请号：US18166336

申请日：2023-02-08

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhengyu LI ,  Changzheng SU ,  Su HU ,  Yang ZOU

IPC: H04L9/08 ,  G06N10/00 ,  H04L9/06

CPC classification number: H04L9/0852 ,  G06N10/00 ,  H04L9/0618 ,  H04L9/0819 ,  H04L9/0822 ,  H04L9/083 ,  H04L9/0855

Abstract: This application discloses quantum key distribution methods and devices, and storage media. In an implementation, an ith node generates, based on a determined first quantum key corresponding to the ith node on a target routing path and a determined second quantum key corresponding to the ith node on the target routing path, a third quantum key corresponding to the ith node on the target routing path, and sends the third quantum key corresponding to the ith node on the target routing path to a destination node on the target routing path, or encrypts a received first ciphertext by using the third quantum key corresponding to the ith node on the target routing path, and sends an obtained second ciphertext corresponding to the ith node to an (i+1)th node on the target routing path.

公开(公告)号：US20210044432A1

公开(公告)日：2021-02-11

申请号：US17069317

申请日：2020-10-13

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhengyu LI ,  Changzheng SU ,  Su HU ,  Yang ZOU

IPC: H04L9/08 ,  H04L9/06 ,  G06N10/00

Abstract: This application provide quantum key distribution methods, devices, and storage media. In an implementation, a method comprises: determining, based on a first mapping, a first quantum key of N first quantum keys corresponding to an ith node on a target routing path; determining, based on a second mapping, a second quantum key of N second quantum keys corresponding to the ith node; and generating, by the ith node based on the first quantum key corresponding to the ith node and the second quantum key corresponding to the ith node, a third quantum key corresponding to the ith node on the target routing path.

公开(公告)号：US20200213105A1

公开(公告)日：2020-07-02

申请号：US16817125

申请日：2020-03-12

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Zhengyu LI ,  Changzheng SU

IPC: H04L9/08 ,  H04B10/70 ,  H04B10/516

Abstract: This application discloses a continuous-variable quantum key distribution (CV-QKD) device and method. The device includes a light source, a modulation unit, a first random number generator, and a processor, where the processor is configured to obtain a first data sequence based on a preset quantity of modulation format symbols, a distribution probability of each symbol, and a first random number sequence generated by the first random number generator, and obtain a second data sequence based on the first data sequence; and the modulation unit is configured to modulate, based on to the first data sequence, a signal emitted by the light source to output a second optical signal, where the second optical signal does not need to include quantum states with a quantity in an order of magnitude of 28×28 required in an existing Gaussian protocol.

公开(公告)号：US20190334710A1

公开(公告)日：2019-10-31

申请号：US16408485

申请日：2019-05-10

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Changzheng SU ,  Jiansong LU ,  Xinhua XIAO

IPC: H04L9/08 ,  H04L9/06 ,  H04B10/70

Abstract: An encryption method and device and a decryption method and device are provided, to resolve a problem that unconditional security of encrypted service data cannot be ensured in an existing service data encryption process and encryption processing of highly confidential service data cannot be implemented. The encryption device in the present invention obtains a quantum key and to-be-encrypted service data; encrypts the to-be-encrypted service data by using the quantum key, to generate a ciphertext; inserts the ciphertext into a specified byte in an OTN overhead byte, and performs encapsulation to obtain an OTN frame including the ciphertext; and converts the OTN frame from an electrical signal to an optical signal, and transmits the optical signal to a second OTN device.