-
11.发明授权公开(公告)号：US10063314B2
公开(公告)日：2018-08-28
申请号：US15449133
申请日：2017-03-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaodong Luo , Yansui Huang , Ning Deng
IPC: H04B10/071 , H04J14/02
CPC classification number: H04B10/071 , G01M11/3118 , G01M11/3145 , H04J14/02
Abstract: An optical time domain reflectometer and a method for detecting an optical fiber are disclosed. In an embodiment the optical time domain reflectometer includes: a service signal generator, a signal coupler connected to the service signal generator, an electro-optical modulator connected to the signal coupler, a transmitter connected to the electro-optical modulator, a photoelectric detector connected to the transmitter, and an analog to digital converter connected to the photoelectric detector. The optical time domain reflectometer further includes: a digital signal processor, connected to the service signal generator, the signal coupler, and the analog to digital converter, and configured to generate compensation data and a PN code sequence, receive a sampled signal sent by the analog to digital converter, and calculate a first optical fiber function.
-
12.发明申请公开(公告)号：US20170180042A1
公开(公告)日：2017-06-22
申请号：US15449133
申请日：2017-03-03
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xiaodong Luo , Yansui Huang , Ning Deng
IPC: H04B10/071 , H04J14/02
CPC classification number: H04B10/071 , G01M11/3118 , G01M11/3145 , H04J14/02
Abstract: An optical time domain reflectometer and a method for detecting an optical fiber are disclosed. In an embodiment the optical time domain reflectometer includes: a service signal generator, a signal coupler connected to the service signal generator, an electro-optical modulator connected to the signal coupler, a transmitter connected to the electro-optical modulator, a photoelectric detector connected to the transmitter, and an analog to digital converter connected to the photoelectric detector. The optical time domain reflectometer further includes: a digital signal processor, connected to the service signal generator, the signal coupler, and the analog to digital converter, and configured to generate compensation data and a PN code sequence, receive a sampled signal sent by the analog to digital converter, and calculate a first optical fiber function.
-
13.发明申请公开(公告)号：US20170093519A1
公开(公告)日：2017-03-30
申请号：US15375813
申请日：2016-12-12
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ning Deng
CPC classification number: H04J14/0298 , H04B10/548 , H04L5/0048 , H04L27/26 , H04L27/2613
Abstract: A method, an apparatus, and a device for modulating an orthogonal frequency division multiplexing optical signal are provided and relate to the field of optical communications technologies. The method includes: performing bit-to-symbol mapping and serial-to-parallel conversion on a baseband signal to obtain at least two sub symbol sequences of the baseband signal; determining, from all subcarriers of an OFDM signal, a subcarrier used for loading a pilot signal; updating, according to information of the pilot signal, content corresponding to the subcarrier used for loading the pilot signal; and performing inverse discrete Fourier transform, parallel-to-serial conversion, digital-to-analog conversion, and electrical amplification processing on content currently corresponding to all the subcarriers of the OFDM signal, and modulating a light wave by using processed data and a bias electrical signal, to form an OFDM optical signal loaded with the pilot signal.
-
14.发明申请公开(公告)号：US20130188957A1
公开(公告)日：2013-07-25
申请号：US13793928
申请日：2013-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ning Deng
IPC: H04B10/516
CPC classification number: H04B10/516 , H04B10/506 , H04J14/0221
Abstract: A method for adjusting a filtering bandwidth of an optical device includes: acquiring a modulation bandwidth of a first optical signal and s modulation bandwidth of a second optical signal, where the first optical signal is an optical signal input into a first wavelength channel of an optical device, the second optical signal is an optical signal input into a second wavelength channel of the optical device, and the second wavelength channel is adjacent to the first wavelength channel; comparing the modulation bandwidth of the first optical signal with the modulation bandwidth of the second optical signal; and according to a result of comparing the modulation bandwidth of the first optical signal with the modulation bandwidth of the second optical signal, adjusting a filtering bandwidth of at least one wavelength channel of the first wavelength channel and the second wavelength channel.
Abstract translation: 一种用于调整光学装置的滤波带宽的方法包括：获取第一光信号的调制带宽和第二光信号的调制带宽，其中第一光信号是输入光学第一波长信道的光信号 第二光信号是输入光器件的第二波长信道的光信号，第二波长信道与第一波长信道相邻; 将第一光信号的调制带宽与第二光信号的调制带宽进行比较; 并且根据将第一光信号的调制带宽与第二光信号的调制带宽进行比较的结果，调整第一波长信道和第二波长信道的至少一个波长信道的滤波带宽。
-
公开(公告)号：US12181370B2
公开(公告)日：2024-12-31
申请号：US17961004
申请日：2022-10-06
Applicant: Huawei Technologies Co., Ltd.
Inventor： Chao Pan , Ziliang Li , Ning Deng
IPC: G01M11/00 , H04B10/071
Abstract: An optical time-domain reflectometer (OTDR), where a laser emitting apparatus of the OTDR outputs a first optical signal in a first time period. A signal modulation apparatus of the OTDR generates a pulse signal based on the first optical signal, and outputs the pulse signal to an optical fiber in a second time period, where the first time period includes the second time period. A receiver of the OTDR receives a scattered signal from the optical fiber, where a frequency of the scattered signal is the same as a frequency of the first optical signal. Then, the laser emitting apparatus outputs a second optical signal in a third time period, where a frequency of the second optical signal is different from the frequency of the first optical signal. The second optical signal is used as a local oscillator signal to implement coherent detection in the receiver.
-
Patent Agency Ranking
公开(公告)号：US20240314473A1
公开(公告)日：2024-09-19
申请号：US18674116
申请日：2024-05-24
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zeshan Chang , Ning Deng , Jun Luo , Jiang Li
CPC classification number: H04Q11/0005 , G02B6/3512 , G02B6/3546 , H04Q2011/0016
Abstract: An apparatus includes a plurality of demultiplexing modules, a plurality of multiplexing modules, and a plurality of N×N switching modules. Each demultiplexing module is connected to P N×N switching modules through optical fibers. Each multiplexing module is connected to P N×N switching modules through optical fibers. Demultiplexing modules and multiplexing modules are connected to same N×N switching modules. At least one N×N switching module connected to a target demultiplexing module has a function of switching optical signals of a plurality of wavelengths for the target demultiplexing module. A quantity of wavelengths of optical signals received by each N×N switching module connected to the target demultiplexing module from the target demultiplexing module is less than a target value, and the target value is a quantity of wavelengths of optical signals received by the target demultiplexing module.
-
公开(公告)号：US11652553B2
公开(公告)日：2023-05-16
申请号：US17378329
申请日：2021-07-16
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
IPC: H04B10/40 , H04B10/516 , H04B10/61 , H04B10/64
CPC classification number: H04B10/40 , H04B10/516 , H04B10/614 , 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：US20220294171A1
公开(公告)日：2022-09-15
申请号：US17827224
申请日：2022-05-27
Applicant: Huawei Technologies Co., Ltd.
Abstract: An optical amplifier includes at least two stages of optical amplifier systems, an optical switch, a dynamic gain equalizer (DGE), and a control circuit. An input end of the optical switch is separately coupled to an output end of a first-stage optical amplifier system and an output end of a second-stage optical amplifier system, and an output end of the optical switch is separately coupled to an input end of the second-stage optical amplifier system and an input end of the DGE. The optical switch is configured to set at least two gain modes of the optical amplifier. The control circuit is configured to adjust an attenuation spectrum of the DGE based on the at least two gain modes set by the optical switch. The DGE is configured to perform, based on an adjusted attenuation spectrum, power attenuation processing on signals of different wavelengths in a received optical signal.
-
19.发明授权公开(公告)号：US08989594B2
公开(公告)日：2015-03-24
申请号：US13793928
申请日：2013-03-11
Applicant: Huawei Technologies Co., Ltd.
Inventor： Ning Deng
IPC: H04B10/00 , H04B10/516 , H04B10/50 , H04J14/02
CPC classification number: H04B10/516 , H04B10/506 , H04J14/0221
Abstract: A method for adjusting a filtering bandwidth of an optical device includes: acquiring a modulation bandwidth of a first optical signal and s modulation bandwidth of a second optical signal, where the first optical signal is an optical signal input into a first wavelength channel of an optical device, the second optical signal is an optical signal input into a second wavelength channel of the optical device, and the second wavelength channel is adjacent to the first wavelength channel; comparing the modulation bandwidth of the first optical signal with the modulation bandwidth of the second optical signal; and according to a result of comparing the modulation bandwidth of the first optical signal with the modulation bandwidth of the second optical signal, adjusting a filtering bandwidth of at least one wavelength channel of the first wavelength channel and the second wavelength channel.
Abstract translation: 一种用于调整光学装置的滤波带宽的方法包括：获取第一光信号的调制带宽和第二光信号的调制带宽，其中第一光信号是输入光学第一波长信道的光信号 第二光信号是输入光器件的第二波长信道的光信号，第二波长信道与第一波长信道相邻; 将第一光信号的调制带宽与第二光信号的调制带宽进行比较; 并且根据将第一光信号的调制带宽与第二光信号的调制带宽进行比较的结果，调整第一波长信道和第二波长信道的至少一个波长信道的滤波带宽。
-
公开(公告)号：US20240236531A9
公开(公告)日：2024-07-11
申请号：US18544932
申请日：2023-12-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Zeshan Chang , Tianhai Chang , Ning Deng
IPC: H04Q11/00
CPC classification number: H04Q11/0062 , H04Q11/0005 , H04Q2011/0032 , H04Q2011/0073
Abstract: A communication system, a transmitter, and a communication method. The communication system includes M transmitters, N receivers, and an optical switch network. Both N and M are positive integers greater than 1. The optical switch network includes one or more optical switches. A plurality of optical paths are configured in the optical switch network. When the transmitter communicates with the receiver, the transmitter can determine, from the plurality of optical paths, a target optical path from a source communication node to a destination communication node. After the optical switch network receives a target optical signal sent by the transmitter, the optical switch directly sends the target optical signal to the receiver based on the target optical path.
-
-
-
-
-
-
-
-
-
Search Results
28
records
(took 0.018 seconds)
