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11. 发明申请

WO2023078227A1 TRANSMITTER AND RECEIVER FOR MIRROR CROSSTALK EVALUATION AND METHODS THEREFOR 审中-公开
公开(公告)号：WO2023078227A1
公开(公告)日：2023-05-11
申请号：PCT/CN2022/128893
申请日：2022-11-01
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , TANG, Xuefeng , CHANG, Junho
IPC分类号： H04L25/02
摘要： The disclosed systems and methods for detecting mirror crosstalk between frequency bands equally above and below the center frequency of a Digital Subcarrier Multiplexing system include: a transmitter configured to insert zero-power symbols on half the frequency bands below center frequency, and insert other zero-power symbols, partially overlapping in time with the first zero-power symbols, on the other half of the frequency bands above center frequency. A receiver zeroes out ASE and other noises during the overlapping portion of all the zero-power symbols, then uses the power detected during the remaining portion of each zero-power symbol in each frequency band to accurately evaluate the mirror crosstalk from the corresponding frequency band on the opposite side of center frequency.

12. 发明申请

WO2022083056A1 SYSTEMS AND METHODS FOR FAST WAVELENGTH SELECTION IN AN OPTICAL NETWORK 审中-公开
公开(公告)号：WO2022083056A1
公开(公告)日：2022-04-28
申请号：PCT/CN2021/082176
申请日：2021-03-22
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping
IPC分类号： H04B10/25 , H04B10/2575
摘要： Systems and methods are described in an optical network. A system includes a first wavelength selector system having a first input port and a first output port, the first input port configured to receive a first set of multi-wavelength signals and the first output port configured to output a second set of multi-wavelength signals, the second set of multi-wavelength signals being a subset of the first set of multi-wavelength signals; a second wavelength selector system having a second input port and a second output port, the second input port configured to receive the second set of multi-wavelength signals and the second output port configured to output a final optical signal from the second set of multi-wavelength signals; and a controller coupled to the first wavelength selector system and the second wavelength selector system.

13. 发明申请

WO2022012056A1 DEVICE AND METHOD FOR REAL-TIME CALIBRATION AND COMPENSATION FOR TRANSMITTER POWER IMBALANCE IN A COHERENT TRANSCEIVER 审中-公开
公开(公告)号：WO2022012056A1
公开(公告)日：2022-01-20
申请号：PCT/CN2021/079433
申请日：2021-03-06
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： TANG, Xuefeng , NG, Wing Chau , JIANG, Zhiping , ZHANG, Zhuhong
IPC分类号： H04B10/50 , G02F1/21 , G02F1/212 , H04B10/548 , H04B10/564
摘要： Methods and devices for power imbalance compensation and calibration of a coherent transmitter or transceiver are described. A pilot tone is combined with a digital data signal such that relative amplitudes of the pilot tone in each of four transmitted optical data channels may be detected by a pilot tone detector and used to calculate any power imbalances between I/Q phase channels and/or X/Y polarized channels of the transmitter. The pilot tone detector applies gain to the data signal of the transmitter to compensate for any calculated power imbalances. Because the pilot tone is combined with the digital data signal, its amplitude in each received channel is proportional to the data signal power of that channel.

14. 发明申请

WO2019068268A1 LOW COST INTENSITY-MODULATED DIRECT-DETECTION (IMDD) OPTICAL TRANSMITTER AND RECEIVER 审中-公开
公开(公告)号：WO2019068268A1
公开(公告)日：2019-04-11
申请号：PCT/CN2018/109366
申请日：2018-10-08
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , TANG, Xuefeng , ZHANG, Zhuhong
IPC分类号： H04B10/25
摘要： An embodiment method includes multiplexing light emitted by the plurality of optical transmitters to provide a multiplexed optical signal; propagating the multiplexed optical signal through an optical interleaver from a first port thereof to a combined port thereof and back to a second port thereof; and detecting an optical signal at the second port of the optical interleaver.

15. 发明申请

WO2019024830A1 SYSTEMS AND METHODS FOR OPTICAL SIGNAL-TO-NOISE RATIO MONITORING 审中-公开
公开(公告)号：WO2019024830A1
公开(公告)日：2019-02-07
申请号：PCT/CN2018/097688
申请日：2018-07-28
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , TANG, Xuefeng
IPC分类号： H04B10/079 , H04B10/077
摘要： A system for monitoring optical signal-to-noise ratio (OSNR) is provided. In some specific examples, the system may use a pilot tone power of a signal modulated with pilot tone to derive the pure signal power and the variance of the whole electric field to derive the total power (pure signal power plus amplified spontaneous emission (ASE) power of the signal). The ASE power can be obtained by subtracting the pure signal power from the total power (ASE + pure signal). Once the ASE power and the pure signal power are known, the OSNR can be calculated.

16. 发明申请

WO2017139974A1 OPTICAL CHANNEL MONITORING USING EXPANDED-SPECTRUM PILOT TONE 审中-公开
标题翻译：使用扩频光谱仪进行光通道监测
公开(公告)号：WO2017139974A1
公开(公告)日：2017-08-24
申请号：PCT/CN2016/074144
申请日：2016-02-19
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , SI, Minggang , JIN, Dajiang , LUO, Xiaodong , KE, Jianhong
IPC分类号： H04B10/077 , H04B10/50
CPC分类号： H04B10/077 , H04B10/0775 , H04B10/516 , H04B10/69 , H04B2210/075 , H04J14/02
摘要： A system monitors optical performance of an optical link within an optical network. The system includes an optical transmitter having an expanded-spectrum pilot-tone modulator for modulating an expanded-spectrum pilot tone onto a high-speed data signal to generate an expanded-spectrum optical signal and an optical receiver for receiving the expanded-spectrum optical signal and for detecting and decoding the expanded-spectrum pilot tone to enable monitoring of the optical performance of the optical link.
摘要翻译：系统监视光网络内的光链路的光学性能。该系统包括具有扩展频谱导频音调制器的光发送器，用于将扩展频谱导频音调制到高速数据信号上以生成扩展频谱光信号，以及光接收器，用于接收扩展频谱光信号并用于检测和解码扩展频谱导频音以便监控光链路的光学性能。

17. 发明申请

WO2017005033A1 APPARATUS AND METHOD FOR TUNING AND SWITCHING BETWEEN OPTICAL COMPONENTS 审中-公开
标题翻译：用于在光学元件之间进行调谐和切换的装置和方法
公开(公告)号：WO2017005033A1
公开(公告)日：2017-01-12
申请号：PCT/CN2016/079559
申请日：2016-04-18
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping
IPC分类号： H04B10/25
CPC分类号： G02B6/29395 , G02B6/29338 , H01S5/062 , H01S5/125 , H01S5/5027 , H04Q11/0005 , H04Q2011/0016
摘要： Apparatuses and methods for tuning and switching between optical components are provided. The apparatuses and methods may be used in the context of optical communication. An example apparatus may include a first optical path having a first tunable component and a second optical path having a second tunable component. The apparatus may also include a first switch component for selectively connecting the first optical path to an output, and a second switch component for selectively connecting the second optical path to the output. The first and second switch components may be semiconductor optical amplifiers (SOAs). The apparatus may have a controller that controls the first switch component and the second switch component to select which optical path is connected to the output and controls tuning of the tunable component in the optical path that is not connected to the output.
摘要翻译：提供了用于在光学部件之间进行调谐和切换的装置和方法。这些装置和方法可以在光通信的上下文中使用。示例性设备可以包括具有第一可调组件的第一光路和具有第二可调组件的第二光路。该装置还可以包括用于将第一光路选择性地连接到输出端的第一开关部件和用于选择性地将第二光路连接到输出端的第二开关部件。第一和第二开关部件可以是半导体光放大器（SOA）。该装置可以具有控制第一开关部件和第二开关部件的控制器，以选择哪个光路连接到输出端，并控制未连接到输出端的光路中的可调组件的调谐。

18. 发明申请

WO2016112769A1 METHOD AND SYSTEM FOR REMOVING A PILOT TONE FROM AN OPTICAL SIGNAL 审中-公开
标题翻译：从光信号中移除引导音的方法和系统
公开(公告)号：WO2016112769A1
公开(公告)日：2016-07-21
申请号：PCT/CN2015/097781
申请日：2015-12-17
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , ZHANG, Zhuhong , TANG, Xuefeng
IPC分类号： H04L12/26 , H04B10/07 , H04J14/02
CPC分类号： H04J14/0276 , H04B10/077 , H04B10/0775 , H04B10/2504 , H04B10/516 , H04B2210/075 , H04J14/06
摘要： The present applies to digital wavelength converters that convert, independently of the format in which optical data may be encoded, an input waveform at a first wavelength to an output waveform at a second wavelength. When operating in an environment where an input waveform has a pilot tone associated thereto, the method and system of the present disclosure allows for the removal of the pilot tone from the input waveform, and also allows for the addition of another pilot to the output waveform.
摘要翻译：本发明适用于与光学数据可被编码的格式独立地将第一波长的输入波形转换为第二波长的输出波形的数字波长转换器。当在输入波形具有与其相关联的导频音的环境中操作时，本公开的方法和系统允许从输入波形中去除导频音，并且还允许将另外的导频添加到输出波形。

19. 发明申请

WO2015099812A1 SYSTEM AND METHOD FOR REDUCING THE STIMULATED RAMAN SCATTERING CROSSTALK IN CHANNEL MONITORING 审中-公开
标题翻译：用于减少通道监测中刺激拉曼散射波纹的系统和方法
公开(公告)号：WO2015099812A1
公开(公告)日：2015-07-02
申请号：PCT/US2013/078219
申请日：2013-12-30
申请人： HUAWEI TECHNOLOGIES CO., LTD. , FUTUREWEI TECHNOLOGIES, INC.
发明人： JIANG, Zhiping , ZHONG, Jian
IPC分类号： H04J14/02
CPC分类号： H04Q11/0005 , H04B10/2537 , H04J14/0212 , H04J14/0221 , H04J14/0224 , H04J14/0272 , H04Q11/0066 , H04Q2011/0049 , H04Q2011/0083
摘要： System, apparatus, and method embodiments are provided for suppressing the stimulated Raman scattering (SRS) crosstalk in multiple wavelength channel signals propagating in fiber links, such as in WDM/DWDM or other optical communications systems. The SRS is reduced or suppressed by separating the channels into two sets of different channels, such as even and odd channels, and then performing subtraction of signal amplitudes between the two sets of channels. The channels are separated by an interleaver into the two sets. Alternatively, a wavelength selective switch (WSS) is used to separate the channels into the two sets on which the subtraction of signal amplitudes is then performed. In an embodiment, the signals are low frequency modulation signals used for channel monitoring for optical communications systems.
摘要翻译：提供了系统，装置和方法实施例，用于抑制在诸如WDM / DWDM或其他光通信系统中的光纤链路中传播的多个波长信道信号中受激拉曼散射（SRS）串扰。通过将信道分离成两组不同的信道，例如偶数和奇数信道，然后在两组信道之间进行信号幅度的减法来减小或抑制SRS。通道由交织器分成两组。或者，使用波长选择开关（WSS）将信道分离成在其中执行信号幅度减法的两组中。在一个实施例中，信号是用于光通信系统的信道监测的低频调制信号。

20. 发明申请

WO2012175016A1 METHOD OF EFFICIENTLY AND SAFELY ADDING AND DELETING CHANNELS IN AN AMPLIFIED WAVELENGTH DIVISION MULTIPLEXING SYSTEM 审中-公开
标题翻译：在扩频波段多路复用系统中有效和安全地添加和删除通道的方法
公开(公告)号：WO2012175016A1
公开(公告)日：2012-12-27
申请号：PCT/CN2012/077195
申请日：2012-06-20
申请人： HUAWEI TECHNOLOGIES CO., LTD. , JIANG, Zhiping , ZHONG, Jian
发明人： JIANG, Zhiping , ZHONG, Jian
IPC分类号： H04J14/02 , H04B10/02
CPC分类号： H04B10/0793 , H04B10/294 , H04J14/0201 , H04J14/0221
摘要： An apparatus comprising one or more optical amplifiers coupled to an optical link and configured to amplify a plurality of Wavelength Division Multiplexing (WDM) channels that are transmitted at a plurality of wavelengths on the optical link, and a processor coupled to the optical link and configured to add, delete, or both a plurality of WDM channels in the optical link based on an allowed power ratio indication for the WDM channels, wherein the allowed power ratio indication is calculated based on a plurality of gain change representations for the WDM channels at a plurality of power ratios and on a link budget requirement for the optical link.
摘要翻译：一种装置，包括耦合到光链路并被配置为放大在光链路上以多个波长发送的多个波分复用（WDM）信道的一个或多个光放大器，以及耦合到光链路并配置的处理器基于用于WDM信道的允许功率比指示来添加，删除或同时在所述光链路中的多个WDM信道，其中，基于对于所述WDM信道的WDM信道的多个增益改变表示来计算所述允许功率比指示多个功率比和光链路的链路预算需求。

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