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1. 发明申请

WO2023078403A1 METHOD, APPARATUS AND SYSTEM FOR DETERMINING MULTIPATH INTERFERENCE (MPI) ON AN OPTICAL LINK 审中-公开
公开(公告)号：WO2023078403A1
公开(公告)日：2023-05-11
申请号：PCT/CN2022/129932
申请日：2022-11-04
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping
IPC分类号： H04B10/079 , H04B10/077
摘要： There is provided a method, apparatus and system for determining multipath interference (MPI) in optical communications. It is object of embodiments of the present disclosure to provide an effective, low-cost way of detecting or measuring MPI. To effectively detect and measure the MPI, multiple zero-power gaps are inserted into the transmission signal (optical signal) in time domain. In some embodiments, at least some of the zero-power gaps inserted in the main signal do not overlap the zero-power gaps of the reflection of the main signal. Using the zero-power gaps contained the main signal and the reflection (where applicable), power inside and outside the zero-power gaps are determined. Then, the strength of the MPI is determined based on the determined power inside and outside the zero-power gaps.

2. 发明申请

WO2022156457A1 RISK MAP FOR COMMUNICATION NETWORKS 审中-公开
公开(公告)号：WO2022156457A1
公开(公告)日：2022-07-28
申请号：PCT/CN2021/139550
申请日：2021-12-20
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , YOU, Yuren , HEMMATI, Mahdi , JAVADTALAB, Abbas
IPC分类号： H04L41/06
摘要： The disclosed systems, structures, and methods are directed to risk assessment of an optical network. A simulation framework includes a risk map engine including a performance prediction engine that generates a simulation of the optical network based at least in part on an input network topology and/or service map. The prediction performance engine runs the simulation to predict, based at least in part on received network telemetry data, direct and indirect impacts on the optical network of a risk factor represented in a what-if scenario. The risk map engine includes a risk assessment engine that determines a risk associated with the risk factor based at least in part on the predicted direct and indirect impacts and on a likelihood of occurrence of the risk factor. The risk assessment engine generates a risk map showing aggregate risks to the optical network from a plurality of risk factors.

3. 发明申请

WO2022073195A1 APPARATUSES AND METHODS FOR GENERATING AN OPTICAL SIGNAL IN AN OPTICAL COMMUNICATION NETWORK 审中-公开
公开(公告)号：WO2022073195A1
公开(公告)日：2022-04-14
申请号：PCT/CN2020/119994
申请日：2020-10-09
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , CHINIFOROOSHAN, Yasser , TANG, Jiang
IPC分类号： H04B10/50 , H04B10/2507 , H04B10/071
摘要： Apparatuses and methods are described for generating an optical signal in an optical network. The apparatus comprises at least a first and a second laser configured to generate a first or second series of optical pulses respectively and a polarization beam combiner (PBC). The PBC is configured to receive the first and second series of optical pulses. Each optical pulse in the first series of optical pulses is received with a first state of polarization (SOP), and each optical pulse in the second series of optical pulses is received with a second SOP. The first SOP and second SOP is orthogonal with respect to each other, and the PBC is further configured to combine the first and second series of optical pulses and to output an un-polarized optical signal. The un-polarized optical signal may help to reduce or mitigate nonlinear optical impairments caused by polarization of the optical signal.

4. 发明申请

WO2022012057A1 VARIABLE BANDWIDTH MICRORING OPTICAL FILTER DEVICE AND METHOD WITH FREQUENCY TUNING 审中-公开
公开(公告)号：WO2022012057A1
公开(公告)日：2022-01-20
申请号：PCT/CN2021/079440
申请日：2021-03-06
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： REN, Yang , VAN, Vien , JIANG, Zhiping
IPC分类号： G02F1/01 , G02B6/12007 , G02B6/29343 , G02B6/29353 , G02B6/29395 , G02F1/212 , G02F2203/15 , H04B10/5051
摘要： Methods and devices that provide a variable-bandwidth optical filter with frequency tuning are disclosed. A universal variable bandwidth optical filter architecture is disclosed, based on microring resonators that can vary both operation wavelength and bandwidth with no extra complexity relative to conventional wavelength tunable filters. The filter architecture provides a universal filter design for any arbitrary shape of filter response, such as second-order, fourth-order, sixth-order, and so on. The filter characteristics –insertion loss, in-band ripple, and out-of-band rejection level–may be maintained over the bandwidth tuning range. There is no need for extra heaters to tune the filter's operating bandwidth, as the same heaters used to tune the filter frequency can be used to tune filter bandwidth. The device can be used as an add/drop filter.

5. 发明申请

WO2020177644A1 MULTI-LAYER ENCODING OF OPTICAL SIGNALS 审中-公开
公开(公告)号：WO2020177644A1
公开(公告)日：2020-09-10
申请号：PCT/CN2020/077326
申请日：2020-02-29
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： SALEHIOMRAN, Ali , JIANG, Zhiping
IPC分类号： G01M11/00
摘要： In some examples, an apparatus includes a multi-layer code generator to generate codewords based on application of a plurality of layers of encoding, an optical source to produce encoded optical pulses based on the generated codewords, and an optical coupler to propagate the encoded optical pulses to an optical medium.

6. 发明申请

WO2019196884A1 SYSTEM AND METHOD FOR OPTICAL CHANNEL RECONFIGURATION 审中-公开
公开(公告)号：WO2019196884A1
公开(公告)日：2019-10-17
申请号：PCT/CN2019/082134
申请日：2019-04-10
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , YOU, Yuren
IPC分类号： H04J14/02
摘要： In wavelength division multiplexing (WDM) systems, one optical multiplexing section (OMS) can support several channels. During a network reconfiguration, the number or channel index of the channels in the OMS may change, which may result in a change in gain for other channels in the OMS due to the channel loading dependant gain properties of many optical amplifiers. Equalization is therefore required in order to reduce power excursion for the channels in the OMS. Using a model for the channel loading dependent gain of optical amplifiers, equalization may be performed more quickly than using measurement-based equalization methods. The model predicts the change in gain for the channels in an OMS following network reconfiguration, and allows for an equalizer to quickly or pre-emptively adjust for the changes. This model may include an artificial neural network, which is trained using some of the possible channel loading conditions for the OMS.

7. 发明申请

WO2019091326A1 WIDE PASSBAND WAVELENGTH SELECTIVE SWITCH 审中-公开
公开(公告)号：WO2019091326A1
公开(公告)日：2019-05-16
申请号：PCT/CN2018/113344
申请日：2018-11-01
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping
IPC分类号： G02B6/35 , G02F1/313
摘要： Methods and apparatus are provided that configure a wider passband for one or more channels of a wavelength selective switch (WSS). When a wider passband route WSS and a normal width passband select switch are used in combination, crosstalk that may be introduced by the wider passband route WSS can be mitigated. The wider passband WSS can provide a passband that allows a maximum bandwidth of signal to pass on a given channel and avoid signal being attenuated at the channel edges, especially when channels have a reduced channel spacing, such as with 50GHz spacing.

8. 发明申请

WO2018064812A1 SYSTEM AND METHOD FOR PILOT DATA DETECTION USING CORRELATION PEAK TRACKING 审中-公开
标题翻译：使用相关性峰值跟踪进行导频数据检测的系统和方法
公开(公告)号：WO2018064812A1
公开(公告)日：2018-04-12
申请号：PCT/CN2016/101499
申请日：2016-10-08
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , KE, Jianhong , JIN, Dajiang
IPC分类号： H04J11/00
摘要： During optical performance monitoring in low SNR conditions, the detection of pilot data may be more difficult because the detector may mistake noise for the pilot data signal. Systems and methods are disclosed herein that try to address this problem. In one embodiment, a pilot tone detector processes the received signal to determine a maximum correlation peak, and then performs tracking of the correlation peak over time. Unlike the pilot data signal, noise is typically more transient in nature. Therefore, if a correlation peak does not actually correspond to the pilot data signal, but instead corresponds to noise, then the correlation peak typically disappears over time when tracked. A search for a new correlation peak may then be performed. When a correlation peak is determined that actually corresponds to the pilot data signal, then the correlation peak typically remains when tracked.
摘要翻译：在低SNR条件下的光学性能监测期间，导频数据的检测可能更困难，因为检测器可能将噪声误认为导频数据信号。本文公开了试图解决该问题的系统和方法。在一个实施例中，导频音检测器处理接收到的信号以确定最大相关峰值，然后随着时间执行跟踪相关峰值。与导频数据信号不同，噪声本质上通常更加短暂。因此，如果相关峰值实际上不对应于导频数据信号，而是对应于噪声，则相关峰值在跟踪时通常随着时间消失。然后可以执行搜索新的相关峰值。当确定相关峰值实际上对应于导频数据信号时，则相关峰值通常在跟踪时保持不变。

9. 发明申请

WO2017185898A1 OPTICAL CONNECTOR WITH PHOTODETECTOR, ADAPTOR FOR OPTICAL CONNECTOR, AND SYSTEM 审中-公开
标题翻译：具有光电探测器的光学连接器，用于光学连接器的适配器和系统
公开(公告)号：WO2017185898A1
公开(公告)日：2017-11-02
申请号：PCT/CN2017/076824
申请日：2017-03-15
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , YUEN, Suet
IPC分类号： G02B6/42
摘要： In various aspects, an optical connector (104, 752, 762) with a built-in photo-detector (124) for detecting light in the optical connector (104, 752, 762); an adapter (206, 706) for detachably receiving an optical connector (104, 752, 762), comprising an electrode(208) configured to electrically contact an electrode (140) of the optical connector (104, 752, 762); a connection apparatus (202) comprising an arrangement of adapters (206, 706) for detachably receiving a plurality of optical connectors (104, 752, 762), each adapter (206, 706) comprising an electrode (208) configured to electrically contact an electrode (140) of the respective optical connector (104, 752, 762); a system with an interface (750,760) configured to make an optical connection with an optical connector (104, 752, 762) and a processing unit (312, 712) configured to receive from the connector (104, 752, 762) an indication and to generate a feedback signal indicative of said indication; and/or an optical connector (104, 752, 762) responsive to light to generate an electrical signal is provided.
摘要翻译：在各个方面，具有用于检测光连接器（104,752,762）中的光的内置光检测器（124）的光连接器（104,752,762）; （206,756），其用于可拆卸地接收光学连接器（104,752,762），所述适配器包括被配置为与所述光学连接器（104,752,762）的电极（140）电接触的电极（208）; 包括用于可拆卸地接收多个光学连接器（104,752,762）的适配器（206,706）的布置的连接装置（202），每个适配器（206,706）包括电极（208）相应的光学连接器（104,752,762）的电极（140）; 具有被配置为与光学连接器（104,752,762）进行光学连接的接口（750,760）和被配置为从连接器（104,752,762）接收指示的处理单元（312,712）的系统，以及产生指示所述指示的反馈信号; 和/或提供对光响应以产生电信号的光学连接器（104,752,762）。

10. 发明申请

WO2015139593A1 TRANSMITTER APPARATUS AND METHOD 审中-公开
标题翻译：发射机装置及方法
公开(公告)号：WO2015139593A1
公开(公告)日：2015-09-24
申请号：PCT/CN2015/074297
申请日：2015-03-16
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , CHEN, Chen , ZHANG, Zhuhong , LI, Chuandong
IPC分类号： H04J14/02
CPC分类号： H04B10/532 , H04B10/506 , H04B10/548 , H04B10/5561 , H04B10/5563 , H04J14/02
摘要： An apparatus comprises a digital signal processing module configured to receive a data stream and generate a plurality of digital multiple tones, a plurality of digital-to-analog converters coupled to the digital signal processing module, a plurality of drivers coupled to respective digital-to-analog converters, an electro-optic modulator having inputs coupled to the drivers and outputs coupled to a fiber and a multi-wavelength light source coupled to the electro-optic modulator.
摘要翻译：一种装置包括数字信号处理模块，被配置为接收数据流并产生多个数字多音调，多个数模转换器耦合到数字信号处理模块，多个驱动器耦合到相应的数字 - - 光谱调制器，其具有耦合到驱动器的输入和耦合到光纤的输出和耦合到电光调制器的多波长光源的电光调制器。

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