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41. 发明申请

WO2018090566A1 OPTICAL TRANSCEIVER, COMMUNICATION SYSTEM, AND ADAPTIVE FREQUENCY CONTROL METHOD 审中-公开
公开(公告)号：WO2018090566A1
公开(公告)日：2018-05-24
申请号：PCT/CN2017/082140
申请日：2017-04-27
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , LI, Chuandong , ZHANG, Zhuhong , TANG, Xuefeng
IPC分类号： H04J14/02
CPC分类号： H04B10/40 , H04B3/32 , H04B10/5563 , H04B10/572 , H04B10/61 , H04B2210/254 , H04J14/0282 , H04Q11/0067 , H04Q2011/0047
摘要： An optical transceiver is provided with an optical front end for receiving signal light comprising an optical sub-channel, and for providing an electrical signal based on the signal light; a light source optically coupled to the optical front end for providing local oscillator light thereto for mixing with the signal light; an electro-optical modulator coupled to the light source for receiving output light therefrom and for modulating the output light with digital information to obtain modulated light; and a signal processor operably coupled to the optical front end. The signal processor is configured for processing the electrical signal to obtain a frequency offset of the sub-channel; and adjusting an optical frequency of the modulated light based on the frequency offset. When applied to a multiple-access environment, this may allow access nodes to generate optical sub-channels in the uplink direction using the downlink optical signal as an optical frequency reference.

42. 发明申请

WO2017219366A1 METHOD AND APPARATUS FOR PROVIDING A PILOT TONE 审中-公开
标题翻译：提供导频音的方法和设备
公开(公告)号：WO2017219366A1
公开(公告)日：2017-12-28
申请号：PCT/CN2016/087122
申请日：2016-06-24
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , LIU, Tejia , YANG, Hong , JIN, Dajiang , SI, Minggang
IPC分类号： H04B10/07
摘要： The disclosure is directed at a method and system for optical telecommunications performance monitoring via a dual frequency pilot tone. By applying a dual frequency pilot tone, with a first pilot tone frequency selected from a low frequency band and a second pilot tone frequency selected from a high frequency band, either simultaneously or alternatively, to a wavelength channel, one of the pilot tone frequencies may be adaptively selected to improve wavelength channel monitoring. More specifically, stimulated Raman scattering (SRS) caused crosstalk and chromatic dispersion (CD) caused pilot fading which adversely affect performance monitoring of the wavelength channel may be reduced.
摘要翻译：本公开针对经由双频导频音进行光通信性能监测的方法和系统。通过应用具有从低频带中选择的第一导频音频率和从高频带中选择的第二导频音频率的双频导频音调同时或者可选地对于波长信道应用导频音调频率之一自适应地选择以改善波长信道监测。更具体地说，受激拉曼散射（SRS）引起的串扰和色散（CD）导致导频衰落，这对波长信道的性能监测可能会有所减小。

43. 发明申请

WO2017193935A1 GENERATING A PILOT TONE FOR AN OPTICAL TELECOMMUNICATIONS SYSTEM 审中-公开
标题翻译：为光电信系统生成导频音
公开(公告)号：WO2017193935A1
公开(公告)日：2017-11-16
申请号：PCT/CN2017/083779
申请日：2017-05-10
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , ZHANG, Zhuhong , LI, Chuandong
IPC分类号： H04B10/00
摘要： The disclosure is directed to a method and system for generating a pilot tone for an optical signal with an optical telecommunications system. The pilot tone is generated in the digital domain by modulating the data to be transmitted to a destination node within the optical telecommunications network. The modulation of the data introduces occurrence modulation to the optical signal.
摘要翻译：本公开涉及用于利用光学电信系统产生用于光信号的导频音的方法和系统。通过调制要发送到光通信网络内的目的地节点的数据，在数字域中产生导频音。数据的调制引入了对光信号的出现调制。

44. 发明申请

WO2017148203A1 WAVELENGTH SELECTIVE SWITCH WITH MONITORING PORTS 审中-公开
标题翻译：带监控端口的波长选择开关
公开(公告)号：WO2017148203A1
公开(公告)日：2017-09-08
申请号：PCT/CN2016/110444
申请日：2016-12-16
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping
IPC分类号： H04J14/02
摘要： Apparatuses and methods for wavelength selective switching and optical performance monitoring are provided. Spatially separated wavelength channels of an optical signal are directed onto an optical deflector array. The optical deflector array is configured so that each wavelength channel is incident on a respective region of the optical deflector array. The optical deflector array is controlled so that, for one or more of the wavelength channels: i) a first portion of the region of the optical deflector array upon which the wavelength channel is incident is configured to steer a first portion of the wavelength channel toward a switching output port; and ii) a second portion of the region is configured to steer a second portion of the wavelength channel toward a monitoring output port.
摘要翻译：提供了用于波长选择性切换和光学性能监测的装置和方法。光信号的空间分离的波长信道被引导到光偏转器阵列上。光学偏转器阵列被配置为使得每个波长信道入射在光学偏转器阵列的相应区域上。控制光学偏转器阵列，使得对于一个或多个波长信道：i）波长信道入射到其上的光学偏转器阵列的区域的第一部分被配置为将波长信道的第一部分转向一个开关输出端口; 以及ii）所述区域的第二部分被配置成将所述波长信道的第二部分导向监视输出端口。

45. 发明申请

WO2016145597A1 DEVICE AND METHOD FOR OTDR TRANSMITTER NOISE COMPENSATION 审中-公开
标题翻译： OTDR发射机噪声补偿的装置和方法
公开(公告)号：WO2016145597A1
公开(公告)日：2016-09-22
申请号：PCT/CN2015/074306
申请日：2015-03-16
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , YAO, Demin , LUO, Xiaodong , HUANG, Yansui
IPC分类号： H04B10/071
CPC分类号： H04B10/0775 , G01M11/00 , G01M11/3118 , H04B10/071
摘要： An optical device with integrated Optical Time Domain Reflectometer (OTDR) functionality and method for the same is provided. The optical device includes a transmitter and an Optical Time Domain Reflectometer (OTDR) module, The transmitter is configured to generate an Optical Time Domain Reflectometer (OTDR)-modulated optical supervisory channel (OSC) signal by applying an OTDR modulation to an optical supervisory channel (OSC) signal using an OTDR signal and to transmit the OTDR-modulated OSC signal. The OTDR module is configured to generate the OTDR signal, to monitor a returned light signal, to determine transmitter noise compensation information, and to generate OTDR trace information using transmitter noise compensation information and the monitored returned light signal.
摘要翻译：提供了具有集成光时域反射计（OTDR）功能的光学器件及其方法。光学装置包括发射机和光时域反射计（OTDR）模块。发射机被配置为通过对光监控信道应用OTDR调制来产生光时域反射计（OTDR）调制的光监控信道（OSC）信号（OSC）信号，并发送OTDR调制的OSC信号。 OTDR模块被配置为生成OTDR信号，监视返回的光信号，以确定发射机噪声补偿信息，并使用发射机噪声补偿信息和监视的返回光信号来产生OTDR跟踪信息。

46. 发明申请

WO2015116501A1 SYSTEM AND METHOD FOR PILOT TONE MODULATION BY DATA BIAS 审中-公开
标题翻译：通过数据偏移进行调音的系统和方法
公开(公告)号：WO2015116501A1
公开(公告)日：2015-08-06
申请号：PCT/US2015/012738
申请日：2015-01-23
申请人： HUAWEI TECHNOLOGIES CO., LTD. , FUTUREWEI TECHNOLOGIES, INC.
发明人： JIANG, Zhiping , ZHONG, Jian
IPC分类号： H04B10/80 , H04B17/00
CPC分类号： H04B10/07955 , H04B10/0775 , H04B10/541 , H04B10/60 , H04B2210/075 , H04J14/0227 , H04Q11/0066 , H04Q2011/0083
摘要： Embodiments are provided for applying pilot tone modulations to optical signals by introducing bias bits to data frames carried on the optical signals. Since the modulation is done by modifying data, the modulation depth is accurate, and there is no need for calibration or feedback control, which can improve power monitoring accuracy and simplify implementation. In an embodiment, a transmitter determines a period of a pilot tone modulation for tracking or identifying an optical channel. The transmitter inserts a sequence of bias bits, periodically according to the determined period, in a plurality of frames comprising original data bits. The amplitudes of the optical signals carrying the frames are modulated at a higher frequency than the pilot tone modulation. The optical signals are then transmitted including the bias bits within the frames.
摘要翻译：提供实施例，用于通过将偏移位引入到光信号上承载的数据帧来对导频调制应用于光信号。由于调制是通过修改数据完成的，所以调制深度是准确的，不需要校准或反馈控制，这可以提高功率监控精度并简化实现。在一个实施例中，发射机确定用于跟踪或识别光信道的导频音调制的周期。发射机在包括原始数据比特的多个帧中根据确定的周期周期性地插入偏移比特序列。承载帧的光信号的幅度以比导频音调制更高的频率进行调制。然后发送光信号，包括帧内的偏置位。

47. 发明申请

WO2023066037A1 SYSTEMS AND METHODS FOR MONITORING GENERALIZED OPTICAL SIGNAL-TO-NOISE RATIO 审中-公开
公开(公告)号：WO2023066037A1
公开(公告)日：2023-04-27
申请号：PCT/CN2022/123933
申请日：2022-10-09
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , HAHN, Choloong
IPC分类号： H04B10/25
摘要： The disclosed systems and methods for monitoring, by a coherent optical monitor (OPM), generalized optical signal-to-noise ratio (gOSNR) of an optical channel, the method comprising: i) receiving, by an input port of the coherent OPM, a first signal and a second signal, wherein: the first signal and the second signal include same data, the first signal is an optical signal received from the optical channel, and the first signal is affected by a noise; ii) processing, by a digital signal processor (DSP) of the coherent OPM, the first signal and the second signal and extract the data from the first signal and the second signal; iii) computing, by the DSP, a first correlation between the data from the first signal and the data from the second digital signal; and iv) computing, by the DSP, a first gOSNR based on the first correlation.

48. 发明申请

WO2023046024A1 METHOD AND SYSTEMS TO IDENTIFY TYPES OF FIBERS IN OPTICAL NETWORK 审中-公开
公开(公告)号：WO2023046024A1
公开(公告)日：2023-03-30
申请号：PCT/CN2022/120584
申请日：2022-09-22
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： JIANG, Zhiping , WANG, Simin
IPC分类号： H04B10/07
摘要： A method to determine the types of optical fibers forming a link of an optical communication network. By scanning a signal's bit error rate at a receiver end, as a function of a pre-dispersion applied to a signal at a transmitter end, local minimums in the curve indicate the presence of amplifiers, and therefore fiber span extremities. By determining the accumulated dispersion at each fiber extremity, a ratio of dispersion per span length can be obtained and the span's coefficient of chromatic dispersion be inferred, thereby identifying the type of fiber. Alternatively, a signal's signal-to-noise ratio can be scanned, instead of its bit error rate. In a typical network, the required instrumentation is pre-existing.

49. 发明申请

WO2023040960A1 METHOD FOR LONGITUDINAL PERFORMANCE MONITORING OF AN OPTICAL COMMUNICATION LINE 审中-公开
公开(公告)号：WO2023040960A1
公开(公告)日：2023-03-23
申请号：PCT/CN2022/119028
申请日：2022-09-15
申请人： HUAWEI TECHNOLOGIES CO., LTD.
发明人： HAHN, Choloong , JIANG, Zhiping
IPC分类号： H04B10/079 , H04B10/2513 , H04B10/61
摘要： Systems and methods for longitudinal performance monitoring of an optical communication line communicably connecting a transmitting device to a receiving device for transmitting a signal therebetween. The method comprises receiving the signal at the receiving device, the signal having been affected by propagative impairments accumulated along the optical communication line, generating, at the receiving device, a linear signal based on the received signal, generating, based on the linear signal, a plurality of signal templates, and determining correlation values between the received signal and each signal template of the plurality of signal templates, each correlation value being indicative of a local longitudinal performance of the optical communication line.

50. 发明申请

WO2022242463A1 METHOD AND APPARATUS FOR A COMPUTATIONALLY EFFICIENT LIDAR SYSTEM 审中-公开
公开(公告)号：WO2022242463A1
公开(公告)日：2022-11-24
申请号：PCT/CN2022/091060
申请日：2022-05-06
申请人： HUAWEI TECHNOLOGIES CO.,LTD.
发明人： MASSOUD, Ali Ahmed Ali , JIANG, Zhiping
IPC分类号： G01S7/41
摘要： A method of a LiDAR system(100) to determine the distance of an object(150) from the LiDAR system(100). The LiDAR system(100) can use a coarse estimate of the distance of an object(150) from the LiDAR system(100) which is then used by a fast search to determine an estimate of the distance of an object(150) from the LiDAR system(100) within a precision threshold. The LiDAR system(100) can use adaptive precision when determining the distance of an object(150) from the LiDAR system(100).

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