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公开(公告)号：US12088337B2
公开(公告)日：2024-09-10
申请号：US17963341
申请日：2022-10-11
发明人： Zhiping Jiang
CPC分类号： H04B10/075 , H04B10/614 , H04B10/674 , H04B10/40 , H04B10/50 , H04B10/60
摘要： The disclosed systems and methods for detecting a location of reflection in an optical link comprising: i) receiving an optical signal; ii) receiving a plurality of first type of delayed optical signals corresponding to the optical signal; iii) determining a first type of time delays associated with each of the plurality of first type of delayed optical signals; iv) receiving a plurality of second type of delayed optical signals corresponding to the optical signal; v) determining a second type of time delays associated with the each of the plurality of second type of delayed optical signals; vi) computing relative delays from the second type of time delays; vii) comparing the relative delays with the first type of time delays; and viii) determining a location of a given optical element contributing to the reflections based on the given relative delay and the location of the AR.
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公开(公告)号：US11190272B1
公开(公告)日：2021-11-30
申请号：US17127305
申请日：2020-12-18
发明人： Zhiping Jiang
IPC分类号： H04B10/079 , H04B10/2537
摘要： There is provided a method and apparatus for evaluating nonlinear impairment of an optical fiber link. The method includes partitioning a natural span of the optical fiber link into multiple sub-spans, each of the multiple sub-spans determined based on chromatic dispersion (CD) equivalence; The method further includes for each of the multiple sub-spans, acquiring sub-span function parameters and a sub-span input power indicative of input power at a particular sub-span, the sub-span function parameters including noise variance and correlations between the particular sub-span and others of the multiple sub-spans. The method additionally includes determining the nonlinear impairment of the optical fiber link based on the sub-span input power and the sub-span function parameters acquired for each of the multiple sub-spans.
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公开(公告)号：US11061113B2
公开(公告)日：2021-07-13
申请号：US17037844
申请日：2020-09-30
IPC分类号： G01S7/41 , G01S13/04 , G01S13/524 , G01S7/292
摘要： The disclosed systems, structures, and methods are directed to an object detection system, employing a receiver configured to receive a signal reflected from an object, an analog-to-digital converter (ADC) configured to convert the received signal into a digital signal, a pre-processor configured to improve a signal-to-noise (SNR) of the digital signal and to generate a pre-processed signal corresponding to the digital signal, a parameter extractor configured to calculate a number of reference cells M and a multiplication factor K0, and a Constant False Alarm Rate (CFAR) processor configured to analyze a cell-under-test (CUT) and M reference cells in accordance with the number of reference cells M and the multiplication factor K0 to detect the presence of the object.
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公开(公告)号：US20180102840A1
公开(公告)日：2018-04-12
申请号：US15336130
申请日：2016-10-27
发明人： Zhiping Jiang , Jianhong Ke , Dajiang Jin
IPC分类号： H04B10/079 , H04L5/00 , H04J14/02
CPC分类号： H04B10/07953 , H04B10/0775 , H04J14/02 , H04L5/0048
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.
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公开(公告)号：US20170244479A1
公开(公告)日：2017-08-24
申请号：US15074243
申请日：2016-03-18
发明人： Zhiping Jiang , Minggang Si , Dajiang Jin , Xiaodong Luo , Jianhong Ke
IPC分类号： H04B10/079 , H04J14/02 , H04B10/516
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.
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公开(公告)号：US09712232B2
公开(公告)日：2017-07-18
申请号：US14872484
申请日：2015-10-01
发明人： Zhiping Jiang , Demin Yao , Xiaodong Luo , Yansui Huang
IPC分类号： H04B10/071 , G01M11/00 , H04B10/077
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.
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公开(公告)号：US20160323660A1
公开(公告)日：2016-11-03
申请号：US15205670
申请日：2016-07-08
发明人： Zhiping Jiang , Chen Chen , Zhuhong Zhang , Chuandong Li
IPC分类号： H04Q11/00 , H04B10/50 , H04B10/572 , H04B10/25
摘要： An optical circuit switching matrix includes a plurality of optical ports, each optical port being optically coupled to a respective one of a plurality of user nodes and an optical coupler having at least one input port optically coupled to the plurality of optical ports, and an output port. The optical circuit switching matrix also includes a wavelength demultiplexer having an input optically coupled to the output port of the optical coupler, and a plurality of output ports, each output port being optically coupled to a respective one of the plurality of optical ports.
摘要翻译： 光学电路切换矩阵包括多个光学端口，每个光学端口光耦合到多个用户节点中的相应一个用户节点，以及光耦合器，该光耦合器具有光耦合到多个光学端口的至少一个输入端口，以及输出端 港口。 光电路切换矩阵还包括具有光耦合到光耦合器的输出端口的输入的波长解复用器和多个输出端口，每个输出端口光耦合到多个光端口中的相应一个光端口。
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公开(公告)号：US20160277101A1
公开(公告)日：2016-09-22
申请号：US14872484
申请日：2015-10-01
发明人： Zhiping Jiang , Demin Yao , Xiaodong Luo , Yansui Huang
IPC分类号： H04B10/077 , 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向光监控信道应用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。
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公开(公告)号：US20160261364A1
公开(公告)日：2016-09-08
申请号：US14877280
申请日：2015-10-07
发明人： Zhiping Jiang , Chen Chen , Zhuhong Zhang , Chuandong Li
IPC分类号： H04J14/02
CPC分类号： H04Q11/0005 , H04B10/25 , H04B10/503 , H04B10/572 , H04J14/021 , H04J14/0275 , H04J14/0282 , H04Q2011/0015 , H04Q2011/0016 , H04Q2011/0018 , H04Q2011/0032 , H04Q2011/0033 , H04Q2011/0039 , H04Q2011/0041 , H04Q2011/005 , H04Q2011/0058
摘要： An optical circuit switching matrix includes a plurality of optical ports, each optical port being optically coupled to a respective one of a plurality of user nodes and an optical coupler having at least one input port optically coupled to the plurality of optical ports, and an output port. The optical circuit switching matrix also includes a wavelength demultiplexer having an input optically coupled to the output port of the optical coupler, and a plurality of output ports, each output port being optically coupled to a respective one of the plurality of optical ports.
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公开(公告)号：US09419719B2
公开(公告)日：2016-08-16
申请号：US14219799
申请日：2014-03-19
发明人： Zhiping Jiang , Chen Chen , Zhuhong Zhang , Chuandong Li
IPC分类号： H04J14/02 , H04B10/532 , H04B10/556 , H04B10/50
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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