公开(公告)号：US11461635B2

公开(公告)日：2022-10-04

申请号：US16153018

申请日：2018-10-05

申请人： NEC Laboratories America, Inc.

发明人： Yue-Kai Huang ,  Shaoliang Zhang ,  Ezra Ip ,  Weiyang Mo

IPC分类号： G06N3/08 ,  H04B10/556 ,  G06N3/04 ,  H04B10/077 ,  H04B10/54

摘要： Systems and methods for predicting performance of a modulation system are provided. A neural network model is trained using performance information of a source system. The neural network model is modified with transferable knowledge about a target system to be evaluated. The neural network model is tuned using specific characteristics of the target system to create a source-based target model. The target system performance is evaluated using the source-based target model to predict system performance of the target system.

公开(公告)号：US11296786B2

公开(公告)日：2022-04-05

申请号：US17221837

申请日：2021-04-04

申请人： NEC Laboratories America, Inc.

发明人： Yue-Kai Huang ,  Ezra Ip ,  Fatih Yaman

IPC分类号： H04B10/07 ,  H04B10/079 ,  H04B10/294 ,  H04B10/69 ,  G02B6/02 ,  G01M11/00 ,  H04B10/071 ,  H04J14/02

摘要： Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously overcome problems encountered when operating DFOS systems over operational telecommunications facilities namely, cross-phase modulation, and uneven amplitude profiles through the use of a novel constant amplitude coded DFOS employing out-of-band signaling.

公开(公告)号：US11193801B2

公开(公告)日：2021-12-07

申请号：US16879670

申请日：2020-05-20

申请人： NEC Laboratories America, Inc.

发明人： Ezra Ip ,  Yue-Kai Huang

IPC分类号： G01D5/353 ,  G01L1/24 ,  G01K11/32 ,  G01M11/00 ,  G01K11/322

摘要： Aspects of the present disclosure describe amplifier dynamics compensation through feedback control for distributed fiber sensing systems, methods, and structures employing Brillouin optical time-domain reflectometry.

公开(公告)号：US11133865B2

公开(公告)日：2021-09-28

申请号：US17106143

申请日：2020-11-29

申请人： NEC Laboratories America, Inc.

发明人： Yue-Kai Huang ,  Shaoliang Zhang ,  Ezra Ip ,  Jiakai Yu

IPC分类号： H04B10/079 ,  G06N3/04 ,  H04L27/34 ,  H04B10/07

摘要： Aspects of the present disclosure describe systems, methods. and structures in which a hybrid neural network combining a CNN and several ANNs are shown useful for predicting G-ONSR for Ps-256QAM raw data in deployed SSMF metro networks with 0.27 dB RMSE. As demonstrated, the CNN classifier is trained with 80.96% testing accuracy to identify channel shaping factor. Several ANN regression models are trained to estimate G-OSNR with 0.2 dB for channels with various constellation shaping. Further aspects include the tuning of existing optical networks and the characterization of retrofit/upgraded optical networks to estimate capacity—both aspects employing our inventive hybrid neural network methodology.

公开(公告)号：US10917168B2

公开(公告)日：2021-02-09

申请号：US16719963

申请日：2019-12-18

申请人： NEC Laboratories America, Inc.

发明人： Ming-Fang Huang ,  Yue-Kai Huang ,  Ezra Ip ,  Ting Wang

IPC分类号： H04B10/071 ,  H04B10/077 ,  G01H9/00 ,  G01M11/00

摘要： Aspects of the present disclosure describe systems, methods and structures and applications of optical fiber sensing. Of significance, systems, methods, and structures according to aspects of the present disclosure may reuse and/or retrofit/upgrade existing optical fiber cables as part of optical fiber sensing that may find important societal application including intrusion detection, road traffic monitoring and infrastructure health monitoring. Combining such optical fiber sensing with artificial intelligence (AI) further enables powerful applications at low(er) cost.

公开(公告)号：US09887729B2

公开(公告)日：2018-02-06

申请号：US14934708

申请日：2015-11-06

申请人： NEC Laboratories America, Inc.

发明人： Yue-Kai Huang ,  Shaoliang Zhang

IPC分类号： H04B10/61 ,  H04B1/7073 ,  H04J14/02

CPC分类号： H04B1/7073 ,  H04B10/616 ,  H04J14/02

摘要： Systems and methods are disclosed for receiving data by radio frequency (RF) mixing to down-convert in-phase and quadrature parts of a photo-detected electrical RF band signal to baseband for data conversion; controlling a mixing phase of a electrical local oscillator (LO) at one or more RF mixing modules; selecting one of the RF sub-bands to be down-converted to baseband after coherent photo-detection; and performing RF sub-band de-multiplexing for ultra-wide band optical digital coherent detection.

公开(公告)号：US20150304036A1

公开(公告)日：2015-10-22

申请号：US14689099

申请日：2015-04-17

申请人： NEC Laboratories America, Inc.

发明人： Yue-Kai Huang ,  Shaoliang Zhang ,  Fatih Yaman ,  Ezra Ip

IPC分类号： H04B10/2507 ,  H04B10/25 ,  H04J14/02

CPC分类号： H04B10/25073 ,  H04B10/2543 ,  H04J14/0265

摘要： A controller for generating higher fiber spectral efficiency without using high-order modulation formats includes operating an interleaved bidirectional transmission IBT with sub-Nyquist optical regime exchange reach for spectral efficiency.

摘要翻译： 用于在不使用高阶调制格式的情况下产生较高光纤频谱效率的控制器包括以子奈奎斯特光学方式的交换范围来操作具有频谱效率的交错双向传输IBT。

公开(公告)号：US09088365B2

公开(公告)日：2015-07-21

申请号：US14044530

申请日：2013-10-02

申请人： NEC Laboratories America, Inc.

发明人： Yue Tian ,  Yue-Kai Huang ,  Shaoliang Zhang

IPC分类号： H04B10/00 ,  H04B10/2507 ,  H04B10/2543 ,  H04B10/50 ,  H04B10/61

CPC分类号： H04B10/2507 ,  H04B10/2543 ,  H04B10/50 ,  H04B10/61

摘要： A long haul transmission system uses a digital signal processor DSP instead of an additional optical phase conjugate copier because the optical phase conjugate copier requires high quality optical carrier regeneration to recover the pump and optical PLL to maintain phase matching between signal and pump. Therefore, the use of DSP to process the signal and idler at receiver end greatly simplifies the system setup, increases the system stability and decreases the system cost.

摘要翻译： 长距离传输系统使用数字信号处理器DSP而不是附加的光学相位共轭复印机，因为光学相位共轭复印机需要高质量的光载波再生以恢复泵浦和光学PLL以维持信号和泵之间的相位匹配。 因此，在接收端使用DSP处理信号和空闲信号大大简化了系统设置，提高了系统稳定性，降低了系统成本。

公开(公告)号：US08798480B2

公开(公告)日：2014-08-05

申请号：US13646465

申请日：2012-10-05

申请人： NEC Laboratories America, Inc.

发明人： Yue-Kai Huang ,  Ezra Ip ,  Dayou Qian

IPC分类号： H04B10/04 ,  H04B10/54

CPC分类号： H04B10/541

摘要： Structures and methods of generating 8-QAM signals through the effect of a cascaded I/Q modulator and Mach-Zhender modulator. The 8-QAM signals are generated by applying one binary sequence to the dual-drive Mach-Zehnder modulator (MZM) and two binary sequences to the I/Q modulator. Operationally, the I/Q modulator generates QPSK constellation(s), while the dual drive MZM either maintains the QPSK constellation at an out ring, or attenuates its amplitude to the inner ring and rotates its phase by π/4 phase depending on the binary data it was driven by.

摘要翻译： 通过级联I / Q调制器和Mach-Zhender调制器的影响产生8-QAM信号的结构和方法。 通过将一个二进制序列应用于双驱动马赫 - 曾德调制器（MZM）并将两个二进制序列应用于I / Q调制器来生成8-QAM信号。 在操作上，I / Q调制器产生QPSK星座，而双驱动MZM或者将QPSK星座维持在外环，或者将其振幅衰减到内环，并且根据其中的相位旋转其相位 二进制数据由它驱动。

公开(公告)号：US11463171B2

公开(公告)日：2022-10-04

申请号：US16885190

申请日：2020-05-27

申请人： NEC Laboratories America, Inc.

发明人： Yue-Kai Huang ,  Ezra Ip ,  Philip Nan Ji ,  Ming-Fang Huang

IPC分类号： H04B10/00 ,  H04B10/2543 ,  H04B10/25 ,  H04J14/00

摘要： Aspects of the present disclosure describe systems, methods and structures providing bidirectional optical fiber communication and sensing using the same fiber transmission band and bidirectional WDM fiber sharing such that communications channels and optical fiber sensing channel(s) coexist on the same fiber. As a result, nonlinear interaction between communications channels and interrogating pulse(s) of sensing are much reduced or eliminated.