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公开(公告)号：US10018558B2
公开(公告)日：2018-07-10
申请号：US15678728
申请日：2017-08-16
Applicant: NEC Laboratories America, Inc.
Inventor： Fatih Yaman , Giovanni Milione , Shaoliang Zhang , Yue-Kai Huang
CPC classification number: G01N21/47 , G01H9/004 , G01K11/32 , G01M11/083 , G01M11/085 , G01N2021/1744 , G01N2021/432 , G01N2021/638 , G02B6/02042
Abstract: A system and method are provided for distributed acoustic sensing in a multicore optical fiber. The system includes a transmitter for simultaneously propagating a sequence of M light pulses through the multicore optical fiber using a spatial mode selected from a set of N spatial modes provided by a spatial mode selector for the transmitter that is coupled to an input to the multicore optical fiber, with M and N being respective integers greater than one. The system further includes a receiver for receiving the sequence of M light pulses at an output of the multicore optical fiber and detecting an environmental perturbation in the multicore optical fiber based on an evaluation of a propagation of the sequence of M light pulses through the multicore optical fiber.
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72.发明申请公开(公告)号：US20180052041A1
公开(公告)日：2018-02-22
申请号：US15678656
申请日：2017-08-16
Applicant: NEC Laboratories America, Inc.
Inventor： Fatih Yaman , Giovanni Milione , Shaoliang Zhang , Yue-Kai Huang
IPC: G01H9/00
CPC classification number: G01N21/47 , G01H9/004 , G01K11/32 , G01M11/083 , G01M11/085 , G01N2021/1744 , G01N2021/432 , G01N2021/638 , G02B6/02042
Abstract: A system and method are provided for distributed acoustic sensing in a multimode optical fiber. The system includes a transmitter for simultaneously propagating a sequence of M light pulses through the multimode optical fiber using a spatial mode selected from a set of N spatial modes provided by a spatial mode selector for the transmitter that is coupled to an input to the multimode optical fiber, with M and N being respective integers greater than one. The system further includes a receiver for receiving the sequence of M light pulses at an output of the multimode optical fiber and detecting an environmental perturbation in the multimode optical fiber based on an evaluation of a propagation of the sequence of M light pulses through the multimode optical fiber.
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公开(公告)号：US09813157B2
公开(公告)日：2017-11-07
申请号：US15062179
申请日：2016-03-06
Applicant: NEC Laboratories America, Inc.
Inventor： Shaoling Zhang , Fatih Yaman , Yue-Kai Huang , Ezra Ip , Yoshihisa Inada
IPC: H04B10/00 , H04B10/2581 , H04L25/03 , H04B10/2543 , H04B10/69
CPC classification number: H04B10/2581 , H04B10/2543 , H04B10/6971 , H04L25/03885
Abstract: Aspects of the present disclosure are directed to the mitigation of multi-path interference from quasi-single-mode fiber using hybrid span configuration and digital signal processing wherein a hybrid span of quasi-single mode fibers and single-mode fibers are used to configure the hybrid span. Additional aspects are directed to introducing a low-baud rate sub-banding signal to reduce the number of DD-LMS taps required when compensating the multi-path interference as the low-baud rate signal requires fewer taps to cover a given range of MPI as compared to a high-baud rate signal. Finally further aspects are directed to an ALMS equalizer which further reduces the number of equalizer taps by shifting its center tap towards the right if higher-order modes transmit slower than a fundamental mode, otherwise the center tap is shifted to the left.
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公开(公告)号：US09602217B2
公开(公告)日：2017-03-21
申请号：US14689094
申请日：2015-04-17
Applicant: NEC Laboratories America, Inc.
Inventor： Yue-Kai Huang , Shaoliang Zhang , Fatih Yaman
IPC: H04B10/00 , H04B10/516 , H04B1/7163
CPC classification number: H04B10/5165 , H04B1/7163
Abstract: The present invention is directed to a controller for generating ultra-wide band electrical signals for high data-rate single optical carrier transmission. The controller includes generating a digitally jointed baseband signal with radio frequency RF up-conversion to create optical dual side bands.
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Patent Agency Ranking
公开(公告)号：US09473244B2
公开(公告)日：2016-10-18
申请号：US14514952
申请日：2014-10-15
Applicant: NEC Laboratories America, Inc.
Inventor： Shaoliang Zhang , Fatih Yaman
CPC classification number: H04B10/40 , H03M13/256 , H04B10/541 , H04B10/612 , H04L1/0041 , H04L1/006 , H04L25/03834 , H04L27/0008 , H04L27/2628 , H04L27/34 , H04L27/362
Abstract: A method of transmitting a data signal is provided that includes integrating a trellis encoder/decoder into a transmitter for 16 quadrative amplitude modulation (QAM) to provide a first and second mode of modulation, wherein each mode has a same baud rate. Data is transmitted from the transmitter at the first mode of modulation with a plurality of first subcarriers with DP16QAM modulation to provide a substantially 400G data transmission rate, or data is transmitted from the transmitter at the second mode of modulation with a plurality of second subcarriers with trellis coded modulation to provide a substantially 1T data transmission rate.
Abstract translation: 提供了一种发送数据信号的方法，其包括将网格编码器/解码器集成到用于16次方振幅调制（QAM）的发射机中以提供第一和第二调制方式，其中每个模式具有相同的波特率。 在具有DP16QAM调制的多个第一子载波的第一调制方式下，从发射机发送数据以提供基本上400G的数据传输速率，或者以第二调制方式从发射机发送数据， 网格编码调制以提供基本上1T的数据传输速率。
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76.发明申请INTRA-TRANSCEIVER OPTICAL SUPERCHANNEL SWITCHING VIA RF SUB-BAND MULTIPLEXING TECHNIQUE 有权通过射频子带多路复用技术的内部收发器光信道切换公开(公告)号：US20160191168A1
公开(公告)日：2016-06-30
申请号：US14934078
申请日：2015-11-05
Applicant: NEC Laboratories America, Inc.
Inventor： Yue-Kai Huang , Shaoliang Zhang , Fatih Yaman , Ting Wang
IPC: H04B10/532 , H04B10/2575 , H04Q11/00
CPC classification number: H04Q11/0001 , H04B10/516 , H04B10/613 , H04B10/616 , H04B10/6166 , H04J14/0298
Abstract: Systems and methods are disclosed for data communication by performing RF sub-band multiplexing and demultiplexing by cascading a radio-frequency (RF) mixing module and optical dual-polarized (DP) QPSK modulator forhybrid RF/optical IQ modulation; and performing intra-transceiver optical superchannel switching through the RF sub-band multiplexing.
Abstract translation: 公开了通过级联射频（RF）混合模块和用于混合RF /光学IQ调制的光学双极化（DP）QPSK调制器进行RF子带复用和解复用的数据通信系统和方法; 以及通过RF子带复用执行收发器内的光学超频道切换。
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77.发明授权Optical nyquist superchannel generation using microwave low-pass filtering and optical equalization 有权使用微波低通滤波和光学均衡的光学奈奎斯特超声波发生器公开(公告)号：US09270379B2
公开(公告)日：2016-02-23
申请号：US14218857
申请日：2014-03-18
Applicant: NEC Laboratories America, Inc.
Inventor： Yue-Kai Huang , Shaoliang Zhang , Fatih Yaman , Dayou Qian
IPC: H04J14/02 , H04B10/50 , H04B10/2507
CPC classification number: H04B10/506 , H04B10/25073 , H04J14/0298
Abstract: Disclosed are structures and methods for generating a Nyquist superchannel.
Abstract translation: 公开了用于产生奈奎斯特超声道的结构和方法。
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78.发明申请公开(公告)号：US20150104186A1
公开(公告)日：2015-04-16
申请号：US14514952
申请日：2014-10-15
Applicant: NEC Laboratories America, Inc.
Inventor： Shaoliang Zhang , Fatih Yaman
CPC classification number: H04B10/40 , H03M13/256 , H04B10/541 , H04B10/612 , H04L1/0041 , H04L1/006 , H04L25/03834 , H04L27/0008 , H04L27/2628 , H04L27/34 , H04L27/362
Abstract: A method of transmitting a data signal is provided that includes integrating a trellis encoder/decoder into a transmitter for 16 quadrative amplitude modulation (QAM) to provide a first and second mode of modulation, wherein each mode has a same baud rate. Data is transmitted from the transmitter at the first mode of modulation with a plurality of first subcarriers with DP16QAM modulation to provide a substantially 400 G data transmission rate, or data is transmitted from the transmitter at the second mode of modulation with a plurality of second subcarriers with trellis coded modulation to provide a substantially 1 T data transmission rate.
Abstract translation: 提供了一种发送数据信号的方法，其包括将网格编码器/解码器集成到用于16次方振幅调制（QAM）的发射机中以提供第一和第二调制方式，其中每个模式具有相同的波特率。 在具有DP16QAM调制的多个第一子载波的第一调制模式下，从发射机发送数据，以提供基本上400G的数据传输速率，或者以第二调制方式从多个第二子载波 具有网格编码调制以提供基本上1T的数据传输速率。
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公开(公告)号：US08917998B2
公开(公告)日：2014-12-23
申请号：US13649161
申请日：2012-10-11
Applicant: NEC Laboratories America, Inc.
Inventor： Shaoliang Zhang , Lei Xu , Junqiang Hu , Fatih Yaman , Ting Wang , Yoshihisa Inada , Takaaki Ogata , Yasuhiro Aoki
IPC: H04B10/04 , H04B10/12 , H04B10/50 , H04J14/06 , H04B10/556
CPC classification number: H04B10/5055 , H04B10/5561 , H04J14/06
Abstract: A method implemented in a transmission apparatus used in an optical fiber communications system for a polarization switched differential quaternary phase-shift keying (DQPSK) signal is disclosed. The method comprises splitting data into two or more data streams, inputting said two or more data streams to 1-bit DQPSK precoders to perform 1-bit DQPSK precoding, and multiplexing inphase outputs of the 1-bit DQPSK precoders to generate a first output; and multiplexing quadrature outputs of the 1-bit DQPSK precoders to generate a second output. Other methods, apparatuses, and systems also are disclosed.
Abstract translation: 公开了一种在用于偏振切换差分四相移键控（DQPSK）信号的光纤通信系统中使用的发送装置中实现的方法。 该方法包括将数据分成两个或更多个数据流，将所述两个或多个数据流输入到1比特DQPSK预编码器以执行1比特DQPSK预编码，以及复用1比特DQPSK预编码器的同相输出以产生第一输出; 以及复用1位DQPSK预编码器的正交输出以产生第二输出。 还公开了其它方法，装置和系统。
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