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公开(公告)号：US10404398B2
公开(公告)日：2019-09-03
申请号：US15912781
申请日：2018-03-06
Applicant: NEC LABORATORIES AMERICA, INC.
Inventor： Ezra Ip , Yue-Kai Huang , Shuji Murakami , Philip Ji
Abstract: Aspects of the present disclosure describe systems, methods, and structures for passive optical add/drop multiplexing (POADM) architectures that remove the prior art requirement of an optical amplifier (i.e., repeater-less) at the POADM nodes.
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52.发明授权公开(公告)号：US10205592B2
公开(公告)日：2019-02-12
申请号：US15279397
申请日：2016-09-28
Applicant: NEC Laboratories America, Inc.
Inventor： Yue-Kai Huang , Fatih Yaman , Ben Wu
Abstract: Aspects of the present disclosure describe methods and systems for improved secure key generation and distribution employing environmental instability induced signal phase fluctuations that are compatible with commercial wavelength division multiplexed (WDM) optical systems and associated optical amplifiers for long-haul transmission.
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公开(公告)号：US10107651B2
公开(公告)日：2018-10-23
申请号：US15811061
申请日：2017-11-13
Applicant: NEC Laboratories America, Inc.
Inventor： Fatih Yaman , Shaoliang Zhang , Ezra Ip , Yue-Kai Huang , Giovanni Milione
Abstract: Methods and systems for Brillouin optical time-domain reflectometry include optically filtering out non-Brillouin signals reflected from a fiber. Brillouin signals reflected from the fiber are coupled with a local oscillator to produce a Brillouin shift signals. The Brillouin shift signals are converted to an electrical domain using a photodetector. The electrical Brillouin shift signals are converted to a digital domain using a low-speed analog-to-digital converter that has a sampling rate below a Nyquist rate sufficient to fully resolve the electrical Brillouin shift signals.
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公开(公告)号：US20180262293A1
公开(公告)日：2018-09-13
申请号：US15912781
申请日：2018-03-06
Applicant: NEC LABORATORIES AMERICA, INC.
Inventor： Ezra Ip , Yue-Kai Huang , Shuji Murakami , Philip Ji
IPC: H04J14/02
CPC classification number: H04J14/0215 , H04J14/0204 , H04J14/0205 , H04J14/0212 , H04J14/023 , H04J14/0282 , H04J14/0295 , H04Q11/0005 , H04Q2011/0016
Abstract: Aspects of the present disclosure describe systems, methods, and structures for passive optical add/drop multiplexing (POADM) architectures that remove the prior art requirement of an optical amplifier (i.e., repeater-less) at the POADM nodes.
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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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Patent Agency Ranking
56.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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59.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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60.发明申请RF Sub-band De-Multiplexing for Ultra-Wide Band Optical Digital Coherent Detection 有权用于超宽带光数字相干检测的RF子带去复用公开(公告)号：US20160149661A1
公开(公告)日：2016-05-26
申请号：US14934708
申请日：2015-11-06
Applicant: NEC Laboratories America, Inc.
Inventor： Yue-Kai Huang , Shaoliang Zhang
IPC: H04J14/00 , H04J14/08 , H04B1/7073
CPC classification number: H04B1/7073 , H04B10/616 , H04J14/02
Abstract: 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.
Abstract translation: 公开了用于通过射频（RF）混合接收数据的系统和方法，以将光检测的电RF频带信号的同相和正交部分下变频到基带用于数据转换; 控制在一个或多个RF混合模块处的本机振荡器（LO）的混合阶段; 在相干光检测之后选择要被下变频到基带的RF子带中的一个; 并对超宽带光数字相干检测进行RF子带解复用。
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