公开(公告)号：US10162121B2

公开(公告)日：2018-12-25

申请号：US15907777

申请日：2018-02-28

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B. Djordjevic ,  Shaoliang Zhang ,  Ting Wang

IPC: G02B6/35

Abstract: A method and switch are provided for reconfigurable optical space switch. The method includes receiving a control signal, from a controller, to configure a path through the reconfigurable optical space switch. The method also includes applying a voltage to one or more direction changing devices at each intersection between each of the east-west optical waveguides and each of the north-south optical waveguides to form the path through the reconfigurable optical space switch. The method additionally includes receiving an optical signal in one of a plurality of passive waveguides at a beginning of the path, including the plurality of east-west optical waveguides and the plurality of north-south optical waveguides. The method further includes outputting the optical signal out on of the plurality of passive waveguides at an end of the path.

公开(公告)号：US20180252870A1

公开(公告)日：2018-09-06

申请号：US15907777

申请日：2018-02-28

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B. Djordjevic ,  Shaoliang Zhang ,  Ting Wang

IPC: G02B6/35

CPC classification number: G01D5/35383 ,  G01D5/268 ,  G02B5/32 ,  G02B6/3512 ,  G02B6/3546 ,  G02B6/356 ,  G02B6/3584 ,  G02B26/0833 ,  H04J14/06 ,  H04L63/0428 ,  H04L67/12 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0024 ,  H04Q2011/0081 ,  H04Q2011/0088 ,  H04Q2011/0094 ,  H04W4/90 ,  H04W84/18

Abstract: A method and switch are provided for reconfigurable optical space switch. The method includes receiving a control signal, from a controller, to configure a path through the reconfigurable optical space switch. The method also includes applying a voltage to one or more direction changing devices at each intersection between each of the east-west optical waveguides and each of the north-south optical waveguides to form the path through the reconfigurable optical space switch. The method additionally includes receiving an optical signal in one of a plurality of passive waveguides at a beginning of the path, including the plurality of east-west optical waveguides and the plurality of north-south optical waveguides. The method further includes outputting the optical signal out on of the plurality of passive waveguides at an end of the path.

公开(公告)号：US20180252557A1

公开(公告)日：2018-09-06

申请号：US15907864

申请日：2018-02-28

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan B. Djordjevic ,  Shaoliang Zhang ,  Ting Wang

IPC: G01D5/353 ,  G01D5/26 ,  G02B26/08 ,  G02B5/32

CPC classification number: G01D5/35383 ,  G01D5/268 ,  G02B5/32 ,  G02B6/3512 ,  G02B6/3546 ,  G02B6/356 ,  G02B6/3584 ,  G02B26/0833 ,  H04J14/06 ,  H04L63/0428 ,  H04L67/12 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0024 ,  H04Q2011/003 ,  H04Q2011/0064 ,  H04Q2011/0081 ,  H04Q2011/0088 ,  H04Q2011/0094 ,  H04W4/90 ,  H04W84/18

Abstract: A four-dimensional multiplexing method and four-dimensional multiplexing system are provided for optical networks. The method includes receiving sensor data to be transmitted on an optical network. The method also includes encoding the sensor data into an optical signal employing one or more multiplexing systems. The method additionally includes transmitting the optical signal over the optical network. The method further includes decoding the optical signal into the sensor data employing the one or more multiplexing systems. The method also includes controlling an operation of a processor-based machine responsive to the sensor data.

公开(公告)号：US20180234236A1

公开(公告)日：2018-08-16

申请号：US15897930

申请日：2018-02-15

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan Djordjevic ,  Ting Wang ,  Shaoliang Zhang

IPC: H04L9/08 ,  H04J14/02 ,  H04B10/70

CPC classification number: H04L9/0852 ,  H01Q3/26 ,  H01Q3/28 ,  H01Q3/34 ,  H01Q3/38 ,  H01Q21/00 ,  H04B7/0413 ,  H04B10/11 ,  H04B10/505 ,  H04B10/516 ,  H04B10/70 ,  H04J14/0227 ,  H04J14/0298 ,  H04J14/04 ,  H04L27/345 ,  H04L27/3477 ,  H04L27/36 ,  H04L27/362 ,  H04L27/38

Abstract: Systems and methods for quantum key distribution using orbital angular momentum (OAM)-modes-enabled secure multidimensional coded modulation. The quantum key distribution including symbols of a raw key across subcarriers and multiplexing the subcarriers to form an electrical carrier. Then optically modulating the electrical carrier with an electro-optical modulator using an optical signal. The optically modulated electrical carrier is then imposed on a pre-determined OAM mode using an optical OAM multiplexer, attenuated, and transmitted across a quantum channel. A receiver then receives the transmitted signal and demultiplexes it with an optical OAM demultiplexer to extract projections. The projections then undergo optical-to-electrical conversion using a coherent optical detector with an optical signal from a local oscillator. A resulting estimated electrical carrier is then demultiplexed into subcarriers. The subcarrier undergo phase noise cancellation and subsequent demodulation to extract estimated symbol constellation points corresponding the symbols of the raw key.

公开(公告)号：US09810627B2

公开(公告)日：2017-11-07

申请号：US15269586

申请日：2016-09-19

Applicant: NEC Laboratories America, Inc.

Inventor： Ming-Fang Huang ,  Lei Tao ,  Yue Tian ,  Ting Wang

IPC: G01N21/00 ,  G01N21/59 ,  B60R11/04 ,  B64B1/40 ,  B64C39/02 ,  G01S3/786 ,  G01S17/06 ,  G01S19/13 ,  G01S17/66 ,  G01S17/88 ,  G01S7/48 ,  G01N33/00 ,  G01N21/17

CPC classification number: G01N21/59 ,  B60R11/04 ,  B64B1/40 ,  B64C39/024 ,  B64C2201/12 ,  G01N33/0062 ,  G01N2021/1795 ,  G01N2201/061 ,  G01N2201/06113 ,  G01N2201/0612 ,  G01N2201/062 ,  G01N2201/0636 ,  G01S3/786 ,  G01S7/4802 ,  G01S17/06 ,  G01S17/66 ,  G01S17/88 ,  G01S19/13

Abstract: Systems and methods for generating a three-dimensional gas map includes a remote vehicle including reflective material. A positioning stage including multidimensional movement to track the remote vehicle. A light head to reflect light off of the remote vehicle. A controller to analyze received light to determine gas content and generate a three-dimensional gas map.

公开(公告)号：US09742489B2

公开(公告)日：2017-08-22

申请号：US14961236

申请日：2015-12-07

Applicant: NEC Laboratories America, Inc.

Inventor： Yawei Yin ,  Konstantinos Kanonakis ,  Philip Ji ,  Ting Wang ,  Shinya Nakamura

IPC: H04B10/038 ,  H04B10/032 ,  H04B10/079 ,  H04Q11/00

CPC classification number: H04B10/038 ,  H04B10/032 ,  H04B10/0793 ,  H04B10/0795 ,  H04B10/07955 ,  H04Q11/0005

Abstract: Systems and methods are disclosed for data communication by forming a hybrid that includes an electrical switching network with packet granularity of switching and store-and-forward forwarding services to network traffic and an optical switching network providing circuit granularity of switching and optical bypassing services to network traffic; applying local control of optical switching modules in the optical switching network with a network controller coupled to the electrical switching network, the optical switching network, and a loss-of-light detection module; and detecting loss-of-light in a failure point in the optical switching network and rerouting traffic to avoid the optical failure point.

公开(公告)号：US09735921B2

公开(公告)日：2017-08-15

申请号：US15138184

申请日：2016-04-25

Applicant: NEC Laboratories America, Inc.

Inventor： Ivan Djordjevic ,  Ting Wang

IPC: H04B10/04 ,  H04L1/00 ,  H03M13/11 ,  H04B10/516

CPC classification number: H04L1/0058 ,  H03M13/1102 ,  H04B10/516 ,  H04L1/0041 ,  H04L1/0057

Abstract: A low-density parity-check (LDPC) coded bit-interleaved coded modulation with iterative decoding (BICM-ID) scheme with nonuniform signaling which is effected by mapping simple variable-length prefix codes onto the constellation. By employing Huffman procedure(s), prefix codes can be designed to approach optimal performance. Experimental evaluations of the schemes demonstrate that the nonuniform scheme performs better than 8-QAM by at least 8.8 dB.

公开(公告)号：US09654209B2

公开(公告)日：2017-05-16

申请号：US15090642

申请日：2016-04-05

Applicant: NEC Laboratories America, Inc.

Inventor： Philip Nan Ji ,  Ting Wang ,  Ryuji Aida

IPC: H04B10/00 ,  H04B10/032 ,  H04J14/02 ,  H04B10/25 ,  H04Q11/00

CPC classification number: H04B10/032 ,  H04B10/2503 ,  H04J14/0204 ,  H04J14/0205 ,  H04J14/0212 ,  H04J14/0216 ,  H04J14/0297 ,  H04Q11/0005 ,  H04Q2011/0043

Abstract: A communication system includes a primary module with: first trunk and branch input and output ports, each coupled to first in/out couplers, the first in/out couplers coupled to first circulators, and the circulators in turn coupled to first central couplers; second trunk branch input and output ports, each coupled to second in/out couplers, each of second in/out couplers coupled to second circulators; and first and second bidirectional wavelength-selective switches (WSSes) coupled to the first central couplers. The system also includes a secondary module with first trunk and branch input and output ports, each coupled to first in/out couplers, the first in/out couplers coupled to third circulators, and the circulators in turn coupled to second central couplers; second trunk branch input and output ports, each coupled to second in/out couplers, each of second in/out couplers coupled to fourth circulators, and third and fourth bidirectional wavelength-selective switches (WSSes) coupled to the second central couplers. The system further includes one or more 2×2 switches coupling the primary module WSS outputs with the secondary module WSS outputs.

公开(公告)号：US20170112383A1

公开(公告)日：2017-04-27

申请号：US15271031

申请日：2016-09-20

Applicant: NEC Laboratories America, Inc.

Inventor： Giovanni Milione ,  Philip Nan Ji ,  Ting Wang ,  Thien An Nguyen

IPC: A61B5/00 ,  A61B5/117 ,  A61B5/02

Abstract: Systems and methods for imaging a three-dimensional (3D) biometric object, including receiving the 3D biometric object into a scanning area. An image of the 3D biometric object is generated using photo-acoustic tomography by illuminating one or more veins in the 3D biometric object using a light source, and detecting acoustic waves resulting from absorption of light from the light source by the one or more veins. A 3D vein image is output based on the acoustic waves detected.

公开(公告)号：US09537757B2

公开(公告)日：2017-01-03

申请号：US14454957

申请日：2014-08-08

Applicant: NEC Laboratories America, Inc.

Inventor： Junqiang Hu ,  Yoshinobu Ooto ,  Kazuo Takagi ,  Yoshiaki Aono ,  Ting Wang

IPC: H04L12/707 ,  H04L12/735 ,  H04L12/709 ,  H04L12/703 ,  H04L12/801

CPC classification number: H04L45/22 ,  H04L45/1283 ,  H04L45/245 ,  H04L45/28 ,  H04L47/34 ,  Y02D50/30

Abstract: A method is provided for traffic aggregation in a hitless protected packet switched network having source and destination nodes. The method includes enabling a working path and a protecting path between the source and destination nodes. The working path is non-overlapping with respect to the protecting path. The method includes generating, using a processor, internal marker packets at working and protecting input ports of the source nodes. Each market packet represents a respective marker time period. The method includes transmitting the marker packets to working and protecting output ports of the source nodes, by the working and protecting input ports of the source nodes. The method includes selectively aggregating, at each of the working and protecting output ports of the source nodes, hitless traffic sent from different working and protecting inputs ports of the source nodes to provide an aggregated flow there from, responsive to the marker packets.

Abstract translation: 提供了一种用于具有源和目的地节点的无中继保护分组交换网络中的业务聚合的方法。 该方法包括启用源节点和目的节点之间的工作路径和保护路径。 工作路径与保护路径不重叠。 该方法包括在工作和保护源节点的输入端口时生成使用处理器的内部标记分组。 每个市场包代表相应的标记时间段。 该方法包括通过工作和保护源节点的输入端口，将标记数据包发送到工作和保护源节点的输出端口。 该方法包括在源节点的每个工作和保护输出端口选择性地聚合来自源节点的不同工作和保护输入端口的无中断业务，从而响应于标记分组来提供聚合流。