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    DISTRIBUTED FIBER SENSING INTERROGATOR WITH DETACHABLE END
    83.
    发明申请
    DISTRIBUTED FIBER SENSING INTERROGATOR WITH DETACHABLE END 审中-公开

    公开(公告)号：US20200007228A1

    公开(公告)日：2020-01-02

    申请号：US16454056

    申请日：2019-06-27

    Applicant: NEC LABORATORIES AMERICA, INC

    Inventor： Junqiang HU ,  Ting WANG

    IPC: H04B10/071 ,  H04B10/25

    Abstract: Aspects of the present disclosure describe systems, methods and structures for distributed fiber sensing systems including interrogator and attached fiber in which the interrogator includes a common line card and function-specific, pluggable front end in which the line card is configurable and supports different signal processing paths and automatically senses the front-end type and uses corresponding firmware/software or signal processing path(s) to process sensed data.

    VARIABLE BIT-RATE QPSK TRANSMITTER AND METHOD EMPLOYING POLARIZATION MANIPULATION
    87.
    发明申请
    VARIABLE BIT-RATE QPSK TRANSMITTER AND METHOD EMPLOYING POLARIZATION MANIPULATION 有权
    可变比特率QPSK发射机和采用极化操作的方法

    公开(公告)号：US20130108270A1

    公开(公告)日：2013-05-02

    申请号：US13667708

    申请日：2012-11-02

    Applicant: NEC Laboratories America, Inc.

    Inventor： Shaoliang ZHANG ,  Dayou QIAN ,  Junqiang HU ,  Lei XU ,  Ting WANG

    IPC: H04J14/06

    CPC classification number: H04J14/06 ,  H04B10/5055

    Abstract: Disclosed are universal QPSK transmitter structures and methods for generating different QPSK signals exhibiting different polarization schemes, namely PolMux, PolMod and PolSw. The bit rate of the generated signals is variable, thereby allowing the transmitter to adjust to varying network traffic conditions. Advantageously, the generated signals may be detected by analog receivers (PolSw-QPSK) and coherent receivers (PolMux-QPSK, PolMod-QPSK, and PolSw-QPSK).

    Abstract translation: 公开了用于产生表现出不同偏振方案的不同QPSK信号的通用QPSK发射机结构和方法，即PolMux，PolMod和PolSw。 所产生的信号的比特率是可变的，从而允许发射机适应不同的网络业务状况。 有利地，所产生的信号可以由模拟接收机（PolSw-QPSK）和相干接收机（PolMux-QPSK，PolMod-QPSK和PolSw-QPSK）来检测。

    OPTIMUM SIGNAL CONSTELLATION DESIGN FOR HIGH-SPEED OPTICAL TRANSMISSION
    88.
    发明申请
    OPTIMUM SIGNAL CONSTELLATION DESIGN FOR HIGH-SPEED OPTICAL TRANSMISSION 有权
    用于高速光传输的最佳信号协调设计

    公开(公告)号：US20130091398A1

    公开(公告)日：2013-04-11

    申请号：US13646454

    申请日：2012-10-05

    Applicant: NEC Laboratories America, Inc.

    Inventor： Ivan B. DJORDJEVIC ,  Lei XU ,  Ting WANG

    IPC: H03M13/05

    CPC classification number: H04L1/0057 ,  H03M13/116 ,  H03M13/255 ,  H03M13/2957 ,  H03M13/3905 ,  H03M13/3972 ,  H03M13/6331 ,  H04J14/06 ,  H04L1/0003

    Abstract: Systems and methods for data transport, comprising encoding one or more streams of input data with one or more low density parity check (LDPC) encoders, corresponding to one or more polarization/spatial mode branches. One or more encoded data streams are mapped to symbols, wherein the mapper is configured to assign bits of the symbols to a signal constellation and to associate the bits of the symbols with signal constellation points. A signal constellation is formulated which minimizes a mean-square error of the signal constellation representing the source. The optimum signal constellation size is adjusted to improve transmission quality by adjusting the signal constellation an optical signal to noise ratio (OSNR), wherein the signal constellation is selected using a look-up table (LUT); and the symbols are modulated in accordance with the output of the mapper onto a transmission medium.

    Abstract translation: 用于数据传输的系统和方法，包括对应于一个或多个极化/空间模式分支，用一个或多个低密度奇偶校验（LDPC）编码器编码一个或多个输入数据流。 将一个或多个编码数据流映射到符号，其中映射器被配置为将符号的位分配给信号星座并将符号的位与信号星座点相关联。 配置信号星座，其最小化表示源的信号星座的均方误差。 调整最佳信号星座大小以通过调整信号星座图的光信噪比（OSNR）来提高传输质​​量，其中使用查找表（LUT）来选择信号星座; 并且根据映射器的输出将符号调制到传输介质上。

    FIBER COUPLED NETWORK OF SENSORS FOR NEAR-INFRARED SPECTROSCOPY BASED TISSUE OXYGENATION
    89.
    发明申请
    FIBER COUPLED NETWORK OF SENSORS FOR NEAR-INFRARED SPECTROSCOPY BASED TISSUE OXYGENATION 有权

    公开(公告)号：US20250127438A1

    公开(公告)日：2025-04-24

    申请号：US18901562

    申请日：2024-09-30

    Applicant: NEC Laboratories America, Inc.

    Inventor： Sarper OZHARAR ,  Yue TIAN ,  Thomas FERREIRA de LIMA ,  Wataru KOHNO ,  Ting WANG

    IPC: A61B5/1455 ,  A61B5/00

    Abstract: An improved near-infrared spectroscopy based handheld tissue oxygenation scanner and method in which the handheld tissue oxygenation scanner is a small device-like an optical mouse-employing a single transmitter-receiver pair, an optical switch, and a plurality of optical fibers that transmit light into tissue under examination and receive light after interacting with that tissue. The integration of a plurality of optical fibers wherein each individual one provides emission/reception of infrared radiation advantageously provides a higher density of tissue interrogation by the infrared radiation thereby providing faster operation and more information in a given time period. Additional features and advantages of our inventive system and method include computer control and the ability to connect to a variety of computing devices via BlueTooth and other communications techniques.

    RANGE AND CAPABILITY EXTENDING DEVICE FOR PERIMETER INTRUSION DETECTION
    90.
    发明公开
    RANGE AND CAPABILITY EXTENDING DEVICE FOR PERIMETER INTRUSION DETECTION 审中-公开

    公开(公告)号：US20240127681A1

    公开(公告)日：2024-04-18

    申请号：US18485211

    申请日：2023-10-11

    Applicant: NEC Laboratories America, Inc.

    Inventor： Sarper OZHARAR ,  Yue TIAN ,  Yangmin DING ,  Ting WANG

    IPC: G08B13/00 ,  G01V1/00 ,  G01V1/22

    CPC classification number: G08B13/00 ,  G01V1/001 ,  G01V1/226

    Abstract: A solar powered, self-contained DFOS extender that includes a wide-angle camera and a microphone. The DFOS extender monitors the perimeter constantly or at predetermined time intervals both visually and acoustically. It analyses these signals and if an alarming event is detected (such as an animal, a human, a car, or a truck seen or heard), then the DFOS extender generates a coded vibration via its in-built acoustic modem. These coded vibrations are detected by the fiber and an event log is generated. Consequently, a trespasser or false alarms (animals) are detected before they are within detectable distance of the underground DFOS optical sensor fiber. Advantageously, our DFOS extender can be placed in critical locations along a border where an increased detection range is desired and may later be relocated/reinstalled at other locations as well.

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