Patents Assigned to NEC Laboratories America, Inc.
  • DISTRIBUTED ACOUSTIC SENSING BASED ACOUSTIC WAVE SPEED SCANNING AND MAPPING OF CIVIL INFRASSTRUCTURES
    Publication number: 20210318165
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS)-distributed acoustic sensing (DAS) based systems, methods, and structures that advantageously enable and/or facilitate the monitoring of civil infrastructures via acoustic wave speed measurements.
    Type: Application
    Filed: April 11, 2021
    Publication date: October 14, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Sarper OZHARAR, Yue TIAN, Yangmin DING, Ting WANG
  • SMART REFRIGERATION USING DISTRIBUTED FIBER OPTIC SENSING
    Publication number: 20210318180
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously enable smart refrigeration systems including retail.
    Type: Application
    Filed: April 10, 2021
    Publication date: October 14, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ming-Fang HUANG, Ting WANG
  • DISTRIBUTED FIBER OPTIC SENSING OF TEMPERATURE USING A POLARIZATION SCRAMBLER
    Publication number: 20210318182
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously achieve single mode fiber distributed temperature sensing (DTS) with improved noise characteristics by employing a polarization scrambler in its optical chain.
    Type: Application
    Filed: April 10, 2021
    Publication date: October 14, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Yaowen LI, Yue-Kai HUANG, Ting WANG
  • DISTRIBUTED ACOUSTIC SENSING BASED NATURAL FREQUENCY MEASUREMENT OF CIVIL INFRASTRUCTURES
    Publication number: 20210318167
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS)—distributed acoustic sensing (DAS) based systems, methods, and structures that advantageously enable and/or facilitate the determination of natural frequency(ies) of civil infrastructures.
    Type: Application
    Filed: April 12, 2021
    Publication date: October 14, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Sarper OZHARAR, Yue TIAN, Yangmin DING, Ting WANG
  • HIGH DYNAMIC RANGE DISTRIBUTED TEMPERATURE SENSING (DTS) USING PHOTON COUNTING DETECTION
    Publication number: 20210318181
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing systems (DFOSa), methods, and structures for distributed temperature sensing (DTS) that 1) employs a GmAPD instead of a traditional LmAPD detector which advantageously produces a 10˜20 dB gain improvement of SNR for a far-end weak signal, thereby improving long range detectability; 2) employs an inventive gating scheme that advantageously and surprisingly overcomes the “dead time” problem for GmAPD working in SPC mode that plagues Geiger mode operation; and 3) third, employs an inventive post-processing technique that advantageously allows our methods to correct any dark noise caused signal distortion.
    Type: Application
    Filed: March 3, 2021
    Publication date: October 14, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Qiang WANG, Yaowen LI
  • HYBRID DISTRIBUTED FIBER OPTIC SENSING
    Publication number: 20210310836
    Abstract: Aspects of the present disclosure describe hybrid distributed fiber optic sensing systems, methods, and structures that advantageously are extensions of existing fiber optic infrastructure and provide distributed fiber optic sensing (DFOS) functionality to the existing infrastructure.
    Type: Application
    Filed: March 9, 2021
    Publication date: October 7, 2021
    Applicants: NEC LABORATORIES AMERICA, INC, NEC Corporation, VERIZON Patent and Licensing Inc.
    Inventors: Ming-Fang HUANG, Ting WANG, Tiejun XIA, Glenn WELLBROCK, Yoshiaki AONO
  • SMART STADIUM APPLICATIONS USING FIBER OPTIC SENSING
    Publication number: 20210310858
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously are employed in smart stadium or other venue applications, such applications including: parking lot security and management; intrusion detection; social sensing; air quality monitoring and early fire detection—among others.
    Type: Application
    Filed: March 8, 2021
    Publication date: October 7, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ming-Fang HUANG, Ting WANG
  • TRAFFIC MONITORING USING DISTRIBUTED FIBER OPTIC SENSING
    Publication number: 20210312801
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously provide traffic monitoring. and traffic management which improves the safety and efficiency of a roadway.
    Type: Application
    Filed: April 4, 2021
    Publication date: October 7, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Philip JI, Eric COSATTO, Ting WANG
  • MULTIPLE LANE REAL-TIME TRAFFIC MONITOR AND VEHICLE ANALYSIS USING DISTRIBUTED FIBER SENSING
    Publication number: 20210312802
    Abstract: An advance in the art is made according to aspects of the present disclosure directed to distributed fiber optic sensing systems (DFOS), methods, and structures that advantageously monitor and identify—in real-time—roadway traffic and patterns across a multiple-lane highway by employing a multiple-transverse fiber optic cable arrangement of optical fiber cable positioned under the highway/roadway to detect, monitor, and/or identify traffic.
    Type: Application
    Filed: April 4, 2021
    Publication date: October 7, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Yueheng CHEN, Ming-Fang HUANG, Ting WANG, Jingnan ZHAO
  • NETWORK SENSING TOPOLOGIES FOR FIBER OPTIC SENSING
    Publication number: 20210314681
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously utilize existing telecommunications facilities that serve as not only to convey telecommunications traffic—but as a sensor medium providing useful sensory information. In sharp contrast to the prior art—a DFOS system when so deployed may advantageously exploit network topologies and optical switches to provide novel sensing features including the detection of environmental events including acoustic, temperature, and vibrational events that may be indicative of societal activity including traffic and/or emergency events.
    Type: Application
    Filed: April 4, 2021
    Publication date: October 7, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ming-Fang HUANG, Ting WANG
  • SPARSE EXCITATION METHOD FOR 3-DIMENSIONAL UNDERGROUND CABLE LOCALIZATION BY FIBER OPTIC SENSING
    Publication number: 20210311186
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing systems, methods, and structures that advantageously are employed to determine the location and depth of underground fiber-optic facilities that may be carrying telecommunications traffic.
    Type: Application
    Filed: March 8, 2021
    Publication date: October 7, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ming-Fang HUANG, Ting WANG, Hansi LIU
  • WIND SPEED MEASUREMENT USING DISTRIBUTED FIBER OPTIC SENSING
    Publication number: 20210311088
    Abstract: Aspects of the present disclosure describe distributed fiber optic sensing (DFOS) systems, methods, and structures that advantageously measure wind speed at utility poles that support fiber optic cables and—in many applications—electrical and/or other communications cables (i.e., cable television).
    Type: Application
    Filed: April 4, 2021
    Publication date: October 7, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ming-Fang HUANG, Ting WANG
  • CONSTANT AMPLITUDE CODED DFOS USING OUT-OF-BAND SIGNALING
    Publication number: 20210314063
    Abstract: 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.
    Type: Application
    Filed: April 4, 2021
    Publication date: October 7, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Yue-Kai HUANG, Ezra IP, Fatih YAMAN
  • DISTRIBUTED SENSING OVER SWITCHED OPTICAL FIBER NETWORKS
    Publication number: 20210266065
    Abstract: Aspects of the present disclosure describe optical fiber sensing systems, methods and structures disclosing a distributed optical fiber sensor network constructed on a switched optical fiber telecommunications infrastructure to detect temperatures, acoustic effects, and vehicle traffic—among others—demonstrated with a number of different network topologies.
    Type: Application
    Filed: September 28, 2020
    Publication date: August 26, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ting WANG, Ming-Fang HUANG, Yaowen LI, Philip JI
  • LOW COMPLEXITY FIBER NONLINEARITY COMPENSATION USING LOOKUP TABLE
    Publication number: 20210256347
    Abstract: Aspects of the present disclosure describe optical transmission systems exhibiting low complexity fiber nonlinearity compensation provided by neural networks using lookup tables for multiplication operations.
    Type: Application
    Filed: January 12, 2021
    Publication date: August 19, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Shinsuke FUJISAWA, Fatih YAMAN, Eduardo Mateo RODRIGUEZ, Yoshihisa INADA, Kohei NAKAMURA, Takanori INOUE
  • INDOOR DISASTER LOCALIZATION VIA HYBRID ETHERNET/OPTICAL FIBER CABLE
    Publication number: 20210258074
    Abstract: Aspects of the present disclosure describe systems, methods and structures providing detection and localization of disaster-related indoor events via hybrid ethernet/optical fiber cable.
    Type: Application
    Filed: January 12, 2021
    Publication date: August 19, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ming-Fang HUANG, Ting WANG
  • DISTRIBUTED OPTICAL FIBER SENSING USING POINT SENSORS
    Publication number: 20210255007
    Abstract: Aspects of the present disclosure describe distributed optical fiber sensing systems, methods, and structures that advantageously employ point sensors that send sensory data/information over an attached, distributed optical fiber sensor without using a separate network or communications facility.
    Type: Application
    Filed: January 12, 2021
    Publication date: August 19, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Junqiang HU, Ting WANG
  • Systems and methods for identifying locations of deployed fiber cables based on vibrations
    Patent number: 11060950
    Abstract: A device may receive, from a sensor device, cable distance data identifying cable distances along a fiber cable to vibrations experienced by the fiber cable, and may receive location data identifying locations associated with the vibrations. The device may correlate the cable distance data and the location data to generate correlated location data, and may store the correlated location data in a data structure. The device may receive, from the sensor device, data identifying a cable distance along the fiber cable to an alarm condition associated with the fiber cable, and may determine a location of the alarm condition based on the correlated location data and the data identifying the cable distance along the fiber cable to the alarm condition. The device may perform actions based on the alarm location.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: July 13, 2021
    Assignees: Verizon Patent and Licensing Inc., NEC Laboratories America, Inc.
    Inventors: Tiejun J. Xia, Glenn A Wellbrock, Ting Wang, Ming-Fang Huang
  • SINGLE MODE FIBER DISTRIBUTED TEMPERATURE SENSING WITH IMPROVED NOISE CHARACTERISTICS
    Publication number: 20210199512
    Abstract: Aspects of the present disclosure describe single mode fiber distributed temperature sensing (DTS) with improved noise characteristics employing superluminescent emitting diodes (SLEDs) and/or amplified spontaneous emission (ASE) light sources.
    Type: Application
    Filed: May 21, 2020
    Publication date: July 1, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Yaowen LI, Ming-Fang HUANG, Shuji MURAKAMI, Philip JI, Ting WANG
  • INFRASTRUCTURE-FREE RF TRACKING IN DYNAMIC INDOOR ENVIRONMENTS
    Publication number: 20210185491
    Abstract: Aspects of the present disclosure describe systems, methods, and structures infrastructure-free RF tracking in dynamic indoor environments.
    Type: Application
    Filed: August 21, 2020
    Publication date: June 17, 2021
    Applicant: NEC LABORATORIES AMERICA, INC
    Inventors: Ayon CHAKRABORTY, Karthikeyan SUNDARESAN, Sampath Mateo RANGARAJAN, Md.Shaifur RAHMAN