Patents by Inventor Tiejun J. Xia

Tiejun J. Xia has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20260180679
    Abstract: A device obtains an indication of an object or event detected in a vicinity of a fiber optic network by a Radio Access Network (RAN) of a mobile network using wireless sensing. The device acquires, based on the RAN-detected at least one object or event, one or more of strain, temperature, or vibration data related to the fiber optic network. The device performs a risk assessment related to the fiber optic network based on the RAN-detected object or event and the acquired strain, temperature, and/or vibration data, and communicates results of the risk assessment to an optical fiber network management system, a field technician, or a field engineer.
    Type: Application
    Filed: December 23, 2024
    Publication date: June 25, 2026
    Inventors: Jun Shan Wey, Tiejun J. Xia, Mark T. Watts, Glenn A. Wellbrock
  • Patent number: 12618696
    Abstract: A monitoring system connected to a network may receive a request from a user device over the network to monitor a fiber cable. A fiber sensing device may connect to the monitoring system, may communicate messages with the monitoring system, and may connect to the fiber cable. The fiber sensing device may receive an instruction from the monitoring system to begin a monitoring function for the fiber cable, and may provide a first optical signal to the fiber cable. The fiber sensing device may receive, from the fiber cable, a second optical signal, based on the first optical signal, and may detect a risk to the fiber cable based on the second optical signal. The fiber sensing device may send an alert about the risk to the fiber cable to the monitoring system, and the monitoring system may send the alert over the network to the user device.
    Type: Grant
    Filed: November 20, 2023
    Date of Patent: May 5, 2026
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Jun Shan Wey, Denis A. Khotimsky, Tiejun J. Xia, Gregory K. Sherrill
  • Patent number: 12526043
    Abstract: A device may provide a first optical signal to a destination terminal via a fiber cable and a plurality of sensing repeaters provided at intermediate sites of an ultra-long-haul transport network. The device may receive a second optical signal, based on the first optical signal, via the fiber cable and the plurality of sensing repeaters provided at the intermediate sites of the ultra-long-haul transport network. The device may determine whether the fiber cable has an issue based on the second optical signal, and may perform one or more actions based on whether the fiber cable has an issue.
    Type: Grant
    Filed: August 9, 2023
    Date of Patent: January 13, 2026
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Patent number: 12480807
    Abstract: A device may receive, from a fiber sensor device, sensing data associated with a fiber optic cable, the sensing data being produced by an activity that poses a threat of damage to the fiber optic cable, and the sensing data identifying: amplitudes of vibration signals, frequencies of the vibration signals, patterns of the vibration signals, times associated with the vibration signals, and locations along the fiber optic cable associated with the vibration signals. The device may process, with a machine learning model, the sensing data to determine a threat level of the activity to the fiber optic cable, the machine learning model having been trained based on historical information regarding detected vibrations, historical information regarding sources of the detected vibrations, and historical information regarding threat levels to the fiber optic cable. The device may perform one or more actions based on the threat level to the fiber optic cable.
    Type: Grant
    Filed: December 29, 2023
    Date of Patent: November 25, 2025
    Assignees: Verizon Patent and Licensing Inc., NEC Corporation, NEC Laboratories America, Inc.
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock, Ming-Fang Huang, Ting Wang, Yoshiaki Aono
  • Publication number: 20250253944
    Abstract: A method for monitoring an optical distribution network (ODN) in a passive optical network (PON), comprises establishing at least one data channel between an optical line terminal (OLT) and at least one optical network unit (ONU). The at least one ONU receives a live data traffic signal on at least one of the at least one data channel. The at least one ONU monitors the live data traffic signal for one or more abnormalities. The at least one ONU transmits an alert to the OLT when one or more abnormalities is detected.
    Type: Application
    Filed: February 2, 2024
    Publication date: August 7, 2025
    Inventors: Jun Shan Wey, Denis A. Khotimsky, Gregory K. Sherrill, Tiejun J. Xia
  • Publication number: 20250237575
    Abstract: A device may include a processor. The processor may be configured to send first control signals to optical switches to optically connect embedded optical time domain reflectometers (OTDRs), of an optical network, to optical fibers of the optical network; send second control signals to the OTDRs to measure attenuations of optical signals in the optical fibers; receive measurement data from the OTDRs as results of measuring the attenuations of the optical signals in the optical fibers; process the measurement data; and determine whether the optical fibers meet a performance requirement based on the processed measurement data.
    Type: Application
    Filed: January 23, 2024
    Publication date: July 24, 2025
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Publication number: 20250164308
    Abstract: A device may provide a first optical signal to an optical fiber network via a live fiber cable, the first optical signal including a distributed fiber optic sensing optical signal, and may receive, from the optical fiber network, a second optical signal, based on the first optical signal and via the live fiber cable. The device may determine whether a vibration event associated with the live fiber cable is detected based on the second optical signal, and may perform one or more actions based on whether the vibration event associated with the live fiber cable is detected.
    Type: Application
    Filed: November 20, 2023
    Publication date: May 22, 2025
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: Jun Shan WEY, Denis A. KHOTIMSKY, Tiejun J. XIA, Gregory K. SHERRILL
  • Publication number: 20250164289
    Abstract: A monitoring system connected to a network may receive a request from a user device over the network to monitor a fiber cable. A fiber sensing device may connect to the monitoring system, may communicate messages with the monitoring system, and may connect to the fiber cable. The fiber sensing device may receive an instruction from the monitoring system to begin a monitoring function for the fiber cable, and may provide a first optical signal to the fiber cable. The fiber sensing device may receive, from the fiber cable, a second optical signal, based on the first optical signal, and may detect a risk to the fiber cable based on the second optical signal. The fiber sensing device may send an alert about the risk to the fiber cable to the monitoring system, and the monitoring system may send the alert over the network to the user device.
    Type: Application
    Filed: November 20, 2023
    Publication date: May 22, 2025
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: Jun Shan WEY, Denis A. KHOTIMSKY, Tiejun J. XIA, Gregory K. SHERRILL
  • Publication number: 20250060277
    Abstract: A cable identification system is provided. The cable identification system may include a laser pulse generator configured to emit laser pulses into the first optical-fiber cable segment. The cable identification system may include a polarization disturbance device configured to induce a change in polarization of a second optical-fiber cable segment via changing a position of the second optical-fiber cable segment. The cable identification system may include a polarization detection device configured to determine measures of polarization based upon backscattered light received from the first optical-fiber cable segment when the second optical-fiber cable segment has different positions. The polarization detection device may be configured to determine whether the first optical-fiber cable segment is connected to the second optical-fiber cable segment based upon the measures of polarization.
    Type: Application
    Filed: November 1, 2024
    Publication date: February 20, 2025
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Publication number: 20250055563
    Abstract: A device may provide a first optical signal to a destination terminal via a fiber cable and a plurality of sensing repeaters provided at intermediate sites of an ultra-long-haul transport network. The device may receive a second optical signal, based on the first optical signal, via the fiber cable and the plurality of sensing repeaters provided at the intermediate sites of the ultra-long-haul transport network. The device may determine whether the fiber cable has an issue based on the second optical signal, and may perform one or more actions based on whether the fiber cable has an issue.
    Type: Application
    Filed: August 9, 2023
    Publication date: February 13, 2025
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. XIA, Glenn A. WELLBROCK
  • Patent number: 12117798
    Abstract: A device may receive sensing data that is produced by an environment associated with a fiber optic cable. Based on the sensing data, the device may determine a sensing profile, which indicates a measure of vibration as a function of distance along the fiber optic cable and as a function of time. The device may receive new sensing data produced by the environment. The device may determine that the new sensing data satisfies a vibration deviation criteria, relative to the sensing profile, for a duration threshold. By satisfying the vibration deviation criteria for the duration threshold, the new sensing data may indicate that the environment includes an activity associated with an increased likelihood of damage to the fiber optic cable relative to the sensing data. The device may perform one or more actions based on the new sensing data satisfying the vibration deviation criteria for the duration threshold.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: October 15, 2024
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Patent number: 12088977
    Abstract: A device may comprise a first portion and a second portion. The first portion may comprise a plurality of slots configured to receive a plurality of fiber optic cables. Each fiber optic cable may be received in a respective slot of the plurality of slots. The second portion may comprise a plurality of protruding members configured to bend the plurality of fiber optic cables, received in the first portion, to cause the plurality of fiber optic cables to emit light. The second portion may further comprise the light detection unit. The light detection unit may be configured to determine whether light emitted by a fiber optic cable is detected; and provide an indication regarding a port of the plurality of ports based on determining that the light, emitted by the fiber optic cable, is detected. The fiber optic cable may be connected to the port.
    Type: Grant
    Filed: June 24, 2022
    Date of Patent: September 10, 2024
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. Xia, Glenn A Wellbrock
  • Patent number: 12040832
    Abstract: A device may provide a signal with a first wavelength and a second wavelength to a fiber cable, and may receive an intensity change measurement of backscattered light based on the first wavelength of the signal. The device may receive a differential phase change measurement of the backscattered light based on the second wavelength of the signal, and may determine whether there is a fiber loss change, a fiber length change, and/or a fiber cut associated with the fiber cable based on the intensity change measurement. The device may determine whether there is an abnormal event associated with the fiber cable based on the differential phase change measurement, and may report one or more of the fiber loss change, the fiber length change, the fiber cut, or the abnormal event.
    Type: Grant
    Filed: October 19, 2022
    Date of Patent: July 16, 2024
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Publication number: 20240235673
    Abstract: A device may provide a signal with a first wavelength and a second wavelength to a fiber cable, and may receive an intensity change measurement of backscattered light based on the first wavelength of the signal. The device may receive a differential phase change measurement of the backscattered light based on the second wavelength of the signal, and may determine whether there is a fiber loss change, a fiber length change, and/or a fiber cut associated with the fiber cable based on the intensity change measurement. The device may determine whether there is an abnormal event associated with the fiber cable based on the differential phase change measurement, and may report one or more of the fiber loss change, the fiber length change, the fiber cut, or the abnormal event.
    Type: Application
    Filed: October 19, 2022
    Publication date: July 11, 2024
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. XIA, Glenn A. WELLBROCK
  • Patent number: 12025847
    Abstract: A device may provide, to a user device, a first message instructing a technician to move fiber cables and may receive a first signal based on the technician moving the fiber cables and a rest signal based on the technician stopping movement of the fiber cables. The device may calculate a distance, an average peak signal, and a baseline signal based on the first signal and the rest signal and may calculate a data collection window based on the distance, the average peak signal, and the baseline signal. The device may provide, to the user device, a second message instructing the technician to move one fiber cable at a time and may receive second signals based on the technician moving one fiber cable at a time. The device may provide, for display to the user device, the data collection window and indications of the second signals.
    Type: Grant
    Filed: June 2, 2023
    Date of Patent: July 2, 2024
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Publication number: 20240133735
    Abstract: A device may receive, from a fiber sensor device, sensing data associated with a fiber optic cable, the sensing data being produced by an activity that poses a threat of damage to the fiber optic cable, and the sensing data identifying: amplitudes of vibration signals, frequencies of the vibration signals, patterns of the vibration signals, times associated with the vibration signals, and locations along the fiber optic cable associated with the vibration signals. The device may process, with a machine learning model, the sensing data to determine a threat level of the activity to the fiber optic cable, the machine learning model having been trained based on historical information regarding detected vibrations, historical information regarding sources of the detected vibrations, and historical information regarding threat levels to the fiber optic cable. The device may perform one or more actions based on the threat level to the fiber optic cable.
    Type: Application
    Filed: December 29, 2023
    Publication date: April 25, 2024
    Applicants: Verizon Patent and Licensing Inc., NEC Laboratories America, Inc., NEC Corporation
    Inventors: Tiejun J. XIA, Glenn A. WELLBROCK, Ming-Fang HUANG, Ting WANG, Yoshiaki AONO
  • Publication number: 20240137118
    Abstract: A device may provide a signal with a first wavelength and a second wavelength to a fiber cable, and may receive an intensity change measurement of backscattered light based on the first wavelength of the signal. The device may receive a differential phase change measurement of the backscattered light based on the second wavelength of the signal, and may determine whether there is a fiber loss change, a fiber length change, and/or a fiber cut associated with the fiber cable based on the intensity change measurement. The device may determine whether there is an abnormal event associated with the fiber cable based on the differential phase change measurement, and may report one or more of the fiber loss change, the fiber length change, the fiber cut, or the abnormal event.
    Type: Application
    Filed: October 18, 2022
    Publication date: April 25, 2024
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. XIA, Glenn A. WELLBROCK
  • Patent number: 11916588
    Abstract: In some implementations, a device may transmit communication data to a transceiver via an access fiber optic cable. The device may determine that fiber sensing is to be performed for the access fiber optic cable. The device may cease transmission of the communication data for a predetermined time period. The device may generate an optical pulse after ceasing transmission of the communication data. The device may transmit the optical pulse to the transceiver via the access fiber optic cable. The device may receive, prior to expiration of the predetermined time period, a reflected signal from the access fiber optic cable based on the optical pulse. The device may analyze the reflected signal to generate sensing results. The device may perform one or more actions based on the sensing results.
    Type: Grant
    Filed: April 5, 2021
    Date of Patent: February 27, 2024
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock
  • Patent number: 11874160
    Abstract: A device may receive, from a fiber sensor device, sensing data associated with a fiber optic cable, the sensing data being produced by an activity that poses a threat of damage to the fiber optic cable, and the sensing data identifying: amplitudes of vibration signals, frequencies of the vibration signals, patterns of the vibration signals, times associated with the vibration signals, and locations along the fiber optic cable associated with the vibration signals. The device may process, with a machine learning model, the sensing data to determine a threat level of the activity to the fiber optic cable, the machine learning model having been trained based on historical information regarding detected vibrations, historical information regarding sources of the detected vibrations, and historical information regarding threat levels to the fiber optic cable. The device may perform one or more actions based on the threat level to the fiber optic cable.
    Type: Grant
    Filed: November 3, 2020
    Date of Patent: January 16, 2024
    Assignees: Verizon Patent and Licensing Inc., NEC Laboratories America, Inc., NEC Corporation
    Inventors: Tiejun J. Xia, Glenn A. Wellbrock, Ming-Fang Huang, Ting Wang, Yoshiaki Aono
  • Publication number: 20230421932
    Abstract: A device may comprise a first portion and a second portion. The first portion may comprise a plurality of slots configured to receive a plurality of fiber optic cables. Each fiber optic cable may be received in a respective slot of the plurality of slots. The second portion may comprise a plurality of protruding members configured to bend the plurality of fiber optic cables, received in the first portion, to cause the plurality of fiber optic cables to emit light. The second portion may further comprise the light detection unit. The light detection unit may be configured to determine whether light emitted by a fiber optic cable is detected; and provide an indication regarding a port of the plurality of ports based on determining that the light, emitted by the fiber optic cable, is detected. The fiber optic cable may be connected to the port.
    Type: Application
    Filed: June 24, 2022
    Publication date: December 28, 2023
    Applicant: Verizon Patent and Licensing Inc.
    Inventors: Tiejun J. XIA, Glenn A. WELLBROCK