Patents by Inventor Paul S. Westbrook

Paul S. Westbrook 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).

  • Patent number: 10677983
    Abstract: Disclosed herein is an optical fiber having an optically uniform coating having no physical defects in the coating greater than 100 micrometers in size over a length of 50 meters or greater.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: June 9, 2020
    Assignee: OFS Fitel, LLC
    Inventor: Paul S Westbrook
  • Publication number: 20190369650
    Abstract: An optical probe includes an optical source that generates an optical beam that propagates from a proximal end to a distal end of an optical fiber that imparts a transformation of a spatial profile of the optical beam. An optical control device imparts a compensating spatial profile on the optical beam that at least partially compensates for the transformation of the spatial profile of the optical beam imparted by the optical fiber in response to a control signal from a signal processor. A distal optical source generates a calibration light that propagates through the one or more optical waveguides from the distal end to the proximal end of the optical fiber. An optical detector detects the calibration light and generates electrical signals in response to the detected calibration light.
    Type: Application
    Filed: July 28, 2019
    Publication date: December 5, 2019
    Applicants: OFS Fitel, LLC
    Inventors: Eric Swanson, Tristan Kremp, Paul S. Westbrook, David DiGiovanni
  • Patent number: 10401883
    Abstract: An optical probe includes an optical source that generates an optical beam that propagates from a proximal end to a distal end of an optical fiber that imparts a transformation of a spatial profile of the optical beam. An optical control device imparts a compensating spatial profile on the optical beam that at least partially compensates for the transformation of the spatial profile of the optical beam imparted by the optical fiber in response to a control signal from a signal processor. A distal optical source generates a calibration light that propagates through the one or more optical waveguides from the distal end to the proximal end of the optical fiber. An optical detector detects the calibration light and generates electrical signals in response to the detected calibration light.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: September 3, 2019
    Assignees: OFS Fitel, LLC
    Inventors: Eric Swanson, Tristan Kremp, Paul S. Westbrook, David DiGiovanni
  • Publication number: 20190212761
    Abstract: An optical probe includes an optical source that generates an optical beam that propagates from a proximal end to a distal end of an optical fiber that imparts a transformation of a spatial profile of the optical beam. An optical control device imparts a compensating spatial profile on the optical beam that at least partially compensates for the transformation of the spatial profile of the optical beam imparted by the optical fiber in response to a control signal from a signal processor. A distal optical source generates a calibration light that propagates through the one or more optical waveguides from the distal end to the proximal end of the optical fiber. An optical detector detects the calibration light and generates electrical signals in response to the detected calibration light.
    Type: Application
    Filed: January 11, 2018
    Publication date: July 11, 2019
    Applicants: OFS Fitel, LLC
    Inventors: Eric Swanson, Tristan Kremp, Paul S. Westbrook, David DiGiovanni
  • Patent number: 10234385
    Abstract: An optical fiber having at least one fiduciary mark is provided. The at least one fiduciary mark is located at one or more axial positions along the optical fiber. The at least one fiduciary mark is configured to produce at least one change in a backscattering signal in the optical fiber. The at least one change in a backscattering signal may be an abrupt change in the backscattering signal. The abrupt change in the backscattering signal occurs over a length of the optical fiber that is of the order of or less than a spatial resolution of an interrogation system employed to detect the backscattering signal.
    Type: Grant
    Filed: September 16, 2016
    Date of Patent: March 19, 2019
    Assignee: OFS FITEL, LLC
    Inventor: Paul S Westbrook
  • Publication number: 20190033516
    Abstract: Disclosed herein is an optical fiber having an optically uniform coating having no physical defects in the coating greater than 100 micrometers in size over a length of 50 meters or greater.
    Type: Application
    Filed: July 31, 2017
    Publication date: January 31, 2019
    Applicant: OFS Fitel, LLC
    Inventor: Paul S. Westbrook
  • Patent number: 10036849
    Abstract: An arrangement and method that compensates for variation in grating strength associated with forming multiple gratings in multicore fiber is proposed where the writing efficiency of the beam(s) used to form the gratings is controlled to compensate for fiber lensing effects. In one case, a spacing between the multicore optical fiber and the beam source is controlled such that the writing efficiency (which decreases as a function of the space between the source and the fiber) compensates (at least in part) for the increased beam intensity attributed to the lensing effect of the fiber itself. The width of beam itself may also be controlled to modify the writing efficiency.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: July 31, 2018
    Assignee: OFS FITEL, LLC
    Inventor: Paul S Westbrook
  • Publication number: 20170343728
    Abstract: A high backscattering fiber comprising a perturbed segment in which the perturbed segment reflects a relative power that is more than three (3) decibels (dB) above Rayleigh scattering. The high backscattering fiber also exhibits a coupling loss of less than 0.5 dB.
    Type: Application
    Filed: August 16, 2017
    Publication date: November 30, 2017
    Applicant: OFS Fitel, LLC
    Inventors: Tristan Kremp, Paul S Westbrook, Tommy Geisler
  • Patent number: 9766396
    Abstract: A high backscattering fiber comprising a perturbed segment in which the perturbed segment reflects a relative power that is more than three (3) decibels (dB) above Rayleigh scattering. The high backscattering fiber also exhibits a coupling loss of less than 0.5 dB.
    Type: Grant
    Filed: June 7, 2016
    Date of Patent: September 19, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Tristan Kremp, Paul S Westbrook, Tommy Geisler
  • Publication number: 20170192167
    Abstract: A high backscattering fiber comprising a perturbed segment in which the perturbed segment reflects a relative power that is more than three (3) decibels (dB) above Rayleigh scattering. The high backscattering fiber also exhibits a coupling loss of less than 0.5 dB.
    Type: Application
    Filed: March 24, 2017
    Publication date: July 6, 2017
    Applicant: OFS Fitel, LLC
    Inventors: Tristan Kremp, Paul S. Westbrook, Tommy Geisler
  • Patent number: 9592644
    Abstract: A method of, and apparatus for, inscribing a grating in an optical waveguide so as to reduce transverse inscription variations, are provided. The waveguide is exposed to multiple beams or interference patterns of actinic radiation from multiple azimuthal directions. The beams of actinic radiation are preferably split into a plurality of beams that have wave vectors with different longitudinal components, e.g., via gratings such as phase masks. The periods and phases of the interference patterns of the beams of actinic radiation are preferably matched. A control beam may be provided that does not hit the waveguide. A control loop optionally controls at least one of the position or orientation of at least one of the beams of actinic radiation. The gratings are, for example, Bragg gratings.
    Type: Grant
    Filed: March 14, 2014
    Date of Patent: March 14, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Kenneth S Feder, Tristan Kremp, Paul S Westbrook
  • Patent number: 9568670
    Abstract: The disclosed embodiments provide systems and methods for mitigating lensing and scattering as an optical fiber is being inscribed with a grating. The disclosed systems and methods mitigate the lensing phenomenon by surrounding an optical fiber with an index-matching material that is held in a vessel with an integrated interferometer (e.g., phase mask, etc.). The index-matching material has a refractive index that is sufficient to reduce intensity variations of the actinic radiation within the optical fiber. Some embodiments of the system include different vessels for holding the index-matching material, with the vessel having an interferometer integrated into the vessel. These vessels permit the optical fiber to be surrounded by the index-matching material while the gratings are written to the optical fiber.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: February 14, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Kenneth S Feder, Paul S Westbrook
  • Patent number: 9568339
    Abstract: Methods and systems using one or more distributed feedback (DFB) lasers for capturing changes in the lasing environment are disclosed. Specifically, a sensor for measuring a measurand, such as pressure or temperature, or changes in a measurand, includes a fiber with at least one core, at least one fiber laser cavity formed by a single fiber grating in the core, wherein the laser operates on at least two modes along at least part of its length. The DFB laser includes a section that is bent into a non-linear shape and at least one pump laser connected to the fiber laser cavity. When the DFB laser experiences a perturbation or measurand change that changes the spacing of the modes, a change in an RF beat note is generated. This beat note can then be measured and related to the measurand change.
    Type: Grant
    Filed: December 2, 2011
    Date of Patent: February 14, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Kazi S. Abedin, Paul S. Westbrook
  • Patent number: 9547229
    Abstract: The disclosed embodiments provide systems and methods for mitigating lensing and scattering as an optical fiber is being inscribed with a grating. The disclosed systems and methods mitigate the lensing phenomenon by surrounding an optical fiber with an index-matching material that is held in a vessel with a sealed phase mask. The sealed phase mask allows it to be in contact with a liquid index-matching material without having the liquid index-matching material seep into the grooves of the sealed phase mask. Thus, for some embodiments, the sealed phase mask may be immersed in a liquid index-matching material without adversely affecting the function of the phase mask.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: January 17, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Kenneth S Feder, Paul S Westbrook
  • Patent number: 9544051
    Abstract: A method and system for measuring chromatic dispersion, experienced by ASK/PSK modulated optical signals, are provided. Dispersion measurement is enabled either by encoding an additional overhead at lower baud rate or by monitoring signal SOP or RF spectrum of signal SOP. The bulk chromatic dispersion of the link is measured by analyzing the dispersion broadening of the overhead constellation or signal temporal diagram, or time-overlapped signal diagram, or overhead spectrum. This information is used to reduce the computation time required for electronic recovery of a highly dispersed signal.
    Type: Grant
    Filed: May 7, 2012
    Date of Patent: January 10, 2017
    Assignee: OFS FITEL, LLC
    Inventors: Vitaly Mikhailov, Paul S. Westbrook
  • Publication number: 20170003219
    Abstract: An optical fiber having at least one fiduciary mark is provided. The at least one fiduciary mark is located at one or more axial positions along the optical fiber. The at least one fiduciary mark is configured to produce at least one change in a backscattering signal in the optical fiber. The at least one change in a backscattering signal may be an abrupt change in the backscattering signal. The abrupt change in the backscattering signal occurs over a length of the optical fiber that is of the order of or less than a spatial resolution of an interrogation system employed to detect the backscattering signal.
    Type: Application
    Filed: September 16, 2016
    Publication date: January 5, 2017
    Applicant: OFS Fitel, LLC
    Inventor: Paul S. Westbrook
  • Publication number: 20160356709
    Abstract: A high backscattering fiber comprising a perturbed segment in which the perturbed segment reflects a relative power that is more than three (3) decibels (dB) above Rayleigh scattering. The high backscattering fiber also exhibits a coupling loss of less than 0.5 dB.
    Type: Application
    Filed: June 7, 2016
    Publication date: December 8, 2016
    Applicant: OFS Fitel, LLC
    Inventors: Tristan Kremp, Paul S. Westbrook, Tommy Geisler
  • Patent number: 9470588
    Abstract: An optical fiber having at least one fiduciary mark is provided. The at least one fiduciary mark is located at one or more axial positions along the optical fiber. The at least one fiduciary mark is configured to produce at least one change in a Rayleigh backscattering signal in the optical fiber. The at least one change in a Rayleigh backscattering signal may be an abrupt change in the Rayleigh backscattering signal. The abrupt change in the Rayleigh backscattering signal occurs over a length of the optical fiber that is of the order of or less than a spatial resolution of an interrogation system employed to detect the Rayleigh backscattering signal.
    Type: Grant
    Filed: March 10, 2014
    Date of Patent: October 18, 2016
    Assignee: OFS FITEL, LLC
    Inventor: Paul S Westbrook
  • Patent number: 9435942
    Abstract: A method of designing multicore optical fibers is provided. A geometry for the core arrangement is selected. At least one of i) core width, ii) core position with respect to other cores, or iii) orientation with respect to incoming, outgoing, or at least partially traversing radiation such as an inscription beam are optimized. A design space is created in which no core shadows or blocks any other core with respect to incoming, outgoing, or at least partially traversing radiation. Optimization generally includes tracing tangents of core widths against an orthogonal axis and ensuring no overlap of space between said tangents on said axis. For twisted fiber, optimization also includes optimizing effective length and twist rate of the fiber. Devices entailing such fibers, such as multicore pump coupler and multicore fiber distributed feedback laser, are also contemplated.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: September 6, 2016
    Assignee: OFS FITEL, LLC
    Inventor: Paul S Westbrook
  • Patent number: 9429704
    Abstract: The disclosed embodiments provide systems and methods for mitigating lensing and scattering as an optical fiber is being inscribed with a grating. The disclosed systems and methods mitigate the lensing phenomenon by surrounding an optical fiber with a liquid index-matching material that is held in a vessel. The disclosed systems also include a replenishment mechanism that replenishes the liquid index-matching material as the optical fiber is pulled through the vessel.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: August 30, 2016
    Assignee: OFS FITEL, LLC
    Inventors: Kenneth S Feder, Paul S Westbrook