Patents by Inventor William R. Holland

William R. Holland 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: 10114172
    Abstract: An up-taper is applied by a mode adapter to increase a signal mode area prior to tapering and combining.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: October 30, 2018
    Assignee: OFS FITEL, LLC
    Inventors: William R Holland, Cassandra Thalman
  • Publication number: 20170363810
    Abstract: An up-taper is applied by a mode adapter to increase a signal mode area prior to tapering and combining.
    Type: Application
    Filed: March 30, 2017
    Publication date: December 21, 2017
    Applicant: OFS Fitel, LLC
    Inventors: William R. Holland, Cassandra Thalman
  • Patent number: 9768581
    Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: September 19, 2017
    Assignee: OFS FITEL, LLC
    Inventor: William R Holland
  • Patent number: 9759585
    Abstract: In a TDM- and WDM-based FBG sensor array system, a source emits a light covering a selected wavelength range. The light is amplified and then used to generate a series of pulses that are fed into an array of sensor gratings. The propagation of a pulse through the sensor array results in a time-domain-multiplexed output, comprising a series of output pulses in which each output pulse comprises a reflection of the input pulse at a respective grating in the sensor array. Raman amplification is used to amplify both the pulse input into and the time-domain multiplexed output from the sensor array, which is then coupled into an output processing stage for receiving the sensor output and for reconstructing the wavelength output of each grating in the sensor array. The wavelength change for each grating is then used to calculate a physical parameter(s) to be measured, such as temperature and/or strain.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: September 12, 2017
    Assignee: OFS FITEL, LLC
    Inventors: William R Holland, Yaowen Li, Jeffrey W Nicholson, Yingzhi Sun, Benyuan Zhu
  • Patent number: 9671562
    Abstract: The disclosed embodiments show a fused fiber combiner with sensors that are strategically located at various locations, thereby permitting performance monitoring of the fused fiber combiner. Additionally, the disclosed embodiments show various processes for determining causes of any performance degradations.
    Type: Grant
    Filed: January 24, 2013
    Date of Patent: June 6, 2017
    Assignee: OFS FITEL, LLC
    Inventors: William R Holland, Sean Sullivan, William J Strachan
  • Patent number: 9595803
    Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: March 14, 2017
    Assignee: OFS FITEL, LLC
    Inventor: William R Holland
  • Patent number: 9459407
    Abstract: A waveguide comprises an annular cross-section and a first numerical aperture (NA) at one end. The waveguide further comprises either an annular or circular cross-section at the other end, which has a second NA. The waveguide has a progressively-varying NA, which varies from the first NA (at one end) to the second NA (at the other end).
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: October 4, 2016
    Assignee: OFS FITEL, LLC
    Inventor: William R Holland
  • Publication number: 20160211639
    Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Applicant: OFS FITEL, LLC
    Inventor: William R Holland
  • Publication number: 20160209592
    Abstract: A waveguide comprises an un-tapered end and a tapered end. The waveguide progressively varies a numerical aperture (NA) of light as the light propagates from the tapered end to the un-tapered end.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Inventor: William R Holland
  • Publication number: 20160211640
    Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.
    Type: Application
    Filed: January 21, 2015
    Publication date: July 21, 2016
    Applicant: OFS FITEL, LLC
    Inventor: William R. Holland
  • Patent number: 9377586
    Abstract: A fiber optical coupler comprises a bundle of optical fibers configured to couple light from a multiplicity of input light sources to an output port, each of the fibers comprising a multimode fiber having a core region and a cladding region surrounding the core region. The bundle has first and second axial sections arranged in tandem and adiabatically coupled to one another via a transition zone that includes an optical interface. Within the first section, the ratio of the cross-sectional core area of each of at least some of the fibers to the total cross-sectional area of each of those fibers is given by R1, and within the second section, the ratio of the cross-sectional core area of each of at least some of the fibers to the total cross-sectional area of each of those fibers is given by R2>R1, where R2 is substantially constant along the axial length of the second section.
    Type: Grant
    Filed: September 21, 2011
    Date of Patent: June 28, 2016
    Assignee: OFS FITEL, LLC
    Inventors: William R. Holland, William J. Strachan
  • Patent number: 9362709
    Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: June 7, 2016
    Assignee: OFS FITEL, LLC
    Inventor: William R Holland
  • Patent number: 9322993
    Abstract: As kilowatt class fiber laser and amplifier systems become more in demand, there are ongoing efforts to improve optical fiber laser and amplifier designs to maximize efficiency and further increase the capacity of these high-energy optical fiber lasers and amplifiers. The present disclosure provides a fiber laser or amplifier system configured to efficiently and conveniently generate and couple high numerical aperture and high-energy pump light into a fiber laser or amplifier system.
    Type: Grant
    Filed: January 21, 2015
    Date of Patent: April 26, 2016
    Assignee: OFS FITEL, LLC
    Inventor: William R Holland
  • Publication number: 20160011018
    Abstract: In a TDM- and WDM-based FBG sensor array system, a source emits a light covering a selected wavelength range. The light is amplified and then used to generate a series of pulses that are fed into an array of sensor gratings. The propagation of a pulse through the sensor array results in a time-domain-multiplexed output, comprising a series of output pulses in which each output pulse comprises a reflection of the input pulse at a respective grating in the sensor array. Raman amplification is used to amplify both the pulse input into and the time-domain multiplexed output from the sensor array, which is then coupled into an output processing stage for receiving the sensor output and for reconstructing the wavelength output of each grating in the sensor array. The wavelength change for each grating is then used to calculate a physical parameter(s) to be measured, such as temperature and/or strain.
    Type: Application
    Filed: March 4, 2013
    Publication date: January 14, 2016
    Inventors: William R Holland, Yaowen Li, Jeffrey W Nicholson, Yingzhi Sun, Benyuan Zhu
  • Publication number: 20150372442
    Abstract: A tapered fiber bundle (TFB) with a brightness reduction (R) that is between 0 and approximately 0.65 (or 65%), where R=(1?(di/da)2), di is an ideal output diameter, and da is an actual output diameter. The TFB is optically coupled to a gain fiber with a mode field diameter (MFD) that is between approximately 13 micrometers and approximately 25 micrometers.
    Type: Application
    Filed: January 30, 2015
    Publication date: December 24, 2015
    Inventors: Hao Dong, William R Holland, Jerome C Porque, Sean Sullivan, Thierry F Taunay
  • Patent number: 9211681
    Abstract: Embodiments of the present invention generally relate to laser combiners, and more specifically, to all-fiber devices that combine optical laser power from multiple separate sources such as lasers or amplifiers. In one embodiment, a method of manufacturing a combiner device comprises: positioning an plurality of fibers into a bundle of fibers; drawing the bundle of fibers to create a tapered section, the tapered section having a first outer diameter at an input end, a second outer diameter at an output end, and a taper ratio of at least three; wherein at least one of the fibers of the bundle of fibers comprises an optical waveguide configured for propagating an optical mode from the input end to the output end, and wherein a mode field diameter of the optical mode at the input end is substantially the same as the mode field diameter at the output end.
    Type: Grant
    Filed: June 7, 2013
    Date of Patent: December 15, 2015
    Assignee: OFS FITEL, LLC
    Inventors: William R Holland, Thierry F Taunay
  • Patent number: 9091800
    Abstract: The present disclosure is directed to optical fibers having glass buffers. As such, some embodiments comprise an optical fiber having a core, a cladding, and a glass buffer. For some embodiments, the glass buffer has an index of refraction that is greater than the index of refraction of the cladding.
    Type: Grant
    Filed: March 12, 2014
    Date of Patent: July 28, 2015
    Assignee: OFS FITEL, LLC
    Inventors: William R Holland, Sean Sullivan
  • Publication number: 20150003498
    Abstract: The disclosed embodiments show a fused fiber combiner with sensors that are strategically located at various locations, thereby permitting performance monitoring of the fused fiber combiner. Additionally, the disclosed embodiments show various processes for determining causes of any performance degradations.
    Type: Application
    Filed: January 24, 2013
    Publication date: January 1, 2015
    Inventors: William R. Holland, Sean Sullivan, William J. Strachan
  • Publication number: 20140270644
    Abstract: A waveguide comprises an annular cross-section and a first numerical aperture (NA) at one end. The waveguide further comprises either an annular or circular cross-section at the other end, which has a second NA. The waveguide has a progressively-varying NA, which varies from the first NA (at one end) to the second NA (at the other end).
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: OFS Fitel, LLC
    Inventor: William R. Holland
  • Publication number: 20140270667
    Abstract: The present disclosure is directed to optical fibers having glass buffers. As such, some embodiments comprise an optical fiber having a core, a cladding, and a glass buffer. For some embodiments, the glass buffer has an index of refraction that is greater than the index of refraction of the cladding.
    Type: Application
    Filed: March 12, 2014
    Publication date: September 18, 2014
    Applicant: OFS Fitel, LLC
    Inventors: William R Holland, Sean Sullivan