Patents by Inventor Joseph Krystkowiak

Joseph Krystkowiak 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).

  • Transducer mandrel with attachment for holding fiber Bragg grating mounting collar
    Patent number: 7424186
    Abstract: A fiber optic acoustic transducer includes a mandrel having a first portion that preferably formed generally as a cylinder having a projection extending from one end. A grating collar also preferably formed in a generally cylindrical configuration. The grating collar has a passage extending therethrough so that it may mounted on the projection. An optical fiber has a sensor portion wound around the first portion of the mandrel and a second portion wound around the grating collar with a fiber Bragg grating being formed in the second portion of the optical fiber.
    Type: Grant
    Filed: July 27, 2006
    Date of Patent: September 9, 2008
    Assignee: Northrop Grumman Guidance and Electronics Company, Ltd.
    Inventors: Akbar Arab-Sadeghabadi, Joseph Krystkowiak, John Mansell, Sanan Shaibani
  • Optical sensor fiber with protective jacketing layers
    Patent number: 7327907
    Abstract: Optical fibers, especially those having a core layer, a cladding layer over the core layer, FBG's formed in the core layer, the cladding layer, or both, a buffer layer over the cladding layer, and an outer jacketing layer.
    Type: Grant
    Filed: October 14, 2004
    Date of Patent: February 5, 2008
    Assignee: Northrop Grumman Corporation
    Inventors: Sanan Shaibani, Joseph Krystkowiak, John Mansell, Akbar Arab-Sadenghabadi
  • Transducer mandrel with attachment for holding fiber bragg grating mounting collar
    Publication number: 20080025668
    Abstract: A fiber optic acoustic transducer includes a mandrel having a first portion that preferably formed generally as a cylinder having a projection extending from one end. A grating collar also preferably formed in a generally cylindrical configuration. The grating collar has a passage extending therethrough so that it may mounted on the projection. An optical fiber has a sensor portion wound around the first portion of the mandrel and a second portion wound around the grating collar with a fiber Bragg grating being formed in the second portion of the optical fiber.
    Type: Application
    Filed: July 27, 2006
    Publication date: January 31, 2008
    Inventors: Akbar Arab-Sadeghabadi, Joseph Krystkowiak, John Mansell, Sanan Shaibani
  • Compensating interferometer including delay lines with reduced noise
    Patent number: 7292754
    Abstract: Methods and apparatus for reducing noise in optical apparatus comprising a delay line by utilizing a plurality of wavelength specific delay lines to delay an input waveform such as a pulse rather than a single delay line. In a preferred embodiment an apparatus is configured to generate an optical waveform by distributing an input optical waveform among a plurality of environmentally isolated legs, wherein each leg contributes to the generated optical waveform by reflecting back at least a portion of light distributed to the leg, and the distribution among the plurality of legs is at least partially wavelength dependent.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: November 6, 2007
    Assignee: Northrop Grumman Corporation
    Inventors: Joseph Krystkowiak, Sanan Shaibani, Akbar Arab-Sadeghabadi, John Mansell
  • Compensating interferometer with Bragg reflectors
    Patent number: 7130506
    Abstract: Methods and apparatus for generating an optical waveform by distributing an input optical waveform among a plurality of environmentally isolated legs wherein each leg comprises a Bragg grating and contributes to the generated optical waveform by using the Bragg grating to reflect back at least a portion of light distributed to the leg.
    Type: Grant
    Filed: December 15, 2004
    Date of Patent: October 31, 2006
    Assignee: Northrop Grumman Corporation
    Inventors: Sanan Shaibani, Joseph Krystkowiak, John Mansell, Akbar Arab-Sadeghabadi
  • Compensating interferometer with Bragg reflectors
    Publication number: 20060127005
    Abstract: Methods and apparatus for generating an optical waveform by distributing an input optical waveform among a plurality of environmentally isolated legs wherein each leg comprises a Bragg grating and contributes to the generated optical waveform by using the Bragg grating to reflect back at least a portion of light distributed to the leg.
    Type: Application
    Filed: December 15, 2004
    Publication date: June 15, 2006
    Inventors: Sanan Shaibani, Joseph Krystkowiak, John Mansell, Akbar Arab-Sadeghabadi
  • Optical sensor fiber with protective jacketing layers
    Publication number: 20060083463
    Abstract: Optical fibers, especially those having a core layer, a cladding layer over the core layer, FBG's formed in the core layer, the cladding layer, or both, a buffer layer over the cladding layer, and an outer jacketing layer.
    Type: Application
    Filed: October 14, 2004
    Publication date: April 20, 2006
    Inventors: Sanan Shaibani, Joseph Krystkowiak, John Mansell, Akbar Arab-Sadenghabadi