Patents by Inventor Kariofilis Konstadinidis

Kariofilis Konstadinidis 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: 11275206
    Abstract: An optical fiber comprising a core, a cladding disposed about the core, and a primary coating disposed about the cladding. The primary coating is cured during draw to at least eighty-five percent (85%) of the primary coating's fully cured primary-coating in situ modulus (P-ISM) value.
    Type: Grant
    Filed: July 15, 2020
    Date of Patent: March 15, 2022
    Assignee: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, Debra A Simoff
  • Publication number: 20220019017
    Abstract: An optical fiber comprising a core, a cladding disposed about the core, and a primary coating disposed about the cladding. The primary coating is cured during draw to at least eighty-five percent (85%) of the primary coating's fully cured primary-coating in situ modulus (P-ISM) value.
    Type: Application
    Filed: July 15, 2020
    Publication date: January 20, 2022
    Applicant: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, Debra A Simoff
  • Patent number: 10486194
    Abstract: Post-draw tower coating curing provides additional curing to an optical fiber coating after the fiber exits the bottom or output end of an optical fiber draw tower. A system may include a draw tower and a coating curing unit. The draw tower has at least one coating applicator. The coating curing unit may be located along a fiber path between the output end of the draw tower and a fiber takeup system.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: November 26, 2019
    Assignee: OFS FITEL, LLC
    Inventors: Harry D Garner, Douglas Edward Horgen, Kariofilis Konstadinidis
  • Patent number: 10451795
    Abstract: A optical fiber having core and cladding regions, a primary coating, and a secondary coating may be defined in part by a curve relating the microbend sensitivity to a ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating (as plotted on respective y and x axes). The curve has a substantially peaked shape defined by a positive-slope region and a negative-slope region. The ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating is within the positive-slope region.
    Type: Grant
    Filed: November 7, 2018
    Date of Patent: October 22, 2019
    Assignee: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, David W Peckham, Debra A Simoff
  • Publication number: 20190176189
    Abstract: Post-draw tower coating curing provides additional curing to an optical fiber coating after the fiber exits the bottom or output end of an optical fiber draw tower. A system may include a draw tower and a coating curing unit. The draw tower has at least one coating applicator. The coating curing unit may be located along a fiber path between the output end of the draw tower and a fiber takeup system.
    Type: Application
    Filed: December 11, 2017
    Publication date: June 13, 2019
    Applicant: OFS Fitel, LLC
    Inventors: Harry D Garner, Douglas Edward Horgen, Kariofilis Konstadinidis
  • Publication number: 20190146150
    Abstract: A optical fiber having core and cladding regions, a primary coating, and a secondary coating may be defined in part by a curve relating the microbend sensitivity to a ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating (as plotted on respective y and x axes). The curve has a substantially peaked shape defined by a positive-slope region and a negative-slope region. The ratio of the elastic modulus of the secondary coating to the elastic modulus of the primary coating is within the positive-slope region.
    Type: Application
    Filed: November 7, 2018
    Publication date: May 16, 2019
    Applicant: OFS Fitel, LLC
    Inventors: Kariofilis Konstadinidis, David W Peckham, Debra A Simoff
  • Publication number: 20140205251
    Abstract: The specification describes an optical fiber color coding scheme that uses two colors, where each of the two colors constitutes one half of the surface of the optical fiber coating. If a longitudinal portion of the coating is considered a hollow cylinder, then each of the two colors is a hollow hemi-cylinder. To ensure that each of the two colors is always plainly visible to an installer, the two colors are formed with a twist. Using two colors for coding substantially increases the number of available unique color codes. Coloring the entire coating reduces the chances of error in identifying the optical fibers.
    Type: Application
    Filed: January 22, 2013
    Publication date: July 24, 2014
    Applicant: OFS FITEL, LLC
    Inventors: Harry D. Garner, Jonathan M. Jobe, Kariofilis Konstadinidis
  • Patent number: 8768128
    Abstract: The specification describes an optical fiber color coding scheme that uses two colors, where each of the two colors constitutes one half of the surface of the optical fiber coating. If a longitudinal portion of the coating is considered a hollow cylinder, then each of the two colors is a hollow hemi-cylinder. To ensure that each of the two colors is always plainly visible to an installer, the two colors are formed with a twist. Using two colors for coding substantially increases the number of available unique color codes. Coloring the entire coating reduces the chances of error in identifying the optical fibers.
    Type: Grant
    Filed: January 22, 2013
    Date of Patent: July 1, 2014
    Assignee: OFS Fitel, LLC
    Inventors: Harry D Garner, Jonathan M Jobe, Kariofilis Konstadinidis
  • Patent number: 8637115
    Abstract: Certain embodiments of the invention may include systems and methods curing a coated optical fiber. The method includes drawing the coated optical fiber through a gas chamber filled with a predetermined gas, drawing the fiber through a cure tube coupled to the gas chamber, and purging at least a portion of an inner surface of the cure tube with a purge gas as the coated optical fiber is drawn through the cure tube.
    Type: Grant
    Filed: December 24, 2009
    Date of Patent: January 28, 2014
    Assignee: OFS Fitel, LLC
    Inventors: Peter Haslov, Kariofilis Konstadinidis, Harry Garner
  • Patent number: 8351749
    Abstract: Certain embodiments of the invention may include systems and methods for coating an optical fiber. The method includes coating an optical fiber with a primary coating, preparing a secondary coating by selectively mixing a concentrate with an ultraviolet (UV) curable diluent coating, wherein the concentrate comprises predetermined amounts of a color agent and a release agent, and applying the secondary coating to the optical fiber and primary coating.
    Type: Grant
    Filed: December 17, 2009
    Date of Patent: January 8, 2013
    Assignee: OFS Fitel, LLC
    Inventors: Kariofilis Konstadinidis, Harry Garner
  • Publication number: 20110188822
    Abstract: Certain embodiments of the invention may include systems and methods for providing optical fiber coatings to reduce microbend losses. According to an example embodiment of the invention, a method is provided for coating an optical fiber to reduce microbend losses and polarization mode dispersion (PMD). The method includes applying a primary layer to the optical fiber, wherein the optical fiber comprises a core region surrounded by a cladding region. The method includes applying a secondary layer to the primary layer, and curing the primary and secondary layers, wherein the cured primary layer adheres to the cladding region with a minimum pullout adhesion of 6 N/cm, and the cured secondary layer has an in situ modulus of about 700 MPa to about 1200 MPa at room temperature.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 4, 2011
    Applicant: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, Harry Garner, Peter Haslov, Jinkee Kim, Debra Simoff, Durgesh Vaidya, Yoshihiro Arashitani
  • Publication number: 20110159178
    Abstract: Certain embodiments of the invention may include systems and methods curing a coated optical fiber. The method includes drawing the coated optical fiber through a gas chamber filled with a predetermined gas, drawing the fiber through a cure tube coupled to the gas chamber, and purging at least a portion of an inner surface of the cure tube with a purge gas as the coated optical fiber is drawn through the cure tube.
    Type: Application
    Filed: December 24, 2009
    Publication date: June 30, 2011
    Applicant: OFS FITEL, LLC
    Inventors: Peter Haslov, Kariofilis Konstadinidis, Harry Garner
  • Publication number: 20110150404
    Abstract: Certain embodiments of the invention may include systems and methods for coating an optical fiber. The method includes coating an optical fiber with a primary coating, preparing a secondary coating by selectively mixing a concentrate with an ultraviolet (UV) curable diluent coating, wherein the concentrate comprises predetermined amounts of a color agent and a release agent, and applying the secondary coating to the optical fiber and primary coating.
    Type: Application
    Filed: December 17, 2009
    Publication date: June 23, 2011
    Applicant: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, Harry Garner
  • Patent number: 7817892
    Abstract: A bend insensitive fiber optic cable includes a singlemode fiber, a buffer layer surrounding the fiber wherein a thickest component of the buffer layer has an elastic modulus greater than 515 MPa (75,000 psi), and a jacket surrounding the buffer layer, wherein the jacket has a thickness of at least 1.2 mm. In one preferred embodiment, the buffer layer includes a nylon 12 resin with a nominal elastic modulus of approximately 218,000 psi. In this embodiment, an inner thin component of the buffer layer is made of an ethylene/ethyl acrylate resin so as to facilitate stripping of the buffer layer away from the fiber.
    Type: Grant
    Filed: September 9, 2008
    Date of Patent: October 19, 2010
    Assignee: OFS Fitel, LLC
    Inventors: Kariofilis Konstadinidis, David J. Mazzarese, Richard Norris, Peter A. Weimann
  • Publication number: 20090297105
    Abstract: A bend insensitive fiber optic cable includes a singlemode fiber, a buffer layer surrounding the fiber wherein a thickest component of the buffer layer has an elastic modulus greater than 515 MPa (75,000 psi), and a jacket surrounding the buffer layer, wherein the jacket has a thickness of at least 1.2 mm. In one preferred embodiment, the buffer layer includes a nylon 12 resin with a nominal elastic modulus of approximately 218,000 psi. In this embodiment, an inner thin component of the buffer layer is made of an ethylene/ethyl acrylate resin so as to facilitate stripping of the buffer layer away from the fiber.
    Type: Application
    Filed: September 9, 2008
    Publication date: December 3, 2009
    Inventors: Kariofilis Konstadinidis, David J. Mazzarese, Richard Norris, Peter A. Weimann
  • Patent number: 7431963
    Abstract: The specification describes optical fiber cables designed for microduct installations. The microduct cables are coated with a sheath having particulates added to modify the drag of the outer surface of the cable to air, and thereby facilitate air blown installation. The particulates are nanoclay, silica, alumina, or other suitable solid particles of less than 5 microns. The coating comprises a prepolymer containing the filler, and is UV cured.
    Type: Grant
    Filed: March 8, 2005
    Date of Patent: October 7, 2008
    Assignee: Furukawa Electric North America, Inc.
    Inventors: Kariofilis Konstadinidis, John M. Turnipseed, Peter A. Weimann
  • Publication number: 20050207716
    Abstract: Dual coated optical fiber cables are optimized for air blown installation. The elastic properties of both coatings are controlled within a desired range over the full range of potential installation temperatures, e.g. 0-45° C. The material of the inner coating has a Tg below ?15° C., and preferably below ?25° C., and the material of the outer coating has a Tg above 60° C., and preferably above 75° C.
    Type: Application
    Filed: March 17, 2004
    Publication date: September 22, 2005
    Inventors: Kariofilis Konstadinidis, Heng Ly, Jorg Sizemore, Kenneth Taylor
  • Publication number: 20050184411
    Abstract: The specification describes optical fiber cables designed for microduct installations. The microduct cables are coated with a sheath having particulates added to modify the drag of the outer surface of the cable to air, and thereby facilitate air blown installation. The particulates are nanoclay, silica, alumina, or other suitable solid particles of less than 5 microns. The coating comprises a prepolymer containing the filler, and is UV cured.
    Type: Application
    Filed: March 8, 2005
    Publication date: August 25, 2005
    Inventors: Kariofilis Konstadinidis, John Turnipseed, Peter Weimann
  • Publication number: 20040179799
    Abstract: An improved optical fiber cable is fabricated from a core surrounded by a protective sheath having a radially-varying elastic modulus. The core comprises one or more longitudinally extending optical fibers. The protective sheath comprises least a first coating layer portion and a second coating layer portion. The first and second coating layer portions are comprised of a common coating material. A modifier is added to the coating material comprising the first coating layer portion. Likewise, a modifier is added to the coating material comprising the second coating layer portion. The addition of a modifier to the first coating layer portion and the addition of a modifier to the second coating layer portion cause the coating to have an elastic modulus that varies in a radial direction along radii extending outwardly from a center of the core of the cable. The core may be, for example, a single optical fiber, a bundle of optical fibers, an optical fiber ribbon, a stack of optical fiber ribbons, etc.
    Type: Application
    Filed: March 10, 2003
    Publication date: September 16, 2004
    Inventors: Kariofilis Konstadinidis, Kyoyul Oh, Mahmood Tabaddor, John M. Turnipseed
  • Publication number: 20040042743
    Abstract: The specification describes optical fiber cables designed for microduct installations. The microduct cables are coated with a sheath having particulates added to modify the drag of the outer surface of the cable to air, and thereby facilitate air blown installation. The particulates are nanoclay, silica, alumina, or other suitable solid particles of less than 5 microns. The coating comprises a prepolymer containing the filler, and is UV cured.
    Type: Application
    Filed: September 3, 2002
    Publication date: March 4, 2004
    Inventors: Kariofilis Konstadinidis, John M. Turnipseed, Peter A. Weimann