Patents by Inventor Koen De Jongh

Koen De Jongh 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: 10382124
    Abstract: A method for selecting wide-band multimode optical fibers from a single wavelength, the method comprising the following steps of, for each multimode optical fiber obtaining a first DMD plot using a measurement of DMD carried out at a first single wavelength, obtaining from the first DMD plot, a first multimode fiber specification parameter; and for each fiber: obtaining from the first DMD plot, a curve representative of a radial offset delay, called ROD curve, as a function of the radial offset value; applying a linear fit on the ROD curve for at least two radial offset value ranges; obtaining from the linear fit and for each radial offset value range, an average radial offset delay slope, called ROD slope; selecting the multimode optical fibers meeting a first predetermined specification criterion for the first multimode fiber performance parameter, and for which the at least two computed ROD slopes meet a predetermined slope criterion.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: August 13, 2019
    Assignee: DRAKA COMTEQ B.V.
    Inventors: Denis Molin, Koen De Jongh, Marianne Bigot, Pierre Sillard
  • Patent number: 10337956
    Abstract: A method of qualifying an effective bandwidth of a multimode optical fiber at a first wavelength ?1, using DMD data of the fiber measured a second wavelength ?2. Data representative of a Radial Offset Delay, a Radial Offset Bandwidth and a Relative Radial Coupled Power of the fiber are derived from the DMD data at the second wavelength ?2. A transformation is performed on the ROD data and ROB data at the second wavelength ?2 to obtain corresponding ROD data and ROB data at the first wavelength ?1. An effective bandwidth of the fiber at the second wavelength ?2 is computed using the ROD data and the ROB data at the first wavelength ?1 and the {tilde over (P)}DMD data at the second wavelength ?2.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: July 2, 2019
    Assignee: DRAKA COMTEQ B.V.
    Inventors: Denis Molin, Koen De Jongh, Marianne Bigot, Pierre Sillard
  • Publication number: 20190011633
    Abstract: A method of qualifying an effective bandwidth of a multimode optical fiber at a first wavelength ?1, using DMD data of the fiber measured a second wavelength ?2. Data representative of a Radial Offset Delay, a Radial Offset Bandwidth and a Relative Radial Coupled Power of the fiber are derived from the DMD data at the second wavelength ?2. A transformation is performed on the ROD data and ROB data at the second wavelength ?2 to obtain corresponding ROD data and ROB data at the first wavelength ?1. An effective bandwidth of the fiber at the second wavelength ?2 is computed using the ROD data and the ROB data at the first wavelength ?1 and the {tilde over (P)}DMD data at the second wavelength ?2.
    Type: Application
    Filed: December 17, 2015
    Publication date: January 10, 2019
    Inventors: Denis Molin, Koen De Jongh, Marianne Bigot, Pierre Sillard
  • Publication number: 20180359025
    Abstract: A method for selecting wide-band multimode optical fibers from a single wavelength, the method comprising the following steps of, for each multimode optical fiber obtaining a first DMD plot using a measurement of DMD carried out at a first single wavelength, obtaining from the first DMD plot, a first multimode fiber specification parameter; and for each fiber: obtaining from the first DMD plot, a curve representative of a radial offset delay, called ROD curve, as a function of the radial offset value; applying a linear fit on the ROD curve for at least two radial offset value ranges; obtaining from the linear fit and for each radial offset value range, an average radial offset delay slope, called ROD slope; selecting the multimode optical fibers meeting a first predetermined specification criterion for the first multimode fiber performance parameter, and for which the at least two computed ROD slopes meet a predetermined slope criterion.
    Type: Application
    Filed: December 7, 2015
    Publication date: December 13, 2018
    Inventors: Denis Molin, Koen DE JONGH, Marianne BIGOT, Pierre SILLARD
  • Patent number: 8867880
    Abstract: A multimode optical fiber includes a central core having a radius (r1) and an alpha-index profile. The multimode optical fiber further includes a depressed trench, which surrounds the central core, that has a width (wt) and a refractive index difference (?nt) with an outer optical cladding. Typically, the central core's diameter is between about 47 and 53 microns, and the depressed trench's width (wt) is between 0.5 micron and 2 microns. The depressed trench's refractive index difference (?nt) with the outer optical cladding is typically between ?4×10?3 and ?1×10?3.
    Type: Grant
    Filed: June 4, 2010
    Date of Patent: October 21, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Denis Molin, Koen de Jongh, Pierre Sillard, Yves Lumineau
  • Patent number: 8724950
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Grant
    Filed: August 25, 2011
    Date of Patent: May 13, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh
  • Patent number: 8644664
    Abstract: The present invention embraces an optical fiber that includes a central core having an alpha refractive index profile with respect to an outer optical cladding. The optical fiber also includes an inner cladding and a buried trench. The central core includes a core matrix doped with at least fluorine and a dopant element that increases refractive index. The optical fiber typically has reduced bending losses and cladding effect as well as a high bandwidth at the wavelengths of 850 nanometers and 1300 nanometers for high-data-rate applications.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: February 4, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh, Frans Gooijer
  • Patent number: 8428410
    Abstract: The present invention embraces a multimode optical fiber that includes a central core having an alpha-index profile, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the central core's alpha-index profile has a minimum refractive index at the central core's radius that corresponds to a refractive index difference with respect to the outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth with a reduced cladding effect for high-data-rate applications.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: April 23, 2013
    Assignee: Draka Comteq B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh
  • Patent number: 8406593
    Abstract: The present invention embraces an optical fiber that includes a central core having an alpha-index profile with respect to an outer cladding. The optical fiber also includes an inner cladding, a depressed trench, and an outer cladding. Typically, the alpha-index profile of the central core is interrupted at a point having a positive refractive index difference with respect to the outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth with a reduced cladding effect for high-data-rate applications.
    Type: Grant
    Filed: December 3, 2010
    Date of Patent: March 26, 2013
    Assignee: Draka Comteq B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh
  • Patent number: 8391661
    Abstract: A multimode optical fiber includes a central core having a graded-index profile with a delta value of about 1.9 percent or greater. The graded-index core profile has at least two different alpha parameter values along the core radius, namely a first value in an inner zone of the central core and a second value in an outer zone of the central core. The second alpha parameter value is typically less than the first alpha parameter value. The graded-index core profile and its first derivative are typically substantially continuous over the width of the graded-index core.
    Type: Grant
    Filed: January 31, 2012
    Date of Patent: March 5, 2013
    Assignee: Draka Comteq, B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh
  • Publication number: 20120195561
    Abstract: A multimode optical fiber includes a central core having a graded-index profile with a delta value of about 1.9 percent or greater. The graded-index core profile has at least two different alpha parameter values along the core radius, namely a first value in an inner zone of the central core and a second value in an outer zone of the central core. The second alpha parameter value is typically less than the first alpha parameter value. The graded-index core profile and its first derivative are typically substantially continuous over the width of the graded-index core.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 2, 2012
    Applicant: Draka Comteq B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh
  • Publication number: 20120195549
    Abstract: The present invention embraces an optical fiber that includes a central core having an alpha refractive index profile with respect to an outer optical cladding. The optical fiber also includes an inner cladding and a buried trench. The central core includes a core matrix doped with at least fluorine and a dopant element that increases refractive index. The optical fiber typically has reduced bending losses and cladding effect as well as a high bandwidth at the wavelengths of 850 nanometers and 1300 nanometers for high-data-rate applications.
    Type: Application
    Filed: January 31, 2012
    Publication date: August 2, 2012
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh, Frans Gooijer
  • Publication number: 20110305423
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Application
    Filed: August 25, 2011
    Publication date: December 15, 2011
    Applicant: Draka Comteq B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh
  • Patent number: 8051683
    Abstract: The present invention relates to a method for manufacturing a preform for optical fibers via a vapor deposition process in which the position of the reversal point near the substrate tube's supply side shifts along the longitudinal axis of the substrate tube during at least part of the deposition process.
    Type: Grant
    Filed: April 25, 2008
    Date of Patent: November 8, 2011
    Assignee: Draka Comteq, B.V.
    Inventors: Rob Hubertus Matheus Deckers, Marco Korsten, Robert Martinus Marie Cremers, Koen de Jongh
  • Patent number: 8009950
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. The variation in concentration of each dopant and its derivative in relation to the fiber radius are continuous. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Grant
    Filed: April 22, 2010
    Date of Patent: August 30, 2011
    Assignee: Draka Comteq, B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh
  • Publication number: 20110135262
    Abstract: The present invention embraces an optical fiber that includes a central core having an alpha-index profile with respect to an outer cladding. The optical fiber also includes an inner cladding, a depressed trench, and an outer cladding. Typically, the alpha-index profile of the central core is interrupted at a point having a positive refractive index difference with respect to the outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth with a reduced cladding effect for high-data-rate applications.
    Type: Application
    Filed: December 3, 2010
    Publication date: June 9, 2011
    Applicant: DRAKA COMTEQ, B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh
  • Publication number: 20110135263
    Abstract: The present invention embraces a multimode optical fiber that includes a central core having an alpha-index profile, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the central core's alpha-index profile has a minimum refractive index at the central core's radius that corresponds to a refractive index difference with respect to the outer cladding. The optical fiber achieves reduced bending losses and a high bandwidth with a reduced cladding effect for high-data-rate applications.
    Type: Application
    Filed: December 3, 2010
    Publication date: June 9, 2011
    Applicant: DRAKA COMTEQ, B.V.
    Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh
  • Publication number: 20100310218
    Abstract: A multimode optical fiber includes a central core having a radius (r1) and an alpha-index profile. The multimode optical fiber further includes a depressed trench, which surrounds the central core, that has a width (wt) and a refractive index difference (?nt) with an outer optical cladding. Typically, the central core's diameter is between about 47 and 53 microns, and the depressed trench's width (wt) is between 0.5 micron and 2 microns. The depressed trench's refractive index difference (?nt) with the outer optical cladding is typically between ?4×10?3 and ?1×10?3.
    Type: Application
    Filed: June 4, 2010
    Publication date: December 9, 2010
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Denis Molin, Koen de Jongh, Pierre Sillard, Yves Lumineau
  • Publication number: 20100254653
    Abstract: A multimode optical fiber comprises a central core having an alpha profile, a depressed cladding having a portion in continuity with the alpha profile of the central core and a stepped portion, and an outer cladding. The alpha profile is obtained by co-doping at least two dopants. The variation in concentration of each dopant and its derivative in relation to the fiber radius are continuous. A multimode fiber for Ethernet optical system with an improved bandwidth is thus obtained.
    Type: Application
    Filed: April 22, 2010
    Publication date: October 7, 2010
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Denis Molin, Yves Lumineau, Pierre Sillard, Ralph Petrus Johannes Adrianus Van Lankveld, Koen de Jongh
  • Publication number: 20080271494
    Abstract: The present invention relates to a method for manufacturing a preform for optical fibers via a vapor deposition process in which the position of the reversal point near the substrate tube's supply side shifts along the longitudinal axis of the substrate tube during at least part of the deposition process.
    Type: Application
    Filed: April 25, 2008
    Publication date: November 6, 2008
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Rob Hubertus Matheus Deckers, Marco Korsten, Robert Martinus Marie Cremers, Koen de Jongh