Patents by Inventor Louis-Anne de Montmorillon

Louis-Anne de Montmorillon 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).

  • Publication number: 20190170934
    Abstract: The invention relates to an optical fiber 1 comprising a core 2 and a cladding 3 surrounding the core 2 and having an outer diameter of 125 ?m, the optical fiber 1 comprising a cured primary coating 4 directly surrounding the cladding 3 and a cured secondary coating 5 directly surrounding the cured primary coating 4, said cured primary coating 4 having a thickness t1 between 10 and 18 ?m and an in-situ tensile modulus Emod1 between 0.10 and 0.
    Type: Application
    Filed: July 29, 2016
    Publication date: June 6, 2019
    Inventors: Alain Pastouret, Pierre Sillard, Louis-Anne de Montmorillon
  • Patent number: 10295733
    Abstract: The invention concerns a single mode optical fiber having a core and a cladding, the core refractive index profile having a trapezoid-like shape. According to an aspect of the invention, the transition part of the trapezoid-like core refractive index profile is obtained by gradually changing a concentration of at least two dopants from a concentration in said center part of said core to a concentration in a cladding part adjacent to said core.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: May 21, 2019
    Assignee: Draka Comteq B.V.
    Inventors: Louis-Anne de Montmorillon, Pierre Sillard
  • Patent number: 9835502
    Abstract: Disclosed is a temperature and strain sensing optical fiber including a first doped radial zone (Z1) with an associated first Brillouin shift (BS1) caused by the doping of said zone (Z1) and a second doped radial zone (Z2) with associated second Brillouin shift (BS2) caused by the doping of said second zone (Z2). The concentration and/or composition of the doping materials in said first and second radial zones are chosen such that the first Brillouin Shift (BS1) is different from the second Brillouin Shift (BS2) for all variations of said Brillouin Shifts (BS1, BS2) caused by temperature and/or strain.
    Type: Grant
    Filed: January 19, 2012
    Date of Patent: December 5, 2017
    Assignee: Draka Comteq B.V.
    Inventors: Ekaterina Burov, Alain Pastouret, Louis-Anne De Montmorillon
  • Publication number: 20170031089
    Abstract: The invention concerns a single mode optical fibre having a core and a cladding, the core refractive index profile having a trapezoid-like shape. According to an aspect of the invention, the transition part of the trapezoid-like core refractive index profile is obtained by gradually changing a concentration of at least two dopants from a concentration in said centre part of said core to a concentration in a cladding part adjacent to said core.
    Type: Application
    Filed: December 20, 2013
    Publication date: February 2, 2017
    Applicant: Draka Comteq B.V.
    Inventors: Louis-Anne de Montmorillon, Pierre Sillard
  • Patent number: 9162917
    Abstract: An amplifying optical fiber includes an inner core, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the inner core includes a main matrix (e.g., silica-based) doped with at least one rare earth element. The depressed trench typically has a volume integral V13 of between about ?2200×10?3 ?m2 and ?1600×10?3 ?m2. Exemplary embodiments of the amplifying optical fiber are suitable for use in a compact configuration and high power applications.
    Type: Grant
    Filed: March 2, 2012
    Date of Patent: October 20, 2015
    Assignee: Draka Comteq, B.V.
    Inventors: Ekaterina Burov, Alain Pastouret, Louis-Anne de Montmorillon, Aurelien Bergonzo
  • Publication number: 20150003497
    Abstract: Disclosed is a temperature and strain sensing optical fiber including a first doped radial zone (Z1) with an associated first Brillouin shift (BS1) caused by the doping of said zone (Z1) and a second doped radial zone (Z2) with associated second Brillouin shift (BS2) caused by the doping of said second zone (Z2). The concentration and/or composition of the doping materials in said first and second radial zones are chosen such that the first Brillouin Shift (BS1) is different from the second Brillouin Shift (BS2) for all variations of said Brillouin Shifts (BS1, BS2) caused by temperature and/or strain.
    Type: Application
    Filed: January 19, 2012
    Publication date: January 1, 2015
    Inventors: Ekaterina Burov, Alain Pastouret, Louis-Anne De Montmorillon
  • Patent number: 8837889
    Abstract: An optical transmission fiber comprises a central core having an index difference ?n1 with an outer optical cladding; a first inner cladding having an index difference ?n2 with the outer cladding; and a second buried inner cladding having an index difference ?n3 with the outer cladding of less than ?3·10?3. The second buried inner cladding moreover contains Germanium in a weight concentration of between 0.5% and 7%. The fiber shows reduced bending and microbending losses while exhibiting the optical performances of a standard single-mode fiber (SSMF).
    Type: Grant
    Filed: August 3, 2011
    Date of Patent: September 16, 2014
    Assignee: Draka Comteq, B.V.
    Inventors: Louis-Anne de Montmorillon, Denis Molin, Pieter Matthijsse, Frans Gooijer, Ivo Flammer, Yves Lumineau, Marianne Bigot-Astruc, Pierre Sillard, Pascale Nouchi
  • Patent number: 8520995
    Abstract: An optical fiber includes a central core, which has a radius r1 and a refractive index n1, and a surrounding optical cladding, which has a refractive index n2 such that n2<n1 and 0.31%<((n1?n2)÷n2)<0.55%. The optical cladding has at least five holes. These holes, which are positioned between about 9 microns and 17 microns from the central core, have a radius rh such that 0.5r1?rh?r1.
    Type: Grant
    Filed: January 22, 2010
    Date of Patent: August 27, 2013
    Assignee: Draka Comteq, B.V.
    Inventors: Simon Richard, Louis-Anne de Montmorillon, Pierre Sillard, Marianne Bigot-Astruc, Denis Molin
  • Patent number: 8488931
    Abstract: An optical fiber having a core and an outer cladding, the core including from its center outward a central core having a radius and a refractive index difference with respect to the outer cladding, and a depressed inner cladding. The depressed inner cladding includes at least a first portion having a radius and a refractive index difference with respect to the outer cladding, the first portion preferably being adjacent to the central core, and a second portion adjacent to the first portion constituting a depressed trench having a radius, and a refractive index difference with respect to the outer cladding. The first portion of the inner cladding has a refractive index below the refractive index of the outer cladding, and the depressed trench has a refractive index that is lower than the refractive index of the first portion of the depressed inner cladding.
    Type: Grant
    Filed: October 12, 2010
    Date of Patent: July 16, 2013
    Assignee: Draka Comteq B.V.
    Inventors: Marianne Bigot-Astruc, Pierre Sillard, Louis-Anne De Montmorillon, Denis Molin, Simon Richard
  • Patent number: 8428411
    Abstract: The present invention embraces a single-mode optical fiber typically having reduced bending losses. The optical fiber includes a central core, an intermediate cladding, a buried trench, and an outer cladding. The optical fiber typically has (i), at a wavelength of 1310 nanometers, a mode field diameter with a nominal value of between about 8.6 microns and 9.5 microns (and a tolerance of ±0.4 micron), (ii) a cable cut-off wavelength of no more than 1260 nanometers, and (iii), for a bending radius of 15 millimeters at a wavelength of 1550 nanometers, bending losses of no more than 0.03 dB/turn.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: April 23, 2013
    Assignee: Draka Comteq, B.V.
    Inventors: Louis-Anne de Montmorillon, Simon Richard, Pierre Sillard
  • Patent number: 8428414
    Abstract: A single-mode optical fiber includes a central core, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius r1 and a positive refractive index difference ?n1 with the optical cladding. The intermediate cladding has a radius r2 and a refractive index difference ?n2 with the optical cladding, wherein ?n2 is less than ?n1. The depressed trench has a radius r3 and a negative index difference ?n3 with the optical cladding. At a wavelength of 1310 nanometers, the optical fiber has a mode field diameter (MFD) between 8.6 microns and 9.5 microns and, at a wavelength of 1550 nanometers, the optical fiber has bending losses less than about 0.25×10?3 dB/turn for a radius of curvature of 15 millimeters. At a wavelength of 1260 nanometers, attenuation of the LP11 mode to 19.3 dB is achieved over less than 90 meters of fiber.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: April 23, 2013
    Assignee: Draka Comteq, B.V.
    Inventors: Louis-Anne de Montmorillon, Simon Richard, Denis Molin, David Boivin, Marianne Bigot-Astruc, Pierre Sillard
  • Patent number: 8385705
    Abstract: Disclosed is an improved, single-mode optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations.
    Type: Grant
    Filed: March 26, 2012
    Date of Patent: February 26, 2013
    Assignee: Draka Comteq, B.V.
    Inventors: Bob J. Overton, Louis-Anne de Montmorillon, Simon Richard, Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, David Boivin
  • Patent number: 8301000
    Abstract: A single-mode optical fiber possesses, at a wavelength of 1550 nanometers, an effective area greater than about 90 pm2 without degradation of the optical fiber's other optical parameters. The single-mode optical fiber includes a central core, a first intermediate cladding, a second intermediate cladding, and an outer cladding. The optical fiber also has a cable cut-off wavelength of less than 1260 nanometers. Additionally, at a wavelength of 1310 nanometers, the optical fiber possesses a mode field diameter of between about 8.6 microns and 9.5 microns. Furthermore, the optical fiber possesses a zero chromatic dispersion wavelength of between about 1300 nanometers and 1324 nanometers and, at the zero chromatic dispersion wavelength, a dispersion slope of less than 0.092 ps/(nm2?km).
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: October 30, 2012
    Assignee: Draka Comteq, B.V.
    Inventors: Pierre Sillard, Denis Molin, Louis-Anne de Montmorillon, Marianne Bigot-Astruc, Simon Richard
  • Patent number: 8290324
    Abstract: A single-mode optical fiber includes a central core, a first inner cladding, a second inner cladding, and an outer cladding. The optical fiber, at a wavelength of 1550 nanometers, has an effective area greater than or equal to 100 ?m2. The optical fiber also has a cable cut-off wavelength less than 1260 nanometers. Additionally, the optical fiber possesses a zero chromatic dispersion wavelength of between about 1300 nanometers and 1324 nanometers and, at the zero chromatic dispersion wavelength, a dispersion slope of less than 0.092 ps/(nm2·km).
    Type: Grant
    Filed: January 27, 2010
    Date of Patent: October 16, 2012
    Assignee: Draka Comteq, B.V.
    Inventors: Pierre Sillard, Denis Molin, Louis-Anne de Montmorillon, Marianne Bigot-Astruc, Simon Richard
  • Publication number: 20120224254
    Abstract: An amplifying optical fiber includes an inner core, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the inner core includes a main matrix (e.g., silica-based) doped with at least one rare earth element. The depressed trench typically has a volume integral V13 of between about ?2200×10?3 ?m2 and ?1600×10?3 ?m2. Exemplary embodiments of the amplifying optical fiber are suitable for use in a compact configuration and high power applications.
    Type: Application
    Filed: March 2, 2012
    Publication date: September 6, 2012
    Applicant: DRAKA COMTEQ, B.V.
    Inventors: Ekaterina Burov, Alain Pastouret, Louis-Anne de Montmorillon, Aurelien Bergonzo
  • Publication number: 20120189258
    Abstract: Disclosed is an improved, single-mode optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations.
    Type: Application
    Filed: March 26, 2012
    Publication date: July 26, 2012
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Bob J. Overton, Louis-Anne de Montmorillon, Simon Richard, Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, David Boivin
  • Publication number: 20120183268
    Abstract: A single-mode optical fiber includes a central core, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius r1 and a positive refractive index difference ?n1 with the optical cladding. The intermediate cladding has a radius r2 and a refractive index difference ?n2 with the optical cladding, wherein ?n2 is less than ?n1. The depressed trench has a radius r3 and a negative index difference ?n3 with the optical cladding. At a wavelength of 1310 nanometers, the optical fiber has a mode field diameter (MFD) between 8.6 microns and 9.5 microns and, at a wavelength of 1550 nanometers, the optical fiber has bending losses less than about 0.25×10?3 dB/turn for a radius of curvature of 15 millimeters. At a wavelength of 1260 nanometers, attenuation of the LP11 mode to 19.3 dB is achieved over less than 90 meters of fiber.
    Type: Application
    Filed: March 26, 2012
    Publication date: July 19, 2012
    Applicant: DRAKA COMTEQ B.V.
    Inventors: Louis-Anne de Montmorillon, Simon Richard, Denis Molin, David Boivin, Marianne Bigot-Astruc, Pierre Sillard
  • Patent number: 8145025
    Abstract: A single-mode optical fiber includes a central core, an intermediate cladding, a depressed trench, and an external optical cladding. The central core has a radius r1 and a positive refractive index difference ?n1 with the optical cladding. The intermediate cladding has a radius r2 and a positive refractive index difference ?n2 with the optical cladding, wherein ?n2 is less than ?n1. The depressed trench has a radius r3 and a negative index difference ?n3 with the optical cladding. At a wavelength of 1310 nanometers, the optical fiber has a mode field diameter (MFD) between 8.6 microns and 9.5 microns and, at a wavelength of 1550 nanometers, the optical fiber has bending losses less than about 0.25×10?3 dB/turn for a radius of curvature of 15 millimeters. At a wavelength of 1260 nanometers, attenuation of the LP11 mode to 19.3 dB is achieved over less than 90 meters of fiber.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: March 27, 2012
    Assignee: Draka Comteq, B.V.
    Inventors: Louis-Anne de Montmorillon, Simon Richard, Denis Molin, David Boivin, Marianne Bigot-Astruc, Pierre Sillard
  • Patent number: 8145027
    Abstract: Disclosed is an improved, single-mode optical fiber possessing a novel coating system. When combined with a bend-insensitive glass fiber, the novel coating system according to the present invention yields an optical fiber having exceptionally low losses. The coating system features (i) a softer primary coating with excellent low-temperature characteristics to protect against microbending in any environment and in the toughest physical situations and, optionally, (ii) a colored secondary coating possessing enhanced color strength and vividness. The secondary coating provides improved ribbon characteristics for structures that are robust, yet easily entered (i.e., separated and stripped). The optional dual coating is specifically balanced for superior heat stripping in fiber ribbons, with virtually no residue left behind on the glass. This facilitates fast splicing and terminations.
    Type: Grant
    Filed: May 6, 2010
    Date of Patent: March 27, 2012
    Assignee: Draka Comteq, B.V.
    Inventors: Bob J. Overton, Louis-Anne de Montmorillon, Simon Richard, Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, David Boivin
  • Patent number: 8131125
    Abstract: The present invention embraces a single-mode optical fiber that, at a wavelength of 1550 nanometers, has bending losses of 0.15 dB/turn or less for a radius of curvature of 5 millimeters.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: March 6, 2012
    Assignee: Draka Comteq, B.V.
    Inventors: Louis-Anne de Montmorillon, Simon Richard, Denis Molin, David Boivin, Marianne Bigot-Astruc, Pierre Sillard