Patents by Inventor Marianne Bigot-Astruc
Marianne Bigot-Astruc 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: 8290324Abstract: 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: GrantFiled: January 27, 2010Date of Patent: October 16, 2012Assignee: Draka Comteq, B.V.Inventors: Pierre Sillard, Denis Molin, Louis-Anne de Montmorillon, Marianne Bigot-Astruc, Simon Richard
-
Publication number: 20120251062Abstract: A multimode optical fiber includes a central core surrounded by an outer cladding. The central core has a graded-index profile with respect to the outer cladding and an outer radius r1 of between about 22 microns and 28 microns. The optical fiber also includes an inner cladding positioned between the central core and the outer cladding, and a depressed trench positioned between the inner cladding and the outer cladding. The multimode optical fiber exhibits reduced bending losses.Type: ApplicationFiled: March 29, 2012Publication date: October 4, 2012Applicant: DRAKA COMTEQ, B.V.Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Franciscus Johannes Achten
-
Publication number: 20120243843Abstract: A multimode optical fiber includes a central core surrounded by an outer cladding. The central core has a graded-index profile with respect to the outer cladding and an outer radius r1 of between about 30 microns and 50 microns (e.g., between about 35 microns and 45 microns). The optical fiber also includes an inner cladding positioned between the central core and the outer cladding, and a depressed trench positioned between the inner cladding and the outer cladding. The multimode optical fiber exhibits reduced bending losses.Type: ApplicationFiled: March 23, 2012Publication date: September 27, 2012Applicant: DRAKA COMTEQ B.V.Inventors: Denis Molin, Pierre Sillard, Marianne Bigot-Astruc, Frans Gooijer, Franciscus Johannes Achten
-
Publication number: 20120195549Abstract: 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: ApplicationFiled: January 31, 2012Publication date: August 2, 2012Applicant: DRAKA COMTEQ B.V.Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh, Frans Gooijer
-
Publication number: 20120195561Abstract: 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: ApplicationFiled: January 31, 2012Publication date: August 2, 2012Applicant: Draka Comteq B.V.Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh
-
Publication number: 20120189258Abstract: 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: ApplicationFiled: March 26, 2012Publication date: July 26, 2012Applicant: 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: 20120183268Abstract: 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: ApplicationFiled: March 26, 2012Publication date: July 19, 2012Applicant: DRAKA COMTEQ B.V.Inventors: Louis-Anne de Montmorillon, Simon Richard, Denis Molin, David Boivin, Marianne Bigot-Astruc, Pierre Sillard
-
Patent number: 8145025Abstract: 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: GrantFiled: May 6, 2009Date of Patent: March 27, 2012Assignee: Draka Comteq, B.V.Inventors: Louis-Anne de Montmorillon, Simon Richard, Denis Molin, David Boivin, Marianne Bigot-Astruc, Pierre Sillard
-
Patent number: 8145027Abstract: 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: GrantFiled: May 6, 2010Date of Patent: March 27, 2012Assignee: 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: 8131125Abstract: 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: GrantFiled: February 11, 2011Date of Patent: March 6, 2012Assignee: Draka Comteq, B.V.Inventors: Louis-Anne de Montmorillon, Simon Richard, Denis Molin, David Boivin, Marianne Bigot-Astruc, Pierre Sillard
-
Publication number: 20120051703Abstract: A single-mode optical fiber includes a central core, an intermediate cladding, a buried trench, and optical cladding. The central core has an outer radius r1 and a refractive index difference ?n1 relative to the optical cladding. The intermediate cladding has an outer radius r2 and a refractive index difference ?n2 relative to the optical cladding. The buried trench has an outer radius r3 and a refractive index difference ?n3 relative to the optical cladding. The optical fiber typically has an effective area of about 150 ?m2 or greater at a wavelength of 1550 nanometers and exhibits low bending losses.Type: ApplicationFiled: July 1, 2011Publication date: March 1, 2012Applicant: DRAKA COMTEQ B.V.Inventors: Marianne Bigot-Astruc, Pierre Sillard, Simon Richard
-
Patent number: 8103143Abstract: Disclosed is an optical transmission fiber having reduced bending and microbending losses that is commercially usable in FTTH or FTTC transmission systems.Type: GrantFiled: February 28, 2011Date of Patent: January 24, 2012Assignee: Draka Comteq, B.V.Inventors: Louis-Anne de Montmorillon, Denis Molin, Pieter Matthijsse, Frans Gooijer, Emmanuel Petitfrere, Yves Lumineau, Franciscus Johannes Achten, Marianne Bigot-Astruc, Pierre Sillard, Pascale Nouchi
-
Publication number: 20110286710Abstract: 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 whilst exhibiting the optical performances of a standard single-mode fiber (SSMF).Type: ApplicationFiled: August 3, 2011Publication date: November 24, 2011Applicant: DRAKA COMTEQ B.V.Inventors: Louis-Anne de Montmorillon, Pieter Matthijsse, Pascale Nouchi, Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Frans Gooijer, Ivo Flammer, Yves Lumineau
-
Patent number: 8055111Abstract: A dispersion-shifted optical fiber (NZDSF) includes a central core (r1, Dn1), an inner cladding having at least three zones with a first intermediate cladding zone (r2, Dn2), a second ring zone (r3, Dn3) and a third buried trench zone (Wtr, Dnt). The buried trench zone has an index difference (Dnt) with the optical cladding between ?5·10?3 and ?15·10?3 and has a width (Wtr) between 2.5 ?m and 5.5 ?m. The present optical fiber, at a wavelength of 1550 nm, has reduced Rayleigh scattering losses of less than 0.164 dB/km, with limited bending losses.Type: GrantFiled: April 3, 2009Date of Patent: November 8, 2011Assignee: Draka Comteq, B.V.Inventors: Pierre Sillard, Elise Regnier, Marianne Bigot-Astruc, Denis Molin, Louis-Anne de Montmorillon, Simon Richard
-
Patent number: 8041172Abstract: The present invention relates to a transmission optical fiber. The optical fiber includes, from its center to its periphery a central core, an intermediate cladding, and a depressed cladding. The optical fiber has an effective area (Seff) of at least about 120 ?m2 at a wavelength of 1550 nm and an effective cutoff wavelength (?Ceff) of less than 1600 nm. The optical fiber has an effective area of more than 120 ?m2 with a cutoff wavelength limited to less than about 1600 nm without degradation of other optical parameters (e.g., attenuation losses and dispersion).Type: GrantFiled: April 7, 2008Date of Patent: October 18, 2011Assignee: Draka Comteq, B.V.Inventors: Pierre Sillard, Denis Molin, Louis-Anne De Montmorillon, Marianne Bigot-Astruc, Simon Richard
-
Publication number: 20110217012Abstract: A multimode optical fiber includes a central core, an inner cladding, a buried trench, and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a glass-based central core having an alpha-index profile (i.e., a graded-index profile), an outer radius r1, and a maximum refractive index difference ?n1 with respect to the outer cladding. The central core's alpha-index profile has a minimum refractive index at the central core's outer radius r1 that corresponds to a refractive index difference ?nend with respect to the outer cladding. The inner cladding has an outer radius r2, a width w2, and a refractive index difference ?n2 with respect to the outer cladding. The buried trench has an outer radius rext, a width w3, and a refractive index difference ?n3 with respect to the outer cladding. The multimode optical fiber typically has reduced bending losses, a high bandwidth at wavelengths of both 850 nanometers and 1300 nanometers, and a reduced cladding effect.Type: ApplicationFiled: March 1, 2011Publication date: September 8, 2011Applicant: DRAKA COMTEQ B.V.Inventors: Marianne Bigot-Astruc, Denis Molin, Pierre Sillard
-
Patent number: 7995889Abstract: 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 whilst exhibiting the optical performances of a standard single-mode fiber (SSMF).Type: GrantFiled: November 19, 2009Date of Patent: August 9, 2011Assignee: 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
-
Publication number: 20110188823Abstract: A non-zero dispersion shifted optical fiber (NZDSF) includes a central core, an inner cladding, and an outer cladding. The central core has an outer radius r1 and a maximum refractive index difference Dn1 with respect to the outer cladding. The inner cladding includes a first intermediate cladding and a buried trench. The first intermediate cladding has an outer radius r2 and a refractive index difference Dn2 with respect to the outer cladding. The buried trench has an outer radius r3, a width w3, and a negative refractive index difference Dn3 with respect to the outer cladding. In some embodiments, the inner cladding includes a second intermediate cladding having an outer radius r4 and a refractive index difference Dn4 with respect to the outer cladding. For a radius of curvature of 30 millimeters at a wavelength of 1625 nanometers, the optical fiber typically exhibits bending losses of about 0.5 dB/100 turns or less.Type: ApplicationFiled: January 31, 2011Publication date: August 4, 2011Applicant: DRAKA COMTEQ B.V.Inventors: Pierre Sillard, Marianne Bigot-Astruc
-
Publication number: 20110164852Abstract: Disclosed is an optical transmission fiber having reduced bending and microbending losses that is commercially usable in FTTH or FTTC transmission systems.Type: ApplicationFiled: February 28, 2011Publication date: July 7, 2011Applicant: DRAKA COMTEQ B.V.Inventors: Louis-Anne de Montmorillon, Denis Molin, Pieter Matthijsse, Frans Gooijer, Emmanuel Petitfrere, Yves Lumineau, Franciscus Johannes Achten, Marianne Bigot-Astruc, Pierre Sillard, Pascale Nouchi
-
Publication number: 20110135262Abstract: 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: ApplicationFiled: December 3, 2010Publication date: June 9, 2011Applicant: DRAKA COMTEQ, B.V.Inventors: Denis Molin, Marianne Bigot-Astruc, Pierre Sillard, Koen de Jongh