Patents by Inventor Gilles Melin
Gilles Melin 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).
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Patent number: 9405062Abstract: A multimode optical fiber includes a central core and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a depressed, 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. Exemplary optical-fiber embodiments may include an inner cladding having an outer radius r2 and a width w2. Exemplary optical-fiber embodiments may include a buried trench having a width w3 and an outer radius r3. Furthermore, exemplary optical-fiber embodiments may include an intermediate cladding having an outer radius r4 and a width w4.Type: GrantFiled: April 26, 2012Date of Patent: August 2, 2016Assignee: Draka Comteq B.V.Inventors: Gertjan Krabshuis, Adrian Amezcua-Correa, Frans Gooijer, Gilles Melin, Gerard Kuyt, Franciscus Johannes Achten, Stephanus Gerardus Fransiscus Geerings, Marianne Bigot-Astruc
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Patent number: 9322969Abstract: In harsh and hazardous environments, the presence of elevated levels of hydrogen gas is an indicator of chemical and/or radiological activity. The present hydrogen-sensing optical fiber provides rapid and reliable hydrogen detection and quantification, irrespective of temperature fluctuations. The hydrogen-sensing optical fiber does not exhibit significant irreversible hydrogen-induced attenuation losses after exposure to a hydrogen-rich atmosphere.Type: GrantFiled: October 22, 2012Date of Patent: April 26, 2016Assignee: Draka Comteq, B.V.Inventors: Ekaterina Burov, Alain Pastouret, Gilles Melin
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Patent number: 8699833Abstract: A microstructured optical fiber for generating broadband white light having a core doped with germanium and silica cladding surrounding the core, the cladding including a plurality of holes arranged in the form of a regular mesh, wherein the diameter F of a hole in the cladding, the pitch L between the respective centers of two neighboring holes in the cladding, and the refractive index difference Dn between the germanium-doped fiber core and the silica of the cladding are such that the fiber can generate white light on the fundamental mode over a wavelength band having a width of at least 1000 nm.Type: GrantFiled: August 12, 2010Date of Patent: April 15, 2014Assignee: Draka Comteq B.V.Inventors: Gilles Melin, Simon Lempereur, Anne Fleureau, Vincent Couderc, Philippe Laproux, Alexandre Kudlinski
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Publication number: 20120275751Abstract: A multimode optical fiber includes a central core and an outer cladding (e.g., an outer optical cladding). Typically, the optical fiber's central core is a depressed, 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. Exemplary optical-fiber embodiments may include an inner cladding having an outer radius r2 and a width w2. Exemplary optical-fiber embodiments may include a buried trench having a width w3 and an outer radius r3. Furthermore, exemplary optical-fiber embodiments may include an intermediate cladding having an outer radius r4 and a width w4.Type: ApplicationFiled: April 26, 2012Publication date: November 1, 2012Applicant: DRAKA COMTEQ B.V.Inventors: Gertjan Krabshuis, Adrian Amezcua-Correa, Frans Gooijer, Gilles Melin, Gerard Kuyt, Franciscus Johannes Achten, Stephanus Gerardus Fransiscus Geerings, Marianne Bigot-Astruc
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Publication number: 20120134376Abstract: An optical fiber includes a central core for transmitting and amplifying an optical signal, an optical cladding to confine the optical signal transmitted by the central core, and an outer cladding. The central core is formed of a core matrix and nanoparticles. The nanoparticles are formed of a nanoparticle matrix and rare earth dopants (i.e., a nanoparticle matrix surrounding the rare earth dopants). The optical cladding has a plurality of holes separated by a pitch and extending along the length of the optical fiber.Type: ApplicationFiled: November 23, 2011Publication date: May 31, 2012Applicant: DRAKA COMTEQ, B.V.Inventors: Ekaterina Burov, Gilles Melin, Alain Pastouret, David Boivin
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Publication number: 20110194812Abstract: A microstructured optical fiber for generating broadband white light having a core doped with germanium and silica cladding surrounding the core, the cladding including a plurality of holes arranged in the form of a regular mesh, wherein the diameter F of a hole in the cladding, the pitch L between the respective centers of two neighboring holes in the cladding, and the refractive index difference Dn between the germanium-doped fiber core and the silica of the cladding are such that the fiber can generate white light on the fundamental mode over a wavelength band having a width of at least 1000 nm.Type: ApplicationFiled: August 12, 2010Publication date: August 11, 2011Inventors: Gilles Melin, Simon Lempereur, Anne Fleureau, Vincent Couderc, Philippe Laproux, Alexandre Kudlinski
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Patent number: 7627220Abstract: The invention relates to optical fibers incorporating cavities in their structure.Type: GrantFiled: April 1, 2005Date of Patent: December 1, 2009Assignee: AlcatelInventors: Lionel Provost, Gilles Melin, Laurent Gasca
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Publication number: 20080159706Abstract: The invention relates to an optical fibre having a coating comprising at least two layers (4, 5). The first layer 91) comprises the reaction product of a first composition containing at least one polyether urethane (meth) acrylate oligomer, a first (meth)acrylate monomer and a second (meth) acrylate monomer. The second layer (2) comprises the reaction product of a second composition containing at lest one first polyether urethane (meth)acrylate oligomer, a second epoxy (meth) acrylate oligomer, a first (meth)acrylate monomer and a second (meth)acrylate monomer. The invention also relates to an optical fibre stripping method comprising a step (a) consisting in supplying the inventive optical fibre (1) and the stripping means, a step (b) consisting in bringing the optical fibre (1) and the stripping means into contact with each other, and a step (c) consisting in moving the fibre and the stripping means in relation to one another.Type: ApplicationFiled: February 28, 2005Publication date: July 3, 2008Inventors: Sebastien Andre, Xavier Andrieu, Gilles Melin
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Publication number: 20070201801Abstract: The invention relates to optical fibers incorporating cavities in their structure.Type: ApplicationFiled: April 1, 2005Publication date: August 30, 2007Inventors: Lionel Provost, Gilles Melin, Laurent Gasca
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Patent number: 7068909Abstract: An optical fiber includes a coating comprising a cross-linked network comprising the reaction product of monomers and oligomers and at least one polymer dispersed or interpenetrated in the cross-linked network. The oligomer and polymer components used are at least partially fluorinated. The fiber-coating composition of the invention presents a refractive index that is low while satisfying the conditions for industrial fiber-drawing.Type: GrantFiled: March 2, 2005Date of Patent: June 27, 2006Assignee: Draka Comteq B.V.Inventors: Sebastien Andre, Gilles Melin, Xavier Rejeaunier, Simon Lempereur, Samuel Merlet
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Patent number: 7006751Abstract: The invention relates to the field of amplifying or emitting optical fibers. It comprises an amplifying optical fiber doped with a rare earth comprising a plurality of successive segments (1, 2, 3, 4, 5), presenting a monomode core and a multimode core, presenting at the periphery of the multimode core a peripheral segment (4) of low index so as to increase the numerical aperture of the optical fiber, outer cladding (5) being situated at the periphery of the low index peripheral segment (4), the multimode core being at least in part above the outer cladding (5), the peripheral segment (2) presenting a decreasing gradient shape.Type: GrantFiled: May 26, 2004Date of Patent: February 28, 2006Assignee: Draka ComteoInventors: Lionel Provost, Gilles Melin, Andre Le Sauze, Anne Fleureau, Christian Simonneau, Xavier Rejeaunier
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Publication number: 20050265682Abstract: An optical fiber includes a coating comprising a cross-linked network comprising the reaction product of monomers and oligomers and at least one polymer dispersed or interpenetrated in the cross-linked network. The oligomer and polymer components used are at least partially fluorinated. The fiber-coating composition of the invention presents a refractive index that is low while satisfying the conditions for industrial fiber-drawing.Type: ApplicationFiled: March 2, 2005Publication date: December 1, 2005Inventors: Sebastien Andre, Gilles Melin, Xavier Rejeaunier, Simon Lempereur, Samuel Merlet
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Publication number: 20050163449Abstract: The invention relates to the field of amplifying or emitting optical fibers. It comprises an amplifying optical fiber doped with a rare earth comprising a plurality of successive segments (1, 2, 3, 4, 5), presenting a monomode core and a multimode core, presenting at the periphery of the multimode core a peripheral segment (4) of low index so as to increase the numerical aperture of the optical fiber, outer cladding (5) being situated at the periphery of the low index peripheral segment (4), the multimode core being at least in part above the outer cladding (5), the peripheral segment (2) presenting a decreasing gradient shape.Type: ApplicationFiled: May 26, 2004Publication date: July 28, 2005Inventors: Lionel Provost, Gilles Melin, Andre Le Sauze, Anne Fleureau, Christian Simonneau, Xavier Rejeaunier
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Patent number: 6895155Abstract: An optical fiber with microstructures comprises a plurality of capillary tubes disposed around a central rod and including a self-cleaning layer including molecules able to react with hydroxyl molecules to produce volatile gaseous substances.Type: GrantFiled: August 20, 2003Date of Patent: May 17, 2005Assignee: AlcatelInventors: Laurent Gasca, Gilles Melin, Xavier Rejeaunier, Simon Lempereur, Christine Moreau, Anne Fleureau
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Publication number: 20040096172Abstract: The object of the present invention is to design a photonic crystal fiber with high birefringence property such to preserve the polarization of optical signals transmitted through such fiber without implying to high manufacturing cost. For that a photonic crystal fiber is designed having at least the inner rows of the used longitudinal holes surrounding its guiding core following a parallelogram shape arrangement. This leads to a photonic crystal with an at most two fold rotational symmetry about a longitudinal symmetry. It is a particularly advantageous way to introduce a high birefringence which will guarantee to retain the polarisation of the transmitted optical signals.Type: ApplicationFiled: September 29, 2003Publication date: May 20, 2004Applicant: ALCATELInventors: Isabelle Bongrand, Laurent Gasca, Gilles Melin, Ambre Peyrilloux, Lionel Provost, Pierre Sansonetti
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Publication number: 20040062499Abstract: An optical fiber with microstructures comprises a plurality of capillary tubes disposed around a central rod and including a self-cleaning layer including molecules able to react with hydroxyl molecules to produce volatile gaseous substances.Type: ApplicationFiled: August 20, 2003Publication date: April 1, 2004Applicant: ALCATELInventors: Laurent Gasca, Gilles Melin, Xavier Rejeaunier, Simon Lempereur, Christine Moreau, Anne Fleureau