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| Number | Title | Issue Date |
| 7466888 | Filler ribbons for ribbon stack A buffer tube having therein a ribbon stack formed of optical fiber ribbons, and at least one filler ribbon provided on at least a top or bottom surface of the ribbon stack. The filler ribbon is provided to increase coupling between the ribbon stack and the buffer t... | 12/16/2008 |
| 7440662 | Compensating fiber for cumulated chromatic dispersion and chromatic dispersion slope A multimode fiber having an index profile such that, for a propagation mode other than the fundamental mode and at a wavelength of 1550 nm, the fiber presents a positive chromatic dispersion greater than or equal to 50 ps/run/km, a positive chromatic dispersion slop... | 10/21/2008 |
| 7437040 | Optical fiber with reduced stimulation Brillouin scattering An optical fiber having a given refractive index profile comprises a core region and a cladding region. The core region includes at least two co-dopants and the concentration of at least one of said core dopant varies continuously over the entire core region. The op... | 10/14/2008 |
| 7428361 | Chromatic dispersion compensating and chromatic dispersion slope compensating fiber A chromatic dispersion compensating and dispersion slope compensating optical fiber comprises a central core having an index difference Δn1 with an outer optical cladding, a first buried inner cladding having an index difference Δn2 with the ... | 09/23/2008 |
| 7421172 | Multimode optical fibre having a refractive index profile, optical communication system using same and method for manufacturing such a fibre The invention relates to a multimode optical fibre having a refractive index profile, comprising a light-guiding core surrounded by one or more cladding layers. The present invention furthermore relates to an optical communication system comprising a transmitter, a ... | 09/02/2008 |
| 7414081 | Colored, radiation-curable composition Radiation-curable compositions, and methods of making the same, for providing a wide variety of substrates with a durable, colored coating or colorant are disclosed. The color is at least in part provided by chromophore molecules that are covalently bonded to other ... | 08/19/2008 |
| 7394959 | Method of manufacturing an optical fibre having variations in the refractive index An optical fibre for propagating a signal in different modes, including a longitudinal length “a” of a change in the tension buildup in the optical fibre and a longitudinal distance “L” between two such changes are in accordance with the equation, a | 07/01/2008 |
| 7391944 | Fiber optic cable with a concave surface A drop cable includes a jacket having first and second opposing sides. The first side has a concave surface. At least one strength member is disposed in the jacket. An optical transmission component is disposed within the jacket and proximate the concave surface. Th... | 06/24/2008 |
| 7383703 | Anti-PMD system for optical fibers An anti-PMD system comprises a pulley which oscillates in rotation and applies a torsion torque alternately in the clockwise direction and in the counterclockwise direction to an optical fiber during drawing of the optical fiber to reduce its PMD. A portion of a per... | 06/10/2008 |
| 7373055 | System and method for providing a buffer tube including a jet A system and method for providing a buffer tube. The system includes a crosshead that coats at least one optical fiber with a buffer tube coating; a vat that includes a fluid, the fluid within the vat cooling the buffer tube coating to form a buffer tube, and the va... | 05/13/2008 |
| 7369732 | Chromatic dispersion-compensating optical fibre in the S-band using a higher order mode The invention relates to an chromatic dispersion-compensating optical fibre in the S-band, for use in compensating for the chromatic dispersion of either a standard SMF optical fibre or of an NZ-DSF optical fibre, carrying an optical signal in the spectral band in u... | 05/06/2008 |
| 7362427 | Polarized lightwave reflectometry method (POTDR) A polarized lightwave reflectometry method including the steps of sending at least two polarized light signals into the optical fiber to be tested, the signals presenting a determined angular offset relative to each other so that the polarization mode dispersion coe... | 04/22/2008 |
| 7356234 | Chromatic dispersion compensating fiber Disclosed is a chromatic dispersion compensating optical fiber comprising a central core, an intermediate cladding having a width (r2−r1) of 2.0 microns or greater, and a depressed inner cladding having a refractive index difference Dn3 ... | 04/08/2008 |
| 7346244 | Coated central strength member for fiber optic cables with reduced shrinkage A foam polymer jacketed rigid strength member for a fiber optic cable is disclosed, as is the method for its production. The foam jacket is made by feeding into an extruder a base polymer material, preferably a resin, such as polypropyene. The base material is melte... | 03/18/2008 |
| 7336876 | Chromatic dispersion-compensating optical fibre in the S-band using a higher order mode The invention relates to an chromatic dispersion-compensating optical fibre in the S-band, for use in compensating for the chromatic dispersion of either a standard SMF optical fiber or of an NZ-DSF optical fiber, carrying an optical signal in the spectral band in u... | 02/26/2008 |
| 7327921 | Chromatic dispersion compensating optical fibre The invention relates to the field of chromatic dispersion compensating optical fibers for a wavelength multiplexing transmission network. A chromatic dispersion compensating optical fiber is provided having at least six core slices (1 to 6) and having... | 02/05/2008 |
| 7323057 | Cable powder applicator The invention relates to the field of applicators for applying moisture-absorbent powder on cable elements. This is an applicator for applying moisture-absorbent powder on cable elements which comprises a hopper intended to contain the powder, a mesh closing the sma... | 01/29/2008 |
| 7322122 | Method and apparatus for curing a fiber having at least two fiber coating curing stages The present invention provides a method and apparatus for curing a coated fiber, comprising either two fiber coating curing stages separated by a cooling stage, or two fiber coating curing stages separated by a distinct time interval, or both. One of the two fiber c... | 01/29/2008 |
| 7308179 | Component with optical fiber and associated optical fiber The invention relates to the field of components with optical fibers and of associated optical fibers. The invention relates, on the one hand, to a component with optical fiber including an at least partly bent optical fiber (2) which successively comprises, ... | 12/11/2007 |
| 7290408 | Apparatus for supporting a preform having a supporting core The invention relates to apparatus for supporting a preform manufactured in an installation for manufacturing or building up preforms having supporting cores, said installation including at least rotation means having a horizontal axis of rotation and two mounting p... | 11/06/2007 |
| 7292757 | Apparatus and method for on-line binder laylength measurement and adjustment A method and apparatus for determining and adjusting binder laylength during the process of manufacturing a selected fiber optic cable design. Specifically, a binder, having a distinguishing and physically detectable feature, is wrapped around fiber optic bundles or... | 11/06/2007 |
| 7284397 | Method of controlling the polarization mode dispersion of an optical fiber during fiber drawing An optical fiber drawing installation is equipped with an oscillating pulley that applies torsion to the fiber alternately in one rotation direction and then in the opposite direction. To control the torsion applied to the fiber, images are formed of the fiber and t... | 10/23/2007 |
| 7272286 | Dispersion managed HOM multimode optical fibre The invention relates to the field of dispersion managed optical fibres for use in wavelength division multiplex transmission networks. A multimode optical fibre in which at least one higher-order mode can be propagated, is constituted radially by a single central c... | 09/18/2007 |
| 7266273 | Method for making an optical cable and related machine The invention relates to the field of processes for the production of an optical transmission cable as well as to the apparatus for carrying out such a process. The method is a process for producing an optical transmission cable from at least one tube (1) ins... | 09/04/2007 |
| 7247347 | Method of coating an optical fiber A method of coating an optical fiber includes a step of coating the fiber with a curable coating composition and a step of curing the composition, which contains an unsaturated compound having a double bond and an oxidation catalyst. The curing step includes an in-l... | 07/24/2007 |
| 7228245 | Method for determining the fundamental oscillation frequency in an optical fiber and an application of a tensile force thus measured A method for determining the fundamental oscillation frequency in an optical fiber during the drawing thereof from an optical preform, the oscillation of the optical fiber being measured perpendicular to the longitudinal axis thereof for the formation of a frequency... | 06/05/2007 |
| 7212715 | Cable element having repositionable pressure sensitive adhesive to couple buffer tubes to a central strength member A cable element and a method of making the same, in which the cable element has a central strength member, a plurality of buffer tubes are disposed on the central strength member, each of the plurality of buffer tubes encloses at least one signal transmission elemen... | 05/01/2007 |
| 7203405 | Optical fiber cable with strategically placed filler rods An optical fiber cable including a central strength member extending longitudinally; a plurality of buffer tubes housing optical fibers and stranded around the strength member; a pair of filler elements stranded around the strength member along with the buffer tubes... | 04/10/2007 |
| 7197216 | Groove cable having a predetermined longitudinal thermal expansion force A cable system and method including a cable or a microduct provided within the groove extending vertically into, but not through, a pavement. The cable has a central strength member, at least one buffer tube stranded around the central strength member, an outer jack... | 03/27/2007 |
| 7192541 | Method and apparatus for solid-stranding a flextube unit A solid-stranding method and apparatus for forming optical cables. Solid-stranding combines buffering and stranding operations, as well as performs the stranding operation while the flextubes are still hot so that they adhere together without additional binders. Opt... | 03/20/2007 |
| 7190867 | Functionally strained optical fibers The present invention introduces a concept of “smart” ribbons, which use functionally tensioned optical fibers during the manufacture of fiber optic ribbons to create fiber ribbons with controlled geometrical configuration, optimized strain distribution and redu... | 03/13/2007 |
| 7011774 | Composite structural components containing thermotropic liquid crystalline polymer reinforcements for optical fiber cables A process for producing an optical fiber cable composite structural component, such as reinforcing members, buffer tubes, filler rods, jackets, and slotted cores, is disclosed. The composite structural components are produced by co-extruding a thermotropic liquid cr... | 03/14/2006 |
| 7010201 | Composite structural components containing thermotropic liquid crystalline polymer reinforcements for optical fiber cables A process for producing an optical fiber cable composite structural component, such as reinforcing members, buffer tubes, filler rods, jackets, and slotted cores, is disclosed. The composite structural components are produced by co-extruding a thermotropic liquid cr... | 03/07/2006 |
| 6999666 | Fibre for compensation of the cumulative chromatic dispersion in a fibre with negative chromatic dispersion The fiber is adapted to compensation of the chromatic dispersion and chromatic dispersion slope of an optical fiber with negative chromatic dispersion. It has, in a propagation mode other than the fundamental mode, a positive chromatic dispersion and a negative chro... | 02/14/2006 |
