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| Application No. | Application Title | Issue Date |
| 20120017644 | METHOD FOR DRAWING GRIN LENS FIBER When drawing of a GRIN lens from a preform is started, wastage of the preform is reduced and the amount of time taken from the start of elongation of the preform to the start of winding is reduced. A preform, to a lower end of which a weight formed of silica is fused, i... | 01/26/2012 |
| 20120014654 | OPTICAL FIBER AND METHOD FOR MANUFACTURING SAME Provided is an optical fiber having a large relative refractive index difference and a reduced transmission loss, as well as a manufacturing method therefor. An optical fiber preform 100, which is made of silica glass as the main element and which includes a core... | 01/19/2012 |
| 20110302966 | METHOD FOR MANUFACTURING A PRIMARY PREFORM The present invention relates to a method for manufacturing a primary preform for optical fibres, using an internal vapour deposition process, wherein a gas flow of doped undoped glass-forming gases is supplied to the interior of a hollow substrate tube having a supply ... | 12/15/2011 |
| 20110289980 | METHOD FOR PRODUCING OPTICAL FIBER USING LINEAR NON-CONTACT FIBER CENTERING An optical fiber production system and method are provided for producing optical fiber. An optical fiber is drawn from a preform in a furnace and passes through a treatment device under a controlled reduced pressure or partial vacuum in the range of 0.01 to 0.8 atm. The... | 12/01/2011 |
| 20110289979 | METHOD FOR PRODUCTING OPTICAL FIBER AT REDUCED PRESSURE An optical fiber production system and method are provided for producing optical fiber. An optical fiber is drawn from a preform in a furnace and passes through a treatment device under a reduced pressure in the range of 0.01 to 0.80 atm. The treatment device cools the ... | 12/01/2011 |
| 20110226020 | Glass-Tube Extended-Baking Process Disclosed is a method of heat treating quartz glass deposition tubes at between 900° C. and 1200° C. for at least 115 hours. The resulting deposition tubes are useful in forming optical preforms that can yield optical fibers having reduced added loss.... | 09/22/2011 |
| 20110132039 | GLASS PREFORM DRAWING APPARATUS A glass preform drawing apparatus feeds a glass preform into a heating furnace at a predetermined feeding speed and produces a glass rod having a uniform diameter. Specifically, the drawing apparatus for producing a glass rod having a desired outer diameter by heating a... | 06/09/2011 |
| 20110094269 | OPTICAL FIBER MANUFACTURING METHOD An optical fiber manufacturing method comprises preparing first base materials each of which includes at least one core forming part to form a core and a cladding forming part to form a cladding; performing a first elongating to form second base materials by forming a f... | 04/28/2011 |
| 20110016925 | METHOD FOR CONTINUOUSLY FORMING OPTICAL FIBER CONNECTOR GLASS AND OTHER CLOSE TOLERANCE TUBES A method and device for making high precision glass tubes. A glass rod is pushed into a heated chamber and the tube is pulled from the chamber. Preferably, both the push rate and the pull rate are controlled. Fiber optic glass ferrules and other components manufactured ... | 01/27/2011 |
| 20110011135 | METHOD OF MAKING A GLASS PREFORM The method that enables high yield production of a glass preform comprises an assembling step, a soot deposition step, a pulling step, a consolidation step, and a collapse step. In at least one traverse of the reciprocating movement during the soot deposition step, the ... | 01/20/2011 |
| 20100292065 | NONLINEAR OPTIC GLASSY FIBER, METHODS OF MAKING AND APPLICATIONS OF THE SAME A process for producing an optical glass fiber from crystal-glass phase material. In one embodiment, the process includes the step of providing a molten crystal-glass phase material in a container, wherein the temperature of the molten crystal-glass phase material is at... | 11/18/2010 |
| 20100281922 | Methods for producing optical fibers Methods for producing optical fibers along nonlinear paths include incorporating fluid bearings. An optical fiber is drawn from a preform along a first pathway, contacted with a region of fluid cushion of a fluid bearing, and redirected along a second pathway as the fib... | 11/11/2010 |
| 20100236293 | APPARATUS AND METHOD FOR MANUFACTURING TAPERED FIBER OPTIC COMPONENTS A system for producing a tapered fiber optic component, the system including a support platform, coupled with a first end of an optical fiber, a weight suspended from a second end of the optical fiber, such that the weight applies longitudinal pulling pressure on the op... | 09/23/2010 |
| 20100238538 | OPTICAL FIBER AMPLIFIER AND METHODS OF MAKING THE SAME A method is provided for forming an optical fiber amplifier. The method comprises providing a composite preform having a gain material core that includes one or more acoustic velocity varying dopants to provide a longitudinally varying acoustic velocity profile along th... | 09/23/2010 |
| 20100232754 | Method of making a low PMD optical fiber A method of making an optical fiber includes the steps of: providing an optical fiber preform; heating an end portion of the optical fiber preform so as to obtain a softened preform end portion; drawing the softened preform end portion to form the optical fiber; applyin... | 09/16/2010 |
| 20100220965 | OPTICAL FIBER STRUCTURE AND A METHOD OF PRODUCING THEREOF An optical waveguide including a core, a buffer surrounding the core, and a cladding surrounding the buffer. The core, the buffer and the cladding include silica glass. A refractive index of the buffer is substantially equal to a refractive index of pure amorphous silic... | 09/02/2010 |
| 20100202743 | PHOTONIC BAND GAP GERMANATE GLASS FIBERS A photonic band gap fiber and method of making thereof is provided. The fiber is made of a germanate glass comprising at least 30 mol % of a germanium oxide and has a longitudinal central opening, a microstructured region having a plurality of longitudinal surrounding o... | 08/12/2010 |
| 20100159242 | Semiconductor Core, Integrated Fibrous Photovoltaic Device A cane having optical properties includes: a core formed of a semiconductor material; and a transparent cladding formed of glass, glass-ceramic, or polymer coaxially oriented about the core, the cane may be used to produce a photovoltaic device, including: a semiconduct... | 06/24/2010 |
| 20100139323 | OPTICAL FIBER MANUFACTURING APPARATUS AND OPTICAL FIBER MANUFACTURING METHOD An optical fiber manufacturing apparatus for manufacturing an optical fiber by drawing a optical fiber preform, including: a drawing furnace having therein a muffle tube into which the optical fiber preform is inserted and heating the optical fiber preform; and a first ... | 06/10/2010 |
| 20100107699 | Method and system for producing an infrared transmitting fiber The invention relates to a method for producing an infrared transmitting fiber (50) comprising the steps of providing a preform (20) of the infrared transmitting fiber (50) to be produced, said preform (20) comprising a receptacle, which is t... | 05/06/2010 |
| 20100024486 | METHOD OF PRODUCING OPTICAL FIBER PREFORM A method of producing an optical fiber preform comprising: performing production of a glass preform having a valid portion to be drawn to an optical fiber and invalid portions disposed to both ends of the valid portion by depositing a porous silica glass body on a perip... | 02/04/2010 |
| 20090308106 | Electric furnace extension method and extension apparatus for optical fiber glass preform An electric furnace extending method and apparatus for an optical fiber glass body alignment when connecting the extension use body and pulling member and making it possible to immediately start the extension after the fusing of the connection portion. A centering mecha... | 12/17/2009 |
| 20090260401 | HEATER HAVING MULTI HOT-ZONES, FURNACE HAVING THE HEATER FOR DRAWING DOWN OPTICAL FIBER PREFORM INTO OPTICAL FIBER, AND METHOD FOR DRAWING OPTICAL FIBER USING THE SAME Disclosed is a heating element having a ring shape provided in a furnace for drawing an optical fiber from a large-diameter preform so as to heat and melt a preform. The heating element according to heating element includes at least two hot zones having different heatin... | 10/22/2009 |
| 20090241603 | OPTICAL FIBER MANUFACTURING METHODS Optical fiber manufacturing methods, which manufacture optical fibers with uniform characteristics using a simple device construction, are provided. The optical fiber manufacturing methods comprise, drawing a glass fiber from a glass preform by heating and melting one e... | 10/01/2009 |
| 20090241604 | OPTICAL FIBER DRAWING METHODS AND DRAWING FURNACES Drawing methods and drawing furnaces for drawing an optical fiber with small non-circularity by simple drawing system are provided. An optical fiber preform is received into a muffle tube and heated by a primary heater placed to surround the muffle tube. The optical fib... | 10/01/2009 |
| 20090201953 | MICROSTRUCTURED OPTICAL FIBERS AND MANUFACTURING METHODS THEREOF Optical devices and a method for manufacturing these devices. One optical device includes a core region having a first medium of a first refractive index n1, and includes a cladding region exterior to the core region. The cladding region includes a second medium ... | 08/13/2009 |
| 20090178440 | Method for fabricating micro/nano optical wires and device for fabricating the same A method of fabricating micro/nano optical wires is disclosed, which comprises: providing a micro/nano optical wire drawing device comprising a feeding wheel, a drawing wheel, and a heating unit; fastening one end of a micrometer-sized preform at the feeding wheel; maki... | 07/16/2009 |
| 20090158778 | Process for making a glass fiber with a core and two glass cladding layers and glass fiber made thereby The glass fiber for an optical amplifier has a glass core, a first glass cladding, and a second glass cladding. The core has a composition, in mol %, of Bi2O3, 30-60; SiO2, 0.5-40; B2O3, 0.5-40; Al2O... | 06/25/2009 |
| 20090139269 | Fiber Cure with Extended Irradiators A method for producing an optical fiber that includes a method for producing an optical fiber, said method comprising: (i) drawing a bare optical fiber from a preform along a first pathway at a rate of at least 10 m/sec; (ii) contacting said bare optical fiber with a re... | 06/04/2009 |
| 20090056383 | HOLEY OPTICAL FIBER WITH RANDOM PATTERN OF HOLES AND METHOD FOR MAKING SAME A random array of holes is created in an optical fiber by gas generated during fiber drawing. The gas forms bubbles which are drawn into long, microscopic holes. The gas is created by a gas generating material such as silicon nitride. Silicon nitride oxidizes to produce... | 03/05/2009 |
| 20090013726 | GLASS BASE MATERIAL, MANUFACTURING METHOD THEREOF, AND METHOD FOR MANUFACTURING OPTICAL FIBER When forming a taper portion on an end of a glass base material for manufacturing an optical fiber, the taper portion is formed by fusing the glass base material from a modified point after modifying a center-line displacement amount of a fusing point for a center line ... | 01/15/2009 |
| 20080216516 | METHOD OF MANUFACTURING OPTICAL FIBER A coating is applied on an optical fiber drawn from a melted tip of an optical-fiber preform. A glass spin is applied to a coated optical fiber by gripping the coated optical fiber with at least a pair of spinning applying rollers arranged in different levels with paral... | 09/11/2008 |
| 20080219622 | OPTICAL FIBRE COUPLING SYSTEM An optical fibre coupling structure comprising an optical fibre having an elongate input surface and shaped so that the diameter of the core of the fibre reduces in one dimension away from the input while increasing in the other dimension away from the input to form res... | 09/11/2008 |
| 20080174857 | Multi-fibre arrangement for high power fibre lasers and amplifiers An optical fibre arrangement has at least two optical fibre sections, each optical fibre section defining an outside longitudinally extending surface. The outside longitudinally extending surfaces are in optical contact with each other. The invention further provides fo... | 07/24/2008 |
| 20080056729 | Reducing Depolarisation The present invention provides a method for reducing spreading of a pulse in a transmission line, said spreading being as a result of polarization mode dispersion, comprising inducing predetermined polarization rotations of particle or wave components of the pulse in th... | 03/06/2008 |
| 20080041111 | Chemical powder deposition method for the manufacture of optical fiber preforms and optical fibers The specification describes the production of optical fibers and optical fiber preforms using Chemical Powder Deposition (CPD). In this process a slurry of silica powders and dopant powders in a liquid carrier is prepared and the inside surface of a silica glass starter... | 02/21/2008 |
| 20080022725 | Process for Producing a Low Polarization Mode Dispersion Optical Fiber In a process for producing a low polarization mode dispersion optical fiber, which comprises the steps of drawing a glass preform into an optical fiber and of spinning, during drawing, the optical fiber about an optical fiber axis, the spinning is imparted according to ... | 01/31/2008 |
| 20080022726 | Tapered optical fibers A method for fabricating tapered optical fibers is provided. The method includes applying thermal energy at a location defined along an elongated length (114, 116, 118) of an optical fiber (112). The method also includes varying the location in a first dir... | 01/31/2008 |
| 20080007830 | Glass photonic crystal band-gap devices with polarizing properties The invention is directed to polarizing devices that can be scaled to polarize electromagnetic radiation having wavelengths in ultraviolet to microwave range; and more particularly to devices suitable for use at visible and IR wavelengths. The device has a length, a wid... | 01/10/2008 |
| 20070209400 | Method For Producing An Optical Component According to a previously known method for producing an optical component from synthetic quartz glass, a coaxial arrangement comprising an outer jacket tube, an inner jacket tube that is provided with an internal bore, and a core rod whose bottom face rests on a thrust ... | 09/13/2007 |
