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| Number | Title | Issue Date |
| 8161772 | Method for the production of an optical component made from quartz glass In a conventional method for the production of an optical component made from quartz glass, a coaxial arrangement with a core rod, surrounded by a quartz glass envelope tube comprising an evacuable inner drilling, is introduced in the vertical direction into a heati... | 04/24/2012 |
| 8132429 | Method for fabricating an optical fiber, preform for fabricating an optical fiber, optical fiber and apparatus The method for fabricating an optical fiber comprises the steps of inserting a primary optical fiber preform (11) having a first primary axis (x1) and an outer surface (111) into an overcladding tube (12) having a second primary axis (x | 03/13/2012 |
| 8033142 | Method for fabricating an optical fiber, preform for fabricating an optical fiber, optical fiber and apparatus The method for fabricating an optical fiber comprises the steps of inserting a primary optical fiber preform (11) having a first primary axis (x1) and an outer surface (111) into an overcladding tube (12) having a second primary axis (x | 10/11/2011 |
| 7946134 | MCVD optical fiber method with partial removal of substrate tube The specification describes methods for the manufacture of very large optical fiber preforms wherein the core material is produced by MCVD. Previous limitations on preform size inherent in having the MCVD starting tube as part of the preform process are eliminated b... | 05/24/2011 |
| 7854146 | Method for production of an optical component from quartz glass The production of an optical component from quartz glass by elongation of a coaxial arrangement of a core rod and a hollow cylinder is known. The arrangement is thus introduced into a heating zone, such that the lower end begins to partly soften and the component dr... | 12/21/2010 |
| 7836728 | Increasing the cladding-to-core ratio (D/d) of low D/d ratio core rods in optical fiber performs An optical fiber preform is fabricated by inserting a number of core body pieces end-to-end inside a glass cylinder, wherein the pieces may have a cladding-to-core diameter (D/d) ratio within the range of one to four. The cylinder with the inserted core body pieces ... | 11/23/2010 |
| 7752869 | Optical fiber preform, method for manufacturing thereof, and optical fiber obtained by drawing thereof A method for manufacturing a preform having a core and a multilayer clad, includes covering a circumference of a rod including at least the core and an inner clad layer with a first tube including at least a high viscosity clad layer, and unifying the rod and the fi... | 07/13/2010 |
| 7430881 | Method of making an optical fiber attachment device Low-loss large diameter optical waveguide attachment devices (i.e., pigtails) and methods and systems of making the same are provided. The optical waveguide attachment devices may include an optical fiber (or other type waveguide) embedded in a larger diameter carri... | 10/07/2008 |
| 7317856 | Method of making optical fiber and optical fiber made by the method Provided is a method of manufacturing an optical fiber preform from which an optical fiber having the desired characteristics can easily be produced. The method comprises the steps of: (1) preparing an intermediate preform for manufacturing an optical fiber preform;... | 01/08/2008 |
| 7305166 | Graded refractive index optical fibers, optical components fabricated to include plural graded index optical fibers and methods of fabricating the same A graded-refractive-index optical fiber is fabricated by providing an elongated core rod of a first material including a concentration of high-refractive-index ions and a cladding tube of a second material including a lower concentration of the high-refractive-index... | 12/04/2007 |
| 7263264 | Method of manufacturing optical waveguide Two or more optical waveguides are placed in a treatment vessel. The optical waveguides in the treatment vessel are treated with a chemical substance containing at least one of deuterium, hydrogen, and a compound thereof. The treating includes causing molecules of t... | 08/28/2007 |
| 7248763 | Optical resonators with reduced OH-content This application describes optical resonators substantially free of hydrogen and hydroxyl radicals and related fabrication techniques. ... | 07/24/2007 |
| 7187822 | Fiber tip fluid output device A fiber tip fluid output device is provided for holding a fiber tip in an electromagnetic energy cutting apparatus and for directing water particles over a radiation delivery end of the fiber tip. The fiber tip fluid output device includes a generally cylindrical bo... | 03/06/2007 |
| 7184636 | Method of controllably doping a glassy optical preform with water A method of manufacturing a glassy optical preform is disclosed that includes providing a preform having a silica soot layer and then sintering the soot layer into a glassy layer, and water is selectively added to the preform by exposing the soot layer to a gaseous ... | 02/27/2007 |
| 7159418 | Method of producing synthetic quartz glass Fluorine-containing synthetic quartz glass is produced by feeding silica-forming material, hydrogen, and oxygen gases from a burner to a reaction zone, flame hydrolyzing the silica-forming material in the reaction zone to form particles of silica, depositing the sil... | 01/09/2007 |
| 7143611 | Rod-In-Tube optical fiber preform assembly and method having reduced movement Embodiments of the invention include an optical fiber preform assembly and a method for making optical fiber using the preform assembly. The assembly includes a preform core rod, at least one overclad tube formed around the preform core rod, a handle attached to one... | 12/05/2006 |
| 7133591 | Jacket tube made of synthetically produced quartz glass and optical fibres produced using said jacket tube Jacket tubes of synthetically produced quartz glass as a semi-finished product for producing an outer cladding glass layer of an optical fiber are generally known. The invention relates to an improvement of a jacket tube in terms of inexpensive producibility and of ... | 11/07/2006 |
| 7107795 | Method for forming high-density multicore phase-locked fiber laser array A method for forming a multicore fiber laser array includes inserting a plurality of rare-earth doped rods into a corresponding plurality of hollow capillaries, and arranging the resulting plurality of filled capillaries into a preform pattern. The plurality of fill... | 09/19/2006 |
| 7089765 | Method of making a jacketed preform for optical fibers using OVD On the basis of a known process for the production of a preform for an optical fiber for optical data transmission technology, the productivity of the process for the production of complex refractive index profiles is to be improved by providing a quartz glass subst... | 08/15/2006 |
| 7089766 | Method of forming optical fiber preforms Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphe... | 08/15/2006 |
| 7085463 | Optical fiber and optical transmission line An optical fiber has a zero dispersion wavelength in a wavelength range of 1350 to 1410 nanometers; a dispersion of 2 to 8 ps/nm/km at a wavelength of 1550 nanometers; a dispersion slope of a positive value and not more than 0.05 ps/nm2/km at a wavelength... | 08/01/2006 |
| 7080529 | Method for making large diameter optical waveguide having Bragg grating and being configured for reducing the bulk modulus of compressibility thereof The present invention provides a method for making a multicore large diameter optical waveguide having a cross-section of at least about 0.3 millimeters, two or more inner cores, a cladding surrounding the two or more inner cores, and one or more side holes for redu... | 07/25/2006 |
| 7076141 | Low water peak optical waveguide fiber Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical wav... | 07/11/2006 |
| 7068901 | Optical fiber preform producing method, optical fiber production method, and optical fiber An optical fiber preform comprises a central core portion having a maximal value Nc of refractive index in the center, and outside the central core portion, comprising at least a depressed portion having a minimal value Nd of refractive index, a ring portion having ... | 06/27/2006 |
| 7062942 | Method of manufacturing glass optical fibre preforms and optical fibres A method of making an optical fibre including providing an increased diameter portion on a rod. The rod is assembled by positioning the rod in a tube such that an annular gap is defined between an outer surface of the rod and an inner surface of the tube, and such t... | 06/20/2006 |
| 7028508 | Method for producing an optical fiber and optical fiber In the known method for producing an optical fiber, a coaxial arrangement comprising a core rod and an outer jacket tube is elongated, the coaxial arrangement being supplied in a vertical orientation to a heating zone and being softened therein zonewise, starting wi... | 04/18/2006 |
| 7021083 | Manufacture of high purity glass tubes A glass tube for use in an optical fiber preform is produced by applying a first soot on an end face of a starting member to form an elongated, porous cylindrical soot core having a first density, and applying a second soot including SiO2 on the periphery... | 04/04/2006 |
| 7016582 | Polarized wave holding optical fiber, and method of producing the same Based on an intermediate 20A in which a cladding portion 22 is formed on the outer periphery of a core portion 21, a pair of holes 23 and 24 are provided parallel to the z axis on both sides of the core portion 21 within the... | 03/21/2006 |
| 7010203 | Optical fiber manufacturing method and optical fiber An object of the present invention is to provide an optical fiber manufacturing method and an optical fiber in which an increase in the transmission loss is suppressed by preventing hydroxyl group from entering near the core portion. This invention provides a... | 03/07/2006 |
| 6966201 | High-temperature sintering of soot bodies doped using molecular stuffing Techniques are described for fabricating a preform from a soot body. In one described technique, a soot body is loaded into a substrate tube, and the position of the soot body is stabilized within the tube. The tube is then rotated around its longitudinal axis. Heat... | 11/22/2005 |
| 6956876 | Method and apparatus for coupling a multimode laser to a multimode fiber A method and apparatus are disclosed for coupling a multimode laser to a multimode fiber using a multimode tapered structure. The disclosed multimode tapered structure accepts an optical beam having a highly elliptical beam shape and converts the optical beam for ac... | 10/18/2005 |
| 6952517 | Method for the manufacture of optical fibers, improved optical fibers, and improved raman fiber amplifier communication systems The specification describes an improved optical fiber design in which the criteria for high performance in a Raman amplified optical system, such as moderate effective area, moderate dispersion, low dispersion slope, and selected zero dispersion wavelength, are simu... | 10/04/2005 |
| 6944382 | Low water peak optical waveguide fiber Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical wav... | 09/13/2005 |
| 6938443 | Method for the manufacture of a quartz glass preform for an optical fiber The invention relates to a method for manufacture of a quartz glass preform for an optical fibre consisting of the following steps: preparation of a hollow cylinder made of porous quartz glass which exhibits an inner layer with a doping substance which increases the... | 09/06/2005 |
| 6935050 | Method and apparatus reducing metal impurities in optical fiber soot preforms A method and apparatus for producing an optical fiber preform including a metal remover, which operates by adsorption, that removes gaseous transition metal impurities present in a process gas to be provided to a furnace for drying, doping or consolidation. The appa... | 08/30/2005 |
| 6928841 | Optical fiber preform manufacture using improved VAD The specification describes a VAD method for producing optical fiber preforms by depositing soot onto a solid core rod. The solid core rod preferably has a uniform composition, doped or undoped, suitable for the center core region of the preform. The primary claddin... | 08/16/2005 |
| 6904772 | Method of making a glass preform for low water peak optical fiber Optical waveguide fiber having low water peak as well as optical waveguide fiber preforms and methods of making optical waveguide fiber preforms from which low water peak and/or low hydrogen aged attenuation optical waveguide fibers are formed, including optical wav... | 06/14/2005 |
| 6904213 | Step index optical fiber with doped cladding and core, a preform, and a method of fabricating such a fiber The invention provides a step index optical fiber which presents cladding having an index lower than the index of silica and a core with an index higher than the index of silica. The fiber is obtained by drawing a preform made by chemical vapor deposition using a de... | 06/07/2005 |
| 6837075 | Glass fiber fixative and fixing process A glass fixative composition for bonding glass materials to non-glass materials is provided. The fixative composition is selected for its thermal expansion coefficient, its viscosity, its adhesion to glass, melting point, and bond strength. The glass fixative is in ... | 01/04/2005 |
| 6827883 | Optical fiber preform and the method of producing the same An optical fiber preform (1) serving as a material of an optical fiber has a shoulder portion (12) thrusting beyond a middle portion (M) in a base end region (K) which is on the upper side when the optical fiber preform is suspended for a drawing proce... | 12/07/2004 |
