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US20090078006 Method for Forming an Improved Weld Between a Primary Preform and a Silica Bar  
The invention relates to a method for welding one end of a primary preform and one end of a silica bar having different properties. The method includes the steps of projecting and fusing silica...
US20050120751 Method for manufacturing a preform for optical fibres, as well as a method for manufacturing optical fibres  
The present invention relates to a method for manufacturing a preform for optical fibres, wherein deposition of glass-forming compounds on the substrate takes place. The present invention...
US20110162413 METHOD OF MANUFACTURING OPTICAL FIBER BASE MATERIAL  
Provided is a method of manufacturing an optical fiber base material having at least four layer including a core, a first cladding, a second cladding containing fluorine, and a third cladding. The...
US20140208802 PLASMA DEPOSITION PROCESS FOR PRODUCING AN OPTICAL PREFORM WITH A CLADDING GLASS LAYER OF FLUORINE-DOPED QUARTZ GLASS  
In plasma deposition processes for producing an optical preform according to the POD method, a cladding glass layer composed of fluorine-doped quartz glass is produced by means of a plasma torch...
US20060288739 Plasma torch and preform fabrication system using the method  
A system for fabricating an optical fiber preform including glazing the outside surface of the preform using inductive heating, the system including a plasma torch for localized heating of the...
US20070125127 METHODS FOR MODIFYING OVALITY OF OPTICAL FIBER PREFORMS  
Methods for modifying preform core ovality during and subsequent to the formation of an optical fiber preform. After MCVD deposition forms the core rod, but prior to overcladding of the core rod,...
US20090260400 Method for Producing a Tubular Semifinished Product From Fluorine-Doped Quartz Glass  
To improve a generally known method for producing a tubular semifinished product from fluorine-doped quartz glass such that it is possible to produce a tubular semifinished product of...
US20110016926 METHOD OF MANUFACTURING OPTICAL FIBER PREFORM USING PLASMA TORCH  
A method of manufacturing an optical fiber preform by depositing glass fine particles onto a surface of a glass rod while the glass rod is reciprocated relative to a plasma torch, including:...
US20150040615 PARTIAL VACUUM OPERATION OF ARC DISCHARGE FOR CONTROLLED HEATING  
An electrical discharge, suitable for heating optical fibers for processing, is made in a controlled partial vacuum, such that saturation of available ionizable gas molecules is reached. The...
US20070295033 Plasma Torch for Overcladding an Optical Fiber Preform  
Disclosed is a plasma torch for overcladding a primary preform of an optical fiber. The plasma torch includes a confinement tube for confining an induced plasma and a torch base. The torch base...
US20100034998 QUARTZ GLASS TUBE AS A SEMIFINISHED PRODUCT FOR PREFORM AND FIBER MANUFACTURE, AND METHOD FOR MAKING THE QUARTZ GLASS TUBE  
To improve a known method for making a quartz glass tube as a semifinished product for the manufacture of optical fibers, the tube comprising an inner fluorine-doped quartz glass layer and an...
US20110177333 METHOD FOR PRODUCING A TUBULAR SEMIFINISHED PRODUCT FROM QUARTZ GLASS, METHOD FOR PRODUCING AN OPTICAL COMPONENT USING THE SEMIFINISHED PRODUCT, AND SEMIFINISHED PRODUCT CONSISTING OF QUARTZ GLASS DOPED WITH FLUORINE  
The aim of the invention is to improve a generally known method for producing quartz glass doped with fluorine, wherein SiO2 particles are formed in the presence of fluorine by means of a plasma...
US20110058780 SINGLE-MODE FIBER AND PRODUCTION METHOD THEREOF  
A single mode fiber having a core, an inner cladding, a depressed cladding, and an outer cladding composed of pure silica glass. The core is surrounded in sequence with the inner cladding and the...
US20120224254 Rare-Earth-Doped Amplifying Optical Fiber  
An amplifying optical fiber includes an inner core, an inner cladding, a depressed trench, and an outer cladding (e.g., an outer optical cladding). Typically, the inner core includes a main matrix...
US20140185996 BENDING INSENSITIVE SINGLE MODE OPTICAL FIBER  
In one aspect of the invention, the bend insensitive single-mode optical fiber includes a core layer and cladding layers having an inner cladding layer, a trench cladding layer and an outer...
US20140270665 LARGE CORE MULTIMODE OPTICAL FIBERS  
The specification describes multimode optical fibers produced by improved methods that reduce the manufacturing cost. These methods may also be more efficient in terms of power loss. In one of the...
US20070283721 Method Of Producing An Optical Fiber Preform  
Glass can be synthesized and deposited at a high rate by the inside CVD method using a plasma burner in a manner such that unconsolidated portions or bubbles are little generated. The method...
US20110100062 REFRACTION-SENSITIVE OPTICAL FIBER, QUARTZ GLASS TUBE AS A SEMI-FINISHED PRODUCT FOR THE MANUFACTURE-THEREOF AND METHOD FOR THE MANUFACTURE OF THE FIBER  
A known refraction-sensitive optical fiber comprises a core zone with an index of refraction nK, a jacket zone surrounding the core zone, said jacket zone having an index of refraction nM, and an...
US20120040184 Method of Fabricating an Optical Fiber Preform  
A method of manufacturing an optical fiber preform includes preparing from a first deposition tube a first rod that includes a central core and preparing from a second deposition tube a second rod...
US20050262876 Method for plasma overcladding a fluorine-doped optical fiber preform tube  
The field is that of methods for providing fiber-optic final preforms obtained by external plasma overcladding build-up around a primary preform. The method involves providing a final preform...
US20080094716 Transmission-Type Display Panel and Method of Manufacturing the Same  
A transmission-type display panel according to the present invention includes a plurality of transparency control regions arranged in an array, a non-transparent border region existing around each...
US20100095707 FABRICATING OPTICAL WAVEGUIDES  
Methods and devices are provided for fabricating waveguides. Some such methods involve forming at least a portion of the waveguide using an embossing process for shaping a substrate and/or other...
US20050229639 Optical fiber preform, method for manufacturing thereof, and optical fiber obtained by drawing thereof  
Even if an optical fiber obtained by drawing a preform is exposed to hydrogen atmosphere, an OH peak in the optical fiber at wavelength of about 1385 nm hardly rises regardless of the condition of...
US20150218036 METHOD FOR PRODUCING AN OPTICAL PREFORM WITH A POD CLADDING GLASS LAYER  
The invention relates to a plasma deposition process for producing an optical preform, which is characterized by a cladding glass layer having a non-round internal cross-section together with high...
US20070289332 Method for Overcladding an Optical Fiber Preform  
Method for overcladding an optical fiber preform with a given target diameter (D0) of the final preform includes providing a primary preform to be overcladded, and successively depositing first...
US20120324958 METHODS FOR MANUFACTURING OPTICAL FIBER PREFORM AND METHODS FOR MANUFACTURING OPTICAL FIBER  
A method for manufacturing an optical fiber preform, including: a) providing a lining tube as a substrate tube, and doping and depositing by a PCVD or an MCVD process; b) in the reacting gas of...
US20080295541 METHOD OF MANUFACTURING AN OPTICAL FIBER PREFORM USING A HIGH FREQUENCY INDUCTION THERMAL PLASMA  
When manufacturing an optical fiber preform by feeding at least glass raw material, dopant material and oxygen gas to a high frequency induction thermal plasma torch to synthesize glass particles...
US20110056245 METHODS FOR MODIFYING OVALITY OF OPTICAL FIBER PREFORMS  
Methods for modifying preform core ovality during and subsequent to the formation of an optical fiber preform. After MCVD deposition forms the core rod, but prior to overcladding of the core rod,...
US20050257570 Method and device for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method  
The invention relates to a method for producing a blank mold from synthetic quartz glass by using a plasma-assisted deposition method, according to which a hydrogen-free media flow containing a...
US20130022329 Silicon Germanium Core Fiber  
A process and apparatus for making silicon or silicon/germanium core fiber is described, which uses a plasma process with reducing agent to make a preform. The process also makes the...
US20120312054 APPARATUS AND METHOD FOR MAKING AN OPTICAL FIBER PREFORM  
Apparatus and methods for making an optical fiber preform at low cost avoiding the apparatus from being damaged are provided. Apparatus for making an optical fiber preform by depositing glass...
US20110247369 INTERNAL VAPOUR DEPOSITION PROCESS  
A method for manufacturing a primary preform for optical fibres using an internal vapour deposition process, including the steps of: i) providing a hollow glass substrate tube having a supply side...
US20050252246 Method for manufacturing optical fiber  
A method for manufacturing an optical fiber by contacting the optical fiber during the draw operation with deuterium, a deuterium-containing gas mixture or a deuterium ion plasma. The treatment or...
US20110067451 Method of Fabricating Optical Fiber Using An Isothermal, Low Pressure Plasma Deposition Technique  
An isothermal, low pressure-based process of depositing material within a substrate has been developed and results in creating an extremely narrow reaction zone within which a more uniform and...
US20100162768 METHOD AND APPARATUS FOR MANUFACTURING OPTICAL FIBER PREFORM USING HIGH FREQUENCY INDUCTION THERMAL PLASMA TORCH  
Provided is an optical fiber preform manufacturing method comprising supplying a high-frequency induction thermal plasma torch with at least glass raw material, dopant raw material, and oxygen,...
US20140157829 METHOD FOR ACTIVATING AN INNER SURFACE OF A HOLLOW GLASS SUBSTRATE TUBE FOR THE MANUFACTURING OF AN OPTICAL FIBER PREFORM  
A method for activating an inner surface of a hollow glass substrate tube for manufacturing an optical fiber preform including depositing a plurality of activation glass layers on the inner...
US20110247368 INTERNAL VAPOUR DEPOSITION PROCESS  
A method for manufacturing a primary preform for optical fibres using an internal vapour deposition process, including the steps of: i) providing a hollow glass substrate tube having a supply side...
US20070289334 Method For Producing A Photonic Crystal Comprised Of A Material With A High Refractive Index  
The invention relates to a process for producing a three-dimensional photonic crystal which consists of a material with high refractive index. To this end, a photonic crystal which consists of a...
US20100162769 METHOD AND APPARATUS FOR MANUFACTURING OPTICAL FIBER PREFORM USING HIGH FREQUENCY INDUCTION THERMAL PLASMA TORCH  
Provided is an apparatus and method for manufacturing an optical fiber preform by supplying a high-frequency induction thermal plasma torch with at least glass raw material, dopant raw material,...
US20060196230 Plasma apparatus and apparatus for fabricating optical fiber preform by using the same  
A plasma apparatus is disclosed. The plasma apparatus includes an internal electrode having a hollow section for receiving precursor gas and oxygen gas therein, an external electrode accommodating...
US20070044513 Shrouded-plasma process and apparatus for the production of metastable nanostructured materials  
A method and apparatus for producing metastable nanostructured materials employing a ceramic shroud surrounding a plasma flame having a steady state reaction zone into which an aerosol or liquid...
US20090173107 METHOD FOR MANUFACTURING A PREFORM AS WELL AS A METHOD FOR FORMING OPTICAL FIBRES FROM SUCH A PREFORM  
A method for manufacturing a preform for optical fibers by means of a vapour deposition process, wherein plasma conditions are created and wherein the plasma is moved back and forth along the...
US20070062222 Method for charging particles in a material manufacturing process  
A method for charging particles used for processing of a material. At least a gaseous reactant is supplied and oxidizing gas is supplied to the reactant. The oxidizing gas is charged electrically...
US20050284184 Methods for optical fiber manufacture  
The specification describes a method for addressing defects in the center of the core of an optical fiber that are formed during high temperature steps associated with collapsing a hollow core...
US20130319052 METHOD AND APPARATUS FOR CLEAVING AND CHAMFERING OPTICAL FIBER  
A process and apparatus for cleaving an optical fiber are provided. The process includes window stripping the optical fiber using a laser source to create a window strip. The window stripped...
US20080141724 DIELECTRIC WAVEGUIDE AND METHOD OF MAKING THE SAME  
In general, in one aspect, the invention features a method that includes exposing a surface to a first gas composition under conditions sufficient to deposit a layer of a first chalcogenide glass...
US20050103057 Method for making optical fiber preform having ultimately low pmd through improvement of ovality  
A method for making an optical fiber preform having an ultimately low PMD (Polarization Mode Dispersion) through improvement of ovality is provided. This method has several collapse steps for...
US20120263428 LARGE MODE FIELD ACTIVE OPTICAL FIBER AND MANUFACTURE METHOD THEREOF  
A large mode field active optical fiber and manufacture method thereof is provided. The large mode field active optical fiber is formed by drawing a fiber core (1), a quartz glass internal...
US20110302966 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...
US20110232332 RING PLASMA JET METHOD AND APPARATUS FOR MAKING AN OPTICAL FIBER PREFORM  
A method and apparatus for making an optical fiber preform, including injecting a plasma gas source into the first end of a tubular member; generating a ring plasma flame with the plasma gas...

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