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Class 65/413 - With step of vapor deposition


Subclass of Class 65 - Glass manufacturing
Definition: Processes wherein the optical fiber, waveguide, or preform
No. of patents: 164
Last issue date: 08/02/2011


1          
NumberTitleIssue Date
7987686Manufacturing apparatus of porous glass base material
There is provided a manufacturing apparatus of a porous glass base material which can prevent soot from being formed on an upper surface (ceiling) of the process chamber, and reduce the amount of soot that comes off the upper surface and falls. A manufacturing appar...
08/02/2011
7854147Method for producing a semifinished product for an optical component of high homogeneity
Known methods for producing a semifinished product for an optical component of synthetic quartz glass of high homogeneity require a great number of forming or shaping steps for homogenization, which is troublesome in terms of energy and time and entails the risk tha...
12/21/2010
7707855Method for producing synthetic quartz glass with predetermined hydroxyl group content
A known method for producing synthetic quartz glass with a predetermined hydroxyl group content comprises the following steps: a porous SiO2 soot body is produced by flame hydrolysis or oxidation of a silicon-containing start compound and by layerwise dep...
05/04/2010
7574875Method for vapour deposition on an elongated substrate
Device and method for chemical deposition on an elongated member of vitreous material in which a rotating gripping member causes a first end portion of the elongated member to rotate. The second end portion of the elongated member is borne by a pair of supporting me...
08/18/2009
7461524Device and method for manufacturing a preform for optical fibres by chemical vapour deposition
A method and device for manufacturing a preform for optical fibres through chemical deposition on a substrate for deposition arranged vertically. A chemical deposition chamber includes at least one gripping member rotatably mounted about an axis Z-Z and adapted to h...
12/09/2008
7441417Outside vapor deposition apparatus for making optical fiber preform
An Outside Vapor Deposition (OVD) apparatus for making an optical fiber preform with uniform deposition of silica particles through uniform heating to the overall length of the preform includes a mandrel having a predetermined length and driven to rotate and a burne...
10/28/2008
7373055System 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
7332058Heat exchanger and process for devolatilizing polymers using same
Disclosed is a process for devolatilizing a polymer including passing the polymer through a devolatizer including a plate heat exchanger wherein the plates of the plate heat exchanger are heated by a plurality of heating tubes and wherein the heating tube including ...
02/19/2008
7299657Method of making high strain point glass
A method of forming a glass sheet includes obtaining a preform generated from a glass composition and conveying the preform through a channel having a temperature that decreases along a length of the channel to form a glass sheet having a predetermined width and thi...
11/27/2007
RE39535Method of making fused silica by decomposing siloxanes
This invention relates to the production of high purity fused silica glass through oxidation or flame hydrolysis of a vaporizable silicon-containing compound. More particularly, this invention is directed to the use of vaporizable, halide-free compounds in said prod...
04/03/2007
7181116Fiber optic cable and process for manufacturing
A preform for a low loss fiber optic cable and method and apparatus for fabricating such a preform is provided. The method includes providing AlCl3 and CVD precursors and locally doping CaCl3. Alkali and/or alkaline earth fluxing agents can be ...
02/20/2007
7171093Method for preparing an optical fibre, optical fibre and use of such
Methods for coating an optical fiber with optical fiber Bragg grating (FBG) with a hermetic coating, particularly a coating of carbon, are employed to avoid ingress of gases, vapors or fluids in the ambient environment. This ingress can be from water or hydrogen, wh...
01/30/2007
7165425Multi-tube burner and glass preform manufacturing method using the same
A multi-tube burner is provided which includes a cylindrical outermost nozzle and at least one cylindrical inner nozzle provided coaxially with the outermost nozzle to form annular jet openings for gases used to manufacture a glass preform. The angle between a cente...
01/23/2007
7160746GeBPSG top clad for a planar lightwave circuit
A method of depositing a top clad layer for an optical waveguide of a planar lightwave circuit. A GeBPSG top clad layer for an optical waveguide structure of a planar lightwave circuit is fabricated such that the top clad layer comprises doped silica glass, wherein ...
01/09/2007
7159418Method 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
7088900Alkali and fluorine doped optical fiber
Disclosed is an optical fiber having a core of SiO2 doped with fluorine and an alkali metal oxide dopant. The alkali metal oxide is selected from the group consisting of K, Na, Li, Cs and Rb and is provided in amount of at least 20 ppm wt. %. The fiber ha...
08/08/2006
7082791Apparatus for fabricating soot preform for optical fiber
An apparatus for fabricating a soot preform for an optical fiber. The soot preform is fabricated by depositing glass particles on a starting rod capable of being rotated and pulled up. The apparatus comprises elements as follows. A reaction chamber is used for depos...
08/01/2006
7073354Method for manufacturing optical fiber preform and burner apparatus for this method for manufacturing optical fiber preform
The present invention provides an optical fiber preform manufacturing method and a burner apparatus employed for this method. In this manufacturing method, when glass particles are synthesized in an oxy-hydrogen flame emitted from a burner to form a porous optical f...
07/11/2006
7065270Optical transmission device
An optical transmission device improved in optical coupling loss between light guides and optical elements and excelling in efficiency of light utilization is provided with light guides having light incidence/emission sections on plural stepped portions, a substrate...
06/20/2006
7050695Optical communication system
A transmission loss of each dried and water-saturated plastic optical fiber (POF) is measured. In range from 500 nm to 720 nm and from 785 nm to 810 nm, the transmission loss P1 of the dried POF and a difference of the transmission loss from the water-saturat...
05/23/2006
7000434Method of creating an angled waveguide using lithographic techniques
A waveguide having an angled surface is created by depositing an optical core material onto a substrate having two levels. In one embodiment, a high density plasma deposition may be used to deposit the optical core material. ...
02/21/2006
6988378Light weight porous structure
These glass bodies are light weight porous structures such as a boules of high purity fused silica (HPFS). More specifically, the porous structures are supports for HPFS mirror blanks. Porous glass is made utilizing flame deposition of pure silica or doped silica in...
01/24/2006
6946416Fused silica having improved index homogeneity
Fused silica articles exhibiting improved internal transmission and decreased absorption change when irradiated with a laser when compared with fused silica articles containing lower levels of aluminum. The articles also exhibit induced transmission when irradiated ...
09/20/2005
6910352Deposition of high fluorine content silica soot
The invention includes methods of making a fluorine doped soot particle. One method of the invention includes the steps of (1) delivering a silicon containing precursor to a first opening in a burner face; (2) delivering a source of oxygen to a second opening, where...
06/28/2005
6837076Method of producing oxide soot using a burner with a planar burner face
A burner and a method for producing an inorganic soot such as silica comprising a plurality of substantially planar layers having multiple openings therethrough formed by a micromachining process. The openings are in fluid communication with a precursor inlet and a ...
01/04/2005
6772611Making a glass rod with a step of measuring an incremental weight gain
The present invention provides a simple method for fabricating fiber-optic glass preforms having complex refractive index configurations and/or dopant distributions in a radial direction with a high degree of accuracy and precision. The method teaches bundling toget...
08/10/2004
6769273Method of manufacturing silica glass member and silica glass member obtained by the method
A silica glass member manufacturing method of the present invention includes the steps of making a silicon compound react in oxyhydrogen flame using a burner having a multi-tubular structure to obtain fine silica glass particles, depositing the fine silica glass par...
08/03/2004
6768856High germanium content waveguide materials
Germanium-silicon oxide, germanium-silicon oxynitride and silica-germania-titania materials and oxynitride materials suitable for fabricating optical waveguides for liquid crystal based cross-connect optical switching devices have a refractive index of from about 1....
07/27/2004
6763686Method for selective photosensitization of optical fiber
A method for increasing the photosensitivity of a selected portion of an optical fiber and for producing a grating in the selected portion of an optical fiber. The method includes the step of placing the selected portion of the optical fiber in a hydrogen containing...
07/20/2004
6751987Burners for producing boules of fused silica glass
Burners (14) are used to make glass bodies (19) from OMCTS. The burners have six concentric regions. Putting certain gases through the regions results in thicker bodies than can be achieved with existing techniques and with improved efficiency. ...
06/22/2004
6748768Apparatus and method of doping silica with fluorine during laydown
A method for doping silica soot with fluorine during laydown, including providing a bait rod, and providing a burner, wherein the burner emits a reactant flame. The method also including providing at least one first gas-feed separate from the burner, wherein the gas...
06/15/2004
6739156Maintaining a plug-free system during a silica soot creation process
The present invention is directed to a system and method for delivering liquid reactants through a burner assembly to form soot used in the manufacture of glass, and in particular, optical waveguides. Due to the tendency of liquid reactants to react to form solids w...
05/25/2004
6735981High heat capacity burners for producing fused silica boules
Burners and methods for producing fused silica members. The burner includes seven gas-emitting regions, including four regions for emitting a mixture of oxygen and combustible gas. ...
05/18/2004
6705127Methods of manufacturing soot for optical fiber preforms and preforms made by the methods
The present invention is directed to methods of producing soot used in the manufacture of optical waveguides. Both non-aqueous liquid reactants and aqueous solutions containing one or more salts are delivered through an atomizing burner assembly to form a homogenous...
03/16/2004
6705124High-density plasma deposition process for fabricating a top clad for planar lightwave circuit devices
A method for performing high aspect ratio gap fill during planar lightwave circuit top clad deposition. A plurality of waveguide cores are formed on a substrate, the waveguide cores having a plurality of gaps there between. A cladding layer is formed over the wavegu...
03/16/2004
6698248Methods and furnaces for fused silica production
Methods and apparatus for producing fused silica members having high internal transmission are disclosed. The apparatus and methods are capable of producing fused silica having internal transmission of at least 99.65%/cm at 193 nm....
03/02/2004
6672109Silica glass member, method for producing the same, and projection aligners using the same
A silica glass member for use with a light having a specific wavelength of 250 nm or shorter, in which the difference in the maximum and the minimum values of hydroxyl group concentration as measured in a plurality of points within a plane vertical to an ...
01/06/2004
6672110Method of forming an optical fiber preform by combustionless hydrolysis
A method for manufacturing a glass preform includes supplying a first gaseous or vapor phase composition to a reaction chamber; supplying water as a second gaseous or vapor phase composition to the reaction chamber; reacting the water and the first gaseou...
01/06/2004
6630029Fiber coating method and reactor
In a method of coating a CMC fiber, the fiber is passed through a reaction zone along a path substantially parallel to a longitudinal axis of the zone, a flow of fiber coating reactant is passed though the reaction zone, at least a portion of the flow of ...
10/07/2003
6622527Adjusting the hydrogen content of a preform for an UV-optical fiber
A core glass for making a preform for an optical fiber particularly useful for the transmission of ultraviolet radiation and methods for making the core glass are disclosed. The core glass is obtained by the flame hydrolysis of a silicon compound, deposit...
09/23/2003
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