Did You Know...
...that the x-ray was discovered purely by accident? When German physicist Wilhelm Konrad von Roentgen was experimenting with cathode rays in 1895, he put an activated Crookes tube in a book and went out to lunch. When he returned, he discovered that a key that had also been placed in the book showed up as an image on the developed film!
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| Number | Title | Issue Date |
| 8181488 | 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 overcladding layers by projecting and vitrifying silica parti... | 05/22/2012 |
| 8037718 | Method for manufacturing optical fiber preform Method for manufacturing an optical fiber perform, which forms a glass fine particle deposition portion composed of glass fine particles on a glass rod, and suspends the glass fine particle deposition vertically into a heating furnace to heat, and transparentize, th... | 10/18/2011 |
| 7779652 | Method and apparatus for producing a glass body The invention starts from a known method for producing a glass body, comprising forming a cylindrical blank by successive deposition of a plurality of material layers on the outer surface of a substrate body which is rotating about its longitudinal axis, by using an... | 08/24/2010 |
| 7441417 | Outside 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 |
| 7437893 | Method for producing optical glass This invention provides a method for manufacturing an optical glass in order to prevent the deterioration of the burner used in the synthesis of glass particles that form the optical glass, and to obtain a stable quality optical glass. In this invention, the number ... | 10/21/2008 |
| 7404302 | Method of depositing glass soot A method for deposition glass soot for making an optical fiber preform. A fuel and a glass precursor are flowed to a burner flame forming glass soot which is deposited onto a glass target. By first depositing an insulating layer of glass soot with a low velocity bur... | 07/29/2008 |
| 7387000 | Method of producing a hollow glass cylinder with suspension during sintering The invention relates to a method for producing a silica glass tube which is characterized by depositing SiO2 particles on an elongate support that rotates about its longitudinal axis, thereby producing a porous with a cylindrical inner bore. Said blank i... | 06/17/2008 |
| 7310975 | Method and device for producing a cylindrical body consisting of quartz glass A known method for producing a cylindrical body uses a precipitation assembly (5) consisting of several precipitators (4), to which a parent substance is fed via medium supply lines (9), whereby the precipitation assembly (5) completes a ... | 12/25/2007 |
| 7299659 | Method for manufacturing optical fiber preforms Method and burner for increasing the deposition rate of porous glass deposit in the manufacture of optical preforms, by modifying the cross-sectional shape of the flow of glass particles impacting onto a target preform. In particular, the cross-section of the flow o... | 11/27/2007 |
| 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 |
| 7250114 | Methods of finishing quartz glass surfaces and components made by the methods Methods of surface finishing a component useful for a plasma processing apparatus are provided. The component includes at least one plasma-exposed quartz glass surface. The method includes mechanically polishing, chemically etching and cleaning the plasma-exposed su... | 07/31/2007 |
| RE39535 | Method 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 |
| 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 |
| 7143612 | Method of manufacturing glass particulate sedimentary body, and method of manufacturing glass base material To provide a method for producing a glass particle deposit and a method for producing a glass preform, in which outer diameter variation of the glass particle deposit can be reduced to thereby improve quality. A flow rate of clean gas (CG) introduced into a containe... | 12/05/2006 |
| 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 |
| 7088900 | Alkali 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 |
| 7073354 | Method 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 |
| 7055345 | Glass base material manufacturing apparatus and glass base material manufacturing method An apparatus for manufacturing a glass base material, which is a base material of an optical fiber, comprising: a base rod, around and along which said glass base material is formed; a burner that hydrolyzes and accumulates a gas material, which is a base material o... | 06/06/2006 |
| 7027386 | Read-only optical recording medium with ZnO near-field optical interaction layer This invention relates to a read-only near-field optical disk using a zinc-oxide (ZnO) nano-structured thin film as the localized near-field optical interaction layer. This read-only near-field optical disk is a multi-layered body at least comprising; (a) a transpar... | 04/11/2006 |
| 7013678 | Method of fabricating graded-index optical fiber lenses A GRIN fiber lens is fabricated by the steps of providing a graded index glass preform, thinning the graded index preform to remove a sufficient thickness of the graded glass to establish a desired Δn, and drawing a graded index optical fiber from the thinned grade... | 03/21/2006 |
| 6988379 | Method of manufacturing large capacity preforms by MCVD The invention provides a low cost method of manufacturing high capacity preforms by chemical vapor deposition. More particularly, there is described a method of manufacturing an optical fiber preform, which method comprises the steps of providing a substrate tube of... | 01/24/2006 |
| 6988382 | Method for manufacturing glass-base-material by measuring the weight of the material An apparatus for manufacturing a glass-base-material, which is a base material of an optical fiber, includes a driving unit that drives a glass rod around an axis of the glass rod; a burner for accumulating glass soot around outside surface of the glass rod, which i... | 01/24/2006 |
| 6988380 | Method of silica optical fiber preform production A method is disclosed for the manufacture of optical fiber preforms using plasma enhanced chemical vapor deposition (PECVD). The invention consists of a cylindrical reactor in which material such as flourine-doped silica glass is deposited on a cylindrical silica ro... | 01/24/2006 |
| 6941772 | Apparatus and method for manufacturing glass-base-material An apparatus for manufacturing a glass-base-material, which is a base material of an optical fiber, includes a driving unit that drives a glass rod around an axis of the glass rod; a burner for accumulating glass soot around outside surface of the glass rod, which i... | 09/13/2005 |
| 6941773 | Apparatus for manufacturing an optical fiber soot, and method for manufacturing an optical fiber soot using thereof An apparatus for manufacturing an optical fiber soot, which comprises a core partition having an opening portion at core burner side provided on a periphery of a core burner, in a reactor of the apparatus to be used in a conventional VAD method. ... | 09/13/2005 |
| 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 |
| 6928220 | Sol-gel-derived optical fiber preform and method of manufacture A method forms an optical fiber preform. The method includes forming a sol-gel-derived rod having a first diameter. Forming the sol-gel-derived rod includes preparing a sol-gel solution including at least 3 mole % of a catalyst. The sol-gel solution is allowed to un... | 08/09/2005 |
| 6923024 | VAD manufacture of optical fiber preforms with improved deposition control The specification describes a VAD method for dynamically controlling the growth rate of both the core soot and the cladding soot in response to separate growth monitors. ... | 08/02/2005 |
| 6895783 | Method of producing optical fiber preform A plurality of glass particles synthesizing burners are arranged at a predetermined burner interval opposite to a rotating starting rod. The starting rod and the glass particles synthesizing burners are relatively parallely reciprocally moved, and the soot depositio... | 05/24/2005 |
| 6889529 | Method of manufacturing optical fiber preform A method for producing an optical fiber preform is provided in which the variation of the outer diameter in the longitudinal direction is minimized and a target quantity of glass is accumulated as a whole. Based on a predetermined relationship between three variable... | 05/10/2005 |
| 6883351 | Method for fabricating a low polarization mode dispersion optical fiber The method of fabricating an optical waveguide fiber from a preform having a centerline aperture which includes reducing the pressure in the centerline aperture, then increasing the pressure in the centerline aperture to a pressure in order to improve uniformity, ci... | 04/26/2005 |
| 6873753 | Columnar optical device and method for manufacturing the same An optical device having an optical circuit integrated on a side of a substrate having a column of substrate material. The column of substrate material preferably includes a cylindrical portion having a circular cross-section. The optical device preferably includes ... | 03/29/2005 |
| 6862900 | Method and apparatus for reducing stress between depositions within a substrate tube A method and apparatus for forming a glass article such as an optical fiber having a substantially matching viscosity across an interface associated with a first section and a second section of the optical fiber is disclosed herein. The first section has a first hal... | 03/08/2005 |
| 6843076 | Single step laydown method of making dry fiber with complex fluorine doped profile A method of making an optical waveguide preform includes forming a preform including a first portion and a second radial portion, wherein the second portion includes a dopant, and wherein the first portion exhibits a density greater than the second portion. The meth... | 01/18/2005 |
| 6837077 | Method for producing soot body Three or more glass particle synthesizing burners are arranged to be opposed to a rotating glass rod. The glass rod and the glass particle synthesizing burners are reciprocated in parallel and relatively to deposit glass particles synthesized by the burners on the s... | 01/04/2005 |
| 6830781 | Method for producing an SiO2 blank and apparatus for performing said method In a known method for producing an SiO2 blank, SiO2 particles are formed in a burner flame assigned to a deposition burner and are deposited under the effect of an electrical field on a deposition surface of a carrier rotating about its longitu... | 12/14/2004 |
| 6802190 | Method of fabricating a GRIN fiber A method for fabricating a GRIN fiber includes forming a tube of silica-glass having a tubular core and a concentric tubular cladding adjacent and external to the tubular core. The core has a dopant density with a radially graded profile. The method includes partial... | 10/12/2004 |
| 6779364 | Cladding-pumped optical fiber and methods for fabricating Disclosed is an optical fiber article for receiving pump radiation of a first wavelength for amplifying or generating radiation of a second wavelength. The optical fiber article includes a core for propagating light of the second wavelength. The core has a first ind... | 08/24/2004 |
| 6769273 | Method 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 |
