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| Number | Title | Issue Date |
| 8074474 | Fiber air turn for low attenuation fiber A method for forming an optical fiber includes drawing the optical fiber from a glass supply and treating the fiber by maintaining the optical fiber in a treatment zone wherein the fiber is cooled at a specified cooling rate. The optical fiber treatment reduces the ... | 12/13/2011 |
| 8015845 | Glass tube processing method In a glass processing method according to the invention, in the case of performing chemical vapor deposition or diameter shrinkage of a substrate glass tube G by relatively moving a heating furnace 20 comprising a heating element 21 for annularly enclo... | 09/13/2011 |
| 8001806 | Indirect heat type double-clad crystal fiber fabrication method A double-clad optical fiber fabrication method including the steps of: preparing a crystal fiber, inserting the crystal fiber into a silica capillary, attaching a sapphire tube to the periphery of the silica capillary, and applying a laser beam to the sapphire tube ... | 08/23/2011 |
| 7694535 | Method of fiberizing molten glass Methods for substantially improving the stability of a melting furnace system including bushings and cooling apparatus for converting molten mineral material to continuous fibers is disclosed. Apparatus and methods for maintaining the molten material throughput and ... | 04/13/2010 |
| 7637125 | Glass tube processing method, apparatus and glass tube In a glass processing method according to the invention, in the case of performing chemical vapor deposition or diameter shrinkage of a substrate glass tube G by relatively moving a heating furnace 20 comprising a heating element 21 for annularly enclo... | 12/29/2009 |
| 7628040 | Method for joining an optical fiber and an optical lens In the jointing method of jointing an optical fiber F a softening point of which is higher than an optical lens L to the optical lens L, only the optical lens is softened by heating, and an end face as a joint portion of the optical fiber is pushed into a joint port... | 12/08/2009 |
| 7565820 | Methods and apparatus for forming heat treated optical fiber A method for forming an optical fiber includes drawing the optical fiber from a glass supply and treating the fiber by maintaining the optical fiber within a treatment temperature range for a treatment time. Preferably also, the fiber is cooled at a specified coolin... | 07/28/2009 |
| 7352949 | Fiber used in wideband amplified spontaneous emission light source and the method of making the same The present invention relates to a fiber having a core of crystal fiber doped with chromium and a glass cladding. The fiber has a gain bandwidth of more than 300 nm including 1.3 mm to 1.6 mm in optical communication, and can be used as light source, optical amplifi... | 04/01/2008 |
| 7312170 | Optical synthetic quartz glass and method for producing the same The present invention provides an optical synthetic quartz glass material which substantially does not cause changes in transmitted wave surface (TWS) by solarization, compaction (TWS delayed), rarefaction (TWS progressed) and photorefractive effect when ArF excimer... | 12/25/2007 |
| 7302814 | Apparatus for preventing deflection of substrate tube An apparatus for producing an optical fiber preform to perform the deposition process by modified chemical vapor deposition. The Apparatus comprises a main heat source location sensor (800) for detecting the location of a main heat source for heating a substr... | 12/04/2007 |
| 7269974 | Bushing temperature controller A bushing temperature controller includes a transformer 3 which supplies a main current I1 to the bushing 2 for accommodating molten glass, and regulation current supply units 7 and 8 which are adapted to supply regulation currents... | 09/18/2007 |
| 7214363 | Method for preparing composite microparticles Composite microparticles having thin coating layers can be simply prepared by bringing a host particle precursor into contact with a flame generated in a burner movably mounted at the bottom of a coating apparatus, by introducing the precursor in the form of a vapor... | 05/08/2007 |
| 7210314 | Fiberizer thermocouple support frame An apparatus for positioning a sensor proximate to a fiberizer includes a support means for supporting a sensor, adjustment means for adjusting a position of the sensor, and attachment means for attaching the apparatus to a fiberizer. The adjustment means is coupled... | 05/01/2007 |
| 7197899 | Multi heating zone apparatus and process for making core/clad glass fibers A process includes the steps of disposing a solid core glass rod at a point removed from hot temperature that can cause crystallization in the core glass rod, disposing a solid clad glass rod at a point removed from the core glass rod; softening to the flowing condi... | 04/03/2007 |
| 7180656 | Compact optical amplifier The optical amplifier has a waveguide including a core and a cladding. The cladding at least partially surrounds the core and is doped with at least one species of rare earth ion in the range of 5 to 75 wt %. In another embodiment, the core is doped with Er3+ | 02/20/2007 |
| 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 |
| 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 |
| 7130513 | Glass-body-producing method and optical glass body and optical fiber A method produces a glass body that contains a reduced amount of OH groups in the metallic-oxide-containing glass layer and that has a reduced amount of transmission loss due to OH groups when the glass body is transformed into an optical fiber. The production metho... | 10/31/2006 |
| 7125912 | Doped sol-gel materials and method of manufacture utilizing reduced mixing temperatures A method of preparing a solution for forming a doped gel monolith includes providing a first substance including a metal alkoxide. The method further includes providing a second substance including a catalyst. The method further includes providing a chemical includi... | 10/24/2006 |
| 7121120 | Method of glazing an optical fiber preform with a plasma of reduced power A method of fabricating an optical fiber preform includes an operation of glazing the outside surface of the preform using inductive heating, of the plasma torch type, for localized heating of the preform. A flow of gas between the plasma and the preform in the area... | 10/17/2006 |
| 7100400 | Manufacture of silica bodies using sol-gel techniques The use of large dense vitreous spherical (LDVS) silica powders for making sol-gel silica bodies has been found to have important advantages. Among these are higher gel strength, higher silica loading, more rapid aging and drying of the gel, a reduction in the amoun... | 09/05/2006 |
| 7079738 | Method for manufacturing a glass doped with a rare earth element and fiber for optical amplification using the same An optical fiber for optical amplification, characterized in that a full width at half maximum of gain spectrum is 45 nm or more; and a maximum value of power conversion efficiency is 80% or more. A method for producing a rare earth element-doped glass for use in ma... | 07/18/2006 |
| 7062139 | Core of an optical patch cord and an optical signal transmission system using the same and a method for preparing the same The present invention discloses a core of an optical patch cord comprising a first end with a refraction index varying in a continuous manner along the radial direction, a second end including a blocking region at a radial center thereof, and a graded region extendi... | 06/13/2006 |
| 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 |
| 7045737 | Glass-processing method and glass-processing apparatus for the method A glass-processing method adjusts the range of the heating region according to the work piece and processing condition, and a glass-processing apparatus implements the method. The method incorporates the heating of a glass body with a thermal plasma torch comprising... | 05/16/2006 |
| 7043133 | Silicon-oxycarbide high index contrast, low-loss optical waveguides and integrated thermo-optic devices Silicon-oxycarbide optical waveguides and thermooptic devices include a substrate and a first cladding layer having a first refractive index positioned over a substrate. A first core layer comprising silicon, oxygen, and carbon and having a core refractive index is ... | 05/09/2006 |
| 7026362 | Sol-gel process utilizing reduced mixing temperatures A method of forming a gel monolith includes preparing a first solution comprising metal alkoxide and preparing a second solution comprising a catalyst. A third solution is prepared by mixing the first solution and the second solution together. At least one of the fi... | 04/11/2006 |
| 7003985 | Method and apparatus for removing polymeric coatings from optical fiber in a non-oxidizing environment In accordance with the invention, the polymeric coating is removed from a coated optical fiber by disposing the fiber within a non-oxidizing environment and applying sufficient heat to volatilize at least a portion of the polymeric coating. The result is that the co... | 02/28/2006 |
| 7003984 | Hybrid manufacturing process for optical fibers A hybrid method of and apparatus for producing a structure capable of being drawn into an optical fiber. The method includes the steps of conducting vapor-phase reactants into an interior region of a glass tube, conducting aerosol form reactants into the interior of... | 02/28/2006 |
| 6998102 | Rapid process for producing transparent, monolithic porous glass A process for making transparent porous glass monoliths from gels. The glass is produced much faster and in much larger sizes than present technology for making porous glass. The process reduces the cost of making large porous glass monoliths because: 1) the process... | 02/14/2006 |
| 6988381 | Method of elongating glass preform The present invention provides a method of elongating a glass preform having holes extending in the longitudinal direction while suppressing excess shrinkage of the holes. In the method of elongating a glass preform of the present invention, both ends of the glass p... | 01/24/2006 |
| 6978077 | Plastic optical fiber and method for producing the same A plastic optical fiber and a method for producing the same is disclosed. The plastic optical fiber is formed as a fiber of core-cladding structure. A protective layer or shield layer may be provided on the outer surface of the optical fiber of core-cladding structu... | 12/20/2005 |
| 6970494 | Rare-earth doped phosphate-glass lasers and associated methods Apparatus and method for integrating lasers and optics on glass substrates. An optical (e.g., laser) component formed from a glass substrate doped with a optically active lanthanides species with a plurality of waveguides defined by channels within the substrate. Th... | 11/29/2005 |
| 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 |
| 6955774 | Plastic optical fiber and method for producing the same A plastic optical fiber and a method for producing the same is disclosed. The plastic optical fiber is formed as a fiber of core-cladding structure. A protective layer or shield layer may be provided on the outer surface of the optical fiber of core-cladding structu... | 10/18/2005 |
| 6950585 | Hollow core photonic bandgap optical fiber A photonic crystal optical fiber made up of an array of conventional hollow core optical fibers is disclosed. The array of optical fibers omits at least one fiber to form a central hollow core. The fiber works on the principle of two-dimensional photonic crystals to... | 09/27/2005 |
| 6945079 | Optical fiber drawing system for non-contact control of polarization mode dispersion of optical fiber Disclosed is a system for drawing an optical fiber for controlling polarization mode dispersion. A furnace is provided for uniformly heating an optical fiber preform in the drawing system mounted to an optical fiber draw tower. The furnace comprises: (a) a main body... | 09/20/2005 |
| 6928840 | Optical fiber producing method A drawing apparatus 1 comprises a drawing furnace 11, a protecting tube 21, and a resin curing unit 31. A buffer chamber 41 is disposed between the drawing furnace 11 and the protecting tube 21, and has a length L1... | 08/16/2005 |
| 6931215 | Optical transmitter module A smaller and higher performance optical transmitter module is provided, which can improve the reliability and which can be manufactured at lower costs and allow for stable laser transmission of an optical semiconductor element. The optical transmitter module which ... | 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 |
