Did You Know...
...that the inventor of the electric motor was a blacksmith named Thomas Davenport? Described as "a brilliantly unsuccessful inventor", Davenport invented the first rotary electric motor. In 1836 he headed out -- on foot -- from his Vermont home to file a patent application at the Patent Office in Washington, D.C. By the time he got there, he had squandered away his money and couldn't afford the $30 filing fee so he turned around and went home. When he later mailed in his application with money he'd raised, the Patent office was destroyed in a fire. He did finally get credit for his invention on Feb. 5, 1837.
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| Number | Title | Issue Date |
| 8175437 | Microstructured transmission optical fiber Microstructured optical fiber for single-moded transmission of optical signals, the optical fiber including a core region and a cladding region, the cladding region including an annular void-containing region that contains non-periodically disposed voids. The optica... | 05/08/2012 |
| 8173038 | Methods and systems for forming microstructures in glass substrates A method for forming microstructure cavities in a glass substrate includes directing a first laser pulse onto the glass substrate thereby forming a first microstructure cavity having a tapered configuration. The first laser pulse may have first spot area on the surf... | 05/08/2012 |
| 8093322 | Non-reactive additives for fiber coatings The present invention relates to a curable composition having an oligomer, at least one monomer, and an amount of a substantially non-reactive oligomeric additive. The substantially non-reactive oligomeric additive is present in an amount effective to yield a cured ... | 01/10/2012 |
| 8020410 | Methods for making optical fiber preforms and microstructured optical fibers A method of making an optical fiber preform includes depositing silica glass on the inside of a tube substrate via a plasma chemical vapor deposition (PCVD) operation. The parameters of the PCVD operation are controlled such that the silica glass deposited on the in... | 09/20/2011 |
| 8013985 | Methods of measuring the refractive index profile of a transparent cylindrical object Methods of measuring the refractive index profile of a transparent cylindrical object, such as a fiber preform, are disclosed. The methods include transmitting light rays through the cylindrical object in a direction transverse to the central axis at different heigh... | 09/06/2011 |
| 8000576 | Double-clad optical fibers and devices with double-clad optical fibers A double-clad optical fiber includes a core, an inner cladding and an outer cladding of silica-based glass. The core may have a radius of less than about 5 μm, a first index of refraction n1 and does not contain any active rare-earth dopants. The inner c... | 08/16/2011 |
| 7937971 | Methods for drawing optical fibers using a fluid bearing Methods for producing optical fibers along nonlinear paths include incorporating fluid bearings. An optical fiber is drawn from a preform along a first pathway, contacted with a region of fluid cushion of a fluid bearing, and redirected along a second pathway as the... | 05/10/2011 |
| 7930904 | Method of making an optical fiber having voids Microstructured optical fiber and method of making. Glass soot is deposited and then consolidated under conditions which are effective to trap a portion of the consolidation gases in the glass to thereby produce a non-periodic array of voids which may then be used t... | 04/26/2011 |
| 7926304 | Methods for measuring the tension of optical fibers during manufacture A non-contact method for measuring the tension applied to a drawn optical fiber includes drawing an optical fiber and displacing the optical fiber by applying a pressurized fluid to the optical fiber. The pressurized fluid may be applied to the optical fiber using a... | 04/19/2011 |
| 7923483 | Optical fiber ribbon with improved stripability An optical fiber ribbon includes a plurality of optical fibers encapsulated within a matrix material, where the optical fiber coating(s) and the matrix material(s), and optionally any ink layers thereon, are characterized by compatible chemical and/or physical prope... | 04/12/2011 |
| 7921675 | Methods for making optical fiber preforms and microstructured optical fibers A method of making an optical fiber preform includes depositing silica glass soot on the inside of a substrate tube via a chemical vapor deposition operation. The silica glass soot is consolidated into silica glass under controlled conditions such that the consolida... | 04/12/2011 |
| 7903917 | Low bend loss single mode optical fiber Optical waveguide fiber that is bend resistant and single mode at 1260 nm and at higher wavelengths. The optical fiber includes a core of radius R1 and cladding, the cladding having an annular inner region of radius R2, an annular ring region, ... | 03/08/2011 |
| 7844155 | Optical fiber containing alkali metal oxide Disclosed is an optical fiber having a silica-based core comprising an alkali metal oxide a silica-based core, said core comprising an alkali metal oxide selected from the group consisting of K2O, Na2O, Li2O, Rb2O, Cs... | 11/30/2010 |
| 7844154 | Optical fiber for optical power transmission An optical fiber adapted to carry optical power for powering an electrical device and also optionally adapted to carry optical data for signal processing. The optical fiber capable of carrying both optical data and optical power includes a central data waveguide reg... | 11/30/2010 |
| 7832675 | Method and apparatus for tensile testing and rethreading optical fiber during fiber draw A method and apparatus for automatic threading and winding of optical fiber onto various components in a fiber draw system, as well as methods and apparatus for conducting online tensile screening of optical fiber at high speeds. In a preferred embodiment, the fiber... | 11/16/2010 |
| 7793521 | Method enabling dual pressure control within fiber preform during fiber fabrication A method of fabricating a photonic crystal or photonic band gap optical fiber comprises providing a preform that includes a plurality of holes in an outer diameter, wherein the holes extend from a first end of a preform to a second end of the preform, and forming at... | 09/14/2010 |
| 7787731 | Bend resistant multimode optical fiber Bend resistant multimode optical fibers are disclosed herein. Multimode optical fibers disclosed herein comprise a core region and a cladding region surrounding and directly adjacent to the core region, the cladding region comprising a depressed-index annular portio... | 08/31/2010 |
| 7773848 | Low bend loss single mode optical fiber Optical waveguide fiber that is bend resistant and single mode at 1260 nm and at higher wavelengths. The optical fiber includes a core of radius R1 and cladding, the cladding having an annular inner region of radius R2, an annular ring region, ... | 08/10/2010 |
| 7773846 | Large effective area high SBS threshold optical fiber Microstructured optical fiber for transmitting optical signals comprised of light, the optical fiber including a core region and a cladding region surrounding the core region, the cladding region including at least one annular region having an index of refraction lo... | 08/10/2010 |
| 7771156 | Method and apparatus for reactor monolith loading A method for delivering a plurality of reactor monoliths into an interior of a reactor includes providing at least one tubular member having an outer wall defining an interior space adapted to allow sliding movement of reactor monolith therethrough, and providing a ... | 08/10/2010 |
| 7715675 | Optical fiber coating system and coated optical fiber The present invention relates to optical fiber coating systems capable of providing a high degree of microbend protection to an optical fiber, and an optical fiber coated therewith. According to one embodiment of the invention, an optical fiber coating system includ... | 05/11/2010 |
| 7689083 | High SBS threshold optical fiber An optical fiber having at least a first central core segment, said central core segment comprising at least a first region having a width no more than 0.2 μm over a core delta % of 0.1 or greater. The first core region may also over a delta height of at least 0.15... | 03/30/2010 |
| 7680381 | Bend insensitive optical fibers An optical fiber includes a core, an inner cladding and a low index ring of silica-based glass. The core comprises silica-based glass, an index of refraction n1, and a relative refractive index percent Δ1% relative to pure silica glass. The in... | 03/16/2010 |
| 7676130 | Optical fiber coating compositions The invention includes a composition for an optical fiber coating. An inventive composition includes a non-thiol functional adhesion promoter and less than about 0.5 pph of a strength additive containing a thiol functional group. The invention further includes an op... | 03/09/2010 |
| 7672557 | Optical fiber and a method for fabricating a low polarization-mode dispersion and low attenuation optical fiber A method of fabricating an optical waveguide fiber that includes the steps of providing a cylindrical glass optical fiber preform having a longitudinally extending centerline hole, and closing the hole under conditions suitable to result in uniform and symmetric hol... | 03/02/2010 |
| 7620282 | Low bend loss single mode optical fiber Optical waveguide fiber that is bend resistant and single mode at 1260 nm and at higher wavelengths. The optical fiber includes a core of radius R1 and cladding, the cladding having an annular inner region of radius R2, an annular ring region, ... | 11/17/2009 |
| 7590324 | Double-clad optical fibers and devices with double-clad optical fibers A double-clad optical fiber includes a core, an inner cladding and an outer cladding of silica-based glass. The core may have a radius of less than about 5 μm, a first index of refraction n1 and does not contain any active rare-earth dopants. The inner c... | 09/15/2009 |
| 7539381 | Low bend loss coated optical fiber An optical fiber includes a core and a cladding, said cladding having a refractive index nc a first coating directly contacting the cladding of said fiber, said coating having a thickness of less than 10 microns, said coating having a refractive index del... | 05/26/2009 |
| 7536076 | Optical fiber containing alkali metal oxide Disclosed is an optical fiber having a silica-based core comprising an alkali metal oxide selected from the group consisting of K2O, Na2O, LiO2, Rb2O, Cs2O and mixtures thereof in an average concentration in sai... | 05/19/2009 |
| 7526169 | Low bend loss quasi-single-mode optical fiber and optical fiber line Quasi-single mode optical waveguide fibers are disclosed that are bend resistant and capable of providing single mode transmission, for example at wavelengths greater than 1260 nm when the fundamental mode of optical energy is launched into the core of the fiber. Op... | 04/28/2009 |
| 7505660 | Microstructured transmission optical fiber Microstructured optical fiber for single-moded transmission of optical signals, the optical fiber including a core region and a cladding region, the cladding region including an annular hole-containing region that contains non-periodically disposed holes. The optica... | 03/17/2009 |
| 7480317 | Thermal compensation in semiconductor lasers The present invention relates to relates generally to semiconductor lasers and, more particularly, to schemes for measuring and controlling the temperature of semiconductor lasers and schemes for wavelength stabilization of semiconductor lasers. According to one emb... | 01/20/2009 |
| 7458850 | Right-angled coaxial cable connector A right-angled coaxial cable connector for coupling an end of a coaxial cable to a terminal is disclosed, the right-angled connector includes fewer components and better impedance characteristics. The right-angled coaxial cable connector includes a main body into wh... | 12/02/2008 |
| 7450807 | Low bend loss optical fiber with deep depressed ring Optical waveguide fiber that is bend resistant and single moded at 1260 nm and at higher wavelengths. The optical fiber includes a core and cladding, the cladding having an annular inner region, an annular ring region, and an annular outer region. The annular ring r... | 11/11/2008 |
| 7450806 | Microstructured optical fibers and methods Microstructured optical fiber and method of making. Glass soot is deposited and then consolidated under conditions which are effective to trap a portion of the consolidation gases in the glass to thereby produce a non-periodic array of voids which may then be used t... | 11/11/2008 |
| 7433566 | Low bend loss optical fiber with high modulus coating Optical fiber having a coating surrounding and in direct contact with the silica based cladding region of the fiber, the coating having a Young's modulus of elasticity greater than 30 MPa. The optical fiber has low bend losses, especially low microbend induced losse... | 10/07/2008 |
| 7423105 | Fast curing primary optical fiber coatings A curable composition for coating an optical fiber that includes an aliphatic-aromatic oxyglycidyl(meth)acrylate monomeric component, an aliphatic-(hetero)cyclic oxyglycidyl(meth)acrylate monomeric component, or a combination thereof, and an ethylenically unsaturate... | 09/09/2008 |
| 7339721 | Optical fiber light source based on third-harmonic generation An optical-fiber-based light source that generates light via third-harmonic (TH) generation is disclosed. The light source includes a pump light source that provides pump light having a fundamental mode of wavelength λP. The light source also includes an... | 03/04/2008 |
| 7336877 | Broadband optical fiber An optical waveguide fiber having a multi-segmented core surrounded by a cladding, the core having a central segment and an annular segment surrounding the central segment. The central segment has a positive relative refractive index profile, and the annular segment... | 02/26/2008 |
| 7317855 | Method of imparting twist to optical fiber A method for producing low-PMD fiber, in which a glass fiber is drawn from an optical fiber perform by a tractor which pulls such optical fiber from said perform; subsequent to said tractor pulling the fiber is twisted about its axis to increase the magnitude of twi... | 01/08/2008 |
