Optical Fiber, Rod, Filament, Or Waveguide Patents (Class 427/163.2)
  • Publication number: 20120140329
    Abstract: A light guide body includes a first solidified colloid layer, a second solidified colloid layer and a third solidified colloid layer. The first solidified colloid layer has a number of light-scattering microstructures at an upper portion thereof. The second solidified colloid layer is formed on and coming into contact with the upper portion of the first colloid layer, and the second colloid layer covers the microstructures. The third solidified colloid layer is formed on the second colloid layer, and the third colloid layer has a plurality of light condensing prisms at an opposite side thereof to the second colloid layer. The light guide body has an integral structure with a number of optical functions. A method for making the light guide body is also provided.
    Type: Application
    Filed: February 15, 2011
    Publication date: June 7, 2012
    Inventor: SEI-PING LOUH
  • Patent number: 8192808
    Abstract: The present invention relates to an apparatus and related method for manufacturing an optical preform. The present invention embraces a novel insert tube that is strategically positioned within a quartz substrate tube during the internal vapor deposition process.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: June 5, 2012
    Assignee: Draka Comteq, B.V.
    Inventors: Marco Korsten, Marc Jansen, Eric Aloysius Kuijpers
  • Patent number: 8192807
    Abstract: 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 source flowing through a plasma gas feeder nozzle, the plasma gas feeder nozzle including: an inner tube, an outer tube, wherein the plasma gas source is injected between the inner tube and the outer tube to produce the ring plasma flame, such that at least a portion of the ring plasma flame is directed radially toward the inner surface of the tubular member; traversing the tubular member along the longitudinal axis relative to the plasma flame; depositing at least one soot layer on the interior surface of the tubular member by introducing reagent chemicals into the plasma flame; and fusing all of the soot layers into a glass material on the interior surface of the tubular member.
    Type: Grant
    Filed: August 6, 2010
    Date of Patent: June 5, 2012
    Assignee: Silica Tech, LLC
    Inventors: Mikhail I. Guskov, Mohd A. Aslami, Evgueni B. Danilov, Dau Wu
  • Publication number: 20120107495
    Abstract: An optical waveguide production method is provided which reduces a transmission loss, improves alignment mark visual detectability, and ensures excellent productivity. In the optical waveguide production method, an under-cladding layer, a core and an alignment mark are formed on a surface of a metal substrate. On the other hand, a molding die is prepared which includes a cavity and an alignment mark to be associated with the alignment mark. In turn, light emitted from the side of the molding die is utilized for positioning the metal substrate and the molding die with reference to the pair of associated alignment marks. Then, an over-cladding layer is formed over the core. The alignment mark is formed from a photo-curable composition comprising the following components (A) and (B): (A) a polymerizable composition having a (meth)acrylate group; and (B) a photoradical polymerization initiator.
    Type: Application
    Filed: September 20, 2011
    Publication date: May 3, 2012
    Inventor: Tomoyuki Hirayama
  • Publication number: 20120099825
    Abstract: A fiber-optic cable for applications subject to extreme temperatures and high crushing and bending forces incorporating a loose fluoropolymer buffer material, a aramid/fiberglass strength member, and a fluoropolymer outer jacket compromising low smoke, low toxicity, and low flammability when exposed to flame.
    Type: Application
    Filed: October 21, 2010
    Publication date: April 26, 2012
    Inventor: Mark Alexander Messer
  • Publication number: 20120099112
    Abstract: Multi-core optical fiber probe includes a multi-core optical fiber (and method of manufacturing the probe) including a plurality of cores adjacent a cladding material, and a plurality of angled reflectors disposed at a distal end of the cores. An angled reflector of the plurality of angled reflectors deflects light propagating in the core at a deflection angle that is different from an axis of light propagation in the core. Light propagating toward a distal end of the core of the multi-core probe is emitted, after reflection by the corresponding reflector, out of the multi-core optical fiber probe.
    Type: Application
    Filed: October 24, 2011
    Publication date: April 26, 2012
    Inventors: Gerard Argant Alphonse, Donald Barry Carlin
  • Publication number: 20120094020
    Abstract: A method for controlling the hydrophobicity of a surface of an article by alternately depositing solutions comprising net positively charged polymers and net negatively charged polymers onto the surface to form a polyelectrolyte film of an interpenetrating network of net positively charged polymers and net negatively charged polymers on the surface of the article.
    Type: Application
    Filed: December 6, 2011
    Publication date: April 19, 2012
    Inventor: Joseph B. Schlenoff
  • Publication number: 20120066987
    Abstract: Among other things, a communication line is attached along a target surface of a building by laying out the line from a tool. An outer surface of the line is in a temporarily tacky condition as the line is laid out along the surface. The line is in the temporarily tacky condition based at least in part on an adhesive component having been pre-applied to the outer surface of the line. The line becomes non-tacky after it has been attached.
    Type: Application
    Filed: July 19, 2011
    Publication date: March 22, 2012
    Inventors: Bernard M. Malofsky, Adam G. Malofsky, Joseph E. Bradley, William H. Mann, Robert C. Table, Victor J. Morando, James M. Sellers, Nathan E. Winters, John Depiano, Paul R. Dickinson, Daniel Hendrickson
  • Publication number: 20120070115
    Abstract: A system configured to generate an optical beam from a fiber laser is presented. The system includes a fiber gain medium having a core and a cladding, the core being configured to convert radiation from a pump beam into an output beam, the cladding having a mode propagating section and a mode stripping section bounded on a near end and a distal end by the mode propagating section, the mode stripping section of the cladding being configured to scatter excess pump radiation received from the mode propagating section in a substantially outwardly radial direction. The system also includes a rigid support member into which the fiber gain medium is placed, the rigid support member completely encompassing the mode stripping section of the cladding and joined to the fiber at the mode propagating section of the cladding.
    Type: Application
    Filed: September 21, 2010
    Publication date: March 22, 2012
    Inventors: Jason E. Langseth, Alexander E. Mandl
  • Publication number: 20120063734
    Abstract: A multimode graded-index plastic optical fiber comprises a cladding and a core. The core has a refractive index which continuously becomes higher as closer to a center of a circular cross-section of the core. The core propagates light of a first mode group, which should be propagated, of incoming light from one end face of the core and emits the light from the other end face of the core. The cladding is provided on a periphery of the core and has a cylindrical cross-section. The cladding has a refractive index which is lower than that of the core. The cladding deflects light of the first mode group at an interface with the core. The core has a first core section, a second core section and a third core section. The first core section contacts an inner circumference of the cladding. The second core section is inside the first core section, and is inside the core. The second core section is a light scattering section which scatters light of a second mode group of the incoming light outside.
    Type: Application
    Filed: September 9, 2010
    Publication date: March 15, 2012
    Inventor: Yasuhiro KOIKE
  • Publication number: 20120057834
    Abstract: An optical fiber capable of suppressing an increase of a transmission loss after exposure of the optical fiber to hydrogen or deuterium is provided. The optical fiber has a core region, an inner cladding region surrounding the core region, a trench region surrounding the inner cladding region, an outer cladding region surrounding the trench region, and a refractive index varying region arranged between the inner cladding region and the trench region, the refractive index varying region having a refractive index gradually increasing from the trench region to the inner cladding region.
    Type: Application
    Filed: September 6, 2011
    Publication date: March 8, 2012
    Inventors: Hiroshi Oyamada, Tetsuya Otosaka
  • Publication number: 20120051690
    Abstract: An optical waveguide module for a touch panel is provided which achieves the reduction in thickness, and a method of manufacturing the same. The optical waveguide module includes an optical waveguide unit for placement along the periphery of a display screen of a display of a touch panel, and a substrate unit coupled to an outer edge portion of the optical waveguide unit so as to be in orthogonal relation to the optical waveguide unit. The substrate unit includes a substrate bent toward the optical waveguide unit, and the bend of the substrate in that state has a distal end serving as a connecting portion to an electrical interconnect line. An over cladding layer includes a slot provided in a surface thereof and extending along the periphery of the display screen of the display. The electrical interconnect line is put in the slot.
    Type: Application
    Filed: August 19, 2011
    Publication date: March 1, 2012
    Inventors: Ryusuke Naito, Naoki Shibata
  • Publication number: 20120050874
    Abstract: The present invention provides an optical sheet having a plurality of light guide plate patterns, each light guide plate pattern having a micro-patterned output surface for emitting light, and a micro-patterned bottom surface opposing to the output surface. The optical sheet is made in steps comprising extruding a first resin into the nip between a pressure roller and a patterned roller to form an extruded layer at a patterned roller surface temperature T1 and a nip pressure P1, the layer having an unpatterned surface and a patterned surface, the patterned surface having a pattern transferred from the patterned roller; and printing a discrete pattern on the unpatterned surface of the extruded layer to form the optical sheet comprising the plurality of light guide plate patterns.
    Type: Application
    Filed: August 31, 2010
    Publication date: March 1, 2012
    Applicant: SKC Haas Display Films Co., Ltd.
    Inventors: Herong Lei, Michael R. Landry, Xiang-Dong Mi, Jehuda Greener, Ju-Hyun Lee
  • Publication number: 20120052213
    Abstract: A method for recoating a double clad optical fiber having a core, a first cladding layer that surrounds the core, and a coating layer that covers the first cladding layer, in which the coating layer includes a second cladding layer that surrounds the first cladding layer, the method including: a step of removing the coating layer and exposing the first cladding layer; and a step of applying a curable resin on top of the exposed first cladding layer under reduced pressure, followed by curing of the curable resin under normal pressure, thereby forming a recoat layer.
    Type: Application
    Filed: December 29, 2010
    Publication date: March 1, 2012
    Applicant: FUJIKURA LTD.
    Inventor: Yoshihiro TERADA
  • Publication number: 20120051702
    Abstract: An armored cable having a polymer covering where the bond between the armor and the covering is controlled by introducing particulate matter at the interface of the armor and covering. A filler material is applied to the exterior surfaces of the cable strength elements in order to inhibit the formation of voids in the polymer covering that would otherwise promote water migration along the cable.
    Type: Application
    Filed: August 11, 2011
    Publication date: March 1, 2012
    Inventors: Bradley J. Blazer, Jason C. Lail
  • Patent number: 8125705
    Abstract: A processing method for suppressing photodarkening in an Yb-doped optical fiber, comprising: a first step of preparing the Yb-doped optical fiber by doping a core with Yb, and irradiating at least one of a gamma ray, a X-ray, or an electron beam onto the Yb-doped optical fiber with an energy greater than a light to be transmitted through the optical fiber when a laser is being oscillated; a second step of measuring a loss spectrum of an infrared region of the optical fiber after the first step, and selecting an optical fiber with the loss in a specific wavelength falling within a predetermined range; and a third step of treating the optical fiber selected in the second step in an atmosphere containing hydrogen to obtain an Yb-doped optical fiber with suppressed photodarkening.
    Type: Grant
    Filed: May 29, 2009
    Date of Patent: February 28, 2012
    Assignee: Fujikura Ltd.
    Inventors: Kentaro Ichii, Hideyuki Hosoya
  • Publication number: 20120045578
    Abstract: A method for manufacturing a photonic crystal device provided with a plasmonic waveguide includes: preparing a membrane; applying, in a programmed manner, a focused ion beam on the membrane, in a manner such as to obtain a photonic crystal made up by a regular planar arrangement of through holes positioned according to a preset lattice and also comprising a resonant cavity. The method also provides a conic plasmonic waveguide at the resonant cavity, through chemical vapour deposition induced by a focused electron beam. The focused electron beam that induces la deposition is controlled in such a manner to gradually reduce the transverse section of the electron beam starting from the base up to the tip of the projecting structure, maintaining the position of the electron beam constant.
    Type: Application
    Filed: September 22, 2009
    Publication date: February 23, 2012
    Applicant: CALMED S.r.l.
    Inventors: Enzo Mario Di Fabrizio, Francesco De Angelis, Gobind Das, Federico Mecarini, Patrizio Candeloro, Carlo Liberale
  • Publication number: 20120039576
    Abstract: A method for fabricating an optical waveguide includes setting, on a lower cladding of an optical waveguide, a light-reflecting feature and at least one waveguide core distinct from the reflecting feature. An upper cladding is applied that embeds both the light-reflecting feature and the waveguide core.
    Type: Application
    Filed: March 31, 2010
    Publication date: February 16, 2012
    Inventors: Roger F. Dangel, Folkert Horst, Tobias P. Lamprecht, Bert J. Offrein
  • Publication number: 20120034374
    Abstract: The invention provides an extrusion material supply device suitable for use in melt extrusion molding, and a method for manufacturing an optical transmission body, in which a deterioration of an optical signal transmission loss is extremely small, and productivity intrinsic to an extrusion molding method is provided in combination. An extrusion material supply device 1 includes: a vertical hopper 2, which has a cooling unit 3 and a heat melting unit 4 continuous with a lower portion thereof, and houses a material rod R; cooling means 5 for cooling the cooling unit 3; an electric heater 6 that heats the heat melting unit 4; and gas pressurizing means 7 for sequentially supplying molten plastics M to a metal die by a gas pressure. The heat melting unit 4 is formed into a cylinder shape in which an inner diameter is larger than an inner diameter of the cooling unit 3 arranged above, and enables the molten plastics M to spread in the heat melting unit 4.
    Type: Application
    Filed: January 26, 2010
    Publication date: February 9, 2012
    Inventors: Tazuru Okamoto, Hirotsugu Yoshida, Yasuhiro Koike
  • Patent number: 8111961
    Abstract: Adverse hydrogen aging limitations in multiply-doped optical fibers are overcome by passivating these optical fibers using a deuterium passivation process. This treatment essentially pre-reacts the glass with deuterium so that the most active glass sites are no longer available to react with hydrogen in service. Optical fibers of main interest are doped with mixtures of germanium and phosphorus. Optimum passivating process conditions are described.
    Type: Grant
    Filed: February 26, 2008
    Date of Patent: February 7, 2012
    Assignee: OFS Fitel, LLC
    Inventors: David J. DiGiovanni, Michael LuValle, George E. Oulundsen, Durgesh Shivram Vaidya, Robert Lingle, Jr.
  • Publication number: 20120020080
    Abstract: A sheet switch module of the present invention includes: a light source; a light guide that guides light from the light source; a sheet switch disposed on the back side of the light guide in a thickness direction of the light guide; and a groove formed in the thickness direction of the light guide in at least one of a surface and the back of the light guide.
    Type: Application
    Filed: September 28, 2011
    Publication date: January 26, 2012
    Applicant: FUJIKURA LTD.
    Inventors: Shimpei SATO, Kenji NISHIWAKI, Tomosada INADA, Katsunori HIRATA
  • Publication number: 20120014638
    Abstract: According to one embodiment, an optical waveguide sensor chip includes an optical waveguide layer; a pair of optical elements disposed at both ends of the optical waveguide layer so that light enters the optical waveguide layer and the light exits from the optical waveguide layer; a functional film formed on a predetermined region of the optical waveguide layer; a covering layer formed in a planar region on the light entrance surface of the optical waveguide layer, in which at least the optical elements are disposed; a first through hole configured to allow the light entering the entrance-side optical element to pass therethrough; and a second through hole configured to allow the light exiting from the exit-side optical element to pass therethrough.
    Type: Application
    Filed: July 6, 2011
    Publication date: January 19, 2012
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Mika FUJII, Mie MATSUO, Tomohiro TAKASE
  • Publication number: 20120014639
    Abstract: A method and structure for coupling to a plurality of multicore optical fiber strands. A first plurality of optoelectronic devices is provided on a surface of a substrate, the first optoelectronic devices being arranged in a 2D array pattern that corresponds to a 2D array pattern corresponding to different light cores of a first multicore optical fiber. A second plurality of optoelectronic devices is provided on the surface of the substrate, the second optoelectronic devices being arranged in a 2D array pattern that corresponds to a 2D array pattern corresponding to different light cores of a second multicore optical fiber. Each optoelectronic device on the substrate surface provides one of a receive function and a transmit function for interacting with a corresponding core of a multicore optical fiber strand.
    Type: Application
    Filed: May 11, 2011
    Publication date: January 19, 2012
    Applicant: International Business Machines Corporation
    Inventors: Fuad Elias Doany, Daniel Michael Kuchta, Benjamin Giles Lee, Petar Pepeljugoski, Clint Lee Schow
  • Publication number: 20120003385
    Abstract: A mold for the formation of an over cladding layer in an optical waveguide is integrally produced from a light-transmissive resin and a light-transmissive support plate by molding using a mold member identical in shape with the over cladding layer. In the production of the mold, a hollow resulting from the removal of the mold member serves as a cavity for the formation of the over cladding layer. For the formation of the over cladding layer, the cavity of the mold is filled with a photosensitive resin for the formation of the over cladding layer, and the photosensitive resin is cured by being exposed to light through the mold while cores formed in a pattern on a surface of an under cladding layer are immersed in the photosensitive resin.
    Type: Application
    Filed: June 30, 2011
    Publication date: January 5, 2012
    Inventor: Ryusuke Naito
  • Patent number: 8090232
    Abstract: The present disclosure relates to a telecommunications cable having a layer constructed to resist post-extrusion shrinkage. The layer includes a plurality of discrete shrinkage-reduction members embedded within a base material. The shrinkage-reduction members can be made of a liquid crystal polymer. The disclosure also relates to a method for manufacturing telecommunications cables having layers adapted to resist post-extrusion shrinkage.
    Type: Grant
    Filed: January 10, 2011
    Date of Patent: January 3, 2012
    Assignee: ADC Telecommunications, Inc.
    Inventor: Wayne M. Kachmar
  • Publication number: 20110311192
    Abstract: An optical waveguide device includes a lower clad layer formed on a substrate, an optical waveguide core formed on the lower clad layer, at least one pair of banks arranged in rows along the optical waveguide core which is arranged between each pair of the banks, and an upper clad layer covering the optical waveguide core and the banks.
    Type: Application
    Filed: May 9, 2011
    Publication date: December 22, 2011
  • Publication number: 20110311180
    Abstract: An integrated optical waveguide includes a substrate, a waveguide under-cladding layer disposed on the substrate, and a waveguide core, having top and sidewall surfaces, disposed on the under-cladding layer. A glassy surface smoothing layer disposed on the waveguide core top surface and sidewall surfaces and has a refractive index, relative to a refractive index of the waveguide core, that enables guided optical transmission through the waveguide core and the glassy surface smoothing layer. In fabrication of the optical waveguide, a waveguide under-cladding layer is formed on a substrate and a waveguide core having sidewall surfaces and a top surface is formed on the under-cladding layer. A liquid suspension comprising particles of a glassy material is applied on the top and sidewall surfaces of the waveguide core. The applied liquid glassy particle suspension is heated to form a glassy surface smoothing layer on the waveguide core top surface and sidewall surfaces.
    Type: Application
    Filed: May 13, 2011
    Publication date: December 22, 2011
    Inventors: Juejun Hu, Nathan A. Carlie, Laeticia C. Petit, Anuradha M. Agarwal, Kathleen A. Richardson, Lionel C. Kimerling
  • Publication number: 20110303637
    Abstract: A near-field light generator includes: a waveguide; a clad layer having a penetrating opening and disposed on the waveguide; a plasmon generator accommodated in the opening; and a dielectric film interposed between the plasmon generator and each of the waveguide and the clad layer. In a method of manufacturing the near-field light generator, an initial clad layer is initially formed on the waveguide, and then the initial clad layer is taper-etched by RIE to form a recess that does not reach the top surface of the waveguide. Subsequently, the recess is etched by wet etching until the top surface of the waveguide is exposed in part. Next, the dielectric film is formed in the opening, and the plasmon generator is formed on the dielectric film.
    Type: Application
    Filed: June 14, 2010
    Publication date: December 15, 2011
    Inventors: Hironori ARAKI, Yoshitaka Sasaki, Hiroyuki Ito, Shigeki Tanemura, Kazuo Ishizaki, Takehiro Horinaka
  • Publication number: 20110305118
    Abstract: Disclosed is detecting changes in pressure in a medium, with an optical fiber having a core diameter at an immersion surface contact of the fiber of less than 10 ?m; a layer of material deposited on said end of the fiber, the material being of a thickness of from about 2 nm to about 10 nm. Also disclosed is detecting pressure waves in a medium comprising: contacting the medium with a fiber optic, the fiber integrated with a light source and a detector, the fiber optic having a diameter of less than 10 ?m at an immersion surface contact of the fiber; providing a thin layer of material on the immersion surface contact, wherein said thin layer of material is of a thickness in a range of from about 2 nm to about 10 nm; and detecting Fresnel back reflections from the immersion end of the fiber.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 15, 2011
    Inventors: Afshin S. Daryoush, Peter A. Lewin, Rupa Gopinath Minasamudram, Mahmoud A. El-Sherif
  • Patent number: 8075941
    Abstract: The invention relates to a method and an arrangement in a coating line, in which a fibre (2) is uncoiled from a fibre start (1) by means of a pulling device (5) to an extrusion head (3) that comprises a die part (7) and a torpedo part, by means of which on the surface of a primary coated fibre there is arranged a buffer layer which is in tight contact with the primary coated fibre, and in which method the tightly coated fibre is cooled downstream of the extrusion head (3) in a predetermined manner. First there is determined a target value for line tension by means of the correlation between a line tension and a force required for stripping a buffer layer and the line tension between the extrusion head (3) and the pulling device (5) is measured.
    Type: Grant
    Filed: September 23, 2005
    Date of Patent: December 13, 2011
    Assignee: Nextrom Oy
    Inventors: Timo Hietaranta, Jari Nykänen
  • Publication number: 20110293231
    Abstract: Optical faceplates and methods for manufacturing same are disclosed. An optical faceplate (10) includes a substrate (12) having a major surface, and an array (15) of optical fibers embossed on the substrate. The optical fibers have a length determined in accordance with a layer of material deposited on the substrate from which the optical fibers are formed, a depth of the features in a mold or stamp and a number of processing/stamping steps. A method includes forming (202) a layer on a substrate having a major surface, and processing (204) the layer to form an array of optical fibers transversely disposed to the major surface.
    Type: Application
    Filed: May 26, 2010
    Publication date: December 1, 2011
    Inventors: Ties van Bommel, Rifat Ata Mustafa Hikmet, Hans van Sprang, Marcus Antonius Verschuuren
  • Publication number: 20110286701
    Abstract: An optical connection structure which permits easy and automatic alignment between the optical axes of optical fibers and the optical axes of cores of an optical waveguide, and a production method which ensures that an optical waveguide for the optical connection structure can be efficiently produced with higher dimensional accuracy are provided. An over-cladding layer of the optical waveguide includes an extension portion provided in a longitudinal end portion thereof, and optical fiber fixing grooves are provided in the extension portion as extending along extension lines of cores coaxially with the cores and each having opposite ends, one of which is open in an end face of the extension portion and the other of which is closed. Optical fibers are fitted and fixed in the respective optical fiber fixing grooves. The over-cladding layer further includes a boundary portion (6) provided between the other closed ends of the optical fiber fixing grooves and the cores.
    Type: Application
    Filed: March 29, 2011
    Publication date: November 24, 2011
    Inventors: Kazunori Mune, Junichi Fujisawa, Yuichi Tsujita
  • Publication number: 20110286705
    Abstract: The bond between abutting layers is controlled by introducing particulate matter at the interface of the layers.
    Type: Application
    Filed: November 24, 2009
    Publication date: November 24, 2011
    Inventors: Bradley J. Blazer, Anne G. Bringuier, Michael J. Gimblet, Cory F. Guenter, Douglas S. Hedrick, Jason C. Lail, Reginald Roberts
  • Publication number: 20110286706
    Abstract: The bond between an armor and a cable covering jacket is controlled by introducing intervening material at the interface of the layers along selected bond regions. The intervening material can comprise particulate matter or a strip of material introduced at selected locations of the armor perimeter to allow ease of access at the selected regions.
    Type: Application
    Filed: December 11, 2009
    Publication date: November 24, 2011
    Inventors: Julian L. Greenwood, III, Jason C. Lail, Keith H. Lail, Reginald Roberts, Richard S. Wagman
  • Publication number: 20110286692
    Abstract: A method of manufacturing an optical waveguide device, includes obtaining an optical waveguide by forming sequentially a first cladding layer, a core layer, and a second cladding layer on a substrate, forming a groove portion including a light path conversion inclined surface and a sidewall surface which intersects with it, and the groove portion dividing the second cladding layer and the core layer, on both end sides of the optical waveguide respectively, forming selectively a metal layer on the light path conversion inclined surface and the sidewall surface of the groove portion, forming a protection insulating layer sealing the metal layer on the optical waveguide, and obtaining a light path conversion mirror that the metal layer is formed on the light path conversion inclined surface, by forming a concave portion which penetrates the core layer from the protection insulating layer to remove the metal layer formed on the sidewall surface of the groove portion.
    Type: Application
    Filed: April 27, 2011
    Publication date: November 24, 2011
    Inventor: Kenji YANAGISAWA
  • Publication number: 20110274397
    Abstract: Certain embodiments of the invention may include systems and methods for providing tight-buffered optical fiber having improved fiber access. According to an example embodiment of the invention, a method for making a tight buffer upcoated optical fiber having a predetermined buffer stripping force is provided. The method includes controlling residual acrylate unsaturation (RAU) and oxygen in at least an outer surface of un-buffered optical fiber to achieve a predetermined buffer stripping characteristic, applying a tight buffer composition comprising acrylate to the un-buffered optical fiber, and curing the tight buffer composition.
    Type: Application
    Filed: May 5, 2010
    Publication date: November 10, 2011
    Applicant: OFS Fitel, LLC
    Inventors: Peter A. Weimann, Timothy Goddard, Heng Ly
  • Publication number: 20110268385
    Abstract: An optical waveguide sensor includes a substrate and an optical waveguide. The optical waveguide includes a core and a lateral clad. The core extends in a spiral shape above a surface of the substrate. The lateral clad is disposed in a same layer as the core above the surface of the substrate and is in contact with either side surfaces of the core. At least a part of a surface of the core located opposite from the substrate is a transmission surface from which light leaks and is absorbed by a detected object.
    Type: Application
    Filed: April 14, 2011
    Publication date: November 3, 2011
    Inventors: Shuichi YAMASHITA, Yukihiro Takeuchi
  • Patent number: 8048495
    Abstract: Provided are a cholesteric liquid crystal composition which contains a compound having a high ?n value and shows an orientation in a thick layer, and a circular polarization separator sheet having a wide reflection bandwidth and capable of being produced simply and easily. A cholesteric liquid crystal composition containing a compound represented by a formula (1): R1-A1-B-A2-R2 (R1 and R2 represent alkyl, alkylene oxide, H, halogen, hydroxyl, carboxyl, (meth)acryl, epoxy, mercapto, isocyanate, amino or cyano; A1 and A2 represent 1,4-phenylene, 1,4-cyclohexylene, 1,4-cyclohexenyl, 4,4?-biphenylene, 4,4?-bicyclohexylene or 2,6-naphthylene; and B represents a single bond, —COO— or the like) and a rod-shaped liquid crystal compound having ?n of 0.18 or more and at least two or more reactive groups per one molecule.
    Type: Grant
    Filed: June 4, 2007
    Date of Patent: November 1, 2011
    Assignee: Zeon Corporation
    Inventor: Kentaro Tamura
  • Publication number: 20110262087
    Abstract: Cables have dielectric armors with armor profiles that provide additional crush and impact resistance for the optical fibers and/or fiber optic assembly therein, while retaining flexibility to aid during installation. The armored cables recover substantially from deformation caused by crush loads.
    Type: Application
    Filed: April 18, 2011
    Publication date: October 27, 2011
    Inventors: Gregory B. Bohler, Julian L. Greenwood, III, Keith A. Greer, Wesley B. Nicholson, Kimberly D. Slan
  • Patent number: 8044110
    Abstract: Optical fiber has a glass portion and at least one coating of crosslinked polymer material surrounding the glass portion, the coating being obtained by crosslinking a composition of (a) at least one radically crosslinkable oligomer containing at least two reactive functional groups and having a number average molecular weight lower than about 1,000, preferably between about 400 and about 900; (b) at least one cationically crosslinkable compound containing at least one reactive functional group; (c) at least one free radical photoinitiator; and (d) at least one cationic photoinitiator. Preferably, the coating is a secondary coating or, in the case of a ribbon of optical fibers, it is a common polymer coating known as a “common coating”.
    Type: Grant
    Filed: May 29, 2003
    Date of Patent: October 25, 2011
    Assignee: Prysmian Cavi e Sistemi Energia S.r.l.
    Inventors: Luca Castellani, Emiliano Resmini, Luigia Rossiello, Raffaella Donetti
  • Publication number: 20110250738
    Abstract: A method of forming a silicon based optical waveguide can include forming a silicon-on-insulator structure including a non-crystalline silicon portion and a single crystalline silicon portion of an active silicon layer in the structure. The non-crystalline silicon portion can be replaced with an amorphous silicon portion and maintaining the single crystalline silicon portion and the amorphous portion can be crystallized using the single crystalline silicon portion as a seed to form a laterally grown single crystalline silicon portion including the amorphous and single crystalline silicon portions.
    Type: Application
    Filed: April 8, 2011
    Publication date: October 13, 2011
    Inventors: Pil-Kyu Kang, Dae-Lok Bae, Gil-Heyun Choi, Jong-Myeong Lee
  • Publication number: 20110243518
    Abstract: A non-zero dispersion shifted fiber includes a core region, and a clad region located out of the core region. The core region is classified into a plurality of detailed regions in accordance with refractive index contrasts. Among the detailed regions, a region located at a center of the fiber has GeO2 concentration of 3.5 mol % or less.
    Type: Application
    Filed: April 1, 2011
    Publication date: October 6, 2011
    Inventors: Joong-Ho Pi, Lae-Hyuk Park, Ji-Sang Park, Soon-Il Sohn
  • Publication number: 20110243516
    Abstract: An optical waveguide device includes optical waveguide wiring in which an optical waveguide crosses, and a relay part arranged at a crossing part of the optical waveguide and having a refractive index higher than that of a core of the optical waveguide.
    Type: Application
    Filed: January 31, 2011
    Publication date: October 6, 2011
    Applicant: FUJITSU LIMITED
    Inventor: Shigenori AOKI
  • Publication number: 20110235968
    Abstract: Optical interfaces that may be employed between large-core optical fibers and chip-scale optoelectronic devices. Described herein are couplers that improve the tolerance of misalignment when a single mode (SM) fiber is used as waveguide input. This enables the possibility of passive/automatic alignment and therefore reduces the production cost. The coupler also serves as a spot-size converter that reduces the spot size and is suitable for applications where a waveguide mode with small cross-section area is of particular importance. One such example can be a waveguide-based SiGe or III-V semiconductor photodetector in which the vertical size of its waveguide mode should be as small as few microns.
    Type: Application
    Filed: March 29, 2010
    Publication date: September 29, 2011
    Inventors: YUN-CHUNG NA, TAO YIN
  • Patent number: 8027554
    Abstract: The thermo-optic phase shifter (200) according to an exemplary aspect of the invention includes: a substrate (201); a sacrificial layer (202) formed above the substrate (201); a first cladding layer (203) formed above the sacrificial layer (202) and having a film density higher than that of the sacrificial layer (202); an optical waveguide core (204) formed above the first cladding layer (203); a second cladding layer (205) provided over the first cladding layer (203) to cover the optical waveguide core (204); a heat-generating heater (206) provided to a region of the second cladding layer (205) directly above the optical waveguide core (204); and a groove (207) formed in a side face region of the optical waveguide core (204) and extending from the surface of the second cladding layer (205) to the surface of the substrate (201).
    Type: Grant
    Filed: October 10, 2007
    Date of Patent: September 27, 2011
    Assignee: NEC Corporation
    Inventor: Morio Takahashi
  • Publication number: 20110229080
    Abstract: In one aspect of the invention, roughly stated, Applicants have discovered that a compensation material within slot elongated in a direction parallel to a segment of waveguide in an arrayed waveguide grating apparatus can compensate for both first and second order change in refractive index of the base waveguide material over temperature. Unlike the transverse slots of conventional linear athermalization techniques, the elongated slot generally parallel to the base material defines a composite waveguide section having a second order effective index of refraction temperature dependency which can be utilized to accurately minimize the temperature dependence of the overall optical path length to both the first and second order. The techniques described herein are also generalizeable to neutralization of the optical path length temperature dependence to any order.
    Type: Application
    Filed: March 18, 2011
    Publication date: September 22, 2011
    Inventors: Hindrik Freerk Bulthuis, Paula Mc Dade, Gunter B. Beelen
  • Publication number: 20110217001
    Abstract: There is described an optical waveguide structure exhibiting nonlinear properties, a method of fabricating such, and an optical coupling device made of two of such optical waveguide structures. The optical waveguide structure comprises an optical waveguide portion made of a light transmitting material for supporting a light mode traveling therein. The light transmitting material has an intrinsic nonlinearity parameter suitable for inducing a nonlinearity on the light mode, and the optical waveguide portion having a diameter sized to securely confine the light mode therein and to increase the nonlinearity on the light mode. The optical waveguide structure also has a coating surrounding the optical waveguide portion to mechanically support or to protect the optical waveguide portion from surface damage.
    Type: Application
    Filed: May 25, 2010
    Publication date: September 8, 2011
    Inventors: Martin Rochette, Chams Baker
  • Publication number: 20110211787
    Abstract: A component for an optical interconnect includes a waveguide having at least one surface that is configured at an angle equal to or less than 90° relative to an axis of the waveguide. A tap is operatively connected to the waveguide. The tap has an angled surface that is adhered to the angled surface of the waveguide. An angle of the angled surface of the tap is substantially identical to the angle of the angled surface of the waveguide. An axis of the tap is positioned at an angle that is two times the angle of the angled surface of the tap. An at least partially reflective coating established on at least a portion of the angled surface of the tap.
    Type: Application
    Filed: October 31, 2008
    Publication date: September 1, 2011
    Inventors: Huei Pei Kuo, Michael Renne Ty Tan, Shih-Yuan Wang, Robert G. Walmsley, Paul Kessler Rosenberg
  • Publication number: 20110206320
    Abstract: Beam couplers and splitters are disclosed herein. An embodiment of a beam coupler and splitter includes a first waveguide including a bevel and a bend, and a second waveguide including a bevel complementarily shaped to the first waveguide bevel. The first waveguide bevel is configured to totally internally reflect at least some light incident thereon. The second waveguide is coupled to the first waveguide such that i) the second waveguide bevel is adjacent to at least a portion of the first waveguide bevel, and ii) a predetermined coupling ratio is achieved.
    Type: Application
    Filed: October 31, 2008
    Publication date: August 25, 2011
    Inventors: Huei Pei Kuo, Michael Renne Ty Tan, Shih-Yuan Wang, Robert G. Walmsley, Paul Kessier Rosenberg
  • Publication number: 20110207237
    Abstract: A biosensor having an optical fiber having at least one curved portion configured to enhance penetration of evanescent waves; and one or more nanoparticles associated with the optical fiber, and configured to enhance localized surface plasmon resonance.
    Type: Application
    Filed: February 19, 2010
    Publication date: August 25, 2011
    Inventors: V.V.R. SAI, Soumyo Mukherji, Tapanendu Kundu