Optical Fiber, Rod, Filament, Or Waveguide Patents (Class 427/163.2)
  • 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
    Applicant: INDIAN INSTITUTE OF TECHNOLOGY BOMBAY
    Inventors: V.V.R. SAI, Soumyo Mukherji, Tapanendu Kundu
  • Publication number: 20110206838
    Abstract: An optical waveguide for a touch panel which eliminates the need for alignment between the optical waveguide and a lens and which achieves the appropriate emission and reception of light beams, to provide a touch panel using the optical waveguide, and to provide a manufacturing method of the optical waveguide for a touch panel. A total distance (L) which is the sum of a distance from the center of curvature of the first lens portion 30 to the light reflecting surface 60 and a distance from the light reflecting surface 60 to the tip of the second lens portion 50, and the radius (R) of curvature of the second lens portion 50 satisfy the following condition (A): (L/3)?0.5<R<(L/3)+0.5??(A) where L in mm, and R in mm.
    Type: Application
    Filed: April 29, 2011
    Publication date: August 25, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Noriyuki JUNI, Yusuke SHIMIZU
  • Publication number: 20110206323
    Abstract: Systems, devices, and techniques are disclosed relating to dispersion devices that include a slot waveguide coupled with another waveguide such as a strip waveguide. For example, one or more structural parameters can be obtained for a dispersion device, including a slot waveguide coupled to a strip waveguide, to cause the dispersion device to produce dispersion, having a dispersion profile, for an electromagnetic wave propagated through the dispersion device, the one or more structural parameters including one or more of a slot thickness for a slot of the slot waveguide or a spacing thickness between the slot waveguide and the other waveguide; and making the dispersion device, including the slot waveguide and the other waveguide, according to the structural parameters.
    Type: Application
    Filed: February 4, 2011
    Publication date: August 25, 2011
    Applicant: University of Southern California
    Inventors: Lin Zhang, Yang Yue, Alan E. Willner
  • Publication number: 20110200285
    Abstract: The invention relates to a waveguide, comprising a grating in at least a part of the waveguide, which waveguide comprises a coating, the coating comprising a polymer, which polymer comprises an aliphatic chain, which aliphatic chain is provided with hydrophilic side-chains. The invention further relates to a sensor system comprising a waveguide according to any one of the preceding claims, a light source, and a photo-detector.
    Type: Application
    Filed: December 19, 2008
    Publication date: August 18, 2011
    Inventors: Arjen Boersma, Tatiana Johanna Judith Teerling, Theodorus Henricus Cornelus Panken, Lun Kai Cheng
  • Publication number: 20110195239
    Abstract: Provided is a film having a low refractive index, which can be formed under normal temperature and pressure while obtaining a lower refractive index, has excellent adhesion with a solid substrate, and does not lose geometric optical properties, such as the diffusibility or light-harvesting capability attributed to the microstructure. Also disclosed is a method for producing the same. The film having a low refractive index is obtained by causing an electrolyte polymer and microparticles to be alternately adsorbed on the surface of a solid substrate and bringing the resulting microparticle-laminated film into contact with a silicon compound solution in order to bond the solid substrate with microparticles and microparticles with microparticles.
    Type: Application
    Filed: October 13, 2009
    Publication date: August 11, 2011
    Inventors: Nobuaki Takane, Tomomi Kawamura, Masato Nishimura
  • Patent number: 7995886
    Abstract: A method for manufacturing an optical cable for communication includes at least one micromodule, said micromodule being blocked with respect to the propagation of water. The method includes the steps of providing at least one optical fiber; embedding the at least one optical fiber in a pseudoplastic filling compound having a viscosity of 3 Pa·s to 30 Pa·s, preferably 7 Pa·s to 25 Pa·s at a shear rate of 10 s?1 and at a temperature of 100° C., and a cross-over lower than 30 Hz, preferably 5 Hz to 25 Hz, at a temperature of 100° C.; and extruding a retaining element made of a thermoplastic polymeric composition around the at least one optical fiber so embedded in the filling compound to obtain a micromodule.
    Type: Grant
    Filed: September 27, 2004
    Date of Patent: August 9, 2011
    Assignee: Prysmian Cavi E Sistemi Energia S.R.L.
    Inventors: Massimo Pizzorno, Alessandro Ginocchio, Massimiliano Pavan, Davide Ceschiat
  • Publication number: 20110188822
    Abstract: Certain embodiments of the invention may include systems and methods for providing optical fiber coatings to reduce microbend losses. According to an example embodiment of the invention, a method is provided for coating an optical fiber to reduce microbend losses and polarization mode dispersion (PMD). The method includes applying a primary layer to the optical fiber, wherein the optical fiber comprises a core region surrounded by a cladding region. The method includes applying a secondary layer to the primary layer, and curing the primary and secondary layers, wherein the cured primary layer adheres to the cladding region with a minimum pullout adhesion of 6 N/cm, and the cured secondary layer has an in situ modulus of about 700 MPa to about 1200 MPa at room temperature.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 4, 2011
    Applicant: OFS FITEL, LLC
    Inventors: Kariofilis Konstadinidis, Harry Garner, Peter Haslov, Jinkee Kim, Debra Simoff, Durgesh Vaidya, Yoshihiro Arashitani
  • Publication number: 20110188808
    Abstract: An optical coupling device for coupling a light beam into a waveguide and a method of manufacturing the device. The device includes a grating portion having a plurality of essentially straight and essentially parallel scattering elements, wherein two or more of the scattering elements have different lengths. The method includes providing a grating layer on a substrate and forming a plurality of essentially straight and essentially parallel scattering elements from the grating layer, wherein two or more of the scattering elements have different lengths.
    Type: Application
    Filed: April 13, 2011
    Publication date: August 4, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Jens Hofrichter, Nikolaj Moll
  • Publication number: 20110176764
    Abstract: The present invention provides a planar waveguide. In one embodiment, the planar waveguide includes first and third layers formed above a substrate and adjacent each other. The first and third layers are formed of a first material having a first index of refraction. The planar waveguide also includes a second layer formed between the first and third layers of a second material having a second index of refraction that is larger than the first index of refraction. The planar waveguide further includes a plurality of organo-functional siloxane based resin or polymer waveguides formed in the second layer. Each organo-functional siloxane based resin or polymer waveguide has an input on one edge of the second layer and an output on one edge of the second layer so that the input and output are on different line-of-sight paths.
    Type: Application
    Filed: November 21, 2008
    Publication date: July 21, 2011
    Applicant: DOW CORNING CORPORATION
    Inventors: Joseph Beals, Nikolaos Bamiedakis, Terry Clapp, Jon Degroot, Richard Penty, Ian White, Adrian Wonfor
  • Publication number: 20110168954
    Abstract: An electromagnetic and/or chemical enhancement which greatly enhances the Raman signal response for Surface Enhanced Raman is directed to molecular probe systems. Such molecular probe systems have many properties that make them ideal as probes for Scanning Probe Microscopy, Atomic Force Microscopy, and many other applications.
    Type: Application
    Filed: December 2, 2010
    Publication date: July 14, 2011
    Applicant: Carbon Design Innovations, Inc.
    Inventor: Ramsey M. Stevens
  • Patent number: 7964414
    Abstract: The present invention provides a biosensor, wherein non-specific adsorption on a surface that does not retain a physiologically active substance (reference unit) is suppressed. The biosensor of the invention includes a substrate having at least two types of surfaces on a single plane, wherein at least one of the surfaces does not retain a physiologically active substance, and wherein at least two types of hydrophilic compounds with different molecular weights are bound to the surface that does not retain a physiologically active substance.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: June 21, 2011
    Assignee: Fujifilm Corporation
    Inventors: Toshihide Ezoe, Taisei Nishimi, Yukou Saito
  • Publication number: 20110142392
    Abstract: Systems and methods according to these exemplary embodiments provide for on-chip optical waveguides, methods of making on-chip optical waveguides, and devices including such on-chip optical waveguides. A dielectric layer formed from, e.g., transparent spacer dielectric material, forms a waveguide core and can be surrounded or substantially surrounded by a metal cladding layer. The metal cladding layer can be formed in the chip using backend metallization techniques, e.g., Damascene processing.
    Type: Application
    Filed: December 16, 2009
    Publication date: June 16, 2011
    Applicant: ERICSSON
    Inventor: Lars Tilly
  • Publication number: 20110135816
    Abstract: Methods for manufacturing cables and cables assemblies include providing particulate matter within a tube extruded about optical fiber. The particles may be accelerated so that as they strike the tube they mechanically attach to the tube.
    Type: Application
    Filed: February 3, 2011
    Publication date: June 9, 2011
    Inventors: Rodney M. Burns, Andrey V. Fillippov, Riley S. Freeland, Daniel W. Hawtof, Warren W. McAlpine, Catharina L. Tedder
  • Publication number: 20110123152
    Abstract: An optical splitter device and method are provided. The device can include a waveguide having walls forming a large hollow core. The waveguide can be configured to direct an optical signal through the large hollow core. An optical tap can be formed through at least one wall of the waveguide. In addition, a prism can be located in the large hollow core of the waveguide and aligned with the optical tap. A splitter coating can be provided on the prism to direct a portion of the optical signal outside of the waveguide through the optical tap.
    Type: Application
    Filed: May 9, 2008
    Publication date: May 26, 2011
    Inventors: Robert Newton Bicknell, Jong-Souk Yeo, Lenward T. Seals
  • Publication number: 20110116160
    Abstract: The present invention embraces an amplifying optical fiber having a central core adapted to convey and amplify an optical signal and a cladding that surrounds the central core to confine the optical signal conveyed in the central core. The central core is formed of a core matrix in which nanoparticles are present. The nanoparticles themselves include a nanoparticle matrix and rare-earth-dopant elements. The core matrix may also include one or more additional dopants (i.e., in addition to nanoparticles). The amplifying optical fiber possesses a small numerical aperture and is suitable for use in high-pump-power applications without a degraded gain shape.
    Type: Application
    Filed: November 11, 2010
    Publication date: May 19, 2011
    Applicant: DRAKA COMTEQ B.V.
    Inventors: David Boivin, Alain Pastouret, Ekaterina Burov, Cedric Gonnet
  • Publication number: 20110117637
    Abstract: The application relates to improved optical containment structures, methods of manufacture and use, and systems for employing same. The optical containment structures generally comprise zero-mode waveguide structures having non-reflective walls. The non-reflective walls allow the preparation of optical containment regions in which the optical containment dimensions can be decoupled from the solution containment dimensions. The application also relates to methods for producing islands of functionality within nanoscale apertures.
    Type: Application
    Filed: September 8, 2010
    Publication date: May 19, 2011
    Applicant: Pacific Biosciences of California, Inc.
    Inventors: Jeremy Gray, Ronald L. Cicero, Annette Grot, Natasha Popovich, Stephen Dudek
  • Publication number: 20110112769
    Abstract: A method for manufacturing an optical waveguide, in which a waveguide structure including a waveguide layer of ZnS—SiO2 is deposited on a first layer, wherein a first refractive index of the first layer is lower than the refractive index of the waveguide layer. A sensor arrangement includes a planar optical waveguide, a light source, a sensor, an application unit for applying an analyte on top of the planar waveguide and a processor connected to the sensor.
    Type: Application
    Filed: February 18, 2009
    Publication date: May 12, 2011
    Applicant: SONY DADC AUSTRIA AG
    Inventors: Hans-Peter Niederberger, Josef Schuller, Gottfried Reiter
  • Publication number: 20110110637
    Abstract: An optical fiber that has no bubbles in the ultraviolet ray curable resin filled inside the air holes to seal the end parts thereof, an end part processing method of the optical fiber, and an end part processing apparatus of the optical fiber, are provided. In an end part processing method of an optical fiber that is comprised of a core and a cladding formed around the core, the cladding having a refraction index lower than that of the core and has a plurality of air holes formed therein along the axis of the core, wherein the end part process of the optical fiber is to form sealed portions on the ends of the air holes by sealing them with ultraviolet ray curable resin, the method is characterized in that the sealed portion is formed by heating the end of the optical fiber.
    Type: Application
    Filed: November 8, 2010
    Publication date: May 12, 2011
    Applicant: HITACHI CABLE, LTD.
    Inventors: Masao TACHIKURA, Kazumasa OHSONO, Noribumi SHIINA, Kanako SUZUKI, Yoshikazu NAMEKAWA, Kyoji OSOZAWA, Toshihiko ISHIKAWA, Masaru ISHIKAWA, Motoyoshi NAKAMURA
  • Publication number: 20110097483
    Abstract: There is provided a method for producing a polarizing film having far superior water resistance to conventional polarizing films by contacting a liquid containing cationic polymers with a surface of a polarizing film.
    Type: Application
    Filed: February 4, 2009
    Publication date: April 28, 2011
    Applicant: NITTO DENKO CORPORATION
    Inventors: Toru Umemoto, Junzo Miyazaki, Shoichi Matsuda, Sadahiro Nakanishi
  • Publication number: 20110090484
    Abstract: Optical sensor unit for infra red evanescence wave spectroscopy (IR-EWS) analysis of chemical and biological substances in an analyte, comprising a waveguide with a sensor surface to be put into contact with the analyte, wherein the sensor surface is provided with an affinity enhancing layer. There is further provided a method of producing an optical sensor unit.
    Type: Application
    Filed: April 22, 2009
    Publication date: April 21, 2011
    Inventors: Lars Österlund, Per Ola Andersson, Mikael Karlsson, Fredrik Nikolajeff
  • Publication number: 20110085773
    Abstract: Provided is an optical waveguide and a method of forming the same. The optical waveguide comprises inductive thin films and a waveguide thin film. The inductive thin films are disposed to be separated from each other. The waveguide thin film fills a gap which separates the inductive thin films, and covers at least one portion of the inductive thin films. A refractive index of the waveguide thin film is greater than refractive indexes of the inductive thin films.
    Type: Application
    Filed: September 1, 2010
    Publication date: April 14, 2011
    Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Min-su KIM
  • Publication number: 20110081481
    Abstract: The present invention relates to an apparatus and method of producing coated optical fiber in which polarization mode dispersion is sufficiently reduced by providing a sufficient amount of twist thereto. An upstream twisting inhibiting roller (11), a twist non-inhibiting roller (12), a twist provider (13) and a downstream twist inhibiting roller (14) are provided in this order along the path line of a coated optical fiber (1). The twist provider (13) provides the twist to the coated optical fiber (1). The upstream twist inhibiting roller (11) and the downstream twist inhibiting roller (14) respectively inhibit a rotation of the coated optical fiber (1) around the axis of the coated optical fiber (1).
    Type: Application
    Filed: March 11, 2009
    Publication date: April 7, 2011
    Inventor: Tetsuya Hayashi
  • Patent number: 7916986
    Abstract: An erbium (Er)-doped silicon (Si) nanocrystalline embedded silicon oxide (SiOx) waveguide and associated fabrication method are presented. The method provides a bottom layer, and forms an Er-doped Si nanocrystalline embedded SiOx film waveguide overlying the bottom layer, having a minimum optical attenuation at about 1540 nanometers (nm). Then, a top layer is formed overlying the Er-doped SiOx film. The Er-doped SiOx film is formed by depositing a silicon rich silicon oxide (SRSO) film using a high density plasma chemical vapor deposition (HDPCVD) process and annealing the SRSO film. After implanting Er+ ions, the Er-doped SiOx film is annealed again. The Er-doped Si nanocrystalline SiOx film includes has a first refractive index (n) in the range of 1.46 to 2.30. The top and bottom layers have a second refractive index, less than the first refractive index.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: March 29, 2011
    Assignee: Sharp Laboratories of America, Inc.
    Inventors: Hao Zhang, Pooran Chandra Joshi, Apostolos T. Voutsas
  • Publication number: 20110059236
    Abstract: The present invention provides an optical fiber superior in yellowing resistance. An optical fiber according to the present invention has a coating made from a UV curable resin formed on the outer surface of a bare optical glass fiber, and is characterized in that the coated material includes an unreacted photoinitiator in an amount of 2.4×10?3 mole equivalent or less in 1 g of the material. The optical fiber is characterized in that the UV curable resin includes urethane acrylate, a polyisocyanate component in the urethane acrylate is an aromatic polyisocyanate, and tolylene diisocyanate is used as the aromatic polyisocyanate.
    Type: Application
    Filed: August 13, 2010
    Publication date: March 10, 2011
    Applicant: FURUKAWA ELECTRIC CO., LTD.
    Inventors: Keisuke UI, Atsuyoshi Seno, Tetsuo Sato
  • Patent number: 7899291
    Abstract: Polymer-coated transmission media having water-blocking material embedded in the outer surface of the transmission media prevents water penetration into the transmission media and reduces the overall diameter of a cable made from the transmission media by eliminating a water-blocking tape layer in the cable. The outer surface of the transmission media is a polymer whose outer surface is embedded with a water-blocking material. The water-blocking material is applied before the polymer is cured. The transmission media may be any known type of optical media, which guides a light within the optical media. In various embodiments, optical fibers, buffered optical fibers and fiber ribbons are used as the transmission media.
    Type: Grant
    Filed: April 16, 2009
    Date of Patent: March 1, 2011
    Assignee: OFS Fitel, LLC
    Inventors: Daniel Bardroff, Stefan Jost, Georg Koebler, Jason Pedder, Karl Uhl, Peter A. Weimann
  • Publication number: 20110044073
    Abstract: A light-guide apparatus comprising a light-guide plate for guiding light rays and a plurality of light extraction features is described. The light extraction features comprise a transparent material applied to the light-guide plate so as to form an uneven surface. The transparent material may comprise a textured ink applied to the surface of the light-guide plate via a printing process. The incorporation of an uneven surface provides mirco-lens like elements on the surface of the extraction feature which have a higher aspect ratio and so lend themselves to the refraction of the light out of the light-guide plate. In this way a device is produced wherein the size, height, location and surface profile of the extraction features can be carefully controlled. As a result the described light-guide apparatus provides for a highly efficient and relatively uniform light output.
    Type: Application
    Filed: May 22, 2009
    Publication date: February 24, 2011
    Inventor: James Gourlay
  • Publication number: 20110033614
    Abstract: An object is to manufacture an optical waveguide having low optical loss, by smoothing the surface of a core. To this end, a method for manufacturing an optical waveguide includes: a core-forming layer formation step of forming a core-forming layer of a photosensitive polymer on a surface of a lower cladding layer formed on a substrate; a smoothing step of smoothing the surface by lowering a surface viscosity thereof through a heat treatment of the core-forming layer; and a photocuring step of forming a core through selective exposure of the smoothed core-forming layer.
    Type: Application
    Filed: April 20, 2009
    Publication date: February 10, 2011
    Applicant: PANASONIC ELECTRIC WORKS CO., LTD.
    Inventors: Tohru Nakashiba, Shinji Hashimoto, Naoyuki Kondou
  • Publication number: 20110032727
    Abstract: A back reflector for a lightguide in a turning film backlight includes a prism film layer in direct contact with a reflective layer. The lightguide includes a light guiding region having a refractive index that is substantially spatially uniform. The reflective layer may be specular or diffuse and may include a multilayer polymeric film.
    Type: Application
    Filed: December 3, 2008
    Publication date: February 10, 2011
    Inventors: Brian A. Kinder, Gary T. Boyd, Stephen K. Eckhardt, Chun-Yi Ting, Han-Lin Tung, Linda M. Rivard, Tao Liu
  • Publication number: 20110014367
    Abstract: The present disclosure relates to an epoxy applicator including an epoxy dispenser and a thermal pump. The epoxy dispenser includes an epoxy holding cavity that is cooled by the thermal pump via a thermal conduction member. A control system can regulate a temperature of the epoxy applicator and thereby regulate a temperature of uncured epoxy in the epoxy holding cavity. The present disclosure also relates to a syringe chiller for chilling a syringe. The syringe chiller includes a thermal conduction block adapted to thermally couple to and hold an exterior of the syringe. The syringe chiller also includes a Peltier effect device with a hot side and a cold side. The cold side of the Peltier effect device is thermally coupled to the thermal conduction block. The syringe chiller can include a control system to regulate a temperature of the syringe.
    Type: Application
    Filed: July 15, 2010
    Publication date: January 20, 2011
    Inventor: Dennis Ray Wells
  • Publication number: 20110002578
    Abstract: Provided is an optical device that includes a ring-shaped optical waveguide and an input/output optical waveguide, and that changes a resonant wavelength of the ring-shaped optical waveguide, in which the ring-shaped optical waveguide includes in part a refractive index control section for controlling a refractive index at a guided wavelength, and the refractive index control section is formed of an optical material having a thermo-optic effect with its sign different from that of an optical material that forms a section of the ring-shaped optical waveguide other than the refractive index control section.
    Type: Application
    Filed: March 3, 2009
    Publication date: January 6, 2011
    Applicants: NEC CORPORATION, KABUSHIKI KAISHA TOSHIBA
    Inventors: Masafumi Nakada, Takanori Shimizu, Nobuo Suzuki
  • Publication number: 20100327150
    Abstract: A spectral filter comprises a planar optical waveguide having at least one set of diffractive elements. The waveguide confines in one transverse dimension an optical signal propagating in two other dimensions therein. The waveguide supports multiple transverse modes. Each diffractive element set routes, between input and output ports, a diffracted portion of the optical signal propagating in the planar waveguide and diffracted by the diffractive elements. The diffracted portion of the optical signal reaches the output port as a superposition of multiple transverse modes. A multimode optical source may launch the optical signal into the planar waveguide, through the corresponding input optical port, as a superposition of multiple transverse modes. A multimode output waveguide may receive, through the output port, the diffracted portion of the optical signal. Multiple diffractive element sets may route corresponding diffracted portions of optical signal between one or more corresponding input and output ports.
    Type: Application
    Filed: May 24, 2010
    Publication date: December 30, 2010
    Inventors: Thomas W. Mossberg, Christoph M. Greiner, Dmitri Iazikov
  • Publication number: 20100330274
    Abstract: Planar waveguides having quantum dots and methods of manufacture of the planar waveguide are described.
    Type: Application
    Filed: September 13, 2010
    Publication date: December 30, 2010
    Inventors: Nicholas Francis Borrelli, Sabyasachi Sen
  • Publication number: 20100322550
    Abstract: An optical finger navigation device. Embodiments of the optical finger navigation device include a light guide film (LGF) including a finger interface surface, a light source in optical communication with the LGF to provide light from the light source to the finger interface surface, a sensor, and a navigation engine. At least a portion of the LGF exhibits total internal reflection (TIR). The sensor detects light from the LGF in response to contact between a finger and the finger interface surface which modifies reflection of light out of the LGF to the sensor. The light detected by the sensor is changed over at least a portion of the sensor in response to the contact between the finger and the finger interface surface. The navigation engine is configured to generate lateral movement information indicative of lateral movement of the finger relative to the sensor, in response to the detected light.
    Type: Application
    Filed: June 18, 2009
    Publication date: December 23, 2010
    Applicant: AVAGO TECHNOLOGIES ECBU IP (SINGAPORE) PTE. LTD.
    Inventor: Gary R. Trott
  • Publication number: 20100316341
    Abstract: The optical waveguide-type wavelength dispersion compensation device of the present invention has an optical waveguide as a reflection-type wavelength dispersion compensation device. The equivalent refractive index of a core changes unevenly along a light propagation direction by changing physical dimensions of the core that is embedded in a cladding.
    Type: Application
    Filed: June 21, 2010
    Publication date: December 16, 2010
    Applicant: FUJIKURA LTD
    Inventors: Ning GUAN, Kensuke OGAWA
  • Publication number: 20100316327
    Abstract: An optical device for integrated photonic applications includes a substrate, a dielectric waveguide and a surface plasmon waveguide. The dielectric waveguide includes a dielectric waveguide core disposed relative to a dielectric waveguide cladding and a common cladding. The surface plasmon waveguide includes a surface plasmon waveguide core disposed relative to the common cladding and a surface plasmon waveguide cladding. The common cladding couples the dielectric waveguide and the surface plasmon waveguide.
    Type: Application
    Filed: February 11, 2010
    Publication date: December 16, 2010
    Inventors: Juan Montoya, Mark G. Allen, Joel M. Hensley, Krishnan R. Parameswaran, Rajeev Ram
  • Publication number: 20100316809
    Abstract: A production method for an optical transmission element, wherein a cylindrical transparent resin is used as a core wire, a monomer becoming a polymer different in refractive index from the core wire after polymerized or a mixture of a monomer and a polymer is bonded to the outer periphery of the core wire and the monomer is diffused from the outer periphery of the core wire to thereby form the monomer inside the core wire at a proper concentration distribution, and then the monomer is further polymerized to the core wire to provide a distribution layer having different refractive indexes from the center toward the outer periphery, whereby it is possible to provide a graded index type optical transmission element at low costs with a simple facility.
    Type: Application
    Filed: August 23, 2010
    Publication date: December 16, 2010
    Inventors: Takeshi Furuta, Masaaki Oda, Teruhiko Sugimori
  • Publication number: 20100306888
    Abstract: An optical fiber including a surface including a non-covalent multilayer including a light-absorbing material can be used to develop fluorescence microscopy with a lateral resolution of about 5 nm and possibly lower. The non-covalent multilayer can be a highly absorptive thin film, for example a film based on J-aggregates, which can be used with conventional Near-Field Scanning Optical Microscopy.
    Type: Application
    Filed: March 19, 2008
    Publication date: December 2, 2010
    Applicant: Massachusetts Institute of Technology
    Inventors: Jonathan R. Tischler, Michael Scott Bradley, Vladimir Bulovic
  • Publication number: 20100292065
    Abstract: A process for producing an optical glass fiber from crystal-glass phase material. In one embodiment, the process includes the step of providing a molten crystal-glass phase material in a container, wherein the temperature of the molten crystal-glass phase material is at or above the melting temperature of the molten crystal-glass phase material, Tm, to allow the molten crystal-glass phase material is in liquid phase. The process further includes the step of cooling the molten crystal-glass phase material such that the temperature of the molten crystal-glass phase material, T1, is reduced to below Tm to cause the molten crystal-glass phase material to be changed from the liquid phase to a viscous melt.
    Type: Application
    Filed: May 6, 2009
    Publication date: November 18, 2010
    Applicant: Northwestern University
    Inventors: Mercouri G. Kanatzidis, In Chung
  • Publication number: 20100284660
    Abstract: A method of producing a planar substrate having waveguide channels, which method comprises: (i) providing a tube (6) of a substrate material; (ii) depositing silica layers (110) on the inside of the tube (6), the silica layers (110) being doped with a photosensitive material; (iii) drawing the tube (6) so that the cross-sectional size of the tube (109) is reduced; (iv) before or after the reducing of the cross-sectional size of the tube (6), causing the tube (6) to collapse into a flat shape by applying a low pressure to the tube, whereby the deposited silica layers together form a photosensitive silica layer (111); (v) cutting to required lengths the tube (6) which has been collapsed and reduced in cross-sectional size; and (vi) using laser writing to define waveguide channels in the cut lengths of the tube (6) and thereby to produce the planar substrate having the waveguide channels.
    Type: Application
    Filed: September 18, 2007
    Publication date: November 11, 2010
    Inventors: Faisal Rafiq Mahamd Adikan, Andrew Simon Webb, Corin Barry Edmund Gawith, Peter George Robin Smith, David Neil Payne, Jayanta Kumar Sahu
  • Publication number: 20100266243
    Abstract: An optical fiber feedthrough assembly includes a glass plug disposed in a recess of a feedthrough housing. The glass plug may define a large-diameter, cane-based, waveguide sealed within the recess in the housing and providing optical communication through the housing. Sealing occurs with respect to the housing at or around the glass plug of an optical waveguide element passing through the housing by braze sealing to the glass plug and/or embedding the glass plug in a polymer bonded with the plug to form a molded body that is sealed in the housing by, for example, compression mounting of the molded body or providing a sealing element around the molded body.
    Type: Application
    Filed: June 29, 2010
    Publication date: October 21, 2010
    Inventors: James R. Dunphy, John J. Grunbeck, Trevor MacDougall, Matthew J. Patterson
  • Publication number: 20100260455
    Abstract: The invention relates to optical guides and more precisely to guides for conveying an image without deforming the same. These guides can particularly be used in the production of ocular-vision optical systems more currently named informative spectacles. The optical guide includes an extraction section made of reflective microstructures at the surface of the guide. The microstructures define prisms having a calculated angle in order to send back the light beam at a given angle relative to the opposite surface enabling the exit thereof from the guide. Advantageously, the cut and the arrangement of said microstructures make them invisible to the eye while generating a large and comfortable image.
    Type: Application
    Filed: December 11, 2008
    Publication date: October 14, 2010
    Inventors: Benoit Pascal, Dubroca Guilhem, Sarayeddine Khaled
  • Publication number: 20100260930
    Abstract: A detachable framework used for winding optical fiber coils and a method of producing optical fiber coils with this framework. A framework with a suitable structure is designed considering comprehensively three factors, i.e., the window ratio of an optical fiber coil, the precision of an optical fiber gyro and the easy detachment of the framework from the optical fiber coil. A surface treatment with the framework is performed by coating a layer of thermosol on the surface of the framework so the optical fiber coil can be easily detached from the framework after curing. The required length of optical fiber is winded around the optical fiber coil framework, accompanying with vacuum pressure impregnating with curing adhesive after winding and optical fiber coil curing subsequently. The framework is taken off from the optical fiber coil under the heating circumstances, thereby completing production of the non-framework optical fiber coil.
    Type: Application
    Filed: February 6, 2009
    Publication date: October 14, 2010
    Applicant: Beijing Aerospace Times Optical-Electronic Technology Co., Ltd.
    Inventors: Wei Wang, Jing Li, Qingsheng Yang, Xuefeng Wang, Jinquan Tan
  • Publication number: 20100260462
    Abstract: A method for making a waveguide comprises (a) providing a waveguide structure comprising a substrate (22), a lower cladding (20) layer on the substrate, and a core layer (24) comprising silicon nitride, amorphous silicon, or amorphous silicon-germanium alloy on the lower cladding layer; (b) patterning the core layer; and (c) annealing (28) the waveguide structure.
    Type: Application
    Filed: November 21, 2008
    Publication date: October 14, 2010
    Inventors: Jun-Ying Zhang, Terry L. Smith, Barry J. Koch, Yasha Yi
  • Publication number: 20100239209
    Abstract: A fiber-optic coupler packaging including an internal encapsulation for encapsulating a fiber-optic coupler, the refraction index of the internal encapsulation is smaller than the refraction index of the fiber-optic coupler, and an external encapsulation, for encapsulating the internal encapsulation, the refraction index of the external encapsulation is greater than the refraction index of the internal encapsulation, the internal encapsulation and the external encapsulation are substantially transparent to the range of wavelengths of the light traveling inside the fiber-optic coupler.
    Type: Application
    Filed: March 17, 2010
    Publication date: September 23, 2010
    Applicant: V-GEN LTD.
    Inventor: Eran INBAR
  • Patent number: 7783151
    Abstract: A method for fabricating a distributed Bragg reflector waveguide is disclosed, which includes forming a first distributed Bragg reflector on a substrate; forming a sacrificial pattern on the first distributed Bragg reflector; forming a second distributed Bragg reflector on the sacrificial pattern and the first distributed Bragg reflector; and removing the sacrificial pattern. A distributed Bragg reflector waveguide is also disclosed.
    Type: Grant
    Filed: February 23, 2009
    Date of Patent: August 24, 2010
    Assignee: National Central University
    Inventors: Chii-Chang Chen, Hua-Kung Chiu
  • Publication number: 20100200757
    Abstract: Transparent optical ceramic coating materials have been fabricated from europium-doped lutetium oxide (Lu2O3:Eu) using physical vapor deposition and chemical vapor deposition techniques. The non-pixilated film coatings have columnar microcrystalline structure and excellent properties for use as radiological scintillators, namely very high density, high effective atomic number, and light output and emission wavelength suitable for use with silicon-based detectors having a very high quantum efficiency. The materials can be used in a multitude of high speed and high resolution imaging applications, including x-ray imaging in medicine.
    Type: Application
    Filed: February 4, 2010
    Publication date: August 12, 2010
    Inventors: Vinod K. Sarin, Stephen Gibson Topping
  • Publication number: 20100196595
    Abstract: An apparatus for coloring optical fibers, includes: a first reservoir for containing a natural coating material to be applied onto an optical fiber being drawn; a second reservoir for containing a colorant to be mixed with the natural coating material; a mixer in fluid communication with the first and second reservoirs to receive a first flow of natural coating material and a second flow of colorant and to mix the first and second flows to obtain a colored coating material; a coating die in fluid communication with the mixer to receive the flow of colored coating material and to apply it onto the optical fiber being drawn.
    Type: Application
    Filed: August 1, 2007
    Publication date: August 5, 2010
    Inventors: Silvio Frigerio, Lidia Terruzzi, Giovanni Villani, Corrado Castoldi
  • Publication number: 20100195194
    Abstract: A large-mode-area (LMA) optical fiber (10) that operates as a single-mode optical fiber. The optical fiber includes a core region (20) surrounded by an inner cladding (32), which in turn is surrounded by an outer cladding (40). The inner cladding includes at least one up-doped ring region (32R1). The ring region is configured to form a large attenuation differential between the higher-order modes and the fundamental mode so only that the fundamental mode remains traveling in the optical fiber. If necessary, the optical fiber can include a bend (10B) having a select “resonant” bend diameter (DB) that increases the relative attenuation of the fundamental and higher-order modes. The optical fiber supports an effective mode field diameter (MFD) of up to 40 ?m to 50 ?m. As a result, detrimental non-linear effects are suppressed, which allows the optical fiber to carry substantially more optical power than conventional LMA optical fibers.
    Type: Application
    Filed: July 16, 2008
    Publication date: August 5, 2010
    Inventors: Xin Chen, Joohyun Koh, Ming-Jun Li, Anping Liu
  • Publication number: 20100196588
    Abstract: A method of manufacturing a multi-layer structure is provided. The method may include forming a waveguide on a substrate; forming a light coupling arrangement in the waveguide, wherein the light coupling arrangement is substantially non-wavelength selective; forming at least one light source above the waveguide; and forming at least one photo detector above the waveguide. The at least one light source, the at least one photo detector and the waveguide comprise organic material. The waveguide, the light coupling arrangement, the at least one light source and the at least one photo detector are monolithically integrated.
    Type: Application
    Filed: February 3, 2009
    Publication date: August 5, 2010
    Applicant: NITTO DENKO CORPORATION
    Inventors: Ieng Kin Lao, Visit Thaveeprungsriporn
  • Patent number: 7769264
    Abstract: An optical waveguide includes: a core portion through which light propagates; a cladding portion enclosing the core portion along a direction of light propagation, and a colored resin for position recognition marking, the optical waveguide having substantially planar outer surfaces including principal surfaces thereof, and the colored resin being embedded in the optical waveguide at a position that does not substantially overlap the core portion when viewed from a direction perpendicular to a principal surface of the optical waveguide and does not substantially contact the core portion.
    Type: Grant
    Filed: February 2, 2009
    Date of Patent: August 3, 2010
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Toshihiko Suzuki, Keishi Shimizu, Akira Fujii, Kazutoshi Yatsuda, Masahiro Igusa, Shigemi Ohtsu