Optical waveguides inventions

20090263068 - Optical guided mode spatial switches and their fabrication: Optical guided mode fast 1×2 and 2×2 spatial switches are provided that can be used in multimedia communication networks. These switches require a relative refractive index change of only 0.0001˜0.0002 and can be realized using Lithium Niobate, Polymers, semiconductors, etc. Extinction ratios of these switches are made to be better... Agent: Patent Services

20090263070 - Atr-probe: An ATR-probe including: a housing having a media opening; a radiation guiding body closing the media opening and having two planparallel surfaces, between which light can be guided by means of total reflection. A section of a first planparallel surface bordered by a sealing ring can be contacted through the... Agent: Bacon & Thomas, PLLC

20090263071 - Optical environmental sensor and method for the manufacturing of the sensor: A sensor which reacts on influences from an environment. The sensor includes a zero-order diffractive color filter. The zero-order diffractive color filter includes a high-index waveguide layer, a zero-order diffractive grating structure and a layer of an reactive material, wherein the reactive material is in contact with the environment and... Agent: Pauley Petersen & Erickson

20090263069 - Raman amplification in distributed optical fiber sensing systems: A method of providing Raman amplification in an optical fiber sensing system, comprises generating a probe pulse of light and launching the pulse into a sensing optical fiber, generating pump light at a shorter wavelength and modulating it to produce a time-varying intensity profile, and launching the pump light into... Agent: Schlumberger Reservoir Completions

20090263072 - Tilted grating sensor: The present invention relates to a sensor using a tilted fiber grating to detect physical manifestations occurring in a medium. Such physical manifestations induce measurable changes in the optical property of the tilted fiber grating. The sensor comprises a sensing surface which is to be exposed to the medium, an... Agent: White & Case LLP Patent Department

20090263076 - Charge-based memory cell for optical resonator tuning: An optical resonator configured to be tuned using a charge-based memory cell includes an optical cavity configured to transmit light and receive injected charge carriers; a charge-based memory cell in proximity to or within the optical cavity, the memory cell containing a number of trapped charges which influence the resonant... Agent: Hewlett-packard Company Intellectual Property Administration

20090263074 - Distributed feedback laser array: The present invention provides a low-cost, high-bandwidth optical laser array where subsequent streams of data are injected in a serial fashion. The invention permits the creation of multiple channels of data on a single optical substrate without the use of costly multiplexer arrays to consolidate various optical signals. Further, the... Agent: Wyatt, Tarrant & Combs, LLP

20090263077 - Flexible optical interconnection structure and method for fabricating same: A flexible optical interconnection structure has a plurality of layers including an optical waveguide made of a core and a clad. The core is disposed to include a neutral surface that is not affected by expansion or contraction by bending. Alternatively, when the neutral surface is position outside the core,... Agent: Mcginn Intellectual Property Law Group, PLLC

20090263078 - Optical device: Plural p-n junctions are formed in a waveguide such that they have junction interfaces in a normal direction to a surface of a substrate (to an extending direction of the substrate). Accordingly, a doping concentration changes in only a horizontal direction in the substrate, and it is possible to fabricate... Agent: Juan Carlos A. Marquez C/o Stites & Harbison PLLC

20090263073 - Optical waveguide film, method for manufacturing thereof, electrical and optical hybrid circuit film including the waveguide film, and electronic device including thereof: The present invention relates to an optical waveguide film that has a high optical coupling efficiency at a light input portion and an excellent flexibility at least a part of the film. Specifically, the present invention provides an optical waveguide film that has a core and a clad comprising a... Agent: Buchanan, Ingersoll & Rooney PC

20090263075 - Temperature insensitive arrayed waveguide grating multiplexer for optical property compensation and the manufacturing method thereof: Two methods are presented in order to properly compensate the changes of the optical characteristics, which are caused by the optical path length change. First, a path length compensation method in which the additional optical path length, equivalent to the dicing kerf width of the substrate, is added onto the... Agent: The Webb Law Firm, P.C.

20090263079 - Optical routers and logical gates based on the propagation of bragg solitons in non-uniform one-dimensional photonic crystals: An optical router for all-optical control over the propagation direction of optical pulses, comprising: (i) a non-uniform one-dimensional photonic crystal receiving a plurality of input optical pulses, comprising: at least one first region used to obtain Bragg solitons; at least one second region in which non-linear interaction between two sufficiently... Agent: The Law Office Of Michael E. Kondoudis

20090263080 - Stress free mounting of optical bench for wss: An optical bench in a wavelength selective switch (WSS) is mounted using a combination of fixed mounts and stress-free mounts. The WSS is packaged in an enclosure including a base, a sidewall, and a lid. The optical switching engine is attached directly to the base. The optical bench is attached... Agent: Teitelbaum & Maclean

20090263081 - Bi-directional signal interface with enhanced isolation: A bi-directional signal interface includes a carrier signal source that generates a carrier traveling wave at an output. A first traveling wave structure includes a first and a second waveguide having an input that is coupled to the output of the carrier signal source. The first and second waveguide propagate... Agent: Rauschenbach Patent Law Group, LLC

20090263082 - Optical receptacle, optical module, and method of manufacturing an optical module: Provided are an optical receptacle capable of manufacturing an optical module thereby, while suppressing a manufacturing cost, preventing a quality degradation, and suppressing a quantity of returning light by reflection. In the optical receptacle, a recess for receiving a lens and a lens support and a through-hole penetrating from a... Agent: Brundidge & Stanger, P.C. Suite 330

20090263083 - Apparatus for side fire fiber lasers: A fiber laser having at least one pair of reflectors coupled to an optical fiber, the at least one pair of reflectors defining an optical cavity between the at least one pair of reflectors and being configured to reflect light within the optical cavity. At least one light pump is... Agent: Ofs Fltel, LLC (formerly Furukawa Electric North America, Inc.)

20090263084 - Arrayed waveguide grating circuit: Two AWG circuits are integrated while preventing degradation in quality of a multiplexing/demultiplexing function. An arrayed waveguide grating circuit includes: a first slab waveguide (52) connected to a first input waveguide (51a) and second output waveguides (55b); a second slab waveguide (54) connected to first output waveguides (55a) and a... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090263085 - Device for injecting light into an optical wave guide: A device for injecting light into an optical wave guide is provided, via which a focused light beam is oriented by a manipulator. A simple and precise adjustment of maximum injection efficiency during the injection of light into optical wave guides is facilitated, by a manipulator, and the permanent fixing... Agent: Muncy, Geissler, Olds & Lowe, PLLC

20090263086 - Data transmission cable with fakra housing: The invention relates to a data transmission cable (10; 20), in particular for motor vehicles, at at least one of whose ends a plastics housing (14; 24) is arranged, said housing having mechanical dimensions in its interface region (30; 32) which conform to the FAKRA standardisation scheme. The data transmission... Agent: Law Office Of Delio & Peterson, LLC.

20090263087 - Optical receptacle: An optical receptacle which couples a connector ferrule in which an optical fiber is inserted and an optical semiconductor package. The optical receptacle comprises: a precise sleeve which holds the connector ferrule; a receptacle body including a connection portion connected to the optical semiconductor package, a cylindrical portion in which... Agent: Leydig Voit & Mayer, Ltd

20090263088 - Fusion splicer: A fusion splicer includes a fusion splicing device for butting optical fiber end parts against each other and fusing them and a reinforcement treatment device for reinforcing the optical fibers subjected to the fusion splice with a reinforcement sleeve covered thereon, and a display for monitoring the state of fusion... Agent: Mcdermott Will & Emery LLP

20090263089 - Optical fiber cable: A fiber optic cable having a jacket, at least one tube and at least two fibers within the tube in a loose tube arrangement. The fibers within the tube have a fiber length differential substantially in the range of 0.01%-0.04%.... Agent: Sofer & Haroun LLP.

20090263090 - Multiple-core optical fiber with coupling between the cores: An optical fiber includes a cladding, a first core, and a second core. At least one of the first core and the second core is hollow and is substantially surrounded by the cladding. At least a portion of the first core is generally parallel to and spaced from at least... Agent: Knobbe Martens Olson & Bear LLP

20090263091 - Optical fiber: A relative refractive index difference Δ1 between a center core region and a cladding layer is 0.30% to 0.35%, a relative refractive index difference Δ2 between an outer core layer and the cladding layer is −0.10% to −0.04%, and Δ1:Δ2 is 2.5:1 to 7.5:1. A diameter of the center core... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20090263092 - Optical fiber: An improved optical fiber achieves both reduced bending and microbending losses, as well as a much higher Brillouin threshold, as compared to standard transmission fibers. The optical fiber comprises a core including at least two dopants and having a refractive index difference Δn1 with an outer optical cladding, a first... Agent: Summa, Additon & Ashe, P.A.

20090263093 - Light guiding assembly: A light guiding mechanism (20) for illuminating a keypad assembly of a portable electronic device is provided. The light guiding mechanism (20) includes a light guiding plate (22) and a shielding plate (24). The light guiding plate (22) having a peripheral wall (226). The shielding plate (24) having a frame... Agent: PCe Industry, Inc. Att. Steven Reiss

20090263094 - Two-dimensional photonic crystal: Holes 12 are created in a slab-shaped body 11. On the first surface 131 of the body 11, the holes 12 are arranged at the lattice points of a triangular lattice 141. On the second surface 132, they are arranged at the lattice points 122 located at positions corresponding to... Agent: Oliff & Berridge, PLC

20090263095 - Method for integrating a light guide in or onto a support structure, support structure with a light guide, and device comprising such support structure: The invention relates to a method for integrating a light guide (1) in or onto a support structure (3), wherein said parts (1,3) are molded and wherein during this molding and/or a subsequent cooling down process, shrink behavior of the respective parts (1,3) is controlled in such way that both... Agent: Philips Intellectual Property & Standards

20090263096 - Fiber distribution hub with multiple configurations: A fiber distribution hub (FDH) includes an enclosure and brackets with provisions to be mountable in multiple configurations. More particularly, the FDH is mountable in multiple configurations to a pole. The FDH includes provisions to be reconfigurable within the enclosure. More particularly, a hinged storage panel is reconfigurable between a... Agent: Merchant & Gould PC

20090263097 - Multi-configuration mounting system for fiber distribution hub: A fiber distribution hub (FDH) includes an enclosure and brackets with provisions to be mountable in multiple configurations. More particularly, the FDH is mountable in multiple configurations to a pole. The brackets are rearrangeable to provide the mounting configuration with either a short or extended offset between an FDH cabinet... Agent: Merchant & Gould PC

20090257703 - Optical device with a graded bandgap structure and methods of making and using the same: An optical device includes at least two materials forming a structure with a graded bandgap where photocarriers are generated. A first of the at least two materials has a larger concentration at opposed ends of the graded bandgap structure than a concentration of the first of the at least two... Agent: Hewlett-packard Company Intellectual Property Administration

20090257704 - Gas detection apparatus using optical waveguide: Provided is a gas detection apparatus comprising an optical waveguide, wherein the optical waveguide comprises: a core formed on a substrate, the core having a refraction index of n1; and a clad to cover an upper part of the core, the clad having a refraction index of n2, wherein at... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090257705 - Optical sensor: An optical sensor includes a light source, a sensing unit, a first optical fiber transmitting light from the light source to the sensing unit, second and third optical fibers transmitting the light from a reflecting surface of the sensing unit to light-receiving portions, and a calculation unit calculating physical quantities... Agent: Sughrue Mion, PLLC

20090257707 - Optical/electrical mixed mounting substrate: The present invention provides a hybrid optical/electrical circuit board in which an optical waveguide prepared by an exposing and developing step is combined with an electric circuit, wherein a printed wiring board containing an inorganic filler and a light absorber is used, and it has an optical waveguide core pattern... Agent: Antonelli, Terry, Stout & Kraus, LLP

20090257706 - Polarization component processor, method of processing polarization components and integrated photonic circuit employing the same: An apparatus and a method by which polarization components may be processed separately, for example, to enable a polarization beam splitter (PBS) or a switch. In one embodiment, the apparatus includes: first and second Mach-Zehnder interferometers, each Mach-Zehnder interferometer having input and output optical couplers and two internal optical arms,... Agent: Hitt Gaines, PC Alcatel-lucent

20090257708 - Optical component, fiber collimator array and wavelength selective switch: The invention provides a fiber collimator array including a fiber array in which a plurality of optical fibers is arrayed and a microlens array in which microlenses are arrayed on positions corresponding to the plurality of optical fibers on a transparent substrate. Each microlens and the transparent substrate are oppositely... Agent: Staas & Halsey LLP

20090257709 - Optical switch: An optical switch comprises a plurality of input ports and a plurality of out port ports; a plurality of displaceable optical elements for directing beams from a selected input to a selected output; wherein the number of displaceable elements substantially corresponds to either the number of input ports or the... Agent: Workman Nydegger 1000 Eagle Gate Tower

20090257710 - Rotary transformer: A rotary transformer having first light-conducting curved tube segments, the first tube segments being disposed to form a first tubular arrangement, is disclosed. The rotary transformer has at least one first transmitter for producing first light signals and at least one first receiver for receiving the first light signals. The... Agent: Siemens Corporation Intellectual Property Department

20090257711 - Systems and techniques for generating bessel beams: A technique is described for generating a Bessel beam. An input optical fiber is provided that supports propagation in the fundamental mode. The input fiber is connected to a fiber mode converting device that provides phase matching, at a predetermined excitation wavelength, between the fundamental mode and a selected azimuthally... Agent: Jacobs & Kim / Ofs

20090257712 - Waveguide with asymmetric outcoupling: A waveguide (1), arranged to guide light from at least one light source (3), comprising an outcoupling structure (4) adapted to enable outcoupling of said light from said waveguide in a general outcoupling direction, and at least one guiding edge (5) adapted to contain said light in said waveguide by... Agent: Philips Intellectual Property And Standards

20090257713 - Waveguide device: A waveguide device that guides light through a core part formed in a cladding part is disclosed. The waveguide device includes a waveguide part formed in the cladding part so as to have the same refractive index as the refractive index of the core part so that the waveguide part... Agent: Ipusa, P.l.l.c

20090257714 - Multimode reflective tap: A glass optical reflective tap is described that optically connects two optical fibers and may tap a portion of the light that is being communicated between the optical fibers. In one embodiment of the invention, the optical filter includes two D-lenses that operate as focusing or collimator lenses. The first... Agent: North Weber & Baugh LLP

20090257715 - Dynamic waveform shaping in a continuous fiber: A system for dynamic waveform shaping in an optical fiber comprising: the optical fiber receiving an optical waveform, the optical waveform having individual spectral lines; a plurality of fiber bragg gratings in-line on the optical fiber, each having a reflectivity wavelength corresponding to one of the spectral lines; a plurality... Agent: Ogilvy Renault LLP

20090257716 - Optical star coupler: A plastic optical fiber (POF) based reflective star coupler is provided. The POF based reflective star coupler comprises a hollow cylindrical holding tube for receiving a plurality of plastic optical fibers (POF) at a front end of the holding tube and a mixing rod at a rear end of the... Agent: Klein, O'neill & Singh, LLP

20090257717 - Fiber optic connector assembly and method for venting gas inside a fiber optic connector sub-assembly: A fiber optic connector assembly and method for venting gas inside in a fiber optic connector sub-assembly. The fiber optic connector assembly includes a connector sub-assembly including a ferrule and a ferrule holder having a passage extending therethrough. A stiffener tube having a tube body disposed about a portion of... Agent: Corning Incorporated

20090257718 - Optical connector having optical fiber: In an optical connector with optical fibers in which silica glass optical fibers with resin coating layers remaining attached are connected in optical fiber openings of a ferrule made from resin, at least a part of the resin coating layer of the optical fiber is glued to an inner face... Agent: Sughrue Mion, PLLC

20090257719 - Low loss self centering fiber optic connector: A fiber optic connector assembly.... Agent: Bracewell & Giuliani LLP

20090257720 - Optical communication module: Disclosed is an optical communication module including a module base in an approximately rectangular shape in which the light path member is introduce from one end surface in a longitudinal direction, a cover member provided at an upper portion of the module base and a plurality of pairs of conductive... Agent: Frishauf, Holtz, Goodman & Chick, PC

20090257721 - Optical transmission element having high temperature stability: An optical transmission element has a number of optical waveguides, which are arranged as a bundle and are embedded in a filling composition. The optical waveguides and the filling composition are surrounded by a tube. A material comprising a resin, which for example contains an acrylate enriched with a filler,... Agent: Corning Incorporated

20090257722 - Plural fiber optic interconnect: A fiber optic connector for connecting a plurality of optical fibers comprising a plurality of fiber optic assemblies, each assembly including at least one optical fiber coupled to a ferrule, the ferrule being coupled to a spring. A connector housing is configured to support the plurality of optical fibers. The... Agent: Blank Rome LLP

20090257723 - Fiberscopes and fiber bundles: An elongate imaging fiber bundle may include a plurality of elongate optical fibers coherently arranged in the bundle, the plurality including peripheral fibers at a periphery of the bundle and deep fibers deep to the peripheral fibers, and a coating surrounding the plurality of fibers. An exposed length of the... Agent: Foley Hoag, LLP Patent Group, World Trade Center West

20090257724 - Nonlinear optical fiber, nonlinear optical device, and optical signal processing apparatus: A core includes a center core region, a core layer that is formed around the center core region and that has a refractive index lower than that of the center core layer, and at least one buffer core layer that is formed between the center core region and the core... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, L.L.P.

20090257725 - Preform for an optical fibre: The present invention provides a method of fabricating a preform (10) for a microstructured optical fibre. The method includes providing at least one hole forming element (13) in a mold. Each hole forming element (13) is elongate and is composed of a polymeric material that stretches and reduces in thickness... Agent: Weingarten, Schurgin, Gagnebin & Lebovici LLP

20090257726 - Fiber management panel: A telecommunications termination panel includes a housing having a top, a bottom, a first side and a second opposing side defining a front opening and a rear opening. The housing defines a cable entry adjacent the rear opening and a cable exit adjacent the rear opening, wherein the rear opening... Agent: Merchant & Gould PC

20090257727 - Optical fiber coupler module: A glass-fiber coupler module includes a cassette mount, a mounting panel pivotally coupled to the cassette mount, a front panel coupled to the cassette mount, and a splitter coupled to the second side of the cassette mount. A first side of the cassette mount defines a storage area configured to... Agent: Merchant & Gould PC

20090257728 - Terminal shields for protecting optical components in optical assemblies: Terminal shields are provided that are configured to protect an optical terminal device. The terminal shield comprises a first portion configured to be secured with respect to the optical terminal device. The terminal shield further comprises a second portion pivotally attached to the first portion. The second portion is configured... Agent: Corning Incorporated

20090252451 - Intensity modulated fiber optic strain sensor: A strain sensor includes an optical fiber with at least one optical fiber, a reflector body with a reflective surface, a housing affixed to the optical fiber probe and to the reflector body. The reflective surface is spaced apart at a distance d from the ends of the probe's fibers... Agent: Naval Research Laboratory Associate Counsel (patents)

20090252450 - Regression and erosion measurement system and method: A method and system for determining the length of collocated waveguides in a high erosion environment, such as a solid rocket motor or a braking system. The system provides for mating optical waveguides having different attenuation coefficients within the combusting, eroding, or otherwise regressing material. Optical energy generated by the... Agent: Gunn & Lee, P.C.

20090252452 - Optical power delivery system: An optical transmission system comprising a laser light source arranged to emit light having a frequency ω; and an optical transmission line adapted to guide the light, wherein said optical transmission line includes a photonic bandgap optical fibre having a core guided mode at frequency ω and an attenuation band... Agent: Mcdermott Will & Emery LLP

20090252453 - Optical selector switch and signal-processing apparatus: An optical selector switch contains an optical waveguide that includes a first optical waveguide portion having a first light-transmissivity, a second optical waveguide portion having a second light-transmissivity, reflecting members that reflect light, and a light-dividing device that reflects and transmits light; at least one light-emitting unit that emits the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090252454 - Fiber-optic termination with brewster angled tip: A fiber-optic termination with Brewster angled tip is disclosed, which allows minimizing the reflection loss of a polarized light while maximizing the coupling of the refracted polarized light along the axis of the optical fiber. In a preferred embodiment, the fiber-optic termination has a Brewster angled tip which is free... Agent: Louis Tessier

20090252455 - Optical path changing member: An optical path changing member is assembled at ends of optical fibers and placed to face a substrate including an optical input/output terminal having optical axes inclined with respect to optical axes of the ends. The optical path changing member is made of a transparent material and includes a member... Agent: Sughrue Mion, PLLC

20090252456 - Optical mode-converter structure: An apparatus comprising an optical-mode-converter structure. The optical-mode-converter structure includes a tapered optical core on a planar substrate, an optical cladding layer covering the tapered optical core and a mode-expanding layer. The mode-expanding layer covers the tapered optical core and is located in-between the tapered optical core and the optical... Agent: Hitt Gaines, PC Alcatel-lucent

20090252457 - Waveguide structure and arrayed waveguide grating structure: Provided are a waveguide structure and an arrayed waveguide grating structure. The arrayed waveguide grating structure includes an input star coupler, an output star coupler, and a plurality of arrayed waveguides optically connecting the input star coupler and the output star coupler. Each of the arrayed waveguides includes at least... Agent: Ampacc Law Group

20090252458 - Optical attenuator: An attenuator connector comprising a housing having a front and rear orientation, a ferrule disposed in the housing, a clamping assembly disposed in the housing rearward of the ferrule and adapted to receive and retain a terminating fiber and a stub of attenuating fiber disposed in the ferrule.... Agent: Tyco Technology Resources

20090252459 - Expanded beam connector concepts: A terminus for a fiber optic cable includes a ferrule. In one embodiment, an optical fiber of the cable passes through a central bore of the ferrule and is attached to a lens seated in a conical or cylindrical seat formed in an end surface of the ferrule by an... Agent: Commscope By Muncy, Geissler, Olds & Lowe, PLLC

20090252460 - Optical connector and method of attaching optical fiber cord to optical connector: An optical connector has a simple structure and a method of attaching an optical fiber cord to the connector is easy. The connector 1 includes: a plug part 2 which has a capillary 5 provided at the front and containing a built-in optical fiber 6 and which includes a mechanical... Agent: GlobalIPCounselors, LLP

20090252461 - Bi-directional optical module and a method for assembling the same: A bi-directional optical subassembly (BOSA) is disclosed. The BOSA of the present invention provides first and second optical devices, a WDM filter and the body that is configured to secure two optical devices and to install the WDM filter. The body has a cylindrical shape with a large bore, a... Agent: Venable LLP

20090252462 - Optical box and method of connecting optical fibres: An optical box includes a first part suitable for fastening to an optical fibre distribution cable and a second part having an opening intended for the passage of at least one optical fibre dropped from the distribution cable and at least one optical component positioned in the second part for... Agent: Adams Intellectual Property Law, P.A.

20090252464 - Fiber deployment assembly and method: A method for making a Fiber deployment assembly includes creating a curvature in a conduit; pumping one or more fibers into the conduit; and securing at least one of the one or more fibers to a shortest pathway within the conduit and Fiber deployment assembly.... Agent: Cantor Colburn, LLP

20090252463 - Rtci cable and method: A method for making a Fiber deployment assembly includes creating a curvature in a conduit; pumping one or more fibers into the conduit; and securing at least one of the one or more fibers to a shortest pathway within the conduit and Fiber deployment assembly.... Agent: Cantor Colburn, LLP

20090252465 - Waveguide and resonator capable of suppressing loss due to skin effect: The objective of the present invention is to provide a waveguide and resonator capable of suppressing the energy loss due to the skin effect. A conductive material layer is formed in the vicinity of an inside tube in the region between an outside tube and the inside tube which share... Agent: Oliff & Berridge, PLC

20090252466 - Air blown optical fiber unit for reducing micro-bending loss: Disclosed is an air blown optical fiber unit for reducing a micro-bending loss. The air blown optical fiber unit includes at least one optical fiber; a buffer layer surrounding the optical fiber and made of polymer resin having a Young's modulus of 0.05 to 2 kgf/mm; and an outer layer... Agent: Jones Day

20090252467 - Broadband light source device: A broadband light source device that can generate supercontinuum light in a visible range and having a spectrum with a stable shape and high intensity is provided. The broadband light source device includes a diode-pumped solid-state laser light source that outputs seed light in response to being excited by a... Agent: Venable LLP

20090252468 - Optical fiber preform including a non-axisymmetric cross section: A method for manufacturing an optical fiber includes the steps of covering an outer periphery of a first glass (11) having a first softening temperature and a non-axisymmetric structure by a second glass (12, 13) having a second softening temperature which is lower than the first softening temperature, heating the... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090252469 - Dispersion-shifted optical fiber: A dispersion-shifted optical fiber (NZDSF) includes a central core (r1, Dn1), an inner cladding having at least three zones with a first intermediate cladding zone (r2, Dn2), a second ring zone (r3, Dn3) and a third buried trench zone (Wtr, Dnt). The buried trench zone has an index difference (Dnt)... Agent: Summa, Additon & Ashe, P.A.

20090252470 - Optical fibers and optical transmission systems: The optical fiber made from pure silica comprising a core region, a cladding region at the circumference of the core region a coating layer made from a resin at the circumference of the cladding region, and having a cutoff wavelength of shorter than 1530 nm, and positive dispersion at 1550... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090252471 - Condensation products of silicic acid derivatives and optical waveguide devices using the same: The present invention relates to condensation products of silicic acid derivatives usable especially in optical waveguides and particularly to a condensation product obtained by condensing a silane diol compound (A) of the general formula (1): R12Si(OR2)2 (1) wherein R1 represents a group having at least one aromatic group and having... Agent: Oblon, Spivak, Mcclelland Maier & Neustadt, P.C.

20090252472 - Fiber optic splice enclosure: Certain example embodiments of a splice enclosure include a housing defining an opening for allowing a trunk cable to be passed through the housing. The splice enclosure also includes a splice tray stack pivotally mounted within the housing and a cable management tray that mounts within the housing beneath the... Agent: Merchant & Gould PC