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| Number | Title | Issue Date |
| 7430881 | Method of making an optical fiber attachment device Low-loss large diameter optical waveguide attachment devices (i.e., pigtails) and methods and systems of making the same are provided. The optical waveguide attachment devices may include an optical fiber (or other type waveguide) embedded in a larger diameter carri... | 10/07/2008 |
| 7418836 | Photonic bandgap fibers Included among the many structures described herein are photonic bandgap fibers designed to provide a desired dispersion spectrum. Additionally, designs for achieving wide transmission bands and lower transmission loss are also discussed. For example, in some fiber ... | 09/02/2008 |
| 7317856 | Method of making optical fiber and optical fiber made by the method Provided is a method of manufacturing an optical fiber preform from which an optical fiber having the desired characteristics can easily be produced. The method comprises the steps of: (1) preparing an intermediate preform for manufacturing an optical fiber preform;... | 01/08/2008 |
| 7308807 | Method of manufacturing a leached fiber bundle A mesh (36) is placed around a bundle (32) of fused glass fibers. The bundle is then immersed in a leaching bath (44). The ends of the bundle are protected from the bath fluid by furrules (34). Some of the glass of the bundle is leached o... | 12/18/2007 |
| 7221822 | Multi-fibre arrangement for high power fibre lasers and amplifiers An optical fiber arrangement has at least two optical fiber sections, each optical fiber section defining an outside longitudinally extending surface. The outside longitudinally extending surfaces are in optical contact with each other. The invention further provide... | 05/22/2007 |
| 7197217 | Method of making a fiberoptic light guide A method of making a fiberoptic light guide utilizes a hollow glass cladding blackened by chemical reduction. The cladding has a predetermined lead content and is heated to an elevated temperature in an atmosphere of substantially 100% hydrogen gas in a furnace. The... | 03/27/2007 |
| 7080529 | Method for making large diameter optical waveguide having Bragg grating and being configured for reducing the bulk modulus of compressibility thereof The present invention provides a method for making a multicore large diameter optical waveguide having a cross-section of at least about 0.3 millimeters, two or more inner cores, a cladding surrounding the two or more inner cores, and one or more side holes for redu... | 07/25/2006 |
| 6978074 | Fiber optic sensors for gas turbine control An apparatus for detecting flashback occurrences in a premixed combustor system having at least one fuel nozzle includes at least one photodetector and at least one fiber optic element coupled between the at least one photodetector and a test region of the combustor... | 12/20/2005 |
| 6950239 | Method for making micro-lens array A method for manufacturing a light controlling structure, generally referred to as a microlens or microlens array. The method including providing a bundle of optically transparent members; cutting the bundle of optically transparent members to form at least one shee... | 09/27/2005 |
| 6928218 | Fiber plate, manufacturing method thereof, radiation imaging apparatus and radiation imaging system Disclosed is a technology for obtaining a large area fiber plate suited for downsizing a radiation imaging apparatus and reducing its cost and excellent of workability in the manufacturing process. A multi-fiber is manufactured by bundling and drawing a plurality of... | 08/09/2005 |
| 6917144 | Microchannel plate having input/output face funneling A microchannel plate (P) for receiving photoelectrons includes a plate-like substrate web (W) formed from a plurality of micro-tubules (10) of a single type of cladding glass (12) and defining a pair of opposite faces (14a and 14 | 07/12/2005 |
| 6917741 | Methods for manufacturing microstructured optical fibers with arbitrary core size The present invention provides methods for manufacturing microstructured optical fibers having an arbitrary core size and shape. According to one embodiment of the invention, a method of fabricating a photonic band gap fiber includes the steps of forming an assembly... | 07/12/2005 |
| 6865322 | Fiber optic device with enhanced resistance to environmental conditions and method A method for producing fiber optic devices having improved intrinsic resistance to external environmental conditions and a fiber optic device made my the method are disclosed. The fabrication method produces an optic device that is treated with deuterium. The method... | 03/08/2005 |
| 6775450 | Micro-structured optical fibers A micro-structured optical fiber precursor 1 is made by size reducing a multiple core optical fiber having solid multiple cores or a multiple core optical fiber preform O having multiple solid core preforms C. A fiber fuse is induced in at least one of the co... | 08/10/2004 |
| 6763685 | Fabrication of multiplexing and demultiplexing single-mode fiber optic couplers Multiplexing and demultiplexing single-mode fiber optic couplers are fabricated by aligning two single-mode fibers which have been stripped of their protective plastic jackets and cleaned so that they are held in parallel contact with each other, and then fusing the... | 07/20/2004 |
| 6741774 | Fiber optic device with enhanced resistance to environmental conditions and method A method for producing fiber optic devices having improved intrinsic resistance to external environmental conditions and a fiber optic device made my the method are disclosed. The fabrication method produces an optic device that is treated with deuterium. The method... | 05/25/2004 |
| 6738549 | Polarization maintaining optical fiber and production method for polarization maintaining optical fiber preform The present invention provides a polarization maintaining optical fiber of which polarization crosstalk characteristic is not deteriorated after fusing two or more polarization maintaining optical fibers, and provides a method for producing a preform thereof. The po... | 05/18/2004 |
| 6718106 | Cladding-pumped optical fibre and method for making same The invention concerns an optical fiber pumped through the cladding, including: a core having an optical index n1, around the core, a first cladding having an index n2 lower than n1, and around the first cladding, a second ... | 04/06/2004 |
| 6711918 | Method of bundling rods so as to form an optical fiber preform The present invention provides a simple method for fabricating fiber-optic glass preforms having complex refractive index configurations and/or dopant distributions in a radial direction with a high degree of accuracy and precision. The method teaches bundling toget... | 03/30/2004 |
| 6701046 | Method for producing an optical coupler for extracting a signal from a polarization maintaining optical fiber, and corresponding coupler A fused optical coupler comprising a polarization maintaining fiber and a standard fiber is provided. The cross-section of the said standard fiber is smaller than the cross-section of the polarization maintaining fiber in the area of fusion of the coupler... | 03/02/2004 |
| 6658896 | Method of making a fiberoptic light guide A method of making a fiberoptic dental light probe having a bent distal end with a tapered tip. The method includes the step of heating just the mid-section of a vertically-disposed, solid, cylindrical fused fiberoptic rod and permitting the midsection to... | 12/09/2003 |
| 6640588 | Method of making microporous structure defined by a multiplicity of singular channels A microporous structure can be formed from ductile material such as glass into an axially extended outer wall surrounding a plurality of singular micro-passages surrounded by the outer wall to provide an open area that extends continuously over the length... | 11/04/2003 |
| 6598428 | Multi-component all glass photonic band-gap fiber A method of producing an all glass, non-porous, multi-component photonic band-gap fiber is provided. The fiber is formed by creating a preform having a plurality of low refractive index glass rods and a plurality of high refractive index glass rods arrang... | 07/29/2003 |
| 6578388 | Grating assisted coupler devices An add/drop filter for optical wave energy incorporates a Bragg grating in a very narrow waist region defined by merged lengths of elongated optical fibers. Light is propagated into the waist region via adiabatically tapered fibers and is transformed from... | 06/17/2003 |
| 6553174 | Optical fiber array assembly with preform for supporting fibers A preform having an array of axially extending holes is reduced in diameter for adjusting a spacing between the holes as well as the hole diameters to desired dimensions. Sections of the reduced preform having the desired dimensions are removed for suppor... | 04/22/2003 |
| 6543256 | Optical fiber coupler making apparatus made from zirconia and method In an optical fiber coupler making apparatus which makes an optical fiber coupler by thermally fusing a plurality of optical fibers together by use of a heater and then elongating thus thermally fused part, the heater comprises a heating element which is ... | 04/08/2003 |
| 6516635 | Apparatus and method for making a joint-free Mach-Zehnder interferometer Method and system for constructing and testing integrity of a combination of first and second spaced apart optical fiber couplers that each receive and hold two fibers. A segment of each fiber in a separation region between the couplers is heated, twisted... | 02/11/2003 |
| 6444133 | Method of making photonic band gap fibers A method is provided for making a photonic band gap fiber including the steps of etching a preform and then drawing the preform into a photonic band gap fiber. Glass tubes are bundled and then formed into a photonic crystal perform having a number of pass... | 09/03/2002 |
| 6438997 | Method of elongating glass preform In a method of elongating a glass preform comprising the steps of holding both ends of the glass preform 1a with a first holding section 2 and a second holding section 3, respectively; moving the first holding section 2 and the second holding section 3 in... | 08/27/2002 |
| 6427491 | Method for making fibers having cores with non-circular cross-sections An optical fiber with a non-circular cross-section is realized by creating a void having the desired cross-section in a housing and filling the void with an optical material. This structure is then collapsed to solidify it and drawn to desired dimensions.... | 08/06/2002 |
| 6397636 | Method of applying a precursor to an assembled fiber bundle and fusing the bundle together Optical fiber bundles having high optical throughput can be produced with relatively high yield if gaps between fibers are eliminated by application of a particle-containing glass precursor material, exemplarily fumed silica in an aqueous medium. Manufact... | 06/04/2002 |
| 6370919 | Method of setting parameters for welding optical waveguides by determining the reduction of a construction diameter A test optical fiber section (F) that resides under tensile stress (F) is heated in at least one longitudinal location so that a constriction (Ɗd) of its outside circumference forms thereat. This constriction (Ɗd) is acquired and utilized for setting we... | 04/16/2002 |
| 6301420 | Multicore optical fibre An optical fiber for transmitting radiation comprising two or more core regions, two or more core regions, each core region comprising a substantially transparent core material and having a core refractive index, a core length, and a core diameter, wherei... | 10/09/2001 |
| 6289699 | Wavelength selective optical couplers A wavelength selective optical fiber coupler having various applications in the field of optical communications is disclosed. The coupler is composed of dissimilar waveguides in close proximity. A light induced, permanent index of refraction grating is re... | 09/18/2001 |
| 6237370 | Apparatus for automated production, and/or packaging and/or testing of fiber optic devices including optical fiber system components and optical fibers A system for automated production of a fiber optic device includes a chamber regulating an environment and/or atmosphere within for the automated production of the fiber optic device. The system also includes a sealable input port, communicating with the ... | 05/29/2001 |
| 6112555 | Method for changing incident heat and pulling of an optic fiber via monitoring of rate of change of coupling ratio Fused biconical tapered couplers formed from the pulling of heated optical fibers have controllable coupling ratios by dynamically adjusting the heat intensity and pull speed during fabrication. Fiber coupler fabrication begins by arranging two optical fi... | 09/05/2000 |
| 6092394 | Apparatus for automatically coupling two optical fibers in a tube An automated method and apparatus for making optical fiber couplers is disclosed. The apparatus includes various processing stations under the control of a programmable controller. A fiber feeding system receives a set of optical fibers from a reel and gu... | 07/25/2000 |
| 6089044 | Process for making preforms for multicore optical fibers Process for making preforms for multicore optical fibers. According to this process, several elementary preforms are made, a first machining is performed on them such that a chosen geometric model will be obtained after they are assembled, a second machin... | 07/18/2000 |
| 6053012 | Method for manufacturing glass preform and glass fiber A method for manufacturing a glass preform from a metal sulfide chalcogenide glass to which a large amount of light emitting substances can be added includes steps of etching a surface made of the chalcogenide glass or oxychalcogenide glass of disc shape ... | 04/25/2000 |
| 6018965 | Method of forming a fiber optic coupler by dynamically adjusting pulling speed and heat intensity based on a monitored rate of change in the coupling ratio Fused biconical tapered couplers formed from the pulling of heated optical fibers have controllable coupling ratios by dynamically adjusting the heat intensity and pull speed during fabrication. Fiber coupler fabrication begins by arranging two optical fi... | 02/01/2000 |
