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| Number | Title | Issue Date |
| 7421858 | Optical transmission substrate, method for manufacturing optical transmission substrate and optoelectronic integrated circuit Provided is an optical transmission substrate including: a first substrate; an optical waveguide which has clad covering a core and a periphery of the core and extends on an upper surface of the first substrate; a second substrate provided parallel to the first subs... | 09/09/2008 |
| 7341383 | Dual inner diameter ferrule device and method A fiber optic ferrule includes a body extending from a first end to a second opposite end, with the body including an axial passage extending between the first and second ends. The axial passage includes a first diameter portion having a diameter of at least 125 mic... | 03/11/2008 |
| 7069749 | Method of manufacturing a solid preform The present invention relates to a method of manufacturing a solid preform by moving a heat source parallel to the longitudinal axis of a substrate tube, whose inner surface is coated with one or more doped or undoped glass layers, so as to collapse the substrate tu... | 07/04/2006 |
| 7027703 | Method for forming and apparatus comprising optical waveguides leading to a free space coupler region A method for forming and apparatus comprising a free space coupler region having a plurality of optical waveguides coupled to the space coupler region at an interface region, the waveguides converging with one another to the interface region, and a trench formed bet... | 04/11/2006 |
| 7000434 | Method of creating an angled waveguide using lithographic techniques A waveguide having an angled surface is created by depositing an optical core material onto a substrate having two levels. In one embodiment, a high density plasma deposition may be used to deposit the optical core material. ... | 02/21/2006 |
| 6996315 | Process for producing a leached fiber bundle, and improved leached fiber bundle A leached fiber bundle with the light outlet points positioned as accurately as possible is provided, in which the end faces are not completely fused together, but rather are only fused together at their contact surfaces. The interstices formed are permanently fille... | 02/07/2006 |
| 6979111 | Fiber optic based light ornament A decorative light assembly comprises a plurality of optical fibers formed into a bundle having a length greater than one inch, the bundle having a first end for receiving light, and a second end that is fused for providing the received light as decorative illuminat... | 12/27/2005 |
| 6928841 | Optical fiber preform manufacture using improved VAD The specification describes a VAD method for producing optical fiber preforms by depositing soot onto a solid core rod. The solid core rod preferably has a uniform composition, doped or undoped, suitable for the center core region of the preform. The primary claddin... | 08/16/2005 |
| 6925839 | Method for making capillary splice A method of making a capillary splice includes applying pressure to a bore in a tube, applying heat to a portion of the tube to soften the portion of the tube, and forming a bubble within the bore in the heated portion under the influence of the pressure and heat. W... | 08/09/2005 |
| 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 |
| 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 |
| 6843076 | Single step laydown method of making dry fiber with complex fluorine doped profile A method of making an optical waveguide preform includes forming a preform including a first portion and a second radial portion, wherein the second portion includes a dopant, and wherein the first portion exhibits a density greater than the second portion. The meth... | 01/18/2005 |
| 6821449 | Two step etching process for an optical fiber preform This invention relates to a method of preparing an optical fiber preform with the preform having a uniform refractive index profile for the deposited oxide material that ultimately forms the optical fiber core. One embodiment of the invention relates to a process fo... | 11/23/2004 |
| 6802190 | Method of fabricating a GRIN fiber A method for fabricating a GRIN fiber includes forming a tube of silica-glass having a tubular core and a concentric tubular cladding adjacent and external to the tubular core. The core has a dopant density with a radially graded profile. The method includes partial... | 10/12/2004 |
| 6756104 | Surface finishes on laser rods and slabs for laser peening systems A laser gain medium and a method of manufacturing a laser medium, such as a laser rod, or slab for use in high-powered laser peening systems. A laser medium and method reduces stress risers along the surface of the amplifier medium by grit blasting, polishing, etchi... | 06/29/2004 |
| 6748767 | Drawing an optical fiber from a sol-gel preform treated with a non-oxygenated sulfur halide Fiber is drawn from a preform comprising a silica body, e.g., a sol-gel derived overcladding or substrate tube. Prior to sintering, the body is treated with a gaseous mixture containing one or more non-oxygenated sulfur halides, to remove and/or reduce the size of r... | 06/15/2004 |
| 6718800 | Method of collapsing a tube for an optical fiber preform The present invention provides a method of preparing preforms for optical fibers. The invention allows one to remove or significantly reduce undesirable refractive index variations in the central portion of the optical fibers. The method of preparing the preform hav... | 04/13/2004 |
| 6705124 | High-density plasma deposition process for fabricating a top clad for planar lightwave circuit devices A method for performing high aspect ratio gap fill during planar lightwave circuit top clad deposition. A plurality of waveguide cores are formed on a substrate, the waveguide cores having a plurality of gaps there between. A cladding layer is formed over the wavegu... | 03/16/2004 |
| 6666984 | Chemical stripping apparatus and method An apparatus for forming a loop in a filament comprising a first wall having a first guide slot formed therein and a second wall having a second guide slot formed therein coplanar and parallel to the first guide slot. The first wall is opposite the second... | 12/23/2003 |
| 6615614 | Method for preparing optical waveguide substrate An optical waveguide substrate is prepared by forming grooves in a silicon substrate in accordance with the pattern of a desired waveguide device, thermally oxidizing the silicon substrate to form a peripheral quartz layer surrounding the grooves, burying... | 09/09/2003 |
| 6553791 | Etching an optical fiber fusion splice An exposed part of at least one of two optical fibers with different mode field distributions to be fusion spliced is heated by a burner, to thereby continuously vary its mode field distribution in the longitudinal direction of the optical fiber, and the ... | 04/29/2003 |
| 6547920 | Chemical stripping apparatus and method An apparatus for forming a loop in a filament comprising a first wall having a first guide slot formed therein and a second wall having a second guide slot formed therein coplanar and parallel to the first guide slot. The first wall is opposite the second... | 04/15/2003 |
| 6532773 | Method of modifying the index profile of an optical fiber preform in the longitudinal direction The refractive index profile of a multimode optical preform, fabricated by MCVD for example, is modified in the longitudinal direction by removing selected amounts of core material from the wall of a central hole through the preform prior to collapse. The... | 03/18/2003 |
| 6446469 | MCVD method with GE depletion to form a single mode optical fiber The present invention relates to a single-mode optical fiber having a configuration which enables lowering of dispersion slope while securing a sufficient MFD. This single-mode optical fiber has a refractive index profile in which an indent with a suffici... | 09/10/2002 |
| 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 |
| 6356694 | Process for producing planar waveguide structures as well as waveguide structure A process for producing a waveguide, wherein a first layer is deposited on a silicon or glass substrate, a core structure is subsequently structured, and the core structure is protected by a protective layer. Prior to each step for depositing a new layer,... | 03/12/2002 |
| 6223562 | Etching a halide glass tube, removing the etchant, and forming an optical fiber The surface quality of halide, preferably fluoride, articles, e.g., articles used in the preparation of halide fibers is improved by cleaning the surface with an aqueous etchant and thereafter removing the etchant by washing the surface with methanol. The... | 05/01/2001 |
| 6131413 | Method of controlling the etching and collapse of an MCVD tube by monitoring internal pressure In a method of shrinking a tubular optical fiber preform with a doped silica core the preform is placed on a glassmaking lathe to rotate it about an axis, a torch is moved parallel to the axis in front of the preform to shrink it and collapse it in a numb... | 10/17/2000 |
| 6131414 | Method for making a preform for optical fibers by drawing a mother ingot A method for drawing a mother ingot into a preform for optical fibers comprises providing a mother ingot, subjecting the mother ingot to measurement of a distribution of refractive index along radial directions thereof to determine a ratio of a core diame... | 10/17/2000 |
| 6097867 | Technique for fabrication of a poled electro-optic fiber segment A low-cost fabrication technique, readily extensible to volume manufacturing is presented for an electro-optically active fiber segment (31) that can be simply integrated into optoelectronic devices. The fabrication technique offers a dielectric isolation... | 08/01/2000 |
| 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 |
| 5897679 | Dimensional control in the manufacture of optical fiber ferrule connectors by etching The specification describes techniques for chemically machining extruded glass preforms used to draw glass ferrules for optical fiber connectors. Using the chemical machining technique the dimensions of the preform, including OD, ID, and the OD to ID rati... | 04/27/1999 |
| 5837334 | Large sized quartz glass tube, large scale quartz glass preform, process for manufacturing the same and quartz glass optical fiber A quartz glass tube, produced by mechanically processing a natural/synthetic quartz glass mother material, having 50-300 mm$c; in outer diameter, from. 1 to 7 in outer to inner diameter ratio, 10 mm or more in thickness and 2% or less in thickness erro... | 11/17/1998 |
| 5703979 | Cylindrical fiber probe devices This invention involves a fiber probe device and a method of making it. The probe includes a relatively thick upper cylindrical region, typically in the form of a solid right circular cylinder, terminating in a tapered region that terminates in a relative... | 12/30/1997 |
| 5685889 | Method for flame abrasion of glass preform An optical fiber glass preform is preheated so that it is uniformly preheated therethrough, then a surface of the preform is abraded by an oxyhydrogen flame to obtain a smooth optical fiber glass preform. This method is advantageous when relatively larger... | 11/11/1997 |
| 5676724 | Method of improving the geometrical shape of a tube used for making a preform by selectively etching the bore of the tube A method of improving the symmetry of a cylindrical silica tube to be used in making a preform having a circular outside surface eccentric to a circular inside surface thereby providing a varying tube thickness throughout the circumference of the tube whi... | 10/14/1997 |
| 5656056 | Method for the fabrication of fluoride glass single mode optical fibers with flowing of an etchant through the fiber preform Fluoride glass optical fibers are fabricated by minimizing the number of high-temperature operations. A tube comprising an external layer of a first fluoride glass of composition suitable to form the cladding of the fiber and an internal layer of a second... | 08/12/1997 |
| 5618326 | Surface treatment of halide glass articles The surface quality of halide, preferably fluoride, articles, e.g. articles used in the preparation of halide fibres is improved by cleaning the surface with an aqueous etchant and thereafter removing the etchant by washing the surface with methanol. The ... | 04/08/1997 |
| 5617499 | Technique for fabrication of a poled electrooptic fiber segment A low-cost fabrication technique, readily extensible to volume manufacturing is presented for an electrooptically active fiber segment that can be simply integrated into optoelectronic devices. The fabrication technique offers a dielectric isolation struc... | 04/01/1997 |
| 5570441 | Cylindrical fiber probes and methods of making them This invention involves a fiber probe device and a method of making it. The probe includes a relatively thick upper cylindrical portion, typically in the form of a solid fight circular cylinder, terminating in a tapered portion that terminates in a relati... | 10/29/1996 |
