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| Number | Title | Issue Date |
| 8181487 | Optical fiber preform manufacturing method An optical fiber preform manufacturing method includes: supporting a drilling jig in a radial direction of a preform that is cylinder-shaped; moving the drilling jig in a longitudinal direction of the preform; and forming a plurality of slits each extending in the l... | 05/22/2012 |
| 7930905 | Methods for manufacturing low water peak optical waveguide incorporating a porous core mandrel A method of manufacturing a cylindrical glass optical waveguide preform having a low water content centerline region, for use in the manufacture of optical waveguide fiber, is disclosed. The centerline region of the glass optical waveguide preform has a water conten... | 04/26/2011 |
| 7841213 | Method of manufacturing photonic crystal fiber using structure-indicating rods or capillaries A method for manufacturing a photonic crystal fiber including arranging a spacer formed of two or more spacer parts in a support tube such that the inner wall surface of the support tube has a substantially regular polygonal cross-sectional shape which allows closes... | 11/30/2010 |
| 7779651 | Process for manufacturing a micro-structured optical fibre In a process for manufacturing a micro-structured optical fibre, an intermediate preform is made by forming a sol; pouring the sol in a cylindrical mould including a set of structural generating elements defining internal structural elements of the intermediate pref... | 08/24/2010 |
| 7730748 | Method of making a post-patent collimator assembly A method of manufacturing a collimator assembly is provided. The method includes placing a first core element within a first center collimator path of a first collimator tube to create a first base-tube couple. A couple cross-section of the first base-tube couple is... | 06/08/2010 |
| 7707854 | Method of producing microchannel and nanochannel articles A method of making an article having channels therethrough includes the steps of: providing a ductile structure defining at least one macro-channel, the macro-channel containing a salt; drawing the ductile structure in the axial direction of the at least one macro-c... | 05/04/2010 |
| 7677059 | Tellurite optical fiber and production method thereof A fabrication method of an optical fiber using as a core material tellurite glass. The method includes a first process of molding a tellurite glass melt into a mold, the mold having a plurality of convex portions defining an inner wall, which portions run parallel t... | 03/16/2010 |
| 7669440 | Side-hole cane waveguide sensor A side-hole optical cane for measuring pressure and/or temperature is disclosed. The side-hole cane has a light guiding core containing a sensor and a cladding containing symmetrical side-holes extending substantially parallel to the core. The side-holes cause an as... | 03/02/2010 |
| 7467528 | Method of fabricating dual hole glass ferrules The present invention relates to a preform for a glass ferrule and a fabrication method thereof. It is an objective of the present invention to fabricate dual hole ferrules having various distances between two holes by using a single preform. It is another objective... | 12/23/2008 |
| 7428360 | Optical waveguide sensor and method of manufacture An optical waveguide environmental sensor is provided that is capable of detecting a target gas or liquid in the ambient environment in an advantageously short period of time. The waveguide is preferably in the form of an optical fiber having a cladding that contain... | 09/23/2008 |
| 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 |
| 7420147 | Microchannel plate and method of manufacturing microchannel plate A method of fabricating a multichannel plate is provided. The method includes providing a N layers, each layer having an array of wells formed therein. The N layers are aligned and stacked. The stack of N layers are sliced along a first and second line of the array ... | 09/02/2008 |
| 7373061 | Laser energy transmission optical fiber, laser energy transmission method and laser energy transmission device A laser energy transmission optical fiber having an optical fiber main body which has a hollow-core region with a diameter greater than a wavelength of transmitted light, an inner clad region which has a solid portion with plurality of holes formed therein, and an o... | 05/13/2008 |
| 7366388 | Hollow-core optical fiber and method of making same An optical fiber having a cladding region surrounding a core region having an elongate core hole, the inner or outer surface of the core hole having a surface roughness with a spatial period equal to or less than 5 μm by a spectral power below 0.0017 nm2 | 04/29/2008 |
| 7333703 | Two-dimensional photonic crystal having air-bridge structure and method for manufacturing such a crystal The present invention intends to provide a two-dimensional photonic crystal having a high level of mechanical strength and functioning as a high-efficiency resonator. The two-dimensional photonic crystal according to the present invention includes a slab layer 31... | 02/19/2008 |
| 7295740 | High air fraction photonic band gap fibers A photonic band gap fiber and method of making thereof is provided. The fiber is made of a non-silica-based glass and has a longitudinal central opening, a microstructured region having a plurality of longitudinal surrounding openings, and a jacket. The air fill fra... | 11/13/2007 |
| 7266275 | Nonlinear optical fibre method of its production and use thereof An optical fiber having a longitudinal direction and a cross-section perpendicular thereto, said fiber in a cross-section comprising: (a) a core region (11) having a refractive index profile with a highest refractive index nc, and (b) a cladding re... | 09/04/2007 |
| 7261813 | Monolithic structures comprising polymeric fibers for chemical separation by liquid chromatography Monolithic cartridges including a plurality of nominally aligned polymer fibers can be used as stationary phase materials for liquid chromatography separations. Bundles of fibers are packed together so as to form capillary channels between the fibers. Different poly... | 08/28/2007 |
| 7236671 | Fiber bundles and methods of making fiber bundles The present invention relates to fiber bundles and methods for making fiber bundles. According to one embodiment of the invention, a fused fiber bundle has a terminal section ending with an endface, and includes a plurality of optical fibers, each of the optical fib... | 06/26/2007 |
| 7221837 | Device and method for reducing glass flow during the manufacture of microchannel plates The present invention provides a glass packing tube for use in fabricating a microchannel plate. The glass tube has a plurality of flat inner surfaces and is used to form a boule including a plurality of optical fibers located in the tube and a plurality of support ... | 05/22/2007 |
| 7215857 | Process and apparatus for elongating of an optical fibre preform A process and apparatus for elongating an optical fibre preform includes heating the preform so as to soften one region thereof; elongating the preform by submitting the preform to a traction; determining, during the step of elongating, the preform diameter in at le... | 05/08/2007 |
| 7155099 | Holey optical fibres of non-silica based glass To overcome problems of fabricating conventional core-clad optical fibre from non-silica based (compound) glass, it is proposed to fabricate non-silica based (compound) glass optical fibre as holey fibre i.e. one contining Longitudinal holes in the cladding. This re... | 12/26/2006 |
| 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 |
| 7058243 | Optical fiber sensor having a sol-gel fiber core and a method of making A simple, economic wet chemical procedure is described for making sol-gel fibers. The sol-gel fibers made from this process are transparent to ultraviolet, visible and near infrared light. Light can be guided in these fibers by using an organic polymer as a fiber cl... | 06/06/2006 |
| 6997016 | Method and apparatus for manufacturing glass tube Stress exerted on an inner or outer circumferential side of a glass tube 6 is controlled when a glass material 3 is heated and softened by a heating element 41 provided around the glass material 3 and a piercing plug 31 is relative... | 02/14/2006 |
| 6988381 | Method of elongating glass preform The present invention provides a method of elongating a glass preform having holes extending in the longitudinal direction while suppressing excess shrinkage of the holes. In the method of elongating a glass preform of the present invention, both ends of the glass p... | 01/24/2006 |
| 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 |
| 6826339 | Electromagnetically induced transparent (EIT) photonic band-gap fibers An electromagnetically induced transparent (EIT) photonic band-gap fiber (PBG). The EIT-PBG combines the pass gap and band gap properties of a photonic band gap (PBG) fiber with the transparency control of mediums exhibiting EIT effects, allowing the formation of va... | 11/30/2004 |
| 6738552 | Pressed capillary optics A capillary optic produced by impression has a mold with an external profile figured for radiation transmission along an axis used as a mandrel for impression. The mold often takes the form of a precisely etched wire. At least one soft plate is used for impressing t... | 05/18/2004 |
| 6735369 | Hollow optical fiber and method for manufacturing the same A hollow optical fiber 10 has an intermed ate dielectric layer 12 interposed between an inner periphery side dielectric layer 11 facing a hollow core portion 10a and a metal layer 13. The inner periphery side dielectric laye... | 05/11/2004 |
| 6705126 | Method for fabricating holey optical fiber There is provided an apparatus and method for fabricating a holey optical fiber. An optical fiber with air holes of a predetermined size and shape along the length of the optical fiber is drawn by supplying nitrogen gas into air holes through one end of a holey opti... | 03/16/2004 |
| 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 |
| 6640037 | Thin walled core band-gap waveguides Disclosed is a method of making a photonic crystal preform which provides improved properties of the photonic band-gap crystal waveguide fiber drawn therefrom. The photonic crystal preform defect is formed using materials having a particular shape or comp... | 10/28/2003 |
| 6571581 | Contactless extrusion apparatus An extrusion system for producing a desired extrusion profile on a continuously moving work piece has a die containing two or more pressurized fluid extrusion cells therein, through which the work piece passes. Fluid under pressure id directed against the... | 06/03/2003 |
| 6516636 | Method for producing a tube made of quartz glass using low internal pressure and control of diameters In a known method for the manufacture of a tube made of a vitreous material, especially of quartz glass, a hollow cylindrical semifinished product made of a vitreous material is carried essentially vertically to a heating zone, wherein it is heated and dr... | 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 |
| 6260388 | Method of fabricating photonic glass structures by extruding, sintering and drawing Disclosed is a method of making a photonic crystal using a combination of extruding and drawing techniques. The method is contemplated as being capable of producing both two and three dimensional crystals due to the maturity and diversity of extruding and... | 07/17/2001 |
| 6128927 | Method of making ferrule connectors for optical fibers A method for controlling a bore diameter of an optical fiber ferrule is disclosed. The diameter of the bore is controlled by collapsing the ferrule around a rod inserted in an over-sized bore formed therein. The diameter of the rod is selected to match th... | 10/10/2000 |
| 6098428 | Process for drawing glass fiber using prediction of future geometric parameter of the fiber A glass blank is sent to a heating zone where it is softened region by region and drawn continuously in a controlled manner as a drawing bulb is formed. Estimates of at least one controlled variable are predicted free of dead time; in addition, at least o... | 08/08/2000 |
| 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 |
