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| Number | Title | Issue Date |
| 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 |
| 7231786 | Process and device for manufacturing glass sheet The present invention relates to a process for manufacturing flat sheets of a glass-based material and to an apparatus therefor. The process comprises providing a glass preform, heating the glass preform in a furnace, forming a gob and a pre-sheet, removing the gob ... | 06/19/2007 |
| 7218813 | Optical communication system An optical communication system has a plastic optical fiber (POF) and an optical communication module. The POF has a spherical end surface, and light emitted from the spherical end surface has an NA of 0.35 or lower. The POF is installed in the module such that a li... | 05/15/2007 |
| 7206480 | Method of forming interlayer connections in integrated optical circuits, and devices formed using same A method and system of forming vertical optical interconnects in optical integrated circuits is disclosed. The method includes forming a first optical transmission layer over a substrate. A first cladding layer is then formed on the first optical transmission layer ... | 04/17/2007 |
| 7177512 | Solid type polarization maintaining fiber and apparatus Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, t... | 02/13/2007 |
| 7167621 | Optical fiber with suppressed stimulated Brillouin scattering and method for making such a fiber An optical fiber for the transmission of electromagnetic energy, where the fiber can have increased input power threshold for the onset of Stimulated Brillouin Scattering (SBS). The fiber can comprise a core and a cladding disposed about the core. The core can have ... | 01/23/2007 |
| 7161966 | Side-pumped fiber laser An optical fiber includes a radial axis, a longitudinal axis, a first window surface adapted for receiving pump radiation and transmitting the pump radiation into the optical fiber, a second surface adapted for totally internally reflecting pump radiation received w... | 01/09/2007 |
| 7158705 | Optical fiber with birefringence and large mode field diameter According to the present invention the optical fiber includes a core with a first refractive index (n1) and the innermost core region with the refractive index n0, a cladding surrounding the core, the cladding having a third refractive index (n... | 01/02/2007 |
| 7136567 | Cladding structure of optical fiber laser The present invention relates to a cladding structure of an optical fiber laser capable of allowing efficient optical pumping at a core of the optical fiber laser using the concept of quantum chaos, and more particularly, to a cladding structure of an optical fiber ... | 11/14/2006 |
| 7103252 | Optical waveguide and fabricating method thereof An optical waveguide used in a WDM optical transmission system are fabricated by the following steps in order to be highly integrated and reduced in size and to have a more preferable design. Namely, a first cladding and a first core are formed on a substrate; at le... | 09/05/2006 |
| 7099540 | Optical coupling device and process for fabrication thereof An optical coupling device has an optical wave-guide varied in difference in specific refractive index between a clad layer and a core layer, and the optical wave-guide serves as a convergent/divergent spot size converter; since reduction in cross section of the cor... | 08/29/2006 |
| 7089766 | Method of forming optical fiber preforms Methods, apparatus and precursors for producing substantially water-free silica soot, preforms and glass. The methods and apparatus make substantially water-free fused silica preforms or glass by removing water as a reaction product, removing water from the atmosphe... | 08/15/2006 |
| 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 |
| 7072552 | Optical fiber with micro-structured cladding An optical fiber having a length can include a core and at least one cladding disposed about the core, where the one cladding can comprise at least first volumetric regions having a first refractive index n1 and second volumetric regions having a second r... | 07/04/2006 |
| 7050691 | Optical waveguide and method of manufacturing the same A method of manufacturing an optical waveguide having a core and a clad. The method includes forming a first clad by applying a resin on a substrate and curing the resin, applying a core material between a recessed mold which has a recess having a shape identical to... | 05/23/2006 |
| 7016582 | Polarized wave holding optical fiber, and method of producing the same Based on an intermediate 20A in which a cladding portion 22 is formed on the outer periphery of a core portion 21, a pair of holes 23 and 24 are provided parallel to the z axis on both sides of the core portion 21 within the... | 03/21/2006 |
| 7006745 | Method for manufacturing an optical waveguide component and an optical waveguide component produced using the method A method for manufacturing an optical waveguide component with several layers stacked on a silicon substrate. The layers include a buffer layer, a first substrate, a guiding layer on the buffer layer and including an optical waveguide, and an outer layer as protecti... | 02/28/2006 |
| 6970632 | Solid type single polarization fiber and apparatus Disclosed is an optical fiber (20) having a centermost laterally-elongated core (30) having a short dimension (a), a long dimension (b) and a first refractive index (n1), a moat (40) surrounding the central laterally-elongated core, t... | 11/29/2005 |
| 6948340 | Method of producing an elliptic core optical fiber Disclosed is a method of producing an elliptic core optical fiber, in which a original preform having a circular core disposed at the center of a circular clad is processed to flatten on its periphery to form a processed preform that is then drawn with heating into ... | 09/27/2005 |
| 6948341 | Cylindrical microlens with an internally reflecting surface and a method of fabrication A fast (high numerical aperture) cylindrical microlens, which includes an internally reflective surface, that functions to deviate the direction of the light that enters the lens from its original propagation direction is employed in optically conditioning laser dio... | 09/27/2005 |
| 6898359 | High index-contrast fiber waveguides and applications High index-contrast fiber waveguides, materials for forming high index-contrast fiber waveguides, and applications of high index-contrast fiber waveguides are disclosed. ... | 05/24/2005 |
| 6779364 | Cladding-pumped optical fiber and methods for fabricating Disclosed is an optical fiber article for receiving pump radiation of a first wavelength for amplifying or generating radiation of a second wavelength. The optical fiber article includes a core for propagating light of the second wavelength. The core has a first ind... | 08/24/2004 |
| 6706154 | Method for fabricating integrated optical components using ultraviolet laser techniques A process for forming an integrated optical device in a substrate, comprising the steps of: providing a substrate having a base index of refraction; providing a UV light beam; focusing the beam on a portion of the substrate in order to form a region of increased ref... | 03/16/2004 |
| 6588235 | Method of centering a fiber core in a multiple-crucible method The invention relates to a method of making an optical fiber and an optical fiber made in accordance with the inventive method. The method includes the step of drawing an optical fiber from a multiple crucible apparatus, wherein one of the crucibles of th... | 07/08/2003 |
| 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 |
| 6580860 | Method for making shaped highly birefringent optical fibers A method for making a highly birefringent optical fiber includes providing a preform with a substantially circular cross section. The preform includes a core region having a substantially circular cross section and a substantially elliptical cladding regi... | 06/17/2003 |
| 6434975 | Method of making an optical fiber by placing different core tablets into a cladding tube An optical fiber having optical characteristics that systematically vary along its length is made by inserting a plurality of cylindrical tablets into a cladding glass tube and overcladding the tube with particles of cladding glass. Each tablet contains a... | 08/20/2002 |
| 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 |
| 6422043 | Method of making an improved multimode optical fiber and fiber made by method Our method of making high bandwidth silica-based multimode optical fiber comprises provision of a non-circular preform, and drawing fiber of chiral structure from the preform. The non-circular preform can be made by maintaining the inside of the tubular p... | 07/23/2002 |
| 6360565 | Method of making polarization retaining fiber A glass preform (10) is drawn into a fiber. Holes (13), running the length of the preform (10), collapse during the drawing, this causes the core (11) to have an elliptical cross section.... | 03/26/2002 |
| 6260387 | Method for fabricating glass preforms for molding optical surfaces in glass elements A method for making preforms for use in a glass lens molding process and molding lenses is disclosed. A glass rod is formed preferably by dipping a bob into a homogeneous melt of a predetermined optical glass, maintaining the temperature of the homogeneou... | 07/17/2001 |
| 6073465 | Method including making grooves in a fiber preform which is drawn to create fiber with improved mode coupling due to a resultant wandering of the core A method of making a fiber having a single mode absorptive core whose position relative to the cross sectional plane of the inner multimode cladding varies along the length of the fiber. A groove or grooves are made in the outer cladding of the preform. W... | 06/13/2000 |
| 5907652 | Article comprising an air-clad optical fiber Optical fiber according to the invention comprises a core, with an inner cladding surrounding the core, and an outer cladding surrounding the inner one. The fiber comprises preform-derived glass. The outer cladding comprises a first outer cladding region ... | 05/25/1999 |
| 5873923 | Method of making a cladding pumped fiber structure A cladding-pumped fiber structure, suitable for use as a laser, provides for efficient clad-to-core energy transfer. The outside interface of the pump-clad is constructed from a rod-shaped preform by local melt-displacement using an open flame.... | 02/23/1999 |
| 5482525 | Method of producing elliptic core type polarization-maintaining optical fiber A method of producing an elliptic core type polarization-maintaining optical fiber comprises the steps of providing a glass rod comprising a cladding glass layer around the periphery of a core glass layer, the cladding glass layer having a softening point... | 01/09/1996 |
| 5411566 | Optical fiber spatial mode converter using periodic core deformation Efficient conversion between the LP01 and the LP11 modes in a two-mode optical fiber is realized in a fiber grating fabricated by forming a series of longitudinally-spaced cuts in the fiber cladding, and then annealing the fiber in t... | 05/02/1995 |
| 5372756 | Method of forming striated light diffuser A light transmitting body (10), (40) has a longitudinal axis (12), (42), and a light radiating surface (14), (46) extending substantially parallel to the axis (12), (42). Where the body is an optical fiber (10), the light radiating surface is the circumfe... | 12/13/1994 |
| 5366530 | Method and apparatus for fabricating an oval cross-sectional optical waveguide The invention concerns the method and apparatus to fabricate an oval cross-sectional optical waveguide which only allows light to propagate in one direction of polarization. The optical waveguide preform for such an optical waveguide according to the modi... | 11/22/1994 |
| 5337380 | Method of limiting coupling losses between monomode optical fibers using a piece of multimode optical fiber The present invention relates to a method of limiting coupling losses between a monomode optical fiber (2) having a mode diameter of Wo, and an optical system (1) having a mode diameter W'o that is different from Wo, said ... | 08/09/1994 |
| 5307245 | Fiber optic backlighting panel and zig-zag process for making same An improved fiber optic backlighting panel provides uniform and increased background illumination in devices, such as rubber keypads, membrane switches, liquid crystal displays, rigid panels or the like. The fiber optic panel comprises a light source and ... | 04/26/1994 |
