| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 41 | METHOD OF THERMALLY DRAWING STRUCTURED SHEETS | US14187969 | 2014-02-24 | US20140242329A1 | 2014-08-28 | Esmaeil Banaei |
| A method of drawing a material into sheet form includes forming a preform comprising at least one material as a large aspect ratio block wherein a first transverse dimension of the preform is much greater than a second transverse dimension substantially perpendicular to the first transverse dimension. A furnace having substantially linearly opposed heating elements one spaced from the other is provided and the heating elements are energized to apply heat to the preform to create a negative thermal gradient from an exterior surface along the first transverse dimension of the preform inward toward a central plane of the preform. The preform is drawn in such a manner that the material substantially maintains its first transverse dimension and deforms across its second transverse dimension. | ||||||
| 42 | METHOD OF CO-DRAWING HYBRID INCOMPATIBLE MATERIALS | US14187492 | 2014-02-24 | US20140238473A1 | 2014-08-28 | Esmaeil Banaei |
| A method of drawing different materials includes forming a first material into a preform body defining at least one channel extending therethrough having a first cross-sectional area. A first element formed of a second material is inserted into the channel and with the preform body creates a preform assembly. The first element has a cross-sectional area that is less than the cross-sectional area of the channel, and the second material has a higher melting temperature than the first material. The preform assembly is heated so that the first material softens and the preform assembly is drawn so that the preform body deforms at a first deformation rate to a smaller cross-sectional area and the first element substantially maintains a constant cross-sectional area throughout the drawing process. Upon completion of the drawing step, the cross-sectional area of the channel is equivalent to the cross-sectional area of the first element. | ||||||
| 43 | FOAMABLE COMPOSITION, FOAM COMPOSITE, METHOD OF MAKING FOAM COMPOSITE AND USE OF FOAM COMPOSITE | US14238784 | 2012-08-20 | US20140228461A1 | 2014-08-14 | Dag Nielsen; Dorte Bartnik Johansson |
| The invention provides a foamable composition comprising a foam pre-cursor and man-made vitreous fibres produced with a cascade spinner or a spinning cup, wherein at least 50% by weight of the man-made vitreous fibres have a length of less than 100 micrometres. | ||||||
| 44 | Active optical fiber and method for fabricating an active optical fiber | US12681480 | 2008-09-29 | US08433168B2 | 2013-04-30 | Valery Filippov; Yuriy Chamorovskiy; Oleg Okhotnikov; Markus Pessa |
| A section of active optical fiber (11) which comprises an active core (1), an inner cladding layer (2) and an outer cladding layer (3). The diameter of said core 1) and the thickness of said inner cladding (2) change gradually along the length of said section of active optical fiber (11). This forms tapered longitudinal profile enabling a continuous mode conversion process along the length of the section of fiber (11). The method for fabricating a section of tapered active optical fiber comprises the steps of fabricating a preform for drawing active optical fiber from said preform, installing said preform into a drawing tower, drawing optical fiber in said drawing tower and altering at least one of the two parameters including the take-off preform speed and the take-up fiber speed during drawing of the optical fiber. | ||||||
| 45 | Composite waveguide | US12897688 | 2010-10-04 | US08098970B2 | 2012-01-17 | Almantas Galvanauskas |
| A composite waveguide includes a central core configured to transmit a plurality of modes and at least one side core helically wound about the central core and configured to be selectively coupled to at least a portion of the plurality of modes in the central core. | ||||||
| 46 | COMPOSITE WAVEGUIDE | US12205078 | 2008-09-05 | US20090003788A1 | 2009-01-01 | Almantas Galvanauskas |
| A composite waveguide includes a central core configured to transmit a plurality of modes and at least one side core helically wound about the central core and configured to be selectively coupled to at least a portion of the plurality of modes in the central core. | ||||||
| 47 | Composite waveguide | US11180224 | 2005-07-13 | US07424193B2 | 2008-09-09 | Almantas Galvanauskas |
| A composite waveguide comprising a central core and at least one side core helically wound about said central core and in optical proximity to said central core. | ||||||
| 48 | Optical fibres with special bending and dispersion properties | US10416023 | 2001-11-12 | US06856742B2 | 2005-02-15 | Jes Broeng; Stig Eigil Barkou Libori; Anders Overgaard Bjarklev |
| A microstructured optical fiber having a specially designed cladding to provide single mode waveguidance and low sensitivity to bending losses. In one aspect the optical fiber has an inner and an outer cladding each comprising elongated features. The inner cladding features have normalized dimensions in the range from 0.35 to 0.50 and the outer cladding features have normalized dimensions in the range from 0.5 to 0.9, where the normalization factor is a typical feature spacing. The fiber is further characterized by a feature spacing of the inner cladding larger than 2.0 micron. In a second aspect, the fiber has a special non-circular and non-equilateral-polygonial outer cross-sectional shape to mechanically ensure bending in predetermined directions that are favourable with respect to low bending losses. The present invention provides fibers, which are less sensitive to macro-bending losses than presently known single-mode fibers with similar sized mode areas, and provides robust, single-mode, large-mode area fibers for long-distance optical transmission and fibers with special dispersion properties. | ||||||
| 49 | Method of centering a fiber core in a multiple-crucible method | US09943250 | 2001-08-30 | US06588235B2 | 2003-07-08 | Jackson P. Trentelman; James G. Anderson; Ernest E. Brand |
| 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 the apparatus has a non-symmetrical orifice (not shown). The inventive fiber has at least a core and cladding. At least one section of the inventive fiber includes an orientation element. | ||||||
| 50 | Internal fiber feature to assist core centering | US09943250 | 2001-08-30 | US20030044143A1 | 2003-03-06 | Jackson P. Trentelman; James G. Anderson; Ernest E. Brand |
| 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 the apparatus has a non-symmetrical orifice. The inventive fiber has at least a core and cladding. At least one section of the inventive fiber includes an orientation element. | ||||||
| 51 | Grooved optical fiber for use with an electrode and a method for making same | US454779 | 1999-12-03 | US6134356A | 2000-10-17 | Thomas D. Monte |
| An optical fiber which modifies the optical signals propagated through the fiber and has refractive properties which change in response to electromagnetic energy. The outer surface of the fiber forms at least one groove extending along a selected length of the fiber for receiving an electrode, which would apply an electrical voltage to the fiber resulting in a change of the refractive properties of the fiber. | ||||||
| 52 | Optical fiber for soliton transmission and method of making | US172937 | 1993-12-27 | US5504829A | 1996-04-02 | Alan F. Evans; Daniel A. Nolan |
| A single-mode optical fiber suitable for the transmission of solitons has a refractive index profile that changes along the length of the fiber to provide a fiber dispersion that monotonically decreases along the fiber from one end thereof to the other. The fiber includes a core of maximum refractive index n.sub.1 and a radius a, surrounded by cladding material having a refractive index n.sub.2 which is less than n.sub.1. The fiber core includes a central region that extends to the longitudinal axis of the fiber and an outer region, the inner and outer regions being separated by a region of depressed refractive index. The inner radius a.sub.1 of the region of depressed refractive index is greater than zero and the maximum radius a.sub.o of the region of depressed refractive index is less than a. The fiber preform can be made by depositing layers of glass particles on an elongated mandrel, the composition of glass particles being varied with respect to longitudinal position along the preform during the deposition of some of the layers. | ||||||
| 53 | Optical fiber having a core with a repeatedly changing constitutional parameter | US895480 | 1992-06-08 | US5267339A | 1993-11-30 | Ryozo Yamauchi; Akira Wada; Tetsuo Nozawa; Daiichirou Tanaka; Tetsuya Sakai |
| The present invention is directed to an optical fiber comprising a core and a cladding layer wherein at least one of the constitutional parameters thereof changes along the longitudinal direction of the optical fiber. In order to present a useful optical fiber wherein the occurrence of a Brillouin scattering is prevented, an optical fiber having altered constitutional parameters is found to be effective. The constitutional parameters mean the parameters which determine the constitution of the optical fiber and is capable of influencing the condition of electromagnetic wave transmitting therethrough such as light or acoustic wave. The constitutional parameters include diameter of the core, index of refraction of the core, diameter of the optical fiber, composition of the glass, residual stress of the core. Some examples are disclosed about their manufacturing process and the test results. Much improvement was measured, especially in the use for a single mode optical fiber. | ||||||
| 54 | Divalent transition-metal-aluminosilicate hydrocarbon conversion catalysts having mazzite-like structures, ECR-23-D (C-2494) | US746264 | 1991-08-15 | US5185137A | 1993-02-09 | David E. W. Vaughan; Karl G. Strohmaier |
| This invention relates to novel zeolitic compositions having one or more transition metals as well as aluminum and silicon in the framework tetrahedral positions. The composition has a mazzite-like structure. The invention also involves a process of preparation in which at least one divalent transition metal is directly synthesized into the product. | ||||||
| 55 | Process for the manufacture of objects with small complex cross-sections | US634862 | 1991-01-02 | US5173097A | 1992-12-22 | Klaus Jansen |
| A need often arises for micro-optical components, such as optical fibres and couplers, and micromechanical components with complex cross-sections which are different at opposite ends or, for directional couplers, at points along the length of the couplers. In the present invention, a soluble material 38 is added to at least one primary preform 35 to make a secondary preform 37 of circular cross-section. The secondary preform is then drawn to reduce the cross-section of the primary preform as required but the cross-sectional shape of the secondary preform is preserved. The soluble material is then removed and then part of the resulting product is heated and plastically deformed to give the required different ends 39 and 40 or other different cross-sections. In another aspect of the invention two soluble materials are used with different solubilities. After the most soluble material has been removed, an operation involving the less soluble material can be carried out, and then the less soluble material is at least partially removed. | ||||||
| 56 | Polarization preserving optical fiber and method of manufacturing | US43565 | 1987-04-28 | US4824455A | 1989-04-25 | Stephen C. Rand; Joseph A. Wysocki |
| An improved polarization preserving birefringent fiber optic member is provided having cross-sectional circular cladding and core members of soft glasses. A metallic coating of an approximately circular configuration, that is offset from the axis of the core and cladding members, is provided with sufficient thickness to provide an anisotropic variation in compressional strain on the core member to create the anisotropy of the refracted index of the core member for preserving polarization characteristics. The optical fiber can be formed by heating a mechanical composite of a core rod and cladding tube, drawing the core and cladding to form a fused fiber and transporting the drawn fiber through a coating bath to provide the variation in thickness. | ||||||
| 57 | Method of making low loss fiber optic coupler | US765652 | 1985-08-15 | US4799949A | 1989-01-24 | Donald B. Keck; Donald R. Lyons; Daniel A. Nolan |
| A low loss fiber optic coupler is fabricated by forming a coupler preform having a plurality of spaced glass cores extending longitudinally through a matrix of glass having a refractive index lower than that of the cores. The preform is heated and stretched to form a glass rod which is then severed into a plurality of units. Heat is applied to the central region of each unit while the ends of the unit are pulled apart to elongate and taper inwardly the heated central region, whereby the cores of the unit are more closely spaced and are of smaller diameter at the central region than they are at the ends of the unit. The unit is then provided with a plurality of optical fibers, one of which extends from each of the cores at the endfaces of the unit. A preferred method of providing the optical fibers involves forming the coupler preform of a matrix glass that is easily dissolved in a solvent. Each of the fiber cores within the matrix is surrounded by a layer of cladding glass that is relatively resistant to dissolving by the solvent. When an end of the unit is immersed in the solvent, the matrix glass dissolves, thereby leaving the unit cores and surrounding solvent-resistant cladding glass protruding from the newly formed endface of the unit. | ||||||
| 58 | Method of making variable section fiber optics | US704518 | 1985-02-22 | US4707172A | 1987-11-17 | Stefano Sottini; Massimo Brenci; Riccardo Falciai; Vera Russo |
| A device for transferring the energy emitted by a high power laser onto a target characterized in that it comprises two guides of optical fibre having step index refraction distribution and at least a plastic material coating. The first guide, stiffly coupled to the laser source, is a variable section fibre with an input face of larger diameter. Guide is the second one by a uniform or variable section fibre with a larger diameter near the output terminal. The two guides are joined by a low leakage optical fibre connector, and between them an adapter can be interposed if the output section of the first guide of fibre does not coincide with the input section of the second guide of fibre. The variable section fibre can be drawn from a pre-moulded or melted material, with the speed controlled by an electronic circuit. Different kinds of pots can be utilized in order to obtain the fibre plastic coating. | ||||||
| 59 | Method and apparatus for making non-circular mineral fibers | US830382 | 1986-02-14 | US4636234A | 1987-01-13 | Larry J. Huey; Paul D. Beuther |
| A method and appartus for making non-circular mineral fibers, and the fibers produced thereby, comprises flowing a stream from a body of molten mineral material through a non-circular orifice, and quenching the mineral material in the stream to form a mineral fiber having a non-circular cross-section. | ||||||
| 60 | Coatings for fiber waveguides | US868043 | 1978-01-09 | US4147407A | 1979-04-03 | Bernard R. Eichenbaum; William B. Gardner |
| Microbending loss is reduced and abrasion protection is afforded for optical fibers by relatively thick polymer coatings characterized in part by a preferred elastic tensile modulus and cold flow property. The coating process uses rapid cooling of a liquid application to promote rapid gelation or solidification and thus achieve uniform coating diameter without beading. Fibers so coated are formed into ribbon structures having definite center-to-center fiber spacing. Preparation of coated fibers or ribbon structures for splicing is achieved by solvent stripping of the coating. | ||||||
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