| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 181 | MULTICORE FIBER AND MANUFACTURING METHOD OF MULTICORE FIBER | US15440228 | 2017-02-23 | US20170160466A1 | 2017-06-08 | Katsunori IMAMURA; Tomohiro GONDA; Ryuichi SUGIZAKI; Taiji SAKAMOTO; Takayoshi MORI; Masaki WADA; Takashi YAMAMOTO; Fumihiko YAMAMOTO |
| A multicore fiber includes a plurality of unit multicore fibers each including: a plurality of core portions; and a clad portion which is formed in an outer circumference of the core portions and has a refractive index lower than a maximum refractive index of the core portions. The plurality of the core portions have substantially same refractive index profile and different group delays at same wavelength in same propagation mode. The core portions of the multicore fiber are configured so that the core portions of the plurality of the unit multicore fibers are connected in cascade, a maximum value of differential group delays between the core portions of the multicore fiber is smaller than a reduced value of a maximum value of differential group delays between the core portions of each unit multicore fiber as a value in terms of a length of the multicore fiber. | ||||||
| 182 | METHOD TO PREVENT CRACKS IN OPTICAL FIBER PREFORMS | US15271610 | 2016-09-21 | US20170101335A1 | 2017-04-13 | Paul Andrew Chludzinski; Dominick Fiordimalva |
| The present disclosure provides optical fiber preforms formed from core canes having large core-clad ratio, intermediate core-cladding assemblies, and methods for making the preforms and core cladding assemblies. The preforms are made with capped core canes. The capping material has a coefficient of thermal expansion less than the coefficient of thermal expansion of the core cane and more closely matched to or lower than the coefficient of thermal expansion of the surrounding cladding monolith in a cane-in-soot process. Presence of the cap reduces stresses that arise from differential thermal expansion of the core cane and cladding materials and leads to preforms having low defect concentration and low probability of failure during subsequent thermal processing steps. | ||||||
| 183 | METHOD OF MANUFACTURING OPTICAL FIBER PREFORM AND OPTICAL FIBER PREFORM | US15384853 | 2016-12-20 | US20170101334A1 | 2017-04-13 | Tetsuya HARUNA; Masaaki HIRANO; Yoshiaki TAMURA; Yuki KAWAGUCHI |
| The present invention relates to a method of manufacturing an optical fiber preform for obtaining an optical fiber with low transmission loss. A core preform included in the optical fiber preform comprises three or more core portions, which are each produced by a rod-in-collapse method, and in which both their alkali metal element concentration and chlorine concentration are independently controlled. In two or more manufacturing steps of the manufacturing steps for each of the three or more core portions, an alkali metal element is added. As a result, the mean alkali metal element concentration in the whole core preform is controlled to 7 atomic ppm or more and 70 atomic ppm or less. | ||||||
| 184 | Preform manufacturing method | US14378738 | 2014-02-20 | US09604868B2 | 2017-03-28 | Tetsuya Nakanishi; Toshiki Taru |
| A preform manufacturing method of the present invention has a hole forming step of forming a plurality of holes in a glass body to produce a glass pipe, and a heating integration step of heating the glass pipe with core rods including core portions being inserted in the respective holes, thereby to implement integration of the core rods and the glass pipe. In the hole forming step, a peripheral hole out of the holes to be formed in the glass body is formed at a position determined in consideration of positional variation of the core portion before and after the integration. | ||||||
| 185 | SPUN ROUND CORE FIBER | US15115392 | 2015-01-29 | US20170010410A1 | 2017-01-12 | Joona Koponen; Changgeng Ye; Ossi Kimmelma |
| Optical waveguide cores having refractive index profiles that vary angularly about a propagation axis of the core can provide single-mode operation with larger core diameters than conventional waveguides. An optical waveguide includes a core that extends along a propagation axis and has a refractive index profile that varies angularly about the propagation axis. The optical waveguide also includes a cladding disposed about the core and extending along the propagation axis. The refractive index profile of the core varies angularly along a length of the propagation axis. | ||||||
| 186 | NON-CIRCULAR MULTICORE FIBER AND METHOD OF MANUFACTURE | US15137336 | 2016-04-25 | US20160349447A1 | 2016-12-01 | Douglas Llewellyn Butler; Daniel Warren Hawtof; Rick Charles Layton, III; Gautam Meda; John Stone, III; Pushkar Tandon |
| A multicore fiber is provided. The multicore fiber includes a plurality of cores spaced apart from one another, and a cladding surrounding the plurality of cores and defining a substantially rectangular or cross-sectional shape having four corners. Each corner has a radius of curvature of less than 1000 microns. The multicore fiber may be drawn from a preform in a circular draw furnace in which a ratio of a maximum cross-sectional dimension of the preform to an inside diameter of the preform to an inside diameter of the draw furnace is greater than 0.60. The multicore fiber may have maxima reference surface. | ||||||
| 187 | Multicore optical fiber and optical module | US14945570 | 2015-11-19 | US09482814B2 | 2016-11-01 | Tetsuya Nakanishi; Tetsuya Hayashi; Takashi Sasaki; Eisuke Sasaoka |
| The present invention relates to an MCF with a structure for enabling an alignment work with higher accuracy. The MCF has a plurality of cores and a cladding. An outer peripheral shape of the cladding in a cross section of the MCF is comprised of a circumferential portion forming a circumference coincident with an outer periphery of the MCF, and a cut portion. The cut portion has a bottom portion and two contact portions provided on both sides of the bottom portion and projecting more than the bottom portion. When a side face of the MCF is viewed, the two contact portions have flattened faces and the flattened faces of the two contact portions extend along a longitudinal direction of the MCF with the bottom portion in between. | ||||||
| 188 | Optical waveguide and optical fiber transmission system | US14730461 | 2015-06-04 | US09354387B2 | 2016-05-31 | Tetsuya Hayashi |
| In an optical waveguide having plural cores including a pair of adjacent cores with an identical core structure, a minimum value D of center-center distance between the adjacent cores is 15 μm to 60 μm, each of the plural cores has a bent portion fixed in a radius of curvature Rb of not more than 7 mm, a bend supplementary angle of the bent portion is 58° to 90°, a height of the optical waveguide is defined as a height of not more than 10 mm, and a crosstalk of the adjacent cores is not more than 0.01. | ||||||
| 189 | Optical fiber article for handling higher power and method of fabricating or using | US13935077 | 2013-07-03 | US09352996B2 | 2016-05-31 | Douglas Guertin; Nils Jacobson; Kanishka Tankala; Adrian Carter |
| An optical fiber preform, and method for fabricating, having a first core, a second core spaced from the first core and first and second regions, the first region having an outer perimeter having a first substantially straight length and the second region having an outer perimeter having a second substantially straight length facing the first straight length. One of the regions can comprise the first core and the other comprises the second core. The preform can be drawn with rotation to provide a fiber wherein a first core of the fiber is multimode at a selected wavelength of operation and a second core of the fiber is spaced from and winds around the first core and has a selected longitudinal pitch. The second core of the fiber can couple to a higher order mode of the first core and increase the attenuation thereof relative to the fundamental mode of the first core. | ||||||
| 190 | MULTICORE OPTICAL FIBER AND OPTICAL MODULE | US14945570 | 2015-11-19 | US20160070058A1 | 2016-03-10 | Tetsuya NAKANISHI; Tetsuya HAYASHI; Takashi SASAKI; Eisuke SASAOKA |
| The present invention relates to an MCF with a structure for enabling an alignment work with higher accuracy. The MCF has a plurality of cores and a cladding. An outer peripheral shape of the cladding in a cross section of the MCF is comprised of a circumferential portion forming a circumference coincident with an outer periphery of the MCF, and a cut portion. The cut portion has a bottom portion and two contact portions provided on both sides of the bottom portion and projecting more than the bottom portion. When a side face of the MCF is viewed, the two contact portions have flattened faces and the flattened faces of the two contact portions extend along a longitudinal direction of the MCF with the bottom portion in between. | ||||||
| 191 | OPTICAL WAVEGUIDE AND OPTICAL FIBER TRANSMISSION SYSTEM | US14730461 | 2015-06-04 | US20150268414A1 | 2015-09-24 | Tetsuya HAYASHI |
| In an optical waveguide having plural cores including a pair of adjacent cores with an identical core structure, a minimum value D of center-center distance between the adjacent cores is 15 μm to 60 μm, each of the plural cores has a bent portion fixed in a radius of curvature Rb of not more than 7 mm, a bend supplementary angle of the bent portion is 58° to 90°, a height of the optical waveguide is defined as a height of not more than 10 mm, and a crosstalk of the adjacent cores is not more than 0.01. | ||||||
| 192 | OPTOGENETIC PROBE | US14409390 | 2013-06-18 | US20150141844A1 | 2015-05-21 | Jean-François Viens; Jean-François Gravel; Younès Messaddeq; Yannick Ledemi; Maxime Rioux |
| An optogenetic probe, an optogenetic system, and a method for fabricating an optogenetic probe are provided. The optogenetic probe has a proximal and a distal end, and includes an elongated body made of a body glass material and extending longitudinally between the proximal and distal ends. The optogenetic probe also includes at least one optical channel, each including an optical channel glass material having a refractive index larger than a refractive index of the body glass material, so as to guide light therealong. The optogenetic probes also includes at least one electrical channel, each including an electrical channel structure having an electrical conductivity larger than the electrical conductivity of the body glass material, so as to conduct electricity therealong. The optogenetic probe further includes at least one fluidic channel, each adapted for transporting fluid therealong. Each optical, electrical and fluidic channel extends longitudinally within the elongated body. | ||||||
| 193 | METHOD OF PRODUCING PREFORM FOR COUPLED MULTI-CORE FIBER, METHOD OF PRODUCING COUPLED MULTI-CORE FIBER, AND COUPLED MULTI-CORE FIBER | US14603488 | 2015-01-23 | US20150139600A1 | 2015-05-21 | Shoji Tanigawa; Katsuhiro Takenaga |
| Provided is a method of producing a preform 10P for a coupled multi-core fiber including: an arranging process P1 for arranging a plurality of core glass bodies 11R and a clad glass body 12R in such a way that the plurality of core glass bodies 11R are surrounded by the clad glass body 12R; and a collapsing process P2 for collapsing a gap between the core glass bodies 11R and the clad glass body 12R, wherein the respective core glass bodies 11R have outer regions 16 having a predetermined thickness from the periphery surfaces and made of silica glass undoped with germanium, and the clad glass body 12R is made of silica glass having a refractive index lower than a refractive index of the outer regions of the core glass bodies 11R. | ||||||
| 194 | MULTICORE FIBER | US14541355 | 2014-11-14 | US20150139597A1 | 2015-05-21 | Itaru Ishida; Shoichiro Matsuo |
| A multicore fiber includes a plurality of cores and a cladding surrounding the plurality of cores. The plurality of cores is arranged and disposed on a linear line passed through the center of the cladding. A pair of cores is included. The pair of the cores is located adjacent to each other, and has different core diameters in a first direction in which the plurality of cores is arranged on the linear line. A ratio of a core diameter in the first direction to a core diameter in a second direction orthogonal to the first direction is different between the pair of the cores. | ||||||
| 195 | Optical fiber preform, method for producing optical fiber, and optical fiber | US14127266 | 2012-11-16 | US09036972B2 | 2015-05-19 | Yoshiaki Tamura; Tetsuya Haruna; Masaaki Hirano |
| An easily producible optical fiber preform which is drawn to an optical fiber having a core containing a sufficient concentration of alkali metal is provided. An optical fiber preform 10 is composed of silica-based glass and includes a core portion 20 and a cladding portion 30. The core portion 20 includes a first core portion 21 including a central axis and a second core portion 22 disposed on the perimeter of the first core portion 21. The cladding portion 30 includes a first cladding portion 31 disposed on the perimeter of the second core portion 22 and a second cladding portion 32 disposed on the perimeter of the first cladding portion 31. The core portion 20 contains an alkali metal at an average concentration of 5 atomic ppm or more. The concentration of the OH group in the perimeter portion of the first cladding portion 31 is 200 mol ppm or more. | ||||||
| 196 | METHOD OF MANUFACTURING PREFORM FOR MULTICORE FIBER AND METHOD OF MANUFACTURING MULTICORE FIBER | US14170873 | 2014-02-03 | US20140216109A1 | 2014-08-07 | Itaru Ishida; Shoichiro Matsuo |
| A plurality of clad rods, and a clad tube, an arrangement process for arranging the plurality of core rods and the plurality of clad rods in a tube of the clad tube, in a state in which distances between center axes of the adjacent core rods become equal to each other and a state in which parts of outer circumferential surfaces in the adjacent rods contact, and an integration process for integrating the clad tube and the plurality of core rods and the plurality of clad rods arranged in the tube, wherein a ratio of a total cross-sectional area of a direction orthogonal to a length direction in the plurality of core rods and the plurality of clad rods with respect to an internal cross-sectional area of the tube of a direction orthogonal to a length direction in the clad tube is 0.84 or more. | ||||||
| 197 | Method for making large diameter multicore optical waveguide | US11459854 | 2006-07-25 | US08769995B2 | 2014-07-08 | Edward M. Dowd; Joseph J. Baraglia; Andrew S. Kuczma; Brian J. Pike; Thomas W. Engel; Martin A. Putnam |
| 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 reducing the bulk modulus of compressibility and maintaining the anti-buckling strength of the large diameter optical waveguide. The method features the steps of: assembling a preform for drawing a multicore large diameter optical waveguide having a cross-section of at least about 0.3 millimeters, by providing an outer tube having a cross-section of at least about 0.3 millimeters and arranging two or more preform elements in relation to the outer tube; heating the preform; and drawing the large diameter optical waveguide from the heated preform. In one embodiment, the method also includes the step of arranging at least one inner tube inside the outer tube. | ||||||
| 198 | Microstructured optical fibers and manufacturing methods thereof | US11913417 | 2006-05-03 | US08731356B2 | 2014-05-20 | Nasser Peyghambarian; Axel Schulzgen; Valery Temyanko |
| Optical devices and a method for manufacturing these devices. One optical device includes a core region having a first medium of a first refractive index n1, and includes a cladding region exterior to the core region. The cladding region includes a second medium having a second refractive index n2 higher than the first refractive index n1. The cladding region further includes a third medium having a third refractive index n3 lower than the first refractive index n1. The third medium is dispersed in the second medium to form a plurality of microstructures in the cladding region. Another optical device includes a plurality of core regions including at least one core having a doped first medium, and includes a cladding region exterior to the plurality of core regions. The core regions and the cladding region include a phosphate glass. | ||||||
| 199 | LOW-LOSS OPTICAL FIBER OVER WIDE WAVELENGTH RANGE AND METHOD OF MANUFACTURING THE SAME | US13890749 | 2013-05-09 | US20130302001A1 | 2013-11-14 | Kazuhiko AIKAWA; Masahiro ASANO; Kazuyuki HAYASHI; Masami MIYACHI; Manabu KUDOH |
| A low-loss optical fiber over wide wavelength range includes a transmission loss of less than or equal to 40 dB/km in a whole wavelength range of 400-1400 nm, and being manufactured by drawing an optical fiber preform including a core composed of a silica glass having a hydroxyl-group concentration of less than or equal to 1 ppm and a cladding composed of a silica glass having a fluorine concentration of more than or equal to 3.2 wt %. | ||||||
| 200 | Methods for Making Active Laser Fibers | US13787084 | 2013-03-06 | US20130239623A1 | 2013-09-19 | Jurgen Rosenkranz; Wolfgang Heammerle; Lothar Brehm; Katrin Roessner; Robert Hanf |
| Methods for making active laser fibers include the production of an optical fiber with disturbed (or deviated) cylindrical symmetry on the glass surface of the fiber. The methods include a preform containing a central core made of glass. In one embodiment, the preform is circular and surrounded by additional glass rods and an outer glass jacket tube. In a first alternative embodiment, this preform is merged during fiber drawing. In a second alternative embodiment, the preform merged in a process forming a compact glass body with disturbed cylindrical symmetry. This compact preform is drawn into a fiber under conditions maintaining the disturbed cylindrical symmetry. | ||||||
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