| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | Rare earth doped optical fiber | US11540099 | 2006-09-29 | US20080080823A1 | 2008-04-03 | Stuart Gray; Donnell Thaddeus Walton; Ji Wang; Luis Alberto Zenteno |
| An optical fiber including: (i) a silica based, Yb doped core having a first index of refraction n1, said core comprising more than 1 wt % of Yb, said core having less than 5 dB/km loss at a wavelength situated between 1150 nm and 1350 nm and less than 20 dB/km loss at the wavelength of 1380 nm and slope efficiency of over 0.8; and (ii) at least one silica based cladding surrounding the core and having a second index of refraction n2, such that n1>n2. | ||||||
| 62 | Optical fiber and optical fiber coupler, erbium-doped optical fiber amplifier, and optical waveguide using the same | US11028756 | 2005-01-05 | US07346258B2 | 2008-03-18 | Masashi Ikeda; Masakazu Nakayama; Kuniharu Himeno; Masaaki Ohtsuka; Masakazu Oohashi; Daiichiro Tanaka |
| An optical fiber that includes a core containing a first concentration of germanium, an inner cladding arranged on the core, the inner cladding containing a second concentration of germanium and having a first diffusion coefficient, and an outer cladding arranged on the inner cladding, the outer cladding having a second diffusion coefficient, where the first diffusion coefficient is larger than the second diffusion coefficient, and where the first concentration of germanium is about 200% or more of the second concentration of germanium. An optical fiber constructed in this manner can be spliced with an optical fiber having a different MFD, such as a single-mode optical fiber or an erbium-doped optical fiber, with low splice loss and a sufficient splicing strength. | ||||||
| 63 | Single polarization optical fiber and system and method for producing same | US10864732 | 2004-06-09 | US07194172B2 | 2007-03-20 | George E. Berkey; Xin Chen; Ming-Jun Li; Daniel A. Nolan; William A. Wood |
| An optical fiber that includes a central core having a maximum dimension (A) greater than a minimum dimension (B), preferably with an aspect ratio greater than 1.5, the fiber having at least one air hole positioned on opposite sides of the central core and extending along the fiber's length wherein the fiber supports a single polarization mode within an operating wavelength band. The fiber may be coupled to optical components in systems to provide single polarization in the band. A method for manufacturing the fiber is also provided. | ||||||
| 64 | Polarization controlling optical fiber preform and preform fabrication methods | US11364122 | 2006-02-28 | US20060191295A1 | 2006-08-31 | Edward Dowd; Paul Sanders |
| Methods to fabricate an optical preform for draw into Polarization Maintaining (PM) or Polarizing (PZ) optical fiber are provided. The methods involve assembly of pre-shaped and pieced together bulk glass elements into preforms (“assembled preforms”) for simultaneous fusing and drawing into optical fiber. These preforms form a stress-induced birefringent optical core when drawn to fiber. | ||||||
| 65 | Optical fiber and optical fiber coupler, erbium-doped optical fiber amplifier, and optical waveguide using the same | US11028756 | 2005-01-05 | US20050135762A1 | 2005-06-23 | Masashi Ikeda; Masakazu Nakayama; Kuniharu Himeno; Masaaki Ohtsuka; Masakazu Oohashi; Daiichiro Tanaka |
| An optical fiber that includes a core containing a first concentration of germanium, an inner cladding arranged on the core, the inner cladding containing a second concentration of germanium and having a first diffusion coefficient, and an outer cladding arranged on the inner cladding, the outer cladding having a second diffusion coefficient, where the first diffusion coefficient is larger than the second diffusion coefficient, and where the first concentration of germanium is about 200% or more of the second concentration of germanium. An optical fiber constructed in this manner can be spliced with an optical fiber having a different MFD, such as a single-mode optical fiber or an erbium-doped optical fiber, with low splice loss and a sufficient splicing strength. | ||||||
| 66 | Polarization retaining photonic crystal fiber | US10501983 | 2003-01-23 | US20050084223A1 | 2005-04-21 | Masatoshi Tanaka; Shinya Yamadori; Moriyuki Fujita; Satoki Kawanishi; Kazunori Suzuki; Hirokazu Kubota |
| A polarization-maintaining photonic crystal fiber 10 includes six thin holes 4a and 4b adjacent to a core 1. Among these holes 4a and 4b, a pair of holes 4b at opposite sides of the core 1 have a diameter greater than that of the other four thin holes 4a, and therefore, the polarization-maintaining photonic crystal fiber 10 has polarization-maintaining ability. An overclad layer 3 exists around the clad layer 2 which includes a large number of thin holes 4a and 4b around the core 1. The overclad layer 3 includes a pair of marking portions 5 at opposite sides of the core 1. The marking portions 5 are holes which can be seen at positions different from the clad layer 2 when the fiber 10 is viewed from a position right above the fiber 10 in the drawing. In this way, the direction of the polarization plane of the polarization-maintaining photonic crystal fiber 10 is identified. | ||||||
| 67 | Preform for producing an optical fiber and method therefor | US10603533 | 2003-06-25 | US20040065118A1 | 2004-04-08 | Dahv A. V. Kliner; Jeffery P. Koplow |
| The present invention provides a simple method for fabricating fiber-optic glass preforms having complex refractive index configurations and/or dopant distributions in a radial direction with a high degree of accuracy and precision. The method teaches bundling together a plurality of glass rods of specific physical, chemical, or optical properties and wherein the rod bundle is fused in a manner that maintains the cross-sectional composition and refractive-index profiles established by the position of the rods. | ||||||
| 68 | Method of bundling rods so as to form an optical fiber preform | US09778329 | 2001-02-06 | US06711918B1 | 2004-03-30 | Dahv A. V. Kliner; Jeffery P. Koplow |
| The present invention provides a simple method for fabricating fiber-optic glass preforms having complex refractive index configurations and/or dopant distributions in a radial direction with a high degree of accuracy and precision. The method teaches bundling together a plurality of glass rods of specific physical, chemical, or optical properties and wherein the rod bundle is fused in a manner that maintains the cross-sectional composition and refractive-index profiles established by the position of the rods. | ||||||
| 69 | Methods for fabricating optical fibers and optical fiber preforms | US10232099 | 2002-08-29 | US20040050110A1 | 2004-03-18 | George E. Berkey; Dennis W. Buckley; Michael T. Gallagher; Daniel W. Hawtof; Carlton M. Truesdale; Natesan Venkataraman |
| The present invention provides methods for fabricating optical fiber preforms and optical fibers. According to one embodiment of the invention, a method for making an optical fiber preform includes the steps of providing at least one sacrificial rod having an outside surface; forming a material on the outside surface of each sacrificial rod to yield a structured body, the structured body including a structured material in substantial contact with the at least one sacrificial rod; removing each sacrificial rod from the structured body; and including the structured body in the optical fiber preform. The preform may be drawn into an optical fiber. The methods of the present invention are especially useful in the fabrication of microstructured optical fibers. | ||||||
| 70 | Photonic crystal fibers | US09890802 | 2001-11-08 | US06631234B1 | 2003-10-07 | Philip St. John Russell; Timothy Adam Birks; Jonathan Cave Knight |
| A photonic crystal fiber including a plurality of longitudinal holes (220), in which at least some of the holes have a different cross-sectional area in a first region (200) of the fiber, that region having been heat-treated after fabrication of the fiber, from their cross-sectional area in a second region of the fiber (190), wherein the optical properties of the fiber in the heat-treated region (200) are altered by virtue of the change in cross-sectional area of holes (230) in that region (200). | ||||||
| 71 | Method for making V-shaped highly birefringent optical fibers | US09515448 | 2000-02-29 | US06459838B1 | 2002-10-01 | Wayne F. Varner |
| A method for making a V-shaped highly birefringent optical fiber includes providing a preform with a substantially circular cross section. The outer surface of preform is modified to create a shaped preform with a substantially V-shaped cross section. The shaped preform is then drawn at a temperature and draw rate sufficient to provide an optical fiber with the V-shaped cross section of the shaped preform. | ||||||
| 72 | Polarization retaining fiber | US10014313 | 2001-12-11 | US20020061402A1 | 2002-05-23 | William R. Christoff; Paul D. Doud; John W. Gilliland |
| PURPOSE: To form a polarization maintaining optical fiber which is long-sized and improves remarkably a polarization characteristic by forming a core of a circular or elliptical shape and forming a refractive index distribution of said core into a graded type shape. CONSTITUTION: Holes 3nulla, 3nullb for, stressing base materials are opened to a quartz bar 5 having 50 mm diameter and 150 mm length in the positions symmetrical with the center of the quartz bar and a hole 4null for a core base material is opened at the center of the bar 5, by means of an ultrasonic drill, then stressing base materials 3a, 3b and a fiber core base material 4 are inserted into these holes. The stressing base materials consist of SiO |
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| 73 | Method of making polarization retaining fiber | US09194173 | 1998-11-20 | US06360565B1 | 2002-03-26 | William R. Christoff; Paul D. Doud; John W. Gilliland |
| 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. | ||||||
| 74 | Cladding-pumped fiber structures | US976003 | 1997-11-21 | US5949941A | 1999-09-07 | David John DiGiovanni |
| A cladding-pumped fiber structure is disclosed in which mode mixing of pump light injected into the fiber is induced by index modulation. In one embodiment, the index modulation is created by a stress-inducing region disposed in the cladding which simultaneously maintains the polarization within the core to produce a polarization-maintaining fiber useful for multi-mode and laser applications. | ||||||
| 75 | Grooved optical fiber for use with an electrode and a method for making same | US611172 | 1996-03-05 | US5768462A | 1998-06-16 | 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. | ||||||
| 76 | Optical fiber sensor and a manufacturing process for making same | US966403 | 1992-10-26 | US5309540A | 1994-05-03 | Marc Turpin; Marie-Noelle Charasse; Jean-Pierre Le Pesant |
| The invention is a hollow fiber with, over the full length of the fiber and between each fiber channel (3, 4) and the core, at least one stress zone (5, 6) to create an anisotropic stress distribution which subjects the fiber core to a tensile stress. The cable design is advantageous in that it is possible to control the sign of the fiber intrinsic birefringence. The cable is thus advantageous for use as a pressure sensor or pressure transducer. | ||||||
| 77 | Method of making polarization retaining fiber | US560090 | 1990-07-30 | US5180410A | 1993-01-19 | George E. Berkey |
| A method of making an optical fiber having an oblong core comprising the steps of depositing layers of core glass particles and cladding glass particles on an enlarged mandrel, removing the mandrel to form a tubular porous preform, consolidating the porous preform to form a dense glass preform, evacuating the central hole of the dense glass preform while stretching that preform to collapse the central hole thereof and form a flattened rod, applying cladding material to the rod, and drawing the resultant composite to form an optical fiber. To facilitate the flat collapse of the central hole of the dense glass preform and to cause the core to have a large aspect ratio, the inside diameter-to-outside diameter ratio of the dense glass preform should be within the range of 0.3 to 0.9. For preferred core and cladding glasses, this ratio should be between 0.5 and 0.6. Also, the mandrel diameter should be at least 12 mm, and it is preferably between 25 mm and 50 mm. | ||||||
| 78 | Polarization-maintaining single-mode optical fibre and method of making same | US565824 | 1990-08-10 | US5067793A | 1991-11-26 | Peter K. Bachmann; Giok D. Khoe; Cathal J. Mahon; Hans-Jurgen Lydtin |
| An optical fibre of the single-mode type in which light travels in one polarization mode is formed from a single-mode quadruple-clad fibre, in which the dimension of the light-transmitting part of the fibre in a first direction perpendicular to the axis of the fibre differs from the dimension of the light-transmitting part in a second direction perpendicular to the axis of the fibre and the first direction. | ||||||
| 79 | Method of manufacturing a preform for asymmetrical optical fiber | US297971 | 1989-01-17 | US4935045A | 1990-06-19 | Ryozo Yamauchi; Matsuhiro Miyamoto; Tatsuyuki Oohashi; Osamu Fukuda |
| Disclosed is a method of manufacturing a preform for an asymmetric optical fiber which comprises the steps of (a) fixing plural transparent glass rods involving at least one core-mother rod functioning as the core in said optical fiber in parallel relationship, (b) depositing glass soot around an assembly of said plural parallel fixed glass rods, thereby providing a single porous cladding bearing the predetermined shape, and (c) vitrifying the porous cladding by thermal fusion, thereby providing the entirely integral transparent preform. The above method does not involve any process of perforating a drilled-pore which is needed inevitably in conventional method. Therefore, it is possible to obtain a long preform with high dimensional precision, and to fabricate the optical fiber with low transmission loss. | ||||||
| 80 | Polarization preserving optical fiber and method of manufacturing | US300386 | 1989-01-23 | US4904052A | 1990-02-27 | 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. | ||||||
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