| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 101 | Optical Fiber Preform With Improved Air/Glass Interface Structure | US12908082 | 2010-10-20 | US20110052128A1 | 2011-03-03 | Ryan Bise; James W. Fleming; George J. Zydzik |
| An optical fiber preform comprising a plurality of longitudinal air holes is subjected to a thermal treatment (i.e., heating), coupled with the application of a compressive force on either end of the heated preform to compress the entire preform structure a predetermined amount. The thermal compression treatment has been found to smooth any roughened glass surfaces and heal microcracks that may have formed during the preform fabrication process, essentially “knitting” the glass material back together and forming a preform of improved quality over the prior art microstructured preforms. | ||||||
| 102 | Polarization-maintaining optical fiber, method of manufacturing polarization-maintaining optical-fiber connecting portion, and polarization-maintaining optical-fiber connecting portion | US12169182 | 2008-07-08 | US07809223B2 | 2010-10-05 | Ryo Miyabe; Yu Mimura |
| A polarization-maintaining optical fiber includes a core region and a cladding region formed around the core region. The cladding region has a refractive index lower than a refractive index of the core region. A refractive index profile of the core region is either one of a step shaped or a concave shaped. The cladding region includes two holes formed in such a manner that a shortest distance from the core region is virtually zero at locations in opposite to each other across the core region. | ||||||
| 103 | Ultra high numerical aperture optical fibers | US12338565 | 2008-12-18 | US07715672B2 | 2010-05-11 | Liang Dong; Xiang Peng; Brian K. Thomas |
| Various embodiments described include optical fiber designs and fabrication processes for ultra high numerical aperture optical fibers (UHNAF) having a numerical aperture (NA) of about 1. Various embodiments of UHNAF may have an NA greater than about 0.7, greater than about 0.8, greater than about 0.9, or greater than about 0.95. Embodiments of UHNAF may have a small core diameter and may have low transmission loss. Embodiments of UHNAF having a sufficiently small core diameter provide single mode operation. Some embodiments have a low V number, for example, less than 2.4 and large dispersion. Some embodiments of UHNAF have extremely large negative dispersion, for example, less than about −300 ps/nm/km in some embodiments. Systems and apparatus using UHNAF are also disclosed. | ||||||
| 104 | OPTICALLY ACTIVE GLASS AND OPTICAL FIBER WITH REDUCED PHOTODARKENING AND METHOD FOR REDUCING PHOTODARKENING | US11773869 | 2007-07-05 | US20090011233A1 | 2009-01-08 | Bertrand MORASSE; Jean-Philippe De Sandro; Eric Gagnon; Stephane Chatigny |
| An optically active glass and an optical fiber comprising such glass, having reduced photodarkening properties are provided. The optically active glass is mainly composed of silica representing from about 50 to 98 mol % of the glass. It also includes at least one active ion, such as a rear-earth ion, which induces a photodarkening effect in optical properties of the glass. Moreover, the glass includes an effective amount of phosphorus oxide providing the photodarkening reducing effect, preferably in an amount of from about 1 to 30 mol %. A method for reducing a photodarkening effect in optical properties of an optically active glass including the step of introducing phosphorus oxide to the glass is also provided. | ||||||
| 105 | POLARIZATION-MAINTAINING OPTICAL FIBER, METHOD OF MANUFACTURING POLARIZATION-MAINTAINING OPTICAL-FIBER CONNECTING PORTION, AND POLARIZATION-MAINTAINING OPTICAL-FIBER CONNECTING PORTION | US12169182 | 2008-07-08 | US20080292251A1 | 2008-11-27 | Ryo Miyabe; Yu Mimura |
| A polarization-maintaining optical fiber includes a core region and a cladding region formed around the core region. The cladding region has a refractive index lower than a refractive index of the core region. A refractive index profile of the core region is either one of a step shaped or a concave shaped. The cladding region includes two holes formed in such a manner that a shortest distance from the core region is virtually zero at locations in opposite to each other across the core region. | ||||||
| 106 | Pure silica core, high birefringence, single polarization optical waveguide | US11614606 | 2006-12-21 | US07437044B2 | 2008-10-14 | Paul E. Sanders; Edward M. Dowd; Andrew S. Kuczma; Trevor W. MacDougall; Brian J. Pike |
| Methods and apparatus provide for birefringent waveguides suitable for optical systems exhibiting polarization dependence such as interferometer sensors including Sagnac interferometric fiber optic gyroscopes (IFOG). The waveguides, for some embodiments, may offer single polarization performance over lengths of about a kilometer or more due to polarization dependent attenuation. According to some embodiments, the waveguides incorporate a pure silica core for resistance to radiation-induced attenuation (RIA). | ||||||
| 107 | Optical fiber and optical fiber coupler, erbium-doped optical fiber amplifier, and optical waveguide using the same | US11276165 | 2006-02-16 | US07406236B2 | 2008-07-29 | 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. | ||||||
| 108 | PURE SILICA CORE, HIGH BIREFRINGENCE, SINGLE POLARIZATION OPTICAL WAVEGUIDE | US11614606 | 2006-12-21 | US20080151254A1 | 2008-06-26 | Paul E. Sanders; Edward M. Dowd; Andrew S. Kuczma; Trevor W. MacDougall; Brian J. Pike |
| Methods and apparatus provide for birefringent waveguides suitable for optical systems exhibiting polarization dependence such as interferometer sensors including Sagnac interferometric fiber optic gyroscopes (IFOG). The waveguides, for some embodiments, may offer single polarization performance over lengths of about a kilometer or more due to polarization dependent attenuation. According to some embodiments, the waveguides incorporate a pure silica core for resistance to radiation-induced attenuation (RIA). | ||||||
| 109 | RARE EARTH DOPED AND LARGE EFFECTIVE AREA OPTICAL FIBERS FOR FIBER LASERS AND AMPLIFIERS | US11693633 | 2007-03-29 | US20080069508A1 | 2008-03-20 | Liang Dong; Xiang Peng |
| Various embodiments described herein include rare earth doped glass compositions that may be used in optical fiber and rods having large core sizes. Such optical fibers and rods may be employed in fiber lasers and amplifiers. The index of refraction of the glass may be substantially uniform and may be close to that of silica in some embodiments. Possible advantages to such features include reduction of formation of additional waveguides within the core, which becomes increasingly a problem with larger core sizes. | ||||||
| 110 | OPTICAL FIBER AND OPTICAL FIBER COUPLER, ERBIUM-DOPED OPTICAL FIBER AMPLIFIER, AND OPTICAL WAVEGUIDE USING THE SAME | US11864375 | 2007-09-28 | US20080025679A1 | 2008-01-31 | 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. | ||||||
| 111 | Nonlinear optical fibre method of its production and use thereof | US10507723 | 2003-03-14 | US07266275B2 | 2007-09-04 | Kim Per Hansen; Jacob Riis Folkenberg |
| 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 region comprising cladding features (10) having a center-to-center spacing, Λ, and a diameter, d, of around 0.4Λ or larger, wherein nc, Λ and d are adapted such that the fiber exhibits zero dispersion wavelength of a fundamental mode in the wavelength range from 1530 nm to 1640 nm; a method of producing such a fiber; and use of such an optical fiber in e.g. an optical communication system, in an optical fiber laser, in an optical fiber amplifier, in an optical fiber Raman amplifier, in a dispersion compensator, in a dispersion and/or dispersion slope compensator. | ||||||
| 112 | Optical fiber with birefringence and large mode field diameter | US10930889 | 2004-08-30 | US07158705B2 | 2007-01-02 | George E Berkey; Xin Chen; Ming-Jun Li; Daniel A Nolan; Ji Wang; William A Wood; Luis A Zenteno |
| 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 (n3), wherein n1>n3 and n0 |
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| 113 | Method for manufacturing photonic crystal fiber | US10543294 | 2004-02-09 | US20060096325A1 | 2006-05-11 | Takaharu Kinoshita; Nobusada Nagae; Akihiko Fukuda |
| A method for manufacturing a photonic crystal fiber (20) including the steps of: arranging a spacer (4) formed of two or more spacer parts in a support tube (3) such that the inner wall surface of the support tube (3) has a substantially regular polygonal cross-sectional shape which allows closest packing of a core rod (2) and a plurality of capillaries (1) or the capillaries (1) only; and forming a preform (15) by packing in a support tube (3) the core rod (2) for forming a solid core and the capillaries (1) for forming a cladding, or by providing a core space for forming a hollow core in a support tube (3) and packing in the support tube (3) a plurality of capillaries (1) for forming the cladding; and drawing the preform (15) into a fiber under heating. | ||||||
| 114 | Optical fiber with birefringence and large mode field diameter | US10930889 | 2004-08-30 | US20060045446A1 | 2006-03-02 | George Berkey; Xin Chen; Ming-Jun Li; Daniel Nolan; Ji Wang; William Wood; Luis Zenteno |
| 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 (n3), wherein n1>n3 and n0 |
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| 115 | Method of producing an elliptic core optical fiber | US10097867 | 2002-03-15 | US06948340B2 | 2005-09-27 | Shuji Okagawa; Hideo Kato; Kenji Yagi |
| 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 an elliptic core optical fiber.According to the invention, the form of the processed preform used for producing an elliptic core optical fiber with desired specific dimensions can be designed using pre-obtained correlations based on the dimensions of the elliptic core optical fiber. If the processed preform designed like this is drawn with heating, an elliptic core optical fiber with desired specific dimensions can be reliably and easily produced. | ||||||
| 116 | Single polarization optical fiber and system and method for producing same | US10864732 | 2004-06-09 | US20040258379A1 | 2004-12-23 | 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. | ||||||
| 117 | Single polarization optical fiber laser and amplifier | US10696928 | 2003-10-30 | US20040258377A1 | 2004-12-23 | George E. Berkey; Ming-Jun Li; Daniel A. Nolan; Donnell T. Walton; Luis A. Zenteno |
| An optically active linear single polarization device includes a linearly birefringent and linearly dichroic optical waveguide (30) for propagating light and having single polarization wavelength range (48). A plurality of active dopants are disposed in a portion (34) of the linearly birefringent and linearly dichroic optical waveguide (30) for providing operation of the waveguide in an operating wavelength range (650) for overlapping the single polarization wavelength range (48). | ||||||
| 118 | Method for producing an optical fibre telecommunications cable with reduced polarization mode dispersion | US10451998 | 2003-11-13 | US20040081412A1 | 2004-04-29 | Franco Cocchini; Andrea Mazzotti; Alfonso Cavallaro; Francesco Di Nola |
| An optical cable for telecommunications having an optical core and a plurality of protecting and reinforcing elements or layers placed around the optical core. The optical core has a central reinforcing element, a polymer layer, a plurality of optical fibres incorporated in the polymer layer and a thin sheath which covers the polymer layer. The optical fibres have an alternating spin about their own axes with a maximum value of at least 4 twists per metre, and a core having a mean ellipticity in the range of 0.25 to 0.55, in such a way that the effects of birefringence of the fibres caused by the cabling process are significantly reduced. | ||||||
| 119 | Polarization retaining fiber | US10014313 | 2001-12-11 | US06587624B2 | 2003-07-01 | William R. Christoff; Paul D. Doud; John W. Gilliland |
| A glass preform is drawn into a fiber. Holes, running the length of the preform, collapse during the drawing, causing the core to have an elliptical cross section. | ||||||
| 120 | Method for making shaped highly birefringent optical fibers | US09515187 | 2000-02-29 | US06580860B1 | 2003-06-17 | Wayne F. Varner |
| 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 region adjacent the core region. The outer surface of the preform is modified to create a shaped preform with a non-circular cross section. The shaped preform is then drawn at a temperature and draw rate sufficient to provide an optical fiber with the non-circular cross section of the shaped preform. | ||||||
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