JP2012162409A - 光ファイバ母材製造方法 - Google Patents
光ファイバ母材製造方法 Download PDFInfo
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- JP2012162409A JP2012162409A JP2011021995A JP2011021995A JP2012162409A JP 2012162409 A JP2012162409 A JP 2012162409A JP 2011021995 A JP2011021995 A JP 2011021995A JP 2011021995 A JP2011021995 A JP 2011021995A JP 2012162409 A JP2012162409 A JP 2012162409A
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- optical fiber
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- 239000013307 optical fiber Substances 0.000 title claims abstract description 75
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 37
- 239000011521 glass Substances 0.000 claims abstract description 116
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 45
- 229910052783 alkali metal Inorganic materials 0.000 claims abstract description 32
- 150000001340 alkali metals Chemical class 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 12
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 5
- 238000007711 solidification Methods 0.000 claims description 25
- 230000008023 solidification Effects 0.000 claims description 25
- 238000005253 cladding Methods 0.000 claims description 21
- 230000003287 optical effect Effects 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 15
- 239000007787 solid Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 19
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 abstract 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract 1
- 229910052801 chlorine Inorganic materials 0.000 abstract 1
- 239000000460 chlorine Substances 0.000 abstract 1
- 229910052731 fluorine Inorganic materials 0.000 abstract 1
- 239000011737 fluorine Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 28
- 239000002994 raw material Substances 0.000 description 14
- 238000002425 crystallisation Methods 0.000 description 12
- 230000008025 crystallization Effects 0.000 description 12
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 11
- 229910052700 potassium Inorganic materials 0.000 description 11
- 239000011591 potassium Substances 0.000 description 11
- 238000005530 etching Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 9
- 239000013078 crystal Substances 0.000 description 6
- 239000003513 alkali Substances 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- 235000012239 silicon dioxide Nutrition 0.000 description 5
- 229910052723 transition metal Inorganic materials 0.000 description 5
- 150000003624 transition metals Chemical class 0.000 description 5
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 4
- 239000010453 quartz Substances 0.000 description 4
- 229910000272 alkali metal oxide Inorganic materials 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 230000002194 synthesizing effect Effects 0.000 description 3
- 239000000654 additive Substances 0.000 description 2
- 230000000996 additive effect Effects 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- -1 alkali metal salt Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910052792 caesium Inorganic materials 0.000 description 1
- TVFDJXOCXUVLDH-UHFFFAOYSA-N caesium atom Chemical compound [Cs] TVFDJXOCXUVLDH-UHFFFAOYSA-N 0.000 description 1
- 239000012159 carrier gas Substances 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 229910052681 coesite Inorganic materials 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 229910052906 cristobalite Inorganic materials 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 229910052701 rubidium Inorganic materials 0.000 description 1
- IGLNJRXAVVLDKE-UHFFFAOYSA-N rubidium atom Chemical compound [Rb] IGLNJRXAVVLDKE-UHFFFAOYSA-N 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 239000004071 soot Substances 0.000 description 1
- 229910052682 stishovite Inorganic materials 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 229910052905 tridymite Inorganic materials 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 230000002087 whitening effect Effects 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01861—Means for changing or stabilising the diameter or form of tubes or rods
- C03B37/01869—Collapsing
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01228—Removal of preform material
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
- C03B37/01861—Means for changing or stabilising the diameter or form of tubes or rods
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/07—Impurity concentration specified
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/07—Impurity concentration specified
- C03B2201/075—Hydroxyl ion (OH)
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/08—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant
- C03B2201/12—Doped silica-based glasses doped with boron or fluorine or other refractive index decreasing dopant doped with fluorine
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/20—Doped silica-based glasses doped with non-metals other than boron or fluorine
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2201/00—Type of glass produced
- C03B2201/06—Doped silica-based glasses
- C03B2201/30—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi
- C03B2201/50—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with alkali metals
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Glass Compositions (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
【解決手段】本発明の光ファイバ母材製造方法は、少なくともアルカリ金属元素が内表面に添加された石英系ガラスからなるガラスパイプの長さ軸方向に熱源を連続的に移動させてガラスパイプを加熱して中実化することで、光ファイバのコア部またはコアの一部となる第一のガラスロッドを作製する中実化工程を備え、ガラスパイプは、アルカリ金属元素の最高濃度が500〜20,000 atomic ppm であり、Cl元素の最高濃度が0〜1,000 atomic ppm であり、F元素の最高濃度が0〜10,000 atomic ppmであり、中実化工程において、ガラスパイプの外表面の最高温度を2000〜2250℃とし、熱源の移動速さを30mm/min以上100mm/min以下とすることを特徴とする。
【選択図】図1
Description
Claims (7)
- コア部およびクラッド部を含む石英系ガラスからなる光ファイバ母材を製造する方法であって、
少なくともアルカリ金属元素が内表面に添加された石英系ガラスからなるガラスパイプの長さ軸方向に熱源を連続的に移動させて前記ガラスパイプを加熱して中実化することで、光ファイバのコア部またはコアの一部となる第一のガラスロッドを作製する中実化工程を備え、
前記ガラスパイプは、アルカリ金属元素の最高濃度が500〜20,000 atomic ppm であり、Cl元素の最高濃度が0〜1,000 atomic ppm であり、F元素の最高濃度が0〜10,000 atomic ppmであり、
前記中実化工程において、前記ガラスパイプの外表面の最高温度を2000〜2250℃とし、前記熱源の移動速さを30mm/min以上100mm/min以下とする、
ことを特徴とする光ファイバ母材製造方法。 - 前記中実化工程において、前記ガラスパイプの内部の圧力を前記ガラスパイプの外部の圧力より90kPa以上低くする、ことを特徴とする請求項1に記載の光ファイバ母材製造方法。
- 前記中実化工程において作製された前記第一のガラスロッドの外周を研削して、前記第一のガラスロッドの断面を実質的に真円とする第一外周研削工程を備える、ことを特徴とする請求項1に記載の光ファイバ母材製造方法。
- 純粋石英ガラスの屈折率を基準として前記第一のガラスロッドの比屈折率差の最大値が−0.1〜+0.1%であり、
純粋石英ガラスの屈折率を基準とする比屈折率差の最小値が−0.2〜−0.5%である光学クラッド部または光学クラッド部の一部を前記第一のガラスロッドの周囲に形成するクラッド部形成工程を備える、
ことを特徴とする請求項1〜3に記載の光ファイバ母材製造方法。 - 前記中実化工程において作製された前記第一のガラスロッドの周囲に、Cl元素の濃度が1,000atomic ppmから1,5000atomic ppm以下の濃度で添加された石英ガラスを設けることで、光ファイバのコア部またはコアの一部となる第二のガラスロッドを作製するコア部拡径工程を備える、ことを特徴とする請求項1〜4に記載の光ファイバ母材製造方法。
- 前記コア部拡径工程において作製された前記第二のガラスロッドの外周を研削して、前記第二のガラスロッドの断面を実質的に真円とする第二外周研削工程を備える、ことを特徴とする請求項5に記載の光ファイバ母材製造方法。
- 純粋石英ガラスの屈折率を基準として前記第二のガラスロッドの比屈折率差の最大値が−0.1〜+0.1%であり、
純粋石英ガラスの屈折率を基準とする比屈折率差の最小値が−0.2〜−0.5%である光学クラッド部または光学クラッド部の一部を前記第二のガラスロッドの周囲に形成するクラッド部形成工程を備える、
ことを特徴とする請求項1〜5に記載の光ファイバ母材製造方法。
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011021995A JP5545236B2 (ja) | 2011-02-03 | 2011-02-03 | 光ファイバ母材製造方法 |
DK12153445.7T DK2484644T3 (da) | 2011-02-03 | 2012-02-01 | Fremgangsmåde til fremstilling af en præform til optisk fiber |
EP12153445.7A EP2484644B1 (en) | 2011-02-03 | 2012-02-01 | Method for producing a glass optical fiber preform |
US13/363,652 US20120198891A1 (en) | 2011-02-03 | 2012-02-01 | Method for producing optical fiber preform |
CN201210023520.5A CN102627398B (zh) | 2011-02-03 | 2012-02-02 | 用于制备光纤预制件的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2011021995A JP5545236B2 (ja) | 2011-02-03 | 2011-02-03 | 光ファイバ母材製造方法 |
Publications (2)
Publication Number | Publication Date |
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JP2012162409A true JP2012162409A (ja) | 2012-08-30 |
JP5545236B2 JP5545236B2 (ja) | 2014-07-09 |
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Application Number | Title | Priority Date | Filing Date |
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JP2011021995A Active JP5545236B2 (ja) | 2011-02-03 | 2011-02-03 | 光ファイバ母材製造方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US20120198891A1 (ja) |
EP (1) | EP2484644B1 (ja) |
JP (1) | JP5545236B2 (ja) |
CN (1) | CN102627398B (ja) |
DK (1) | DK2484644T3 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016021576A1 (ja) * | 2014-08-06 | 2016-02-11 | 古河電気工業株式会社 | 光ファイバ母材および光ファイバの製造方法 |
US9395485B2 (en) | 2012-03-23 | 2016-07-19 | Fujikura Ltd. | Method of manufacturing glass preform |
WO2018123541A1 (ja) | 2016-12-28 | 2018-07-05 | 住友電気工業株式会社 | 光ファイバ母材製造方法 |
US10031285B2 (en) | 2015-03-25 | 2018-07-24 | Sumitomo Electric Industries, Ltd. | Multicore optical fiber |
US10155687B2 (en) | 2015-04-30 | 2018-12-18 | Sumitomo Electric Industries, Ltd. | Optical fiber preform |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9411095B2 (en) * | 2013-02-04 | 2016-08-09 | Sumitomo Electric Industries, Ltd. | Optical-fiber preform and method for manufacturing optical-fiber preform |
JP6668833B2 (ja) | 2016-03-09 | 2020-03-18 | 住友電気工業株式会社 | 結合型マルチコア光ファイバ |
JP6951852B2 (ja) | 2017-03-27 | 2021-10-20 | 古河電気工業株式会社 | 光ファイバ及び光ファイバの製造方法 |
WO2019044833A1 (ja) * | 2017-08-31 | 2019-03-07 | 住友電気工業株式会社 | 光ファイバ母材の製造方法、及び、光ファイバの製造方法 |
CN107721149A (zh) * | 2017-11-01 | 2018-02-23 | 江苏亨通光导新材料有限公司 | 轴向气相沉积法制备超低损耗光纤预制棒及光纤 |
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JPS56125233A (en) * | 1980-03-07 | 1981-10-01 | Hitachi Ltd | Manufacture of optical fiber |
JP2004284944A (ja) * | 2003-03-03 | 2004-10-14 | Sumitomo Electric Ind Ltd | ガラス加工方法及びガラス加工装置 |
JP2007504080A (ja) * | 2003-08-29 | 2007-03-01 | コーニング インコーポレイテッド | アルカリ金属酸化物を含有する光ファイバおよびその製造方法と装置 |
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US20080050086A1 (en) * | 2006-08-24 | 2008-02-28 | Scott Robertson Bickham | Optical fiber containing alkali metal oxide |
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2011
- 2011-02-03 JP JP2011021995A patent/JP5545236B2/ja active Active
-
2012
- 2012-02-01 US US13/363,652 patent/US20120198891A1/en not_active Abandoned
- 2012-02-01 DK DK12153445.7T patent/DK2484644T3/da active
- 2012-02-01 EP EP12153445.7A patent/EP2484644B1/en active Active
- 2012-02-02 CN CN201210023520.5A patent/CN102627398B/zh active Active
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JPS56125233A (en) * | 1980-03-07 | 1981-10-01 | Hitachi Ltd | Manufacture of optical fiber |
JP2004284944A (ja) * | 2003-03-03 | 2004-10-14 | Sumitomo Electric Ind Ltd | ガラス加工方法及びガラス加工装置 |
JP2007504080A (ja) * | 2003-08-29 | 2007-03-01 | コーニング インコーポレイテッド | アルカリ金属酸化物を含有する光ファイバおよびその製造方法と装置 |
JP2008536190A (ja) * | 2005-04-14 | 2008-09-04 | コーニング インコーポレイテッド | アルカリおよびフッ素がドープされた光ファイバ |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9395485B2 (en) | 2012-03-23 | 2016-07-19 | Fujikura Ltd. | Method of manufacturing glass preform |
WO2016021576A1 (ja) * | 2014-08-06 | 2016-02-11 | 古河電気工業株式会社 | 光ファイバ母材および光ファイバの製造方法 |
JP2016037412A (ja) * | 2014-08-06 | 2016-03-22 | 古河電気工業株式会社 | 光ファイバ母材および光ファイバの製造方法 |
US10676387B2 (en) | 2014-08-06 | 2020-06-09 | Furukawa Electric Co., Ltd. | Method of producing optical fiber preform and optical fiber |
US11795097B2 (en) | 2014-08-06 | 2023-10-24 | Furukawa Electric Co., Ltd. | Method of producing optical fiber preform and optical fiber |
US10031285B2 (en) | 2015-03-25 | 2018-07-24 | Sumitomo Electric Industries, Ltd. | Multicore optical fiber |
US10155687B2 (en) | 2015-04-30 | 2018-12-18 | Sumitomo Electric Industries, Ltd. | Optical fiber preform |
WO2018123541A1 (ja) | 2016-12-28 | 2018-07-05 | 住友電気工業株式会社 | 光ファイバ母材製造方法 |
US11002905B2 (en) | 2016-12-28 | 2021-05-11 | Sumitomo Electric Industries, Ltd. | Method for producing optical fiber preform |
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CN102627398A (zh) | 2012-08-08 |
CN102627398B (zh) | 2016-01-06 |
EP2484644A1 (en) | 2012-08-08 |
EP2484644B1 (en) | 2013-10-23 |
US20120198891A1 (en) | 2012-08-09 |
JP5545236B2 (ja) | 2014-07-09 |
DK2484644T3 (da) | 2014-01-27 |
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