JP2012167003A - 光ファイバ母材製造方法 - Google Patents
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- 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
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
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- 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]
- C03B37/01413—Reactant delivery systems
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- 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
- C03B37/01807—Reactant delivery systems, e.g. reactant deposition burners
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- 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
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- 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
- 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
- C03B2201/08—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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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02004—Optical fibres with cladding with or without a coating characterised by the core effective area or mode field radius
- G02B6/02009—Large effective area or mode field radius, e.g. to reduce nonlinear effects in single mode fibres
- G02B6/02014—Effective area greater than 60 square microns in the C band, i.e. 1530-1565 nm
- G02B6/02019—Effective area greater than 90 square microns in the C band, i.e. 1530-1565 nm
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
- G02B6/02228—Dispersion flattened fibres, i.e. having a low dispersion variation over an extended wavelength range
- G02B6/02238—Low dispersion slope fibres
- G02B6/02242—Low dispersion slope fibres having a dispersion slope <0.06 ps/km/nm2
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/02214—Optical fibres with cladding with or without a coating tailored to obtain the desired dispersion, e.g. dispersion shifted, dispersion flattened
- G02B6/02219—Characterised by the wavelength dispersion properties in the silica low loss window around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
- G02B6/02266—Positive dispersion fibres at 1550 nm
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03605—Highest refractive index not on central axis
- G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/036—Optical fibres with cladding with or without a coating core or cladding comprising multiple layers
- G02B6/03616—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference
- G02B6/03622—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only
- G02B6/03627—Optical fibres characterised both by the number of different refractive index layers around the central core segment, i.e. around the innermost high index core layer, and their relative refractive index difference having 2 layers only arranged - +
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- Chemical Kinetics & Catalysis (AREA)
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- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
【解決手段】本発明の光ファイバ母材製造方法は、 (1) 平均濃度5atm・ppm以上のアルカリ金属元素が添加された石英ガラスからなるガラスロッドを作製するロッド作製工程と、(2) ロッド作製工程において作製されたガラスロッドを熱処理する熱処理工程と、(3) 熱処理工程において熱処理されたガラスロッドの外周に、濃度6000atm・ppm以上の塩素を含みアルカリ金属元素を含まない石英ガラス層を設けて、ガラスロッドおよび石英ガラス層をコア部とするコア部作製工程と、(4) コア部作製工程において作製されたコア部の外周に、そのコア部の屈折率より低い屈折率を有する石英ガラスのクラッド部を設けるクラッド部作製工程とを備える。
【選択図】図1
Description
Claims (7)
- 平均濃度5atm・ppm以上のアルカリ金属元素が添加された石英ガラスからなるガラスロッドを作製するロッド作製工程と、
前記ロッド作製工程において作製されたガラスロッドを熱処理する熱処理工程と、
前記熱処理工程において熱処理されたガラスロッドの外周に、濃度6000atm・ppm以上の塩素を含みアルカリ金属元素を含まない石英ガラス層を設けて、前記ガラスロッドおよび前記石英ガラス層をコア部とするコア部作製工程と、
前記コア部作製工程において作製されたコア部の外周に、そのコア部の屈折率より低い屈折率を有する石英ガラスのクラッド部を設けるクラッド部作製工程と
を備えることを特徴とする光ファイバ母材製造方法。 - 前記熱処理工程において、800℃より高く1400℃以下の温度で前記ガラスロッドを熱処理する、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。
- 前記熱処理工程において、8時間以上20時間以下に亘って前記ガラスロッドを熱処理する、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。
- 前記ロッド作製工程において、塩素添加濃度が400atm・ppm以下である前記ガラスロッドを作製する、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。
- 前記ロッド作製工程において、カリウム、ナトリウム、ルビジウム、セシウムのいずれかがアルカリ金属元素として添加されたガラスロッドを作製する、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。
- 前記コア部作製工程において、前記石英ガラス層の塩素濃度が6000atm・ppm以上14000atm・ppm以下である、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。
- 前記コア部作製工程において、前記石英ガラス層の塩素濃度が8000atm・ppm以上17000atm・ppm以下である、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。
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JP2011254067A JP5817462B2 (ja) | 2011-01-27 | 2011-11-21 | 光ファイバ母材製造方法 |
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JP2011254067A JP5817462B2 (ja) | 2011-01-27 | 2011-11-21 | 光ファイバ母材製造方法 |
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JP2012167003A true JP2012167003A (ja) | 2012-09-06 |
JP5817462B2 JP5817462B2 (ja) | 2015-11-18 |
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US (1) | US8839646B2 (ja) |
EP (2) | EP2481716B1 (ja) |
JP (1) | JP5817462B2 (ja) |
CN (1) | CN102617033B (ja) |
DK (2) | DK2722317T3 (ja) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2014092110A1 (ja) * | 2012-12-12 | 2014-06-19 | 住友電気工業株式会社 | 光ファイバ製造方法および光ファイバ |
WO2014119415A1 (ja) * | 2013-01-29 | 2014-08-07 | 古河電気工業株式会社 | ガラス母材の製造方法および光ファイバ |
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 |
JP2017526601A (ja) * | 2014-07-10 | 2017-09-14 | コーニング インコーポレイテッド | 高塩素含有量の低減衰光ファイバー |
Families Citing this family (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP2535319A3 (en) * | 2011-06-15 | 2014-09-10 | Sumitomo Electric Industries, Ltd. | Method for producing optical fiber |
DK2829522T3 (en) * | 2012-03-21 | 2018-11-05 | Sumitomo Electric Industries | PROCEDURE FOR MANUFACTURING OPTICAL FIBERS |
US9586853B2 (en) * | 2014-07-09 | 2017-03-07 | Corning Incorporated | Method of making optical fibers in a reducing atmosphere |
US9753216B2 (en) * | 2015-08-27 | 2017-09-05 | Sumitomo Electric Industries, Ltd. | Multimode optical fiber and optical cable including the same |
US10571628B2 (en) * | 2017-11-20 | 2020-02-25 | Corning Incorporated | Low loss optical fiber with core codoped with two or more halogens |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030221459A1 (en) * | 2002-05-31 | 2003-12-04 | Walczak Wanda J. | Method for forming an optical waveguide fiber preform |
US20040057692A1 (en) | 2002-08-28 | 2004-03-25 | Ball Laura J. | Low loss optical fiber and method for making same |
EP1663890B1 (en) | 2003-08-29 | 2020-09-23 | Corning Incorporated | Optical fiber containing an alkali metal oxide and methods and apparatus for manufacturing same |
US7536076B2 (en) * | 2006-06-21 | 2009-05-19 | Corning Incorporated | Optical fiber containing alkali metal oxide |
DK2125645T3 (da) | 2007-02-28 | 2011-07-18 | Corning Inc | Reduktion af deformationen af opfisk fiberrør/præform under konsolidering |
-
2011
- 2011-11-21 JP JP2011254067A patent/JP5817462B2/ja active Active
-
2012
- 2012-01-20 CN CN201210020051.1A patent/CN102617033B/zh active Active
- 2012-01-24 US US13/356,984 patent/US8839646B2/en active Active
- 2012-01-26 DK DK14150752.5T patent/DK2722317T3/en active
- 2012-01-26 DK DK12152627.1T patent/DK2481716T3/da active
- 2012-01-26 EP EP12152627.1A patent/EP2481716B1/en active Active
- 2012-01-26 EP EP14150752.5A patent/EP2722317B1/en active Active
Cited By (16)
Publication number | Priority date | Publication date | Assignee | Title |
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US9395485B2 (en) | 2012-03-23 | 2016-07-19 | Fujikura Ltd. | Method of manufacturing glass preform |
US9932265B2 (en) | 2012-12-12 | 2018-04-03 | Sumitomo Electric Industries, Ltd. | Method of making an optical fiber containing an alkali metal in the core |
JP2014114195A (ja) * | 2012-12-12 | 2014-06-26 | Sumitomo Electric Ind Ltd | 光ファイバ製造方法および光ファイバ |
WO2014092110A1 (ja) * | 2012-12-12 | 2014-06-19 | 住友電気工業株式会社 | 光ファイバ製造方法および光ファイバ |
US9527765B2 (en) | 2012-12-12 | 2016-12-27 | Sumitomo Electric Industries, Ltd. | Optical fiber manufacturing method and optical fiber |
US9783450B2 (en) | 2013-01-29 | 2017-10-10 | Furukawa Electric Co., Ltd. | Method of producing glass preform and optical fiber |
WO2014119415A1 (ja) * | 2013-01-29 | 2014-08-07 | 古河電気工業株式会社 | ガラス母材の製造方法および光ファイバ |
JP2017007941A (ja) * | 2013-01-29 | 2017-01-12 | 古河電気工業株式会社 | ガラス母材の製造方法 |
JP2015098435A (ja) * | 2013-01-29 | 2015-05-28 | 古河電気工業株式会社 | 光ファイバ |
JP5697065B2 (ja) * | 2013-01-29 | 2015-04-08 | 古河電気工業株式会社 | ガラス母材の製造方法 |
JP2017526601A (ja) * | 2014-07-10 | 2017-09-14 | コーニング インコーポレイテッド | 高塩素含有量の低減衰光ファイバー |
US11237321B2 (en) | 2014-07-10 | 2022-02-01 | Corning Incorporated | High chlorine content low attenuation optical fiber |
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 |
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 |
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 |
Also Published As
Publication number | Publication date |
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DK2481716T3 (da) | 2014-03-31 |
DK2722317T3 (en) | 2017-04-03 |
EP2481716B1 (en) | 2014-03-19 |
EP2481716A1 (en) | 2012-08-01 |
EP2722317B1 (en) | 2017-03-01 |
US20120192593A1 (en) | 2012-08-02 |
CN102617033A (zh) | 2012-08-01 |
CN102617033B (zh) | 2016-06-01 |
JP5817462B2 (ja) | 2015-11-18 |
EP2722317A1 (en) | 2014-04-23 |
US8839646B2 (en) | 2014-09-23 |
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