JP2013190790A - マルチモード光ファイバ - Google Patents
マルチモード光ファイバ Download PDFInfo
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- JP2013190790A JP2013190790A JP2013050507A JP2013050507A JP2013190790A JP 2013190790 A JP2013190790 A JP 2013190790A JP 2013050507 A JP2013050507 A JP 2013050507A JP 2013050507 A JP2013050507 A JP 2013050507A JP 2013190790 A JP2013190790 A JP 2013190790A
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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
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
- G02B6/0288—Multimode fibre, e.g. graded index core for compensating modal dispersion
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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
- G02B6/036—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
- G02B6/03638—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 3 layers only
- G02B6/03644—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 3 layers only arranged - + -
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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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- 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
-
- 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 - +
-
- 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
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/28—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals
- G02B6/293—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means
- G02B6/29371—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion
- G02B6/29374—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide
- G02B6/29376—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide coupling light guides for controlling wavelength dispersion, e.g. by concatenation of two light guides having different dispersion properties
- G02B6/29377—Optical coupling means having data bus means, i.e. plural waveguides interconnected and providing an inherently bidirectional system by mixing and splitting signals with wavelength selective means operating principle based on material dispersion in an optical light guide coupling light guides for controlling wavelength dispersion, e.g. by concatenation of two light guides having different dispersion properties controlling dispersion around 1550 nm, i.e. S, C, L and U bands from 1460-1675 nm
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- 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
- C03B2201/31—Doped silica-based glasses doped with metals, e.g. Ga, Sn, Sb, Pb or Bi doped with germanium
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/22—Radial profile of refractive index, composition or softening point
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/22—Radial profile of refractive index, composition or softening point
- C03B2203/26—Parabolic or graded index [GRIN] core profile
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Dispersion Chemistry (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)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
【解決手段】コア部の外径2aが47.5〜52.5μm又は60〜65μmであるGI型マルチモード光ファイバに関する。当該マルチモード光ファイバにおいて、クラッド部の直径を2bとするとき、直径1.8b以上の領域として規定される、クラッド部の最外周部内に残留する光軸方向の応力は、0〜25MPaの引張応力である。GI型母材を特定の張力で線引きすることにより得られる。
【選択図】図6
Description
Claims (5)
- 1. 光軸方向に沿って伸びるとともに、GeO2が添加されたコア部と、前記コア部の外周に設けられ、前記コア部よりも低い屈折率を有するクラッド部を備えたマルチモード光ファイバであって、
当該マルチモード光ファイバの径方向の屈折率分布のうち前記コア部に相当する部分のα値が1.9〜2.2、前記クラッド部に対する前記コア部の最大比屈折率差Δが0.8〜2.4%、前記コア部の直径2aが47.5〜52.5μm又は60〜65μmであり、
前記クラッド部の直径を2bとするとき、直径1.8b以上の領域として規定される、前記クラッド部の最外周部内に残留する前記光軸方向の応力は、0〜25MPaの引張応力であるマルチモード光ファイバ。 - 前記クラッド部の最外周部内に残留する前記光軸方向の応力は、0〜10MPaの引張応力であることを特徴とする請求項1に記載のマルチモード光ファイバ。
- 前記コア部と前記クラッド部との間に設けられた、前記クラッド部よりも低い屈折率を有するトレンチ部を更に備えることを特徴とする請求項1に記載のマルチモード光ファイバ。
- 前記トレンチ部は、2aよりも大きい内径と、1.8bよりも小さい外径を有することを特徴とする請求項3に記載のマルチモード光ファイバ。
- 前記クラッド部の最外周部内に残留する前記光軸方向の応力は、0〜10MPaの引張応力であることを特徴とする請求項3に記載のマルチモード光ファイバ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/419,767 US8798420B2 (en) | 2012-03-14 | 2012-03-14 | Multi-mode optical fiber |
US13/419,767 | 2012-03-14 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2013190790A true JP2013190790A (ja) | 2013-09-26 |
JP6225435B2 JP6225435B2 (ja) | 2017-11-08 |
Family
ID=49134398
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2013050507A Active JP6225435B2 (ja) | 2012-03-14 | 2013-03-13 | マルチモード光ファイバ |
Country Status (3)
Country | Link |
---|---|
US (1) | US8798420B2 (ja) |
JP (1) | JP6225435B2 (ja) |
CN (1) | CN103308979A (ja) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9835502B2 (en) * | 2012-01-19 | 2017-12-05 | Draka Comteq B.V. | Temperature and strain sensing optical fiber and temperature and strain sensor |
US9031371B2 (en) * | 2012-05-08 | 2015-05-12 | Sumitomo Electric Industries, Ltd. | Multi-mode optical fiber |
US8977093B2 (en) * | 2013-06-14 | 2015-03-10 | Sumitomo Electric Industries, Ltd. | Multimode optical fiber |
CN105549149A (zh) * | 2014-10-31 | 2016-05-04 | 住友电气工业株式会社 | 多模光纤及其制造方法 |
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 |
WO2020209229A1 (ja) * | 2019-04-10 | 2020-10-15 | 住友電気工業株式会社 | 光ファイバ |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5288349A (en) * | 1976-01-20 | 1977-07-23 | Nippon Selfoc Co Ltd | Optical fiber for communication |
JP2003207675A (ja) * | 2002-01-11 | 2003-07-25 | Sumitomo Electric Ind Ltd | 石英系光ファイバ及びその製造方法 |
JP2005227786A (ja) * | 2004-02-13 | 2005-08-25 | Samsung Electronics Co Ltd | 低いベンディング損失を有する光ファイバー |
JP2005343703A (ja) * | 2004-05-31 | 2005-12-15 | Fujikura Ltd | 光ファイバ素線の製造方法、光ファイバ素線 |
JP2006047719A (ja) * | 2004-08-05 | 2006-02-16 | Fujikura Ltd | 低曲げ損失マルチモードファイバ |
JP2006058494A (ja) * | 2004-08-18 | 2006-03-02 | Fujikura Ltd | 光ファイバ素線及びその製造方法 |
JP2007197273A (ja) * | 2006-01-27 | 2007-08-09 | Fujikura Ltd | 光ファイバ素線及びその製造方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3912009B2 (ja) * | 1998-09-18 | 2007-05-09 | 住友電気工業株式会社 | 分散補償ファイバ |
TW419607B (en) * | 1999-01-13 | 2001-01-21 | Sumitomo Electric Industries | Optical fiber grating element, manufacture method of the same and optical filter |
US6292612B1 (en) * | 1999-06-07 | 2001-09-18 | Lucent Technologies Inc. | Multi-mode optical fiber having improved refractive index profile and devices comprising same |
JP3829665B2 (ja) * | 2000-09-29 | 2006-10-04 | 住友電気工業株式会社 | 光ファイバカプラ及び光ファイバカプラ用の光ファイバ |
KR100416979B1 (ko) | 2002-03-18 | 2004-02-05 | 삼성전자주식회사 | 광섬유의 잔류응력 측정장치 |
JP4318036B2 (ja) * | 2004-02-16 | 2009-08-19 | オムロン株式会社 | 光導波路 |
US7787731B2 (en) * | 2007-01-08 | 2010-08-31 | Corning Incorporated | Bend resistant multimode optical fiber |
US8139700B2 (en) | 2009-06-26 | 2012-03-20 | International Business Machines Corporation | Dynamic quadrature clock correction for a phase rotator system |
JP2011102964A (ja) | 2009-10-14 | 2011-05-26 | Sumitomo Electric Ind Ltd | 光ファイバおよび光ファイバ製造方法 |
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2012
- 2012-03-14 US US13/419,767 patent/US8798420B2/en active Active
-
2013
- 2013-03-13 JP JP2013050507A patent/JP6225435B2/ja active Active
- 2013-03-14 CN CN2013100811384A patent/CN103308979A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5288349A (en) * | 1976-01-20 | 1977-07-23 | Nippon Selfoc Co Ltd | Optical fiber for communication |
JP2003207675A (ja) * | 2002-01-11 | 2003-07-25 | Sumitomo Electric Ind Ltd | 石英系光ファイバ及びその製造方法 |
JP2005227786A (ja) * | 2004-02-13 | 2005-08-25 | Samsung Electronics Co Ltd | 低いベンディング損失を有する光ファイバー |
JP2005343703A (ja) * | 2004-05-31 | 2005-12-15 | Fujikura Ltd | 光ファイバ素線の製造方法、光ファイバ素線 |
JP2006047719A (ja) * | 2004-08-05 | 2006-02-16 | Fujikura Ltd | 低曲げ損失マルチモードファイバ |
JP2006058494A (ja) * | 2004-08-18 | 2006-03-02 | Fujikura Ltd | 光ファイバ素線及びその製造方法 |
JP2007197273A (ja) * | 2006-01-27 | 2007-08-09 | Fujikura Ltd | 光ファイバ素線及びその製造方法 |
Also Published As
Publication number | Publication date |
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CN103308979A (zh) | 2013-09-18 |
JP6225435B2 (ja) | 2017-11-08 |
US20130243379A1 (en) | 2013-09-19 |
US8798420B2 (en) | 2014-08-05 |
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