JP2007140510A - 単一モード光ファイバ - Google Patents
単一モード光ファイバ Download PDFInfo
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- JP2007140510A JP2007140510A JP2006299891A JP2006299891A JP2007140510A JP 2007140510 A JP2007140510 A JP 2007140510A JP 2006299891 A JP2006299891 A JP 2006299891A JP 2006299891 A JP2006299891 A JP 2006299891A JP 2007140510 A JP2007140510 A JP 2007140510A
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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
-
- 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
- G02B6/0365—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 - - +
-
- 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
-
- 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
-
- 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
- C03B2201/30—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
-
- 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
-
- 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
- G02B6/03616—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
- G02B6/03661—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 4 layers only
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- Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Glass Compositions (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
【解決手段】光伝送ファイバは、外部光クラッドとの屈折率の差がΔn1である中心コアと、外部クラッドとの屈折率の差がΔn2である第1の内部クラッドと、外部クラッドとの屈折率の差Δn3が−3・10−3未満である第2の埋設内部クラッドとを備えている。第2の埋設内部クラッドは、さらに、0.5%と7%の間の重量濃度のゲルマニウムを含有している。この光伝送ファイバは、曲げ損失およびマイクロベンディング損失が小さくなっているが、光特性は標準の単一モードファイバ(SSMF)の特性と同じである。
【選択図】図2
Description
外部光クラッドとの屈折率の差がΔn1である中心コアと、
外部クラッドとの屈折率の差がΔn2である第1の内部クラッドと、
外部クラッドとの屈折率の差Δn3が−3・10−3未満である、0.5%と7%の間の重量濃度のゲルマニウムを含有した第2の埋設内部クラッドと
を備えた光伝送ファイバが提供される。
石英管を提供するステップおよび前記石英管を旋盤の上に位置決めするステップと、
酸素O2、シリカSiCl4、フッ素C2F6およびゲルマニウムGeO2のガス混合物を石英管に注入するステップと、
第2の埋設内部クラッドを形成するドープシリカの層を堆積させるためのプラズマをマイクロ波加熱によって得るためにガス混合物をイオン化するステップと、
第1の内部クラッドおよび中心コアを形成するドープシリカの層を堆積させるために連続的にガス混合物を注入するステップ、および前記ガス混合物をイオン化するステップ
が含まれている。
r2 第1の内部クラッドの半径
r3 第2の埋設クラッドの半径
Δn1 中心コアと外部光クラッドの屈折率の差
Δn2 第1の内部クラッドと外部クラッドの屈折率の差
Δn3 第2の埋設内部クラッドと外部クラッドの屈折率の差
Claims (21)
- 光伝送ファイバであって、
外部光クラッドとの屈折率の差がΔn1である中心コアと、
外部クラッドとの屈折率の差がΔn2である第1の内部クラッドと、
外部クラッドとの屈折率の差Δn3が−3・10−3未満であり、0.5%と7%の間の重量濃度のゲルマニウムを含有した第2の埋設内部クラッドとを備えた、ファイバ。 - 第2の内部クラッドと外部クラッドの屈折率の差Δn3が−15・10−3より大きい、請求項1に記載のファイバ。
- 中心コアと第1の内部クラッドの屈折率の差(Δn1−Δn2)が3.9・10−3と5.9・10−3の間である、請求項1または2に記載のファイバ。
- 第2の埋設クラッドの半径(r3)が12μmと25μmの間である、請求項1、2または3に記載のファイバ。
- 中心コアの半径(r1)が3.5μmと4.5μmの間であり、外部クラッドとの屈折率の差(Δn1)が4.2・10−3と6.1・10−3の間である、請求項1から4のいずれかに記載のファイバ。
- 第1の内部クラッドの半径(r2)が7.5μmと14.5μmの間であり、外部クラッドとの屈折率の差(Δn2)が−1.2・10−3と1.2・10−3の間である、請求項1から5に記載のファイバ。
- 波長1310nmにおける波長分散勾配が0.093ps/nm2−km以下であることを特徴とする、請求項1から7のいずれかに記載のファイバ。
- 1300nmと1324nmの間の波長で波長分散が相殺されることを特徴とする、請求項1から8のいずれかに記載のファイバ。
- ケーブル遮断波長が1260nm以下であることを特徴とする、請求項1から9のいずれかに記載のファイバ。
- 曲げ半径が15mm、ループ数が100の場合、波長1625nmにおける曲げ損失が1dB以下であることを特徴とする、請求項1から10のいずれかに記載のファイバ。
- 曲げ半径が11mm、ループ数が1の場合、波長1625nmにおける曲げ損失が0.5dB以下であることを特徴とする、請求項1から10のいずれかに記載のファイバ。
- 曲げ半径が5mm、ループ数が1の場合、波長1625nmにおける曲げ損失が2dB以下であることを特徴とする、請求項1から10のいずれかに記載のファイバ。
- いわゆる固定径ドラム方式で測定した、1625nmの波長までのマイクロベンディング損失が0.8dB/km以下であることを特徴とする、請求項1から13のいずれかに記載のファイバ。
- 第2の埋設内部クラッドが0.5%と1.5%の間の重量濃度のゲルマニウムを含有することを特徴とする、請求項1から14のいずれかに記載のファイバ。
- 請求項1から15のいずれか一項に記載の光伝送ファイバを製造するための方法であって、
石英管を提供するステップおよび前記石英管を旋盤の上に位置決めするステップと、
酸素O2、シリカSiCl4、フッ素C2F6およびゲルマニウムGeO2のガス混合物を石英管に注入するステップと、
第2の埋設内部クラッドを形成するドープシリカの層を堆積させるためのプラズマをマイクロ波加熱によって得るためにガス混合物をイオン化するステップと、
第1の内部クラッドおよび中心コアを形成するドープシリカの層を堆積させるために連続的にガス混合物を注入するステップ、および前記ガス混合物をイオン化するステップとを含む、方法。 - 請求項1から15のいずれか一項に記載のファイバの少なくとも巻き取られた部分を受け入れるハウジングを備えた、光モジュール。
- 請求項1から15のいずれか一項に記載のファイバの少なくとも巻き取られた部分を受け入れる、収納箱。
- ファイバが15mm未満の曲げ半径で巻かれる、請求項17または18に記載の光モジュールまたは収納箱。
- ファイバが11mm未満の曲げ半径で巻かれる、請求項17または18に記載の光モジュールまたは収納箱。
- 請求項17から20のいずれか一項に記載の少なくとも1つの光モジュールまたは少なくとも1つの収納箱を備えた、ファイバトゥーザホーム(FTTH)またはファイバトゥーザカーブ(FTTC)光システム。
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0511443A FR2893149B1 (fr) | 2005-11-10 | 2005-11-10 | Fibre optique monomode. |
Publications (1)
Publication Number | Publication Date |
---|---|
JP2007140510A true JP2007140510A (ja) | 2007-06-07 |
Family
ID=36613515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006299891A Pending JP2007140510A (ja) | 2005-11-10 | 2006-11-06 | 単一モード光ファイバ |
Country Status (12)
Country | Link |
---|---|
US (3) | US7623747B2 (ja) |
EP (1) | EP1785754B1 (ja) |
JP (1) | JP2007140510A (ja) |
KR (1) | KR101273759B1 (ja) |
CN (1) | CN1982928B (ja) |
AT (1) | ATE467142T1 (ja) |
DE (1) | DE602006014078D1 (ja) |
DK (1) | DK1785754T3 (ja) |
ES (1) | ES2344992T3 (ja) |
FR (1) | FR2893149B1 (ja) |
PL (1) | PL1785754T3 (ja) |
PT (1) | PT1785754E (ja) |
Cited By (7)
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WO2009104724A1 (ja) * | 2008-02-22 | 2009-08-27 | 住友電気工業株式会社 | 光ファイバおよび光ケーブル |
JP2010503019A (ja) * | 2006-08-31 | 2010-01-28 | コーニング インコーポレイテッド | 低曲げ損失シングルモード光ファイバ |
JP2010170136A (ja) * | 2009-01-23 | 2010-08-05 | Draka Comteq Bv | 単一モード光ファイバー |
JP2010181641A (ja) * | 2009-02-05 | 2010-08-19 | Fujikura Ltd | 光ファイバ |
JP2011090050A (ja) * | 2009-10-20 | 2011-05-06 | National Institute Of Information & Communication Technology | 光エネルギー伝送装置 |
JP2011526879A (ja) * | 2008-07-07 | 2011-10-20 | ヘレーウス クヴァルツグラース ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー コマンディートゲゼルシャフト | 曲がりにくい光ファイバー、曲がりにくい光ファイバーの形成のための半製品としての石英ガラスチューブ、ファイバーの形成のための方法 |
JP2018021999A (ja) * | 2016-08-02 | 2018-02-08 | 日本電信電話株式会社 | 光ファイバ及び光伝送システム |
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Also Published As
Publication number | Publication date |
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US20110286710A1 (en) | 2011-11-24 |
KR20070050380A (ko) | 2007-05-15 |
PL1785754T3 (pl) | 2010-09-30 |
DE602006014078D1 (de) | 2010-06-17 |
FR2893149B1 (fr) | 2008-01-11 |
CN1982928A (zh) | 2007-06-20 |
CN1982928B (zh) | 2011-12-07 |
ATE467142T1 (de) | 2010-05-15 |
US20100067859A1 (en) | 2010-03-18 |
US20070127878A1 (en) | 2007-06-07 |
EP1785754A1 (en) | 2007-05-16 |
US7995889B2 (en) | 2011-08-09 |
US7623747B2 (en) | 2009-11-24 |
PT1785754E (pt) | 2010-07-16 |
US8837889B2 (en) | 2014-09-16 |
KR101273759B1 (ko) | 2013-06-12 |
ES2344992T3 (es) | 2010-09-13 |
DK1785754T3 (da) | 2010-07-19 |
FR2893149A1 (fr) | 2007-05-11 |
EP1785754B1 (en) | 2010-05-05 |
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