JP5604028B2 - 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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- JP5604028B2 JP5604028B2 JP2007099081A JP2007099081A JP5604028B2 JP 5604028 B2 JP5604028 B2 JP 5604028B2 JP 2007099081 A JP2007099081 A JP 2007099081A JP 2007099081 A JP2007099081 A JP 2007099081A JP 5604028 B2 JP5604028 B2 JP 5604028B2
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- fiber
- cladding
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Classifications
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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
- G02B6/03688—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 5 or more 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
-
- 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
-
- 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
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
外部光クラッドとの屈折率の差がDn1である中心コアと、
外部光クラッドとの屈折率の差がDn2である第1の中間内部クラッドと、
外部光クラッドとの屈折率の差Dn3が−5.10−3以下である第1の減衰内部クラッドと、
外部光クラッドとの屈折率の差がDn4である第2の中間内部クラッドと、
外部光クラッドとの屈折率の差Dn5が、外部光クラッドと第1の減衰内部クラッドの屈折率の差Dn3よりその絶対値が小さい第2の減衰内部クラッドと
を備えた光伝送ファイバであって、
波長が1625nmである場合、15mmの曲げ半径に対する曲げ損失が10巻き当たり0.1dB以下であり、また、7.5mmの曲げ半径に対する曲げ損失が1巻き当たり0.5dB以下である光伝送ファイバが提供される。
− 第2の減衰内部クラッドと外部光クラッドの間の屈折率の差が、−0.3.10−3と−3.10−3の間である。
− 中心コアと第1の中間内部クラッドの間の屈折率の差が、4.5.10−3と6.0.10−3の間である。
− 中心コアが、外部光クラッドとの5.0.10−3と5.6.10−3の間の屈折率の差に対して、3.5μmと4.5μmの間の半径を有している。
− 第1の中間内部クラッドの半径が、9μmと12μmの間である。
− 第1の減衰内部クラッドの半径が、14μmと16μmの間である。
− 第2の中間内部クラッドと外部光クラッドとの屈折率の差が実質的にゼロである。
− 第2の中間内部クラッドの半径が、18μmと20μmの間である。
− 第2の減衰内部クラッドの半径が、25μmと40μmの間である。
− 1625nmの波長における、20mmの曲げ半径に対する曲げ損失が100巻き当たり0.1dB以下である。
− 1625nmの波長における、5mmの曲げ半径に対する曲げ損失が1巻き当たり1dB以下である。
− いわゆる固定径ドラム(フランス語の「touret a diametre fixe」)方式によるマイクロベンディング損失が、最大1625nmの波長に対して0.8dB/km以下である。
− ケーブル遮断波長が1260nm以下である。
− 1310nmの波長に対するモードフィールド径が、8.6μmと9.5μmの間である。
− 有効遮断波長ICeffに対する1550nmにおけるファイバのモードフィールド径の比率(MAC)が8.2未満である。
− ゼロ波長分散波長(λ0)が1300nmと1324nmの間であり、この波長における波長分散勾配が0.092ps/nm2/km以下である。
Claims (14)
- 外部光クラッドとの屈折率の差Dn 1 が5.0×10 −3 と5.6×10 −3 の間であり、3.5μmと4.5μmの間からなる半径r 1 を有する中心コアと、
外部光クラッドとの屈折率の差がDn2であり、中心コアと第1の中間クラッドの間の屈折率の差(Dn 1 −Dn 2 )が、4.5×10 −3 と6.0×10 −3 の間からなり、9μmと12μmの間からなる半径r 2 を有する第1の中間クラッドと、
外部光クラッドとの屈折率の差Dn3が−5×10−3以下であり、14μmと16μmの間からなる半径r 3 を有する第1の減衰クラッドと、
外部光クラッドとの屈折率の差Dn 4 がほぼゼロであり、18μmと20μmの間からなる半径r 4 を有する第2の中間クラッドと、
外部光クラッドとの屈折率の差Dn5が、−0.3×10 −3 と−3×10 −3 の間からなり、かつ外部光クラッドと第1の減衰クラッドの屈折率の差Dn3よりその絶対値が小さく、25μmと40μmの間からなる半径r 5 を有する第2の減衰クラッドと
を備えた光伝送ファイバであって、
1625nmの波長における、15mmの曲げ半径に対する曲げ損失が10巻き当たり0.1dB以下であり、また、7.5mmの曲げ半径に対する曲げ損失が1巻き当たり0.5dB以下である、光伝送ファイバ。 - 1625nmの波長における、20mmの曲げ半径に対する曲げ損失が100巻き当たり0.1dB以下である、請求項1に記載のファイバ。
- 1625nmの波長における、10mmの曲げ半径に対する曲げ損失が0.2dB以下である、請求項1に記載のファイバ。
- 1625nmの波長における、5mmの曲げ半径に対する曲げ損失が1巻き当たり1dB以下である、請求項1から3のいずれか一項に記載のファイバ。
- 固定径ドラム方式によるマイクロベンディング損失が、最大1625nmの波長に対して0.8dB/km以下である、請求項1から4のいずれか一項に記載のファイバ。
- ケーブル遮断波長が1260nm以下である、請求項1から5のいずれか一項に記載のファイバ。
- 1310nmの波長におけるモードフィールド径(MFD)が、8.6μmと9.5μmの間からなる、請求項1から6のいずれか一項に記載のファイバ。
- 有効遮断波長λCeffに対する1550nmにおけるモードフィールド径の比率(MAC)が8.2未満である、請求項1から7のいずれか一項に記載のファイバ。
- ゼロ波長分散波長(λ0)が1300nmと1324nmの間からなり、前記波長における波長分散勾配が0.092ps/nm2/km以下である、請求項1から8のいずれか一項に記載のファイバ。
- 請求項1から9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取るハウジングを備えた光モジュール。
- 請求項1から9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取る保管箱。
- ファイバが15mm未満の曲げ半径で巻き取られる、請求項10または11に記載の光モジュールまたは保管箱。
- ファイバが7.5mm未満の曲げ半径で巻き取られる、請求項10または11に記載の光モジュールまたは保管箱。
- 請求項10から13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1つの保管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 (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0603128A FR2899693B1 (fr) | 2006-04-10 | 2006-04-10 | Fibre optique monomode. |
FR0603128 | 2006-04-10 |
Publications (3)
Publication Number | Publication Date |
---|---|
JP2007279739A JP2007279739A (ja) | 2007-10-25 |
JP2007279739A5 JP2007279739A5 (ja) | 2012-10-25 |
JP5604028B2 true JP5604028B2 (ja) | 2014-10-08 |
Family
ID=36660771
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2007099081A Active JP5604028B2 (ja) | 2006-04-10 | 2007-04-05 | 単一モード光ファイバ |
Country Status (7)
Country | Link |
---|---|
US (3) | US7587111B2 (ja) |
EP (1) | EP1845399B1 (ja) |
JP (1) | JP5604028B2 (ja) |
KR (1) | KR101360472B1 (ja) |
CN (1) | CN101055331B (ja) |
DK (1) | DK1845399T3 (ja) |
FR (1) | FR2899693B1 (ja) |
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JP2007279739A (ja) | 2007-10-25 |
EP1845399B1 (en) | 2016-03-02 |
US8103143B2 (en) | 2012-01-24 |
FR2899693A1 (fr) | 2007-10-12 |
FR2899693B1 (fr) | 2008-08-22 |
CN101055331A (zh) | 2007-10-17 |
EP1845399A1 (en) | 2007-10-17 |
DK1845399T3 (en) | 2016-04-18 |
US7587111B2 (en) | 2009-09-08 |
US20100021117A1 (en) | 2010-01-28 |
US7899293B2 (en) | 2011-03-01 |
KR101360472B1 (ko) | 2014-02-07 |
US20070280615A1 (en) | 2007-12-06 |
CN101055331B (zh) | 2012-09-19 |
US20110164852A1 (en) | 2011-07-07 |
KR20070101145A (ko) | 2007-10-16 |
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