JP2015503122A - 低曲げ損失光ファイバ - Google Patents
低曲げ損失光ファイバ Download PDFInfo
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- JP2015503122A JP2015503122A JP2014544860A JP2014544860A JP2015503122A JP 2015503122 A JP2015503122 A JP 2015503122A JP 2014544860 A JP2014544860 A JP 2014544860A JP 2014544860 A JP2014544860 A JP 2014544860A JP 2015503122 A JP2015503122 A JP 2015503122A
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- Prior art keywords
- refractive index
- cladding region
- optical fiber
- relative refractive
- fiber
- Prior art date
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Classifications
-
- 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
- G02B6/03633—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
- G02B6/02—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
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
- G02B6/0286—Combination of graded index in the central core segment and a graded index layer external to the central core segment
-
- 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
- G02B6/02—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
-
- 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 - - +
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Glass Compositions (AREA)
- Lasers (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Description
外径r1および相対屈折率差分Δ1maxを有する中央コア領域;および
クラッド領域であって、(i)6マイクロメートル超の外径r2および相対屈折率差分Δ2を有し、0.3≦r1/r2≦0.85である第1の内側クラッド領域と、(ii)9マイクロメートル超の外径r3および最小相対屈折率差分Δ3minを有する第2の内側クラッド領域であって、半径の増加と共に負の方向に増加する相対屈折率差分を有する少なくとも1つの領域を持つ第2の内側クラッド領域と、(iii)内側クラッド領域を取り囲み、相対屈折率差分Δ4を有する外側クラッド領域とを含み、Δ1max>Δ2>Δ3min、Δ3min<Δ4であるクラッド領域;
を備えている。
外径r1、Δ1maxのピーク(最大)相対屈折率差分を有するゲルマニアドープト中央コア領域であって、1と100との間の屈折率アルファプロファイルαコア(例えば、1.8≦αコア≦100;1.8≦αコア≦2.2;2≦αコア≦100;5≦αコア≦100;2≦αコア≦20、または5≦αコア≦20)を有する中央コア領域;および
クラッド領域であって、(i)6マイクロメートル超の外径r2および相対屈折率差分Δ2を有し、0.3≦r1/r2≦0.85である第1の内側クラッド領域と、(ii)9マイクロメートル超の外径r3および最小相対屈折率差分Δ3minを有する第2の内側クラッド領域であって、半径の増加と共に負の方向に増加する相対屈折率差分を有する少なくとも1つの領域を持つ第2の内側クラッド領域と、(iii)内側クラッド領域を取り囲み、相対屈折率差分Δ4を有する外側クラッド領域とを含み、Δ1>Δ2>Δ3、Δ3<Δ4であるクラッド領域;
を備えている。
下記の表1A、1B、2A、2B、3〜5は、モデル化された説明の実施例1〜6と8〜27、製造されたファイバの実施例7、および2つの比較例のファイバの特徴を列挙している。詳しくは、表1Aおよび1Bの各実施例について、中央コア領域1の相対屈折率差分Δ1、アルファ、および外径r1、第1の内側クラッド領域2の相対屈折率差分Δ2および外径r2、第2の内側クラッド領域3の相対屈折率差分Δ3および体積V3、外側クラッド領域4の相対屈折率差分Δ4および、外側クラッド領域3の内径r3と30マイクロメートルの半径方向距離との間で計算された体積V4、およびモート体積比が下記に述べられている。
Claims (10)
- シングルモード光ファイバにおいて、
外径r1および相対屈折率Δ1を有する中央コア領域;および
クラッド領域であって、(i)6マイクロメートル超の外径r2および相対屈折率Δ2を有し、0.3≦r1/r2≦0.85である第1の内側クラッド領域と、(ii)9マイクロメートル超の外径r3および最小相対屈折率Δ3を有する第2の内側クラッド領域であって、半径の増加と共に負の方向に増加する相対屈折率差分を有する少なくとも1つの領域を持つ第2の内側クラッド領域と、(iii)前記内側クラッド領域を取り囲み、相対屈折率Δ4を有する外側クラッド領域とを含み、Δ1>Δ2>Δ3、Δ3<Δ4であるクラッド領域;
を備えた光ファイバ。 - 0.15≦|Δ4−Δ3|≦0.7、およびΔ3とΔ2の間の絶対差が0.03より大きく、前記第2の内側クラッド領域の絶対値V3が35%Δμm2≦V3≦105%Δμm2であり、前記ファイバが、1260nm以下の22mケーブルカットオフを示し、1300nm≦λ0≦1324nmであるゼロ分散波長λ0を有する、請求項1記載の光ファイバ。
- (i) 0.20≦|Δ4−Δ3|≦0.7、および/または
(ii) r3から少なくとも30マイクロメートルの半径まで延在する長さについて、Δ4>Δ2、および/または
(iii) 0.33≦r1/r2、
である、請求項1または2記載の光ファイバ。 - 前記第1の内側クラッド領域がフッ素とゲルマニアを実質的に含まない、請求項1から3いずれか1項記載の光ファイバ。
- 前記第2の内側クラッド領域の外径と30μmの半径方向距離との間で計算された、前記外側クラッド領域のプロファイル体積V4が、
- 20mmの半径のマンドレルに巻き付けられたときに、0.75dB/turn未満の曲げ損失を示し、6.6と7.5の間のMAC数を示す、請求項1記載の光ファイバ。
- 15mmの半径のマンドレルに巻き付けられたときに、1dB/turn未満の曲げ損失を示す、請求項1または6記載の光ファイバ。
- 1.5≧β≧0.25、式中、
- 1.1≧β≧0.5である、請求項8記載の光ファイバ。
- 50≧αt、式中、αtはトレンチのアルファパラメータであり、好ましくは、5≧αt≧0.5である、請求項1から9いずれか1項記載の光ファイバ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201161564902P | 2011-11-30 | 2011-11-30 | |
US61/564,902 | 2011-11-30 | ||
PCT/US2012/066949 WO2013082217A1 (en) | 2011-11-30 | 2012-11-29 | Low bend loss optical fiber |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2015503122A true JP2015503122A (ja) | 2015-01-29 |
JP6218744B2 JP6218744B2 (ja) | 2017-10-25 |
Family
ID=47459118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2014544860A Active JP6218744B2 (ja) | 2011-11-30 | 2012-11-29 | 低曲げ損失光ファイバ |
Country Status (10)
Country | Link |
---|---|
US (2) | US8588569B2 (ja) |
EP (1) | EP2786185B1 (ja) |
JP (1) | JP6218744B2 (ja) |
KR (1) | KR20140097338A (ja) |
CN (1) | CN104254793B (ja) |
BR (1) | BR112014013128A2 (ja) |
DK (1) | DK2786185T3 (ja) |
IN (1) | IN2014DN04698A (ja) |
RU (1) | RU2014126430A (ja) |
WO (1) | WO2013082217A1 (ja) |
Cited By (4)
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JP2013088818A (ja) * | 2011-10-17 | 2013-05-13 | Sehf-Korea Co Ltd | 曲げ損失強化光ファイバ |
JP2018189914A (ja) * | 2017-05-11 | 2018-11-29 | 住友電気工業株式会社 | 光ファイバ |
WO2020121915A1 (ja) * | 2018-12-12 | 2020-06-18 | 古河電気工業株式会社 | 光ファイバおよび光ファイバの製造方法 |
JP2020530586A (ja) * | 2017-08-08 | 2020-10-22 | コーニング インコーポレイテッド | 塩素ドープコアおよびオフセットトレンチを有する低曲げ損失光ファイバ |
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2012
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- 2012-11-29 RU RU2014126430A patent/RU2014126430A/ru not_active Application Discontinuation
- 2012-11-29 KR KR1020147015711A patent/KR20140097338A/ko not_active Application Discontinuation
- 2012-11-29 EP EP12808572.7A patent/EP2786185B1/en active Active
- 2012-11-29 BR BR112014013128A patent/BR112014013128A2/pt not_active Application Discontinuation
- 2012-11-29 DK DK12808572.7T patent/DK2786185T3/en active
- 2012-11-29 CN CN201280068372.7A patent/CN104254793B/zh active Active
- 2012-11-29 IN IN4698DEN2014 patent/IN2014DN04698A/en unknown
- 2012-11-29 WO PCT/US2012/066949 patent/WO2013082217A1/en active Application Filing
- 2012-11-29 JP JP2014544860A patent/JP6218744B2/ja active Active
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JP2013088818A (ja) * | 2011-10-17 | 2013-05-13 | Sehf-Korea Co Ltd | 曲げ損失強化光ファイバ |
JP2018189914A (ja) * | 2017-05-11 | 2018-11-29 | 住友電気工業株式会社 | 光ファイバ |
RU2771518C2 (ru) * | 2017-05-11 | 2022-05-05 | Сумитомо Электрик Индастриз, Лтд. | Оптическое волокно |
JP7069566B2 (ja) | 2017-05-11 | 2022-05-18 | 住友電気工業株式会社 | 光ファイバ |
JP2020530586A (ja) * | 2017-08-08 | 2020-10-22 | コーニング インコーポレイテッド | 塩素ドープコアおよびオフセットトレンチを有する低曲げ損失光ファイバ |
JP7187108B2 (ja) | 2017-08-08 | 2022-12-12 | コーニング インコーポレイテッド | 塩素ドープコアおよびオフセットトレンチを有する低曲げ損失光ファイバ |
WO2020121915A1 (ja) * | 2018-12-12 | 2020-06-18 | 古河電気工業株式会社 | 光ファイバおよび光ファイバの製造方法 |
JPWO2020121915A1 (ja) * | 2018-12-12 | 2021-10-28 | 古河電気工業株式会社 | 光ファイバおよび光ファイバの製造方法 |
US11506837B2 (en) | 2018-12-12 | 2022-11-22 | Furukawa Electric Co., Ltd. | Optical fiber and method for manufacturing optical fiber |
JP7371011B2 (ja) | 2018-12-12 | 2023-10-30 | 古河電気工業株式会社 | 光ファイバおよび光ファイバの製造方法 |
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IN2014DN04698A (ja) | 2015-05-15 |
US8953917B2 (en) | 2015-02-10 |
WO2013082217A1 (en) | 2013-06-06 |
JP6218744B2 (ja) | 2017-10-25 |
EP2786185A1 (en) | 2014-10-08 |
CN104254793A (zh) | 2014-12-31 |
CN104254793B (zh) | 2019-07-09 |
US20130136405A1 (en) | 2013-05-30 |
RU2014126430A (ru) | 2016-01-27 |
BR112014013128A2 (pt) | 2017-06-13 |
US8588569B2 (en) | 2013-11-19 |
DK2786185T3 (en) | 2016-09-26 |
KR20140097338A (ko) | 2014-08-06 |
US20130136407A1 (en) | 2013-05-30 |
EP2786185B1 (en) | 2016-06-15 |
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