JP5384200B2 - 海底用光ファイバ伝送システム - Google Patents
海底用光ファイバ伝送システム Download PDFInfo
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- JP5384200B2 JP5384200B2 JP2009127106A JP2009127106A JP5384200B2 JP 5384200 B2 JP5384200 B2 JP 5384200B2 JP 2009127106 A JP2009127106 A JP 2009127106A JP 2009127106 A JP2009127106 A JP 2009127106A JP 5384200 B2 JP5384200 B2 JP 5384200B2
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- Prior art keywords
- optical fiber
- dispersion coefficient
- cable
- dispersion
- fiber
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- 239000013307 optical fiber Substances 0.000 title claims description 57
- 230000005540 biological transmission Effects 0.000 title claims description 38
- 239000006185 dispersion Substances 0.000 claims description 82
- 238000005253 cladding Methods 0.000 claims description 6
- 230000010287 polarization Effects 0.000 claims description 2
- 239000011521 glass Substances 0.000 claims 2
- 239000000835 fiber Substances 0.000 description 65
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 16
- 239000000377 silicon dioxide Substances 0.000 description 8
- 238000009825 accumulation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052732 germanium Inorganic materials 0.000 description 2
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Images
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
- G02B6/02214—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
- G02B6/02252—Negative dispersion fibres at 1550 nm
- G02B6/02261—Dispersion compensating fibres, i.e. for compensating positive dispersion of other fibres
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/25—Arrangements specific to fibre transmission
- H04B10/2507—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion
- H04B10/2513—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion
- H04B10/2525—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to chromatic dispersion using dispersion-compensating 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
- 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
-
- 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
- G02B6/036—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 - + -
-
- 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
-
- 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
- G02B6/24—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
Landscapes
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Communication System (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Light Guides In General And Applications Therefor (AREA)
Description
本発明のよりよい理解のために、添付の図、および請求の範囲とにより以下に説明する。
伝送損失 : (66×0.185)+(34×0.235)=21.8dB
接合損失 : 0.04+0.11+0.3=0.45dB
径間あたりの全損失 = 22.25dB
伝送損失 : (57×0.185)+(43×0.2)=19.1dB
接合損失 : 0.04+0.05+0.12=0.21dB
径間100kmあたりの全損失=19.31dB
12 IDFファイバ
14 増幅器
15 分散補償ファイバ(DCF)
21 SLAファイバ
22 LALND
24 増幅器
Claims (12)
- ガラスコア、およびガラスクラッドからなり、コア部、溝部及びリング部を含む三重クラッド屈折率プロファイルを有する海底ケーブル用のステップインデックス型の光ファイバであって、伝送特性が、
分散係数 : −8から−17ps/nm−km、
分散勾配 : +0.03から+0.07ps/nm2−km、
有効断面積 : 40μm2から60μm2、
コアアルファ: 20以上、
であることを特徴とする光ファイバ。 - 前記有効断面積が45から55μm2であることを特徴とする請求項1に記載の光ファイバ。
- 偏波モード分散が0.04ps/km0.5、あるいはそれより小さいことを特徴とする請求項1に記載の光ファイバ。
- 少なくとも二対の光ファイバ伝送経路を含む海底ケーブル用光ファイバケーブルであって、前記伝送経路の各々は、増幅器に接続され、そして負分散係数の光ファイバに結合された正分散係数の光ファイバを含み、前記負分散係数の光ファイバは、コア部、溝部及びリング部を含む三重クラッド屈折率プロファイルを有するステップインデックス型の光ファイバであって、伝送特性が、
分散係数 : −8から−17ps/nm−km、
分散勾配 : +0.03から+0.07ps/nm2−km、
有効断面積 : 40μm2から60μm2、
コアアルファ: 20以上、
である、海底ケーブル用光ファイバケーブル。 - 前記正分散係数の光ファイバが少なくとも10ps/nm−kmの正分散係数を有することを特徴とする請求項4に記載の海底ケーブル用光ファイバケーブル。
- 前記正分散係数の光ファイバが少なくとも18ps/nm−kmの正分散係数を持つ光ファイバであることを特徴とする請求項5に記載の海底ケーブル用光ファイバケーブル。
- 前記正分散係数の光ファイバが少なくとも16ps/nm−kmの正分散係数を持つ光ファイバであることを特徴とする請求項5に記載の海底ケーブル用光ファイバケーブル。
- 前記正分散係数の光ファイバと前記負分散係数の光ファイバとを結合した全体の長さが少なくとも80kmの長さを有することを特徴とする請求項4に記載の海底ケーブル用光ファイバケーブル。
- 前記負分散係数の光ファイバケーブルが光ファイバ増幅器の入力部に結合されていることを特徴とする請求項8に記載の海底ケーブル用光ファイバケーブル。
- 前記正分散係数の光ファイバケーブルが光ファイバ増幅器の出力部に結合されていることを特徴とする請求項8に記載の海底ケーブル用光ファイバケーブル。
- 減衰が0.2dB/km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。
- 前記分散係数が−12から−15ps/nm−kmであることを特徴とする請求項1に記載の光ファイバ。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/156,234 US7565048B1 (en) | 2008-05-30 | 2008-05-30 | Undersea optical fiber transmission systems |
US12/156,234 | 2008-05-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2009288788A JP2009288788A (ja) | 2009-12-10 |
JP5384200B2 true JP5384200B2 (ja) | 2014-01-08 |
Family
ID=40872667
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2009127106A Active JP5384200B2 (ja) | 2008-05-30 | 2009-05-27 | 海底用光ファイバ伝送システム |
Country Status (5)
Country | Link |
---|---|
US (1) | US7565048B1 (ja) |
EP (1) | EP2128669A1 (ja) |
JP (1) | JP5384200B2 (ja) |
KR (1) | KR101639584B1 (ja) |
CN (1) | CN101592758A (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2015096938A (ja) * | 2013-10-11 | 2015-05-21 | 古河電気工業株式会社 | 光ファイバおよび光伝送システム |
DK3328419T3 (da) | 2015-07-30 | 2021-10-11 | Macrogenics Inc | Pd-1-bindingsmolekyler og fremgangsmåder til anvendelse deraf |
MY196756A (en) | 2015-12-14 | 2023-05-03 | Macrogenics Inc | Bispecific molecules having immunoreactivity with pd-1 and ctla-4, and methods of use thereof |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4852968A (en) * | 1986-08-08 | 1989-08-01 | American Telephone And Telegraph Company, At&T Bell Laboratories | Optical fiber comprising a refractive index trench |
US5553185A (en) | 1994-12-27 | 1996-09-03 | Corning Incorporated | Controlled dispersion optical waveguide |
CA2202586C (en) | 1996-04-15 | 2003-05-06 | Masashi Onishi | Dispersion compensating fiber and optical transmission system including the same |
US5878182A (en) | 1997-06-05 | 1999-03-02 | Lucent Technologies Inc. | Optical fiber having a low-dispersion slope in the erbium amplifier region |
US6317549B1 (en) | 1999-05-24 | 2001-11-13 | Lucent Technologies Inc. | Optical fiber having negative dispersion and low slope in the Erbium amplifier region |
RU2206113C2 (ru) * | 1999-07-27 | 2003-06-10 | Фудзикура Лтд. | Оптическое волокно со смещенной дисперсией |
US6424778B1 (en) * | 1999-09-29 | 2002-07-23 | Corning Incorporated | Optical fiber with large effective area and low dispersion slope for submarine applications |
US6941054B2 (en) * | 2000-08-31 | 2005-09-06 | Pirelli S.P.A. | Optical transmission link with low slope, raman amplified fiber |
JP2002232355A (ja) * | 2001-01-31 | 2002-08-16 | Kddi Submarine Cable Systems Inc | 光ファイバ伝送路 |
JP4413456B2 (ja) * | 2001-08-27 | 2010-02-10 | 古河電気工業株式会社 | 負分散光ファイバおよび該負分散光ファイバを用いた光伝送路 |
JP2003188822A (ja) * | 2001-10-10 | 2003-07-04 | Furukawa Electric Co Ltd:The | 光伝送路およびその光伝送路を用いた光伝送システム |
JP3960881B2 (ja) * | 2002-08-13 | 2007-08-15 | 古河電気工業株式会社 | 分散補償光ファイバ |
US6707976B1 (en) * | 2002-09-04 | 2004-03-16 | Fitel Usa Corporation | Inverse dispersion compensating fiber |
JP2004101841A (ja) * | 2002-09-09 | 2004-04-02 | Furukawa Electric Co Ltd:The | 分散シフト光ファイバ |
JP2004246111A (ja) * | 2003-02-14 | 2004-09-02 | Furukawa Electric Co Ltd:The | 負分散光ファイバ及びそれを用いた波長分割多重光伝送用線路 |
JP2004317817A (ja) * | 2003-04-16 | 2004-11-11 | Furukawa Electric Co Ltd:The | 光ファイバおよびそれを用いた光通信システム |
-
2008
- 2008-05-30 US US12/156,234 patent/US7565048B1/en active Active
-
2009
- 2009-05-05 EP EP09006143A patent/EP2128669A1/en not_active Ceased
- 2009-05-25 CN CNA2009101419295A patent/CN101592758A/zh active Pending
- 2009-05-27 JP JP2009127106A patent/JP5384200B2/ja active Active
- 2009-05-29 KR KR1020090047280A patent/KR101639584B1/ko active IP Right Grant
Also Published As
Publication number | Publication date |
---|---|
KR101639584B1 (ko) | 2016-07-22 |
JP2009288788A (ja) | 2009-12-10 |
CN101592758A (zh) | 2009-12-02 |
EP2128669A1 (en) | 2009-12-02 |
KR20090124990A (ko) | 2009-12-03 |
US7565048B1 (en) | 2009-07-21 |
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