JP6481688B2 - 光伝送システム - Google Patents
光伝送システム Download PDFInfo
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- JP6481688B2 JP6481688B2 JP2016527848A JP2016527848A JP6481688B2 JP 6481688 B2 JP6481688 B2 JP 6481688B2 JP 2016527848 A JP2016527848 A JP 2016527848A JP 2016527848 A JP2016527848 A JP 2016527848A JP 6481688 B2 JP6481688 B2 JP 6481688B2
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- 230000005540 biological transmission Effects 0.000 title claims description 106
- 230000003287 optical effect Effects 0.000 title claims description 50
- 239000013307 optical fiber Substances 0.000 claims description 83
- 238000001069 Raman spectroscopy Methods 0.000 claims description 54
- 230000003321 amplification Effects 0.000 claims description 42
- 238000003199 nucleic acid amplification method Methods 0.000 claims description 42
- 238000005253 cladding Methods 0.000 claims description 22
- 238000005086 pumping Methods 0.000 claims description 22
- 239000000835 fiber Substances 0.000 claims description 12
- 230000005284 excitation Effects 0.000 claims description 6
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000000052 comparative effect Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 4
- 230000010363 phase shift Effects 0.000 description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000001186 cumulative effect Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 230000001902 propagating effect Effects 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 102000030938 small GTPase Human genes 0.000 description 1
- 108060007624 small GTPase Proteins 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/30—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects
- H01S3/302—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range using scattering effects, e.g. stimulated Brillouin or Raman effects in an optical fibre
-
- 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
- G02B6/02014—Effective area greater than 60 square microns in the C band, i.e. 1530-1565 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
-
- 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
- H04B10/2543—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to fibre non-linearities, e.g. Kerr effect
-
- 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
- H04B10/2543—Arrangements specific to fibre transmission for the reduction or elimination of distortion or dispersion due to fibre non-linearities, e.g. Kerr effect
- H04B10/255—Self-phase modulation [SPM]
-
- 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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
-
- 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
- H04B10/29—Repeaters
- H04B10/291—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form
- H04B10/2912—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing
- H04B10/2916—Repeaters in which processing or amplification is carried out without conversion of the main signal from optical form characterised by the medium used for amplification or processing using Raman or Brillouin amplifiers
-
- 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
- G02B6/02014—Effective area greater than 60 square microns in the C band, i.e. 1530-1565 nm
- G02B6/02019—Effective area greater than 90 square microns in the C band, i.e. 1530-1565 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
- G02B6/03622—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 - +
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06754—Fibre amplifiers
- H01S3/06758—Tandem amplifiers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/14—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range characterised by the material used as the active medium
- H01S3/16—Solid materials
- H01S3/1601—Solid materials characterised by an active (lasing) ion
- H01S3/1603—Solid materials characterised by an active (lasing) ion rare earth
- H01S3/1608—Solid materials characterised by an active (lasing) ion rare earth erbium
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Optics & Photonics (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Plasma & Fusion (AREA)
- Nonlinear Science (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Communication System (AREA)
Description
最初に本願発明の実施態様を列記して説明する。
以下、本実施形態に係る光ファイバおよびそれを含む光伝送システムの具体的な構造を、添付図面を参照しながら詳細に説明する。なお、本発明はこれらの例示に限定されるものではなく、特許請求の範囲によって示され、特許請求の範囲と均等の意味および範囲内での全ての変更が含まれることが意図される。
Claims (11)
- 光ファイバを用いた光ファイバ伝送路と、前記光ファイバ伝送路により伝送される信号光を増幅するEr添加光ファイバ増幅器と、前記光ファイバ伝送路により伝送される信号光をラマン増幅するためのラマン増幅用励起光源と、を備えた光伝送システムであって、
前記光ファイバは、
所定軸に沿って伸びるコアと、前記コアの外周に設けられたクラッドと、を備え、
波長1450nmにおける実効断面積をAeff1450 [μm2]とし、波長1450nmにおける伝送ロスをα1450 [/km]とし、波長1550nmにおける伝送ロスをα1550_dB [dB/km]としたときに、前記コアおよび前記クラッドのそれぞれが、
を満たすよう構成され、
ラマン増幅用の励起光波長における前記光ファイバの実効断面積をAeffP [μm2]とし、前記ラマン増幅用の励起光波長における前記光ファイバ伝送路の伝送ロスをαP[/km]とし、信号光波長における前記光ファイバ伝送路の伝送ロスをαSdB [dB/km]とし、前記光ファイバ伝送路のスパン長をL [km]とし、励起光パワーをPPump [mW]としたときに、
を満たすよう構成されている光伝送システム。 - 前記光ファイバは、
波長1550nmにおける伝送ロスα1550_dBが、0.17dB/km以下である請求項1に記載の光伝送システム。 - 前記光ファイバは、
波長1550nmにおける実効断面積Aeff1550が、70〜160μm2である請求項1に記載の光伝送システム。 - 前記光ファイバは、
波長1450nmにおける伝送ロスα1450_dBが、0.19〜0.22dB/km以下である請求項1〜4の何れか一項に記載の光伝送システム。 - 前記光ファイバは、
波長1450nmにおける実効断面積Aeff1450が、60〜140μm2である請求項1〜4の何れか一項に記載の光伝送システム。 - 前記光ファイバは、
純シリカに対する前記コアの比屈折率差が、-0.1〜+0.1%である請求項1〜6の何れか一項に記載の光伝送システム。 - 前記光ファイバは、
前記クラッドの基準領域に対する前記コアの比屈折率差が、0.18〜0.45%であり、
前記コアの直径が、9〜15μmである請求項7に記載の光伝送システム。 - 前記光ファイバは、
ファイバカットオフ波長が、1600nm以下である請求項1〜8の何れか一項に記載の光伝送システム。 - 前記光ファイバは、
前記クラッドが、前記コアの外周面を取り囲む内クラッドと、前記内クラッドの外周面を取り囲む外クラッドとを含み、
前記外クラッドの屈折率が、前記コアの屈折率より小さく、かつ、前記内クラッドの屈折率より大きい請求項9に記載の光伝送システム。 - 前記光ファイバは、
前記コアの直径2aと前記内クラッドの外径2bとの比b/aが、3.0〜5.0である請求項10に記載の光伝送システム。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2014122100 | 2014-06-13 | ||
JP2014122100 | 2014-06-13 | ||
PCT/JP2015/066775 WO2015190533A1 (ja) | 2014-06-13 | 2015-06-10 | 光ファイバおよび光伝送システム |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2015190533A1 JPWO2015190533A1 (ja) | 2017-04-20 |
JP6481688B2 true JP6481688B2 (ja) | 2019-03-13 |
Family
ID=54833622
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2016527848A Active JP6481688B2 (ja) | 2014-06-13 | 2015-06-10 | 光伝送システム |
Country Status (6)
Country | Link |
---|---|
US (1) | US9905994B2 (ja) |
EP (1) | EP3156830B1 (ja) |
JP (1) | JP6481688B2 (ja) |
CN (1) | CN106461855B (ja) |
DK (1) | DK3156830T3 (ja) |
WO (1) | WO2015190533A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108885303B (zh) * | 2016-04-01 | 2020-09-01 | 株式会社藤仓 | 光纤及其制造方法 |
Family Cites Families (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4293156B2 (ja) * | 1999-04-13 | 2009-07-08 | 住友電気工業株式会社 | 光ファイバ及びそれを含む光通信システム |
JP2005017694A (ja) * | 2003-06-26 | 2005-01-20 | Furukawa Electric Co Ltd:The | 光ファイバおよび光ファイバケーブル |
US7689085B1 (en) * | 2009-01-30 | 2010-03-30 | Corning Incorporated | Large effective area fiber with GE-free core |
JP2011039109A (ja) * | 2009-08-06 | 2011-02-24 | Sumitomo Electric Ind Ltd | 光通信システム |
US8655133B2 (en) * | 2010-02-26 | 2014-02-18 | Sumitomo Electric Industries, Ltd. | Optical fiber and optical communication system including same |
CN102193140B (zh) * | 2010-02-26 | 2015-03-04 | 住友电气工业株式会社 | 光纤及包含光纤的光通信系统 |
US8538218B2 (en) * | 2010-03-10 | 2013-09-17 | Corning Incorporated | Unrepeatered long haul optical fiber transmission systems |
US7929818B1 (en) * | 2010-06-30 | 2011-04-19 | Corning Incorporated | Large effective area fiber with graded index GE-free core |
KR20130116009A (ko) * | 2012-04-12 | 2013-10-22 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 광섬유 |
WO2014038512A1 (ja) | 2012-09-04 | 2014-03-13 | 住友電気工業株式会社 | 光ファイバ |
-
2015
- 2015-06-10 DK DK15806187.9T patent/DK3156830T3/da active
- 2015-06-10 CN CN201580028615.8A patent/CN106461855B/zh active Active
- 2015-06-10 JP JP2016527848A patent/JP6481688B2/ja active Active
- 2015-06-10 WO PCT/JP2015/066775 patent/WO2015190533A1/ja active Application Filing
- 2015-06-10 EP EP15806187.9A patent/EP3156830B1/en active Active
-
2016
- 2016-11-28 US US15/361,629 patent/US9905994B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
CN106461855A (zh) | 2017-02-22 |
US20170077670A1 (en) | 2017-03-16 |
JPWO2015190533A1 (ja) | 2017-04-20 |
EP3156830A1 (en) | 2017-04-19 |
US9905994B2 (en) | 2018-02-27 |
WO2015190533A1 (ja) | 2015-12-17 |
DK3156830T3 (da) | 2021-01-25 |
EP3156830B1 (en) | 2020-12-30 |
CN106461855B (zh) | 2020-01-24 |
EP3156830A4 (en) | 2017-07-05 |
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