JP4777884B2 - 単偏光光ファイバおよびシステム並びにそれを製造する方法 - Google Patents
単偏光光ファイバおよびシステム並びにそれを製造する方法 Download PDFInfo
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- JP4777884B2 JP4777884B2 JP2006517207A JP2006517207A JP4777884B2 JP 4777884 B2 JP4777884 B2 JP 4777884B2 JP 2006517207 A JP2006517207 A JP 2006517207A JP 2006517207 A JP2006517207 A JP 2006517207A JP 4777884 B2 JP4777884 B2 JP 4777884B2
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- 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
- C03B37/02—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor
- C03B37/025—Manufacture of glass fibres or filaments by drawing or extruding, e.g. direct drawing of molten glass from nozzles; Cooling fins therefor from reheated softened tubes, rods, fibres or filaments, e.g. drawing fibres from preforms
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
- C03B37/02781—Hollow fibres, e.g. holey fibres
-
- 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
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
- C03B37/01217—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube for making preforms of polarisation-maintaining optical fibres
-
- 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
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01228—Removal of preform material
- C03B37/01234—Removal of preform material to form longitudinal grooves, e.g. by chamfering
-
- 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
- G02B6/024—Optical fibres with cladding with or without a coating with polarisation maintaining properties
-
- 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 - +
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
- C03B2203/302—Non-circular core cross-sections
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/08—Sub-atmospheric pressure applied, e.g. vacuum
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2205/00—Fibre drawing or extruding details
- C03B2205/10—Fibre drawing or extruding details pressurised
-
- 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
-
- 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
- G02B6/02295—Microstructured optical fibre
- G02B6/02314—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes
- G02B6/02342—Plurality of longitudinal structures extending along optical fibre axis, e.g. holes characterised by cladding features, i.e. light confining region
- G02B6/02366—Single ring of structures, e.g. "air clad"
-
- 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
- G02B6/0281—Graded index region forming part of the central core segment, e.g. alpha profile, triangular, trapezoidal core
-
- 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
- G02B6/03655—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
- G02B6/03694—Multiple layers differing in properties other than the refractive index, e.g. attenuation, diffusion, stress properties
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Description
図7に示した断面構造を有する、本発明による第1の代表的な単偏光ファイバを製造した。ファイバ120は、約5.33マイクロメートルの平均直径d avg、約7.75マイクロメートルの最大寸法A、約2.9マイクロメートルの最小寸法Bを有する中央コア34を有し、第1のアスペクト比A/Bが約2.7であり、中央コアデルタΔ1が1.1%であり、アルファ・プロファイルが約2のαを有している。孔24,26は、一部が環状領域32に含まれ、一部がクラッド31に含まれていた。孔24,26は、約8.3マイクロメートルの平均直径を有した。環状領域32にはフッ素がドープされ、それによって、純粋なシリカのクラッド30に対して屈折率が低くなっている。環状領域32の相対屈折率、Δ2は−0.4%であり、環状領域32の外径Dは約16マイクロメートルである。この実施の形態において、孔24,26は、中央コア34の側面に実質的に接触している。例えば、単偏光ファイバ120を検査し、これは、978nmの波長で、1.51mの長さに亘り、約38.6dBの減衰比ERを示した。ERは、SPB48において約15であった。ファイバのビート長は4.21mmであることが分かった。減衰は、1.45mの長さにおいて978nmで0.027dB/mであると測定された。
長手方向に沿った(実験1の長さから間隔がおかれた)同じファイバの他の部分も実験2および3で検査して、わずかに異なる性能結果が得られた。ファイバの長さに沿った性質のこの変動は主に、製造ファイバにおいてずっと良好に制御されるであろう、試作ファイバにおけるプロセス制御の変動によるものであった。
さらに別の実験試料が、実験4として表2に示されている。この実験において、コアデルタ、Δ1は2.0%であり、Δ2は−0.4%であった。この実験において、アスペクト比AR1は約3.2であり、平均コア直径d avgは約4マイクロメートル({A+B}/2)であった。平均孔直径および他のファイバのパラメータは実験1と同様であった。この実験により示されたように、1.1%と比較して、中央コアの相対屈折率を2.0%に上昇させると、単偏光(SP)帯域幅が42nmに増加した。
p2は第2の偏光のパワーであり、
p1は第1の偏光のパワーである。
24,26 孔
30 クラッド
32 環状領域
34 中央コア
40,140,240 システム
42 光学成分
44 ハウジング
Claims (4)
- 最小寸法(B)より大きい最大寸法(A)および実質的に楕円の形状を有する中央コア、および該中央コアの各反対側に位置した少なくとも1つの気孔を有してなる光ファイバであって、当該光ファイバが、動作波長範囲内で単偏光モードを支持すること、前記中央コアが、フッ素ドープ・シリカの環状領域により取り囲まれており、A/Bと定義される第1のアスペクト比が1.5と8の間にあって、前記最大寸法(A)と前記最小寸法(B)との平均寸法が、3μmと12μmとの間にあること、
前記気孔が、前記中央コアから3μm以内に位置する孔の縁を有しており、その横断面の最大寸法が、1μmと15μmとの間にあること、
前記環状領域が、その外径が10μmと25μmとの間にあり、クラッド層に対して−0.2%から−0.6%のデルタを有し、
前記中央コアがクラッド層に対して0.5%から2.5%のデルタを有することを特徴とする光ファイバ。 - 前記気孔が、該気孔の中心を通る線が前記最小寸法(B)に実質的にアライメントされているように位置していることを特徴とする請求項1記載の光ファイバ。
- 15dB以上の、単偏光波長帯域の減衰比(ER)であって、当該減衰比(ER)が、式:ER=10×log(p1/p2)(但し、p1:第1の偏光パワー;p2:第2の偏光パワー)で定義されるもの、を有することを特徴とする請求項1記載の光ファイバ。
- 最小寸法(B)より大きい最大寸法(A)および実質的に楕円の形状を有する中央コア、および該中央コアの各反対側に位置した少なくとも1つの気孔を有してなる光ファイバであって、当該光ファイバが、動作波長範囲内で単偏光モードを支持すること、前記中央コアが、フッ素ドープ・シリカの環状領域により取り囲まれており、A/Bと定義される第1のアスペクト比が2と5の間にあって、前記最大寸法(A)と前記最小寸法(B)との平均寸法が、3μmと12μmとの間にあること、
前記気孔が、前記中央コアから3μm以内に位置する孔の縁を有しており、その横断面の最大寸法が、1μmと15μmとの間にあること、
前記環状領域が、その外径が10μmと25μmとの間にあり、クラッド層に対して−0.2%から−0.6%のデルタを有し、
前記中央コアが、クラッド層に対して0.5%から2.5%のデルタを有することを特徴とする光ファイバ。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US47989203P | 2003-06-19 | 2003-06-19 | |
US60/479,892 | 2003-06-19 | ||
PCT/US2004/018260 WO2004113978A1 (en) | 2003-06-19 | 2004-06-09 | Single polarization optical fiber and system and method for producing same |
Publications (2)
Publication Number | Publication Date |
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JP2006528367A JP2006528367A (ja) | 2006-12-14 |
JP4777884B2 true JP4777884B2 (ja) | 2011-09-21 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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JP2006517207A Expired - Fee Related JP4777884B2 (ja) | 2003-06-19 | 2004-06-09 | 単偏光光ファイバおよびシステム並びにそれを製造する方法 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7194172B2 (ja) |
EP (1) | EP1636619B1 (ja) |
JP (1) | JP4777884B2 (ja) |
CN (1) | CN100388030C (ja) |
DE (1) | DE602004022669D1 (ja) |
WO (1) | WO2004113978A1 (ja) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6970632B2 (en) * | 2004-05-03 | 2005-11-29 | Corning Incorporated | Solid type single polarization fiber and apparatus |
US7280728B2 (en) * | 2004-10-22 | 2007-10-09 | Corning Incorporated | Rare earth doped single polarization double clad optical fiber with plurality of air holes |
US7236672B2 (en) | 2005-03-30 | 2007-06-26 | Corning Incorporated | Optical systems utilizing optical fibers transmitting high power signal and a method of operating such systems |
US20080118214A1 (en) * | 2006-04-20 | 2008-05-22 | Peng Chen | Optical fiber for detecting stress and associated method |
WO2008007743A1 (fr) | 2006-07-12 | 2008-01-17 | The Furukawa Electric Co., Ltd. | Fibre optique conservant la polarisation, procédé de fabrication d'un connecteur à fibre optique conservant la polarisation, et connecteur à fibre optique conservant la polarisation |
RU2437129C1 (ru) * | 2010-03-24 | 2011-12-20 | Закрытое акционерное общество "Профотек" | Способ изготовления двулучепреломляющего микроструктурного оптического волокна |
DK2630528T3 (en) * | 2010-10-22 | 2023-04-17 | Ipg Photonics Corp | Fiber with asymmetrical core and method for manufacturing same |
JP2012189804A (ja) * | 2011-03-10 | 2012-10-04 | Sumitomo Electric Ind Ltd | 光ファイバ |
JP5719960B1 (ja) * | 2014-07-31 | 2015-05-20 | 湖北工業株式会社 | マルチコアファイバと偏波面保存ファイバの光接続部品および光接続部品の製造方法 |
CN106646733B (zh) * | 2015-10-29 | 2019-05-03 | 上海亨通光电科技有限公司 | 一种椭圆保偏光纤及其制备方法 |
CN105700070B (zh) * | 2016-03-08 | 2019-06-28 | 武汉理工大学 | 一种高双折射保偏光纤 |
DE102016118391B4 (de) * | 2016-09-28 | 2019-03-14 | Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. | Kurzpulslasersystem |
CN107300738B (zh) * | 2017-06-27 | 2024-05-24 | 中国电子科技集团公司电子科学研究院 | 一种光纤 |
CN111443424B (zh) * | 2020-05-08 | 2021-05-28 | 长飞光纤光缆股份有限公司 | 一种抗辐射保偏光纤 |
CN113777697A (zh) * | 2021-08-24 | 2021-12-10 | 北京科技大学顺德研究生院 | 一种支持14模式的低串扰和易mimo处理的空气孔少模光纤 |
Citations (2)
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JPS61267707A (ja) * | 1985-05-22 | 1986-11-27 | Sumitomo Electric Ind Ltd | サイドトンネル型定偏波光フアイバ |
JPH02157133A (ja) * | 1988-12-08 | 1990-06-15 | Hitachi Cable Ltd | 楕円コア型偏波面保存光ファイバの製造方法 |
Family Cites Families (11)
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US4274854A (en) | 1978-01-13 | 1981-06-23 | Bell Telephone Laboratories, Incorporated | Polarization-preserving optical fiber |
US4184859A (en) | 1978-06-09 | 1980-01-22 | International Telephone And Telegraph Corporation | Method of fabricating an elliptical core single mode fiber |
US4307938A (en) | 1979-06-19 | 1981-12-29 | Andrew Corporation | Dielectric waveguide with elongate cross-section |
US4478489A (en) | 1981-04-13 | 1984-10-23 | Corning Glass Works | Polarization retaining single-mode optical waveguide |
JPS595004A (ja) * | 1982-06-30 | 1984-01-11 | 松下電工株式会社 | フリツチの製法 |
JPS5950043A (ja) * | 1982-09-17 | 1984-03-22 | Sumitomo Electric Ind Ltd | 定偏波フアイバの製造方法 |
JPS61146725A (ja) * | 1984-12-20 | 1986-07-04 | Sumitomo Electric Ind Ltd | サイドトンネル形定偏波フアイバの製造方法 |
US5032001A (en) * | 1990-03-09 | 1991-07-16 | At&T Bell Laboratories | Optical fiber having enhanced bend resistance |
US5841131A (en) * | 1997-07-07 | 1998-11-24 | Schlumberger Technology Corporation | Fiber optic pressure transducers and pressure sensing system incorporating same |
US6393178B2 (en) | 2000-03-04 | 2002-05-21 | Lucent Technologies Inc. | Microstructure optical fibers for dispersion management in optical communication systems |
US7120340B2 (en) | 2003-06-19 | 2006-10-10 | Corning Incorporated | Single polarization optical fiber laser and amplifier |
-
2004
- 2004-06-09 EP EP04776389A patent/EP1636619B1/en not_active Expired - Fee Related
- 2004-06-09 DE DE602004022669T patent/DE602004022669D1/de not_active Expired - Fee Related
- 2004-06-09 WO PCT/US2004/018260 patent/WO2004113978A1/en active Application Filing
- 2004-06-09 CN CNB2004800170168A patent/CN100388030C/zh not_active Expired - Fee Related
- 2004-06-09 JP JP2006517207A patent/JP4777884B2/ja not_active Expired - Fee Related
- 2004-06-09 US US10/864,732 patent/US7194172B2/en not_active Expired - Fee Related
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61267707A (ja) * | 1985-05-22 | 1986-11-27 | Sumitomo Electric Ind Ltd | サイドトンネル型定偏波光フアイバ |
JPH02157133A (ja) * | 1988-12-08 | 1990-06-15 | Hitachi Cable Ltd | 楕円コア型偏波面保存光ファイバの製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US7194172B2 (en) | 2007-03-20 |
EP1636619B1 (en) | 2009-08-19 |
WO2004113978A1 (en) | 2004-12-29 |
DE602004022669D1 (de) | 2009-10-01 |
EP1636619A1 (en) | 2006-03-22 |
CN100388030C (zh) | 2008-05-14 |
JP2006528367A (ja) | 2006-12-14 |
CN1809771A (zh) | 2006-07-26 |
US20040258379A1 (en) | 2004-12-23 |
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