JP2019144531A - 温度及び歪みの同時測定のための光ファイバ - Google Patents
温度及び歪みの同時測定のための光ファイバ Download PDFInfo
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- 229910052731 fluorine Inorganic materials 0.000 claims description 4
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- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 2
- 239000011248 coating agent Substances 0.000 claims description 2
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- JKWMSGQKBLHBQQ-UHFFFAOYSA-N diboron trioxide Chemical compound O=BOB=O JKWMSGQKBLHBQQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052810 boron oxide Inorganic materials 0.000 claims 1
- 125000001153 fluoro group Chemical group F* 0.000 claims 1
- 239000007789 gas Substances 0.000 description 5
- 239000000203 mixture Substances 0.000 description 5
- 238000000926 separation method Methods 0.000 description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 4
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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
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in 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
- C03B37/01262—Depositing additional preform material as liquids or solutions, e.g. solution doping of preform tubes or rods
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C13/00—Fibre or filament compositions
- C03C13/04—Fibre optics, e.g. core and clad fibre compositions
- C03C13/045—Silica-containing oxide glass compositions
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L1/00—Measuring force or stress, in general
- G01L1/24—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet
- G01L1/242—Measuring force or stress, in general by measuring variations of optical properties of material when it is stressed, e.g. by photoelastic stress analysis using infrared, visible light, ultraviolet the material being 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
- C03C2213/00—Glass fibres or filaments
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K11/00—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00
- G01K11/32—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres
- G01K11/322—Measuring temperature based upon physical or chemical changes not covered by groups G01K3/00, G01K5/00, G01K7/00 or G01K9/00 using changes in transmittance, scattering or luminescence in optical fibres using Brillouin scattering
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Optics & Photonics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
- Length Measuring Devices By Optical Means (AREA)
- Optical Transform (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Glass Compositions (AREA)
Abstract
Description
この実施例では、(そのシミュレーションされたブリルアン散乱プロファイルは図2Bに示される)図2Aに示すドーパントプロファイルは、実際のブリルアン散乱を測定するように実際に照射を受けた。実際のプロファイルは、図4に示され、主要ピークの約97%の強度を有し10.8GHzより高い周波数に位置する強ピークを示す。
Claims (12)
- 光ファイバのコアにおいて複数のドーパント濃度プロファイルを備える光ファイバであって、前記複数のドーパント濃度プロファイルが第1のドーパント濃度プロファイル及び第2のドーパント濃度プロファイルを含み、前記第1のドーパント濃度プロファイルがそのベース屈折率を上回るように前記コアの屈折率を増加させる第1のドーパントから取得され、前記第2のドーパント濃度プロファイルがそのベース屈折率を下回るように前記コアの屈折率を低下させる第2のドーパントから取得され、
前記第1のドーパント濃度及び前記第2のドーパント濃度が段階的に各々変動し、前記第2のドーパント濃度に対する前記第1のドーパント濃度の割合が所与の波長における基本光学モードと複数の音響モードとの相互作用をもたらすように操作可能であり、それによって、一次ピークのブリルアン散乱強度に対する二次、三次又は四次ピークのブリルアン散乱強度の割合をブリルアン散乱スペクトルにおいて0.4より大きくなるように増加させる、光ファイバ。 - 前記光ファイバが単一モードファイバ又は複数モード光ファイバである、請求項1に記載の光ファイバ。
- 前記所与の波長が400から2100ナノメートルで変動する、請求項1に記載の光ファイバ。
- 前記第1のドーパントがゲルマニウム、五酸化リン、チタニア、アルミナ又はそれらの組合せである、請求項1に記載の光ファイバ。
- 前記第2のドーパントがフッ素、ホウ素酸化物又はそれらの組合せである、請求項1に記載の光ファイバ。
- 一次ピークのブリルアン散乱強度に対する二次、三次又は四次ピークのブリルアン散乱強度の前記割合が0.5より大きい、請求項1に記載の光ファイバ。
- 一次ピークのブリルアン散乱強度に対する二次、三次又は四次ピークのブリルアン散乱強度の前記割合が0.75より大きい、請求項1に記載の光ファイバ。
- 前記第1のドーパント濃度及び前記第2のドーパント濃度が前記コアの中央長軸に対して双方とも対称的である、請求項1に記載の光ファイバ。
- 前記第1のドーパント濃度及び前記第2のドーパント濃度の段階的な変動が、前記第1のドーパント濃度及び前記第2のドーパント濃度の各々において3以上の急激な増加及び3以上の急激な減少を含む、請求項1に記載の光ファイバ。
- 前記第1のドーパント濃度及び前記第2のドーパント濃度の段階的な変動が、前記第1のドーパント濃度及び前記第2のドーパント濃度の各々において4以上の急激な増加及び4以上の急激な減少を含む、請求項1に記載の光ファイバ。
- 単一の光ファイバが温度及び歪みを同時に測定するセンサとして用いられる、請求項1に記載の光ファイバ。
- 第1のドーパント及び第2のドーパントでガラス管の内面をコーティングするステップと、
固体プリフォームを形成するように前記ガラス管を取り潰すステップと、
光ファイバを形成するように前記固体プリフォームを引き込むステップとを備え、前記光ファイバにおいて、前記第1のドーパント濃度及び前記第2のドーパント濃度が段階的に各々変動し、前記第2のドーパント濃度に対する前記第1のドーパント濃度の割合が所与の波長における基本光学モードと複数の音響モードとの相互作用をもたらすように操作可能であり、それによって、一次ピークのブリルアン散乱強度に対する二次、三次又は四次ピークのブリルアン散乱強度の割合をブリルアン散乱スペクトルにおいて0.4より大きくなるように増加させる、方法。
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US201762598515P | 2017-12-14 | 2017-12-14 | |
US62/598,515 | 2017-12-14 | ||
US16/129,159 | 2018-09-12 | ||
US16/129,159 US10401563B2 (en) | 2017-12-14 | 2018-09-12 | Optical fibers for simultaneous measurement of temperature and strain |
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JP2019144531A true JP2019144531A (ja) | 2019-08-29 |
JP6878384B2 JP6878384B2 (ja) | 2021-05-26 |
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US (1) | US10401563B2 (ja) |
EP (1) | EP3499202B1 (ja) |
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US11336073B2 (en) | 2018-11-29 | 2022-05-17 | Ofs Fitel, Llc | Brillouin dynamic grating generation using dual-Brillouin-peak optical fiber |
CN114252141B (zh) * | 2021-12-13 | 2022-12-13 | 江南大学 | 基于光纤拍频技术的双参数检测数字传感系统及方法 |
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WO2006011261A1 (ja) * | 2004-07-26 | 2006-02-02 | Matsushita Electric Industrial Co., Ltd. | 画像処理方法、画像処理装置および画像処理プログラム |
US20060185397A1 (en) * | 2005-02-22 | 2006-08-24 | Furukawa Electric North America, Inc. | Multimode optical fiber and method for manufacturing same |
CN101389989B (zh) * | 2006-06-30 | 2010-08-18 | 古河电气工业株式会社 | 光纤 |
JP4721359B2 (ja) * | 2006-09-12 | 2011-07-13 | 日東電工株式会社 | 透明導電性積層体及びそれを備えたタッチパネル |
EP2110651B1 (en) * | 2008-04-18 | 2017-06-07 | OZ Optics Ltd. | Method and system for simultaneous measurement of strain and temperature |
US8744782B2 (en) * | 2010-11-16 | 2014-06-03 | Corning Incorporated | System and method for simultaneously determining strain and temperature characteristics of an object |
EP2805139B1 (en) * | 2012-01-19 | 2018-11-07 | Draka Comteq BV | Temperature and strain sensing optical fiber and temperature and strain sensor |
FR2994035B1 (fr) * | 2012-07-24 | 2014-08-08 | Onera (Off Nat Aerospatiale) | Amplificateur a fibre optique a seuil brillouin eleve et methode de fabrication d'un tel amplificateur |
JP6165821B2 (ja) * | 2014-11-03 | 2017-07-19 | オーエフエス ファイテル,エルエルシー | 分布型ブリルアンセンサー |
CN104865637B (zh) * | 2015-06-08 | 2017-11-17 | 华中科技大学 | 一种受激布里渊散射效应增强型光纤 |
CN105865655B (zh) * | 2016-05-25 | 2018-09-07 | 华中科技大学 | 一种基于光纤声光模互作用的温度和应变同时测量方法 |
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US10401563B2 (en) | 2019-09-03 |
EP3499202B1 (en) | 2021-11-03 |
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