JP7068484B2 - 光ファイバ母材の測定方法 - Google Patents
光ファイバ母材の測定方法 Download PDFInfo
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- JP7068484B2 JP7068484B2 JP2020547477A JP2020547477A JP7068484B2 JP 7068484 B2 JP7068484 B2 JP 7068484B2 JP 2020547477 A JP2020547477 A JP 2020547477A JP 2020547477 A JP2020547477 A JP 2020547477A JP 7068484 B2 JP7068484 B2 JP 7068484B2
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- 239000013307 optical fiber Substances 0.000 title claims description 100
- 239000000463 material Substances 0.000 title claims description 95
- 238000000691 measurement method Methods 0.000 title description 3
- 238000009826 distribution Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 18
- 230000001678 irradiating effect Effects 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 238000000151 deposition Methods 0.000 description 27
- 238000002347 injection Methods 0.000 description 22
- 239000007924 injection Substances 0.000 description 22
- 238000005259 measurement Methods 0.000 description 22
- 239000011521 glass Substances 0.000 description 21
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 20
- 239000001301 oxygen Substances 0.000 description 20
- 229910052760 oxygen Inorganic materials 0.000 description 20
- 239000010419 fine particle Substances 0.000 description 17
- VXEGSRKPIUDPQT-UHFFFAOYSA-N 4-[4-(4-methoxyphenyl)piperazin-1-yl]aniline Chemical compound C1=CC(OC)=CC=C1N1CCN(C=2C=CC(N)=CC=2)CC1 VXEGSRKPIUDPQT-UHFFFAOYSA-N 0.000 description 11
- 239000005049 silicon tetrachloride Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 10
- 239000001257 hydrogen Substances 0.000 description 9
- 229910052739 hydrogen Inorganic materials 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 8
- 230000008021 deposition Effects 0.000 description 8
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 6
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 5
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 4
- 239000001307 helium Substances 0.000 description 4
- 229910052734 helium Inorganic materials 0.000 description 4
- SWQJXJOGLNCZEY-UHFFFAOYSA-N helium atom Chemical compound [He] SWQJXJOGLNCZEY-UHFFFAOYSA-N 0.000 description 4
- 150000002431 hydrogen Chemical class 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000002994 raw material Substances 0.000 description 4
- IEXRMSFAVATTJX-UHFFFAOYSA-N tetrachlorogermane Chemical compound Cl[Ge](Cl)(Cl)Cl IEXRMSFAVATTJX-UHFFFAOYSA-N 0.000 description 4
- 229910052786 argon Inorganic materials 0.000 description 3
- 239000010953 base metal Substances 0.000 description 3
- 239000007858 starting material Substances 0.000 description 3
- YBMRDBCBODYGJE-UHFFFAOYSA-N germanium oxide Inorganic materials O=[Ge]=O YBMRDBCBODYGJE-UHFFFAOYSA-N 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- PVADDRMAFCOOPC-UHFFFAOYSA-N oxogermanium Chemical compound [Ge]=O PVADDRMAFCOOPC-UHFFFAOYSA-N 0.000 description 2
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000002019 doping agent Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000004017 vitrification Methods 0.000 description 1
Images
Classifications
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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
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/018—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD] by glass deposition on a glass substrate, e.g. by inside-, modified-, plasma-, or plasma modified- chemical vapour deposition [ICVD, MCVD, PCVD, PMCVD], i.e. by thin layer coating on the inside or outside of a glass tube or on a glass rod
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01413—Reactant delivery systems
- C03B37/0142—Reactant deposition burners
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01406—Deposition reactors therefor
-
- 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
- G01B11/08—Measuring arrangements characterised by the use of optical techniques for measuring diameters
-
- 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
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M11/00—Testing of optical apparatus; Testing structures by optical methods not otherwise provided for
- G01M11/30—Testing of optical devices, constituted by fibre optics or optical waveguides
- G01M11/37—Testing of optical devices, constituted by fibre optics or optical waveguides in which light is projected perpendicularly to the axis of the fibre or waveguide for monitoring a section thereof
-
- 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
- G02B6/028—Optical fibres with cladding with or without a coating with core or cladding having graded refractive index
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/10—Internal structure or shape details
- C03B2203/22—Radial profile of refractive index, composition or softening point
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/04—Multi-nested ports
- C03B2207/06—Concentric circular ports
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/20—Specific substances in specified ports, e.g. all gas flows specified
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/50—Multiple burner arrangements
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/70—Control measures
-
- 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
- C03B37/014—Manufacture of preforms for drawing fibres or filaments made entirely or partially by chemical means, e.g. vapour phase deposition of bulk porous glass either by outside vapour deposition [OVD], or by outside vapour phase oxidation [OVPO] or by vapour axial deposition [VAD]
- C03B37/01446—Thermal after-treatment of preforms, e.g. dehydrating, consolidating, sintering
-
- 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
- G02B6/03605—Highest refractive index not on central axis
- G02B6/03611—Highest index adjacent to central axis region, e.g. annular core, coaxial ring, centreline depression affecting waveguiding
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Analytical Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Description
[一般的開示]
[R]は、上記の屈折率差に対する上記の間隔(mm)の比
[r0.25]は、光ファイバ母材の中心からの距離(mm)により上記第1の位置を、
[n0.25]は、上記第1の位置における光ファイバ母材の屈折率を
[r0.75]は、光ファイバ母材の中心からの距離(mm)により上記第2の位置を、
[n0.75]は、上記第2の位置における光ファイバ母材の屈折率を
それぞれ表す。
図1および図2に示した機材を用いてガラス微粒子堆積体12を製造した。コア部堆積用バーナ13に、酸素9.3L/分、水素6.8L/分、アルゴン0.38L/分、四塩化ケイ素0.46L/分および四塩化ゲルマニウム17mL/分を流した。
[R]は、屈折率の差に対する間隔(mm)の比の絶対値
[r0.25]は、光ファイバ母材の中心からの距離(mm)により上記第1の位置を、
[n0.25]は、上記第2の位置における光ファイバ母材の屈折率を
[r0.75]は、前記光ファイバ母材の中心からの距離(mm)により上記第2の位置を、
[n0.75]は、上記第2の位置における光ファイバ母材の屈折率を
それぞれ表す。
実施例1と同じ機材を用いてガラス微粒子堆積体を製造した。コア部堆積用バーナ13には、酸素8.9L/分、水素6.7L/分、アルゴン0.40L/分、四塩化ケイ素0.41L/分および四塩化ゲルマニウム20mL/分を流した。
実施例1と同じ機材を用いて、比較例1に係る光ファイバ母材を作成した。コア部堆積用バーナ13には、酸素9.3L/分、水素6.5L/分、アルゴン0.38L/分、四塩化ケイ素0.44L/分および四塩化ゲルマニウム16mL/分を流した。
Claims (3)
- 屈折率が相対的に高いコア部と屈折率が相対的に低いクラッド部とを有する光ファイバ母材の前記コア部の径を測定する方法であって、
前記光ファイバ母材の半径方向について屈折率が変化する前記コア部から前記クラッド部に至る区間において、前記クラッド部の屈折率を屈折率比の基準0.0とし、前記コア部の屈折率の最大値を屈折率比1.0として、
前記光ファイバ母材の径方向について、前記屈折率比が0.25となる第1の位置の前記光ファイバ母材の屈折率と、前記屈折率比が0.75となる第2の位置の前記光ファイバ母材の屈折率との間の差と、前記第1の位置および前記第2の位置の間隔(mm)との比の絶対値を下記の式1に従って算出した場合に0.0015(/mm)以上である光ファイバ母材を用意する段階と、
平行光を前記光ファイバ母材に照射し、前記光ファイバ母材を透過した光を受光して撮影した画像から前記コア部の径を測定する段階と
を備える方法。
- 前記光ファイバ母材は、前記第1の位置よりも外周側に、前記光ファイバ母材の径方向について屈折率の変化を示す曲線が変曲点を生じる屈折率分布を有する請求項1に記載の方法。
- 前記光ファイバ母材が略円筒形状になる部分のコア部相当径が直径で22mm以上である請求項1または2に記載の方法。
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2018183352 | 2018-09-28 | ||
JP2018183352 | 2018-09-28 | ||
PCT/IB2019/058290 WO2020065632A1 (ja) | 2018-09-28 | 2019-09-30 | 光ファイバ母材 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPWO2020065632A1 JPWO2020065632A1 (ja) | 2021-09-16 |
JP7068484B2 true JP7068484B2 (ja) | 2022-05-16 |
Family
ID=69951882
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2020547477A Active JP7068484B2 (ja) | 2018-09-28 | 2019-09-30 | 光ファイバ母材の測定方法 |
Country Status (5)
Country | Link |
---|---|
US (1) | US11274917B2 (ja) |
JP (1) | JP7068484B2 (ja) |
KR (1) | KR102434616B1 (ja) |
CN (1) | CN112805254A (ja) |
WO (1) | WO2020065632A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7399835B2 (ja) * | 2020-10-07 | 2023-12-18 | 信越化学工業株式会社 | 光ファイバ用多孔質ガラス堆積体の製造方法 |
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US4362943A (en) | 1980-09-08 | 1982-12-07 | Bell Telephone Laboratories, Incorporated | Method of measuring the refractive index profile and the core diameter of optical fibers and preforms |
JP2003206152A (ja) | 2001-11-09 | 2003-07-22 | Fujikura Ltd | 光ファイバ、光ファイバ母材およびそれらの製造方法 |
JP2003238203A (ja) | 2002-02-15 | 2003-08-27 | Furukawa Electric Co Ltd:The | 石英光ファイバおよび石英光ファイバ母材の製造方法 |
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-
2019
- 2019-09-30 KR KR1020217008467A patent/KR102434616B1/ko active IP Right Grant
- 2019-09-30 JP JP2020547477A patent/JP7068484B2/ja active Active
- 2019-09-30 WO PCT/IB2019/058290 patent/WO2020065632A1/ja active Application Filing
- 2019-09-30 CN CN201980061866.4A patent/CN112805254A/zh active Pending
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2021
- 2021-03-25 US US17/213,213 patent/US11274917B2/en active Active
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US4362943A (en) | 1980-09-08 | 1982-12-07 | Bell Telephone Laboratories, Incorporated | Method of measuring the refractive index profile and the core diameter of optical fibers and preforms |
JP2003206152A (ja) | 2001-11-09 | 2003-07-22 | Fujikura Ltd | 光ファイバ、光ファイバ母材およびそれらの製造方法 |
JP2003238203A (ja) | 2002-02-15 | 2003-08-27 | Furukawa Electric Co Ltd:The | 石英光ファイバおよび石英光ファイバ母材の製造方法 |
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JP2005308717A (ja) | 2004-03-23 | 2005-11-04 | Shin Etsu Chem Co Ltd | 光ファイバ母材のコア部非円率の測定方法及びその装置 |
JP2006337089A (ja) | 2005-05-31 | 2006-12-14 | Shin Etsu Chem Co Ltd | 光ファイバ用母材の構造測定方法と測定装置 |
US20070137256A1 (en) | 2005-12-19 | 2007-06-21 | Barish Eric L | Methods for optical fiber manufacture |
JP2013234078A (ja) | 2012-05-02 | 2013-11-21 | Shin-Etsu Chemical Co Ltd | 光ファイバ用多孔質ガラス堆積体の製造方法 |
JP2014142613A (ja) | 2012-12-28 | 2014-08-07 | Shin Etsu Chem Co Ltd | 光ファイバおよび光ファイバ用シリカガラス母材 |
CN104876434A (zh) | 2015-03-10 | 2015-09-02 | 武汉理工大学 | 一种均匀掺杂石英玻璃棒的制备方法 |
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CN112805254A (zh) | 2021-05-14 |
US20210215473A1 (en) | 2021-07-15 |
KR20210048518A (ko) | 2021-05-03 |
WO2020065632A1 (ja) | 2020-04-02 |
KR102434616B1 (ko) | 2022-08-19 |
US11274917B2 (en) | 2022-03-15 |
JPWO2020065632A1 (ja) | 2021-09-16 |
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