WO2005066085A1 - 光ファイバ用多孔質母材の製造方法及びガラス母材 - Google Patents
光ファイバ用多孔質母材の製造方法及びガラス母材 Download PDFInfo
- Publication number
- WO2005066085A1 WO2005066085A1 PCT/JP2004/019644 JP2004019644W WO2005066085A1 WO 2005066085 A1 WO2005066085 A1 WO 2005066085A1 JP 2004019644 W JP2004019644 W JP 2004019644W WO 2005066085 A1 WO2005066085 A1 WO 2005066085A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- glass
- deposition
- preform
- flame
- optical fiber
- Prior art date
Links
Classifications
-
- 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]
-
- 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
-
- 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]
- C03B37/01486—Means for supporting, rotating or translating the preforms being formed, e.g. lathes
-
- 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
- C03B2207/00—Glass deposition burners
- C03B2207/60—Relationship between burner and deposit, e.g. position
- C03B2207/66—Relative motion
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/70—Control measures
Definitions
- the present invention relates to a method for producing a porous base material by depositing glass fine particles produced by a flame hydrolysis method in an OVD method on a starting member, and in particular, to a method for improving the deposition efficiency of glass fine particles. a manufacturing method and a glass base material fiber porous preform.
- quartz glass preforms for optical fibers are produced by flame hydrolysis of glass materials in an oxyhydrogen flame by an external method (OVD method). Most of the product is deposited on a rotating rod-shaped target with glass microparticles to produce a porous matrix, which is then dehydrated and sintered to form a transparent glass.
- the glass fine particles generated by the flame hydrolysis of the glass raw material are sprayed onto the porous base material together with the flame flow, and adhere to the porous base material, but the exhaust gas does not accumulate an amount of force (about 50%). It is discharged to the outside of the system to. Therefore, there is a need for a method of attaching the supplied glass raw material to the porous base material with higher efficiency than the generated glass fine particles.
- Patent Document 1 discloses that, when using a concentric multi-tube deposition parner to attach fine particles produced by flame hydrolysis of a glass raw material to a target, the particles are grown based on the target diameter that grows during deposition. It is described that the deposition efficiency can be improved by controlling the Reynolds number Re of the material flow path of the deposition parner.
- thermophoresis and ⁇ ⁇ phenomena are considered as the basic mechanism by which glass particles generated by the deposition parner adhere to the target surface. According to the above phenomenon, when fine particles are present in a gas and a temperature gradient is present in the surrounding gas, the fine particles move in a direction from a high temperature to a low temperature.
- the deposition parner is relatively moved, and the fine particles generated by the flame hydrolysis directly collide with the target together with the flame, excluding the region where the fine particles are generated.
- the temperature gradient near the base metal surface whose temperature is rising due to the nearby deposition flame, increases. becomes, that glass particles are more thermally migrate to the low temperature side, deposition rate is above improvement.
- Patent Document 2 discloses a method of arranging a cooling gas outlet directly above a deposition parner toward a deposition surface and spraying N or Ar gas to cool a porous base material.
- Patent Document 4 discloses that a cooling nozzle is arranged directly above a deposition burner toward a deposition surface, and is generated by corona discharge.
- a method of performing deposition while cooling the surface of the porous preform further, Patent Document 5, a surface flame the rotating target is not hit directly by the flow of water cooled nozzle force is also injected how to forced cooling describe, Ru.
- Patent Document 1 JP 2001 -294429 JP
- Patent Document 2 JP-61 -86440 Patent Publication
- Patent Document 3 JP 01 -203238 discloses
- Patent Document 4 JP 64-65040 JP
- Patent Document 5 JP-A 04-55336 Patent Publication
- the present invention provides a method for performing deposition while cooling the surface of a porous preform, which can improve the adhesion rate of glass fine particles without generating cracks on the surface of the porous preform. and its object is to provide a manufacturing method and a glass preform for an optical fiber porous preform.
- the production method of the present onset bright optical fiber porous preform is flame pressurized water glass raw material in an oxyhydrogen flame to decompose, by rotating the generated glass fine particles, Ru deposited on the target to form a porous preform, this dehydration, and have contact to the method for manufacturing an optical fiber preform for vitrification by sintering, with respect to the surface temperature of the porous preform which varies with relative movement between the PANA and the target glass particle deposition, the surface temperature of the porous base material at the time of contact with the Banaka resulting flame for the deposition (Ta), flame contact temperature difference between the surface temperature (Tb) in front of the porous preform - the (Ta Tb), is characterized in 200 ° C ⁇ (Ta- Tb) be adjusted to ⁇ 700 ° C. It should be noted that the temperature difference ( Adjustment of Ta-Tb) can be performed by adjusting the direction,
- porous preform for optical fiber is dehydrated, sintered and transparently vitrified, so that the glass preform for optical fiber can be manufactured at low cost.
- the surface temperature difference (Ta-Tb) of the porous preform before and after the flame is brought into contact with the deposition parner at 200 ° C during deposition.
- ⁇ by adjusting the (Ta-Tb) ⁇ 700 ° C it is possible to improve the deposition rate of Kotonaguga Las microparticles of generating cracks on the surface of the porous preform.
- porous preform for optical fiber is dehydrated, sintered and transparently vitrified, so that the glass preform for optical fiber can be manufactured at low cost.
- the deposition site of the glass particles is displaced as the deposition parner moves, but the temperature of the deposition site changes before and after the flame of the deposition panner comes into contact.
- the supply amounts of hydrogen and oxygen to the deposition burner were adjusted so that the surface temperature difference of the porous base material before and after the flame contact (Ta-Tb) 200 ° C ⁇ (Ta-Tb) ⁇ 700 By doing so, it is possible to improve the adhesion rate of the glass fine particles without generating cracks on the surface of the porous base material.
- the OVD method of diameter 50 mm phi quartz glass target rod set in manufacturing apparatus of the porous preform by disposing the four concentric multi-tube deposition PANA at 0.99 mm intervals, the glass particles deposition was carried out.
- the used concentric multi-pipe stacking parner had a five-fold pipe force, and in the initial stage of deposition, the central pipe was equipped with a raw material gas (SiCl) of 1 Nl / min / oxygen and 8 Nl / min / oxygen. , the first
- the piper has 200 Nl / min / Pana for hydrogen in the third pipe, 4 Nl / min / Pana for nitrogen in the fourth pipe, and 60 Nl / min / Pana for oxygen in the fifth pipe. It was adjusted raw material gas, oxygen and the amount of hydrogen, respectively.
- Deposition was performed for 50 hr under the above conditions. As a result, there was no surface cracking, but the deposition rate was 2000 g / hr and the deposition efficiency was 0.50.
- the apparatus used includes means for forcibly cooling the surface of the porous base material, i.e. the air inlet.
- a quartz glass rod-shaped target with a diameter of 50 mm was set in the apparatus, and a porous preform was deposited by the OVD method using a concentric multi-tube deposition parner.
- the pentner used for the deposition was a quintuple pipe deposition parner, and the gas supplied to each tube was the central tube; SiCl +0, the second tube; Air,
- the third tube; H, fourth pipe; N, fifth pipe; is 0.
- Conditions of the feed gas is the same as Comparative Example 1 described above, the deposition PANA while relatively moving at a speed of 100 mm / min to the target, the outer diameter of the porous preform is 300 mm phi
- the deposition was performed by changing the surface temperature difference (Ta-Tb) during the deposition.
- Table 1 shows the deposition results and the surface temperature difference (Ta-Tb) values at that time.
- the surface temperature may be measured using force or other methods based on thermograph values.
- the adhesion rate of glass microparticles can be improved and it contributes to the cost reduction of an optical fiber.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/583,971 US8297079B2 (en) | 2004-01-07 | 2004-12-28 | Method of manufacturing porous glass base material used for optical fibers, and glass base material |
CN2004800362967A CN1890190B (zh) | 2004-01-07 | 2004-12-28 | 光纤用多孔质母材的制造方法以及玻璃母材 |
EP04807999A EP1705158A1 (en) | 2004-01-07 | 2004-12-28 | Process for producing porous preform for optical fiber and glass preform |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004002128A JP2005194135A (ja) | 2004-01-07 | 2004-01-07 | 光ファイバ用多孔質母材の製造方法及びガラス母材 |
JP2004-002128 | 2004-01-07 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005066085A1 true WO2005066085A1 (ja) | 2005-07-21 |
Family
ID=34747017
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/019644 WO2005066085A1 (ja) | 2004-01-07 | 2004-12-28 | 光ファイバ用多孔質母材の製造方法及びガラス母材 |
Country Status (7)
Country | Link |
---|---|
US (1) | US8297079B2 (ja) |
EP (1) | EP1705158A1 (ja) |
JP (1) | JP2005194135A (ja) |
KR (1) | KR20060115395A (ja) |
CN (1) | CN1890190B (ja) |
TW (1) | TW200526532A (ja) |
WO (1) | WO2005066085A1 (ja) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5380018B2 (ja) * | 2008-09-03 | 2014-01-08 | 株式会社フジクラ | 光ファイバ母材の製造方法 |
CN113772946B (zh) * | 2021-10-22 | 2023-01-17 | 江苏亨通光导新材料有限公司 | 一种防止光纤预制棒锥头开裂的结构、方法和存储介质 |
WO2023112967A1 (ja) * | 2021-12-14 | 2023-06-22 | 住友電気工業株式会社 | ガラス母材の製造方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07144928A (ja) * | 1993-11-24 | 1995-06-06 | Yazaki Corp | 光ファイバ母材の製造方法及び光ファイバ母材の製造装置 |
JPH10101343A (ja) * | 1996-05-09 | 1998-04-21 | Sumitomo Electric Ind Ltd | ガラス微粒子合成方法及びそのための焦点型バーナ |
JPH11349345A (ja) * | 1998-06-05 | 1999-12-21 | Sumitomo Electric Ind Ltd | 多孔質母材の製造方法 |
Family Cites Families (22)
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US3565345A (en) * | 1968-07-11 | 1971-02-23 | Texas Instruments Inc | Production of an article of high purity metal oxide |
US4367085A (en) * | 1980-01-07 | 1983-01-04 | Nippon Telegraph & Telephone Public Corporation | Method of fabricating multi-mode optical fiber preforms |
US4317667A (en) * | 1981-01-05 | 1982-03-02 | Western Electric Co., Inc. | Method and apparatus for fabricating lightguide preforms |
US4428762A (en) * | 1982-04-26 | 1984-01-31 | Western Electric Company, Inc. | Vapor-phase axial deposition system |
US4474593A (en) * | 1982-04-26 | 1984-10-02 | At&T Technologies Inc. | Method of fabricating a lightguide fiber |
US4465708A (en) * | 1983-05-31 | 1984-08-14 | At&T Technologies, Inc. | Technique for fabricating single mode lightguide soot-forms |
CA1284921C (en) * | 1984-02-27 | 1991-06-18 | Hiroyuki Suda | Method, apparatus and burner for fabricating an optical fiber preform |
JPS6186440A (ja) | 1984-10-05 | 1986-05-01 | Sumitomo Electric Ind Ltd | 光フアイバ用プリフオ−ムの製造方法 |
US4661140A (en) * | 1985-02-06 | 1987-04-28 | Sumitomo Electric Industries, Ltd. | Gas reaction apparatus and multi-wall pipe type burner therefor |
US4684383A (en) * | 1986-01-30 | 1987-08-04 | Corning Glass Works | Methods for reducing the water content of optical waveguide fibers |
US5028246A (en) * | 1986-02-03 | 1991-07-02 | Ensign-Bickford Optical Technologies, Inc. | Methods of making optical waveguides |
JPS6465040A (en) | 1987-09-04 | 1989-03-10 | Sumitomo Electric Industries | Production of porous optical fiber preform |
JPH01203238A (ja) | 1988-02-08 | 1989-08-16 | Sumitomo Electric Ind Ltd | 光フアイバ用母材の製造方法 |
JPH02196045A (ja) * | 1989-01-23 | 1990-08-02 | Sumitomo Electric Ind Ltd | 高純度石英母材製造用加熱炉 |
JPH0455336A (ja) | 1990-06-20 | 1992-02-24 | Fujikura Ltd | ガラス微粒子堆積体の製造方法 |
GB9312634D0 (en) * | 1993-06-18 | 1993-08-04 | Tsl Group Plc | Improvements in vitreous silica manufacture |
JP3131162B2 (ja) * | 1996-11-27 | 2001-01-31 | 信越化学工業株式会社 | 光ファイバプリフォームの製造方法 |
DE19827945C1 (de) * | 1998-06-25 | 1999-06-24 | Heraeus Quarzglas | Verfahren und Vorrichtung für die Herstellung einer porösen SiO¶2¶-Vorform |
JP4471445B2 (ja) | 2000-04-06 | 2010-06-02 | 信越化学工業株式会社 | 多孔質ガラス母材の製造方法及びその装置 |
EP1279646B1 (en) * | 2001-07-26 | 2006-12-13 | Sumitomo Electric Industries, Ltd. | Method and apparatus for producing a glass preform for optical fibres |
JP2003171137A (ja) | 2001-11-30 | 2003-06-17 | Fujikura Ltd | 光ファイバ母材の製造方法 |
EP1394124A4 (en) * | 2002-01-17 | 2007-03-07 | Sumitomo Electric Industries | METHOD AND DEVICE FOR MANUFACTURING A GLASS TUBE |
-
2004
- 2004-01-07 JP JP2004002128A patent/JP2005194135A/ja active Pending
- 2004-12-28 CN CN2004800362967A patent/CN1890190B/zh active Active
- 2004-12-28 US US10/583,971 patent/US8297079B2/en active Active
- 2004-12-28 WO PCT/JP2004/019644 patent/WO2005066085A1/ja not_active Application Discontinuation
- 2004-12-28 KR KR1020067010296A patent/KR20060115395A/ko active Search and Examination
- 2004-12-28 EP EP04807999A patent/EP1705158A1/en not_active Withdrawn
-
2005
- 2005-01-05 TW TW094100232A patent/TW200526532A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH07144928A (ja) * | 1993-11-24 | 1995-06-06 | Yazaki Corp | 光ファイバ母材の製造方法及び光ファイバ母材の製造装置 |
JPH10101343A (ja) * | 1996-05-09 | 1998-04-21 | Sumitomo Electric Ind Ltd | ガラス微粒子合成方法及びそのための焦点型バーナ |
JPH11349345A (ja) * | 1998-06-05 | 1999-12-21 | Sumitomo Electric Ind Ltd | 多孔質母材の製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US8297079B2 (en) | 2012-10-30 |
EP1705158A1 (en) | 2006-09-27 |
CN1890190A (zh) | 2007-01-03 |
KR20060115395A (ko) | 2006-11-08 |
TW200526532A (en) | 2005-08-16 |
CN1890190B (zh) | 2011-07-27 |
JP2005194135A (ja) | 2005-07-21 |
US20070163300A1 (en) | 2007-07-19 |
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