WO2005085146A1 - 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
- WO2005085146A1 WO2005085146A1 PCT/JP2005/000258 JP2005000258W WO2005085146A1 WO 2005085146 A1 WO2005085146 A1 WO 2005085146A1 JP 2005000258 W JP2005000258 W JP 2005000258W WO 2005085146 A1 WO2005085146 A1 WO 2005085146A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- base material
- deposition
- preform
- porous
- glass
- Prior art date
Links
Classifications
-
- 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
- C03C3/00—Glass compositions
- C03C3/04—Glass compositions containing silica
- C03C3/06—Glass compositions containing silica with more than 90% silica by weight, e.g. quartz
-
- 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]
- C03B37/01406—Deposition reactors therefor
-
- 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
-
- 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
- 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
- C03C2201/00—Glass compositions
- C03C2201/80—Glass compositions containing bubbles or microbubbles, e.g. opaque quartz glass
-
- 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
- C03C2203/00—Production processes
- C03C2203/40—Gas-phase processes
- C03C2203/42—Gas-phase processes using silicon halides as starting materials
- C03C2203/44—Gas-phase processes using silicon halides as starting materials chlorine containing
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
- Y02P40/57—Improving the yield, e-g- reduction of reject rates
Definitions
- the present invention relates to a porous preform for an optical fiber, which can improve the productivity by labor saving or the like and the quality by reducing the generation of bubbles in the glass preform in the OVD method.
- the present invention relates to a manufacturing method and a glass base material.
- Patent application 2004 59207 Filing date March 3, 2004
- a glass material is flame-hydrolyzed in an oxyhydrogen flame in a reaction apparatus by an external method (OVD method), and the produced glass fine particles are rotated.
- OLED method external method
- Most of the product is deposited on a target rod (starting substrate) to produce a porous base material, which is then dehydrated and sintered by another vitrification apparatus to form a transparent vitrification.
- the porous preform having been deposited in a predetermined amount is taken out of the reactor, and the subsequent batch of the porous preform is continuously deposited. Between the batches, as shown in FIG. Work process exists.
- the mechanism of soot deposition is thought to be chemical reaction in the flame of the Pana flame, particle growth by soot, and thermophoresis on the deposition surface.
- soot unadhered soot
- soot unadhered soot
- the removal of soot that has not adhered to the inside of the chamber in Fig. 1 means that when soot that has adhered to the wall surface and deposited as a layer has fallen off and adhered to the base material being deposited, bubbles are generated in the transparent vitrification process.
- This is a step of removing soot adhering to one wall surface of the chamber by using a vacuum cleaner or the like before starting deposition of the next batch.
- Patent Document 1 states that the deposition efficiency can be improved by setting the chamber internal pressure P during deposition to 0 P> P> -30P.
- Patent Document 2 discloses that a
- the chamber internal pressure P is set to 0 P> P> -15P, and then
- the generation of air bubbles can be prevented.
- Patent Document 1 JP 2001-278634 A
- Patent Document 2 JP-A-2003-73138
- the present invention provides a work process between batches that does not adversely affect the quality of the glass base material.
- the objective is to provide a method for manufacturing a porous preform for optical fibers and to provide a glass preform that can omit the process and reduce the cost of the product.
- the method for producing a porous preform for an optical fiber according to the present invention is characterized in that the starting base material is provided in an apparatus having a parner for generating glass fine particles toward the starting base material and an exhaust mechanism at a position facing the parner.
- the deposition of the porous base material is completed in a method of manufacturing a porous base material by reciprocating the wrench along the material and depositing glass fine particles generated by the flame hydrolysis reaction of the glass raw material on the starting base material.
- the deposition of the next base material without removing the soot adhering to the inside of the chamber is started, and at this time, the minimum internal pressure in the chamber is set to P. It is preferable to adjust the pressure in the chamber so that the pressure is in the range of -80P ⁇ P ⁇ -40P.
- the differential pressure P in the device is in the range of 80P ⁇ P ⁇ -40P.
- the removal of soot adhering to the inside of the chamber which has been regarded as an indispensable operation in the past, between the batches after the deposition and the removal of the porous base material from the apparatus, is performed. Even if it is not performed, the soot removal step between batches can be omitted without deteriorating the quality, and excellent effects such as obtaining a glass base material for optical fibers with very few bubbles and excellent optical characteristics at low cost can be obtained. .
- FIG. 1 is a schematic explanatory view showing an example of a work process performed between notches in an OVD method.
- FIG. 2 is a schematic explanatory view showing one example of a porous base material manufacturing apparatus by an OVD method.
- FIG. 3 is a graph showing the relationship between the number of depositions and the number of bubbles generated in a glass base material in Example 1.
- FIG. 4 is a graph showing the relationship between the number of depositions and the number of bubbles generated in the glass base material in Comparative Examples 1 and 2.
- FIG. 5 is a graph showing the relationship between the number of depositions and the number of bubbles generated in a glass base material in Comparative Examples 13 and 13.
- a deposition parner 1 and an exhaust port 2 are installed at a position opposite to it, and a target rod (starting substrate) 3 is gripped by a gripper 6 equipped with a rotation motor 5.
- the deposition parner 1 is relatively reciprocally movable along the target rod 3, and is further provided such that the exhaust port 2 moves in accordance with the movement of the deposition parner 1.
- Product cost can be reduced without adversely affecting product quality.
- the differential pressure P in the device is -80P or more, the leak amount increases as the negative pressure increases.
- the pressure difference P in the apparatus is kept within the above range.
- a target rod made of quartz glass with a diameter of 50 mm was set in the manufacturing apparatus as shown in Fig. 2, and soot was deposited on the target rod using a concentric multi-tube parner by the OVD method to produce a porous base material. .
- the used concentric multi-pipe stacking parner was composed of a quintuple pipe, and four parners were arranged at 150mm intervals.
- the gas supply conditions are such that the source gas (SiCl) 1
- the amounts of raw material gas, oxygen and hydrogen are set so that Each was adjusted. Under these conditions, the deposition was performed for 50 hours to obtain 100 kg of a porous base material. [0029] Note that this deposition was performed using three manufacturing apparatuses, and the differential pressure P in each apparatus was set to 40P.
- a quartz glass target rod with a diameter of 50 mm was set in the apparatus, and glass microparticles were deposited on the target rod using a concentric multi-layered pipe opener by the OVD method to produce a porous base material.
- the concentric multi-pipe stacker used was a quintuple pipe, four of which were arranged at 150 mm intervals, and soot deposition was performed under the same feed gas and combustion gas conditions as in Example 1.
- the deposition time was 50 hr and 100 kg of a porous base material was obtained.
- the pressure difference P in the apparatus during the deposition was -30P.
- the pressure difference P in the equipment was set to 30P, and after the deposition was completed, the porous base material was removed from the equipment.
- the pressure difference P in the equipment during deposition was set to 90P, and after the deposition was completed, the porous base material was removed from the equipment.
- the method for producing a porous preform for optical fiber of the present invention it is possible to reduce the cost of the product without deteriorating the quality, which contributes to the cost reduction of the optical fiber.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geochemistry & Mineralogy (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/513,103 US20070051135A1 (en) | 2004-03-03 | 2006-08-31 | Method for manufacturing porous-glass material for optical fiber, and glass base material |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-059207 | 2004-03-03 | ||
JP2004059207A JP4423068B2 (ja) | 2004-03-03 | 2004-03-03 | 光ファイバ用多孔質母材の製造方法及びガラス母材 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/513,103 Continuation-In-Part US20070051135A1 (en) | 2004-03-03 | 2006-08-31 | Method for manufacturing porous-glass material for optical fiber, and glass base material |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2005085146A1 true WO2005085146A1 (ja) | 2005-09-15 |
Family
ID=34917964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/000258 WO2005085146A1 (ja) | 2004-03-03 | 2005-01-12 | 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 (6)
Country | Link |
---|---|
US (1) | US20070051135A1 (ja) |
JP (1) | JP4423068B2 (ja) |
KR (1) | KR101120786B1 (ja) |
CN (1) | CN1946642A (ja) |
TW (1) | TW200531943A (ja) |
WO (1) | WO2005085146A1 (ja) |
Families Citing this family (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4748758B2 (ja) * | 2004-03-18 | 2011-08-17 | 信越化学工業株式会社 | 多孔質ガラス母材の製造装置 |
JP4453021B2 (ja) * | 2005-04-01 | 2010-04-21 | セイコーエプソン株式会社 | 半導体装置の製造方法及び半導体製造装置 |
JP4362834B2 (ja) * | 2006-10-11 | 2009-11-11 | セイコーエプソン株式会社 | 半導体装置の製造方法、電子機器の製造方法および半導体製造装置 |
JP4407685B2 (ja) | 2006-10-11 | 2010-02-03 | セイコーエプソン株式会社 | 半導体装置の製造方法および電子機器の製造方法 |
JP5157385B2 (ja) * | 2007-11-19 | 2013-03-06 | 住友電気工業株式会社 | ガラス微粒子堆積体の製造方法 |
JP5692211B2 (ja) * | 2012-12-12 | 2015-04-01 | 住友電気工業株式会社 | ガラス微粒子堆積体の製造方法 |
JP6960728B2 (ja) * | 2016-08-22 | 2021-11-05 | 信越化学工業株式会社 | ガラス微粒子堆積体の製造装置 |
JP2018203576A (ja) * | 2017-06-06 | 2018-12-27 | 住友電気工業株式会社 | ガラス微粒子堆積体の製造方法及びガラス母材の製造方法 |
CN111386248B (zh) | 2017-11-17 | 2022-11-15 | 普睿司曼股份公司 | 用于制造光纤用玻璃预制件的设备和方法 |
JP6694915B2 (ja) | 2018-06-12 | 2020-05-20 | 株式会社フジクラ | 多孔質ガラス微粒子体の製造方法および光ファイバ母材の製造方法 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0692649A (ja) * | 1992-09-11 | 1994-04-05 | Fujikura Ltd | ガラス母材の製造装置 |
JPH07330367A (ja) * | 1994-06-09 | 1995-12-19 | Sumitomo Electric Ind Ltd | 光ファイバ用母材の製造方法及び装置 |
JPH09124334A (ja) * | 1995-10-27 | 1997-05-13 | Fujikura Ltd | 光ファイバ母材の製造方法 |
JP2001019463A (ja) * | 1999-07-12 | 2001-01-23 | Sumitomo Electric Ind Ltd | 光ファイバ用多孔質母材の製造方法および製造装置 |
JP2001278634A (ja) * | 2000-03-29 | 2001-10-10 | Hitachi Cable Ltd | 光ファイバ母材の製造方法 |
JP2003073138A (ja) * | 2001-09-03 | 2003-03-12 | Hitachi Cable Ltd | 光ファイバ母材の製造方法及び装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2000313625A (ja) * | 1999-04-26 | 2000-11-14 | Shin Etsu Chem Co Ltd | 多孔質ガラス母材の製造装置 |
KR100817195B1 (ko) * | 2000-10-18 | 2008-03-27 | 신에쓰 가가꾸 고교 가부시끼가이샤 | 다공질 광섬유모재의 제조장치 |
US20040060326A1 (en) * | 2001-06-14 | 2004-04-01 | Tomohiro Ishihara | Device and method for producing stack of fine glass particles |
JP2003034540A (ja) * | 2001-07-18 | 2003-02-07 | Sumitomo Electric Ind Ltd | ガラス微粒子堆積体製造装置 |
-
2004
- 2004-03-03 JP JP2004059207A patent/JP4423068B2/ja not_active Expired - Lifetime
-
2005
- 2005-01-12 WO PCT/JP2005/000258 patent/WO2005085146A1/ja active Application Filing
- 2005-01-12 CN CNA2005800128822A patent/CN1946642A/zh active Pending
- 2005-01-14 KR KR1020050003787A patent/KR101120786B1/ko active IP Right Grant
- 2005-03-02 TW TW094106304A patent/TW200531943A/zh unknown
-
2006
- 2006-08-31 US US11/513,103 patent/US20070051135A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0692649A (ja) * | 1992-09-11 | 1994-04-05 | Fujikura Ltd | ガラス母材の製造装置 |
JPH07330367A (ja) * | 1994-06-09 | 1995-12-19 | Sumitomo Electric Ind Ltd | 光ファイバ用母材の製造方法及び装置 |
JPH09124334A (ja) * | 1995-10-27 | 1997-05-13 | Fujikura Ltd | 光ファイバ母材の製造方法 |
JP2001019463A (ja) * | 1999-07-12 | 2001-01-23 | Sumitomo Electric Ind Ltd | 光ファイバ用多孔質母材の製造方法および製造装置 |
JP2001278634A (ja) * | 2000-03-29 | 2001-10-10 | Hitachi Cable Ltd | 光ファイバ母材の製造方法 |
JP2003073138A (ja) * | 2001-09-03 | 2003-03-12 | Hitachi Cable Ltd | 光ファイバ母材の製造方法及び装置 |
Also Published As
Publication number | Publication date |
---|---|
US20070051135A1 (en) | 2007-03-08 |
KR20050089131A (ko) | 2005-09-07 |
TW200531943A (en) | 2005-10-01 |
JP2005247624A (ja) | 2005-09-15 |
KR101120786B1 (ko) | 2012-03-23 |
JP4423068B2 (ja) | 2010-03-03 |
CN1946642A (zh) | 2007-04-11 |
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