WO2006038342A1 - 光ファイバ母材の製造方法および装置 - Google Patents
光ファイバ母材の製造方法および装置 Download PDFInfo
- Publication number
- WO2006038342A1 WO2006038342A1 PCT/JP2005/009324 JP2005009324W WO2006038342A1 WO 2006038342 A1 WO2006038342 A1 WO 2006038342A1 JP 2005009324 W JP2005009324 W JP 2005009324W WO 2006038342 A1 WO2006038342 A1 WO 2006038342A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optical fiber
- fiber preform
- pana
- temperature control
- temperature
- 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]
- 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
- C03B19/00—Other methods of shaping glass
- C03B19/14—Other methods of shaping glass by gas- or vapour- phase reaction processes
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2207/00—Glass deposition burners
- C03B2207/42—Assembly details; Material or dimensions of burner; Manifolds or supports
-
- 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
- C03B2207/60—Relationship between burner and deposit, e.g. position
Definitions
- the present invention relates to a method and an apparatus for manufacturing an optical fiber preform. More specifically, the present invention relates to a manufacturing method applicable to the manufacture of an optical fiber preform using a flame hydrolysis reaction and a manufacturing apparatus for performing the manufacturing method.
- an optical fiber preform manufacturing apparatus for example, there is a manufacturing apparatus using the VAD method. As shown in FIG. 1, a quartz substrate 2 is suspended in a quartz chamber 1, and soot is deposited on the quartz substrate 1. By doing so, the soot deposit 3 is obtained.
- the soot-synthesizing panner has a core panner 4 facing the lower end of the quartz substrate 2 and a cladding panner 5 facing the side of the quartz substrate 2, respectively. It is supported by the fixed part of the pan including the jig 7.
- the core spanner 4 includes silicon tetrachloride (SiCl) as a core raw material, and dopan for controlling the refractive index.
- H gas for oxyhydrogen flame in the raw material line such as tetra-salt germanium (GeCl)
- the cladding panner 5 includes silicon tetrachloride
- both the core spanner 4 and the clad spanner 5 are supported by the fixing jig 7, and thereby the panner position is adjusted so that the relative position between the spanner and the soot deposit tip is optimized. be able to.
- the optical fiber preform rotates the quartz substrate 2 toward the target portion while blowing the source gas from the core burner 4 and the cladding burner 5 to generate the soot produced by the flame hydrolysis reaction.
- the soot deposit 3 including a core having a high refractive index and a clad having a low refractive index is obtained by depositing the quartz substrate 2 in the axial direction and raising the quartz substrate 2 in accordance with its growth. This is produced by dehydrating and converting to transparent glass in an electric furnace.
- the relative positional relationship between the PANA and the soot deposit can be obtained only by affecting the soot deposition speed and density. It is extremely important in determining the refractive index profile of the glass base material. In particular, in the VAD method, if the relative positional relationship between the PANA and the soot deposit tip is shifted, the refractive index profile of the obtained glass base material changes slightly. Have been proposed.
- Patent Document 1 uses a quartz glass panner, adopts a mold method as a means of solving the positional misalignment of the panner due to insufficient gripping force for fixing, and the panner is made of greaves gypsum. It is proposed to be fixed to the base.
- Patent Document 2 proposes a method of improving the accuracy and reproducibility of the fixing of the burner by defining the accuracy of the holding hole and adopting the fitting method of the fixing tool. 1: No. 03-22256
- Patent Document 2 Japanese Patent Laid-Open No. 2000-256032
- the present invention provides a manufacturing method and a manufacturing apparatus in which an optical fiber preform with a stable refractive index profile can be obtained by keeping the relative position between the pruner and the soot deposit always constant. It is aimed.
- an object of the present invention is to provide a manufacturing method and a manufacturing apparatus in which the position of the panner after adjusting the relative position with respect to the soot deposit is stably maintained without changing over time during the deposition.
- a soot produced by a flame hydrolysis reaction is deposited using a panner that generates a spanner flame for synthesizing an optical fiber preform.
- An optical fiber preform comprising a temperature control for maintaining a fluctuation range of a surface temperature of a burner fixing portion for positioning a burner at 80 ° C. or less, according to a method for manufacturing an optical fiber preform. A manufacturing method is provided. Naturally, the smaller the fluctuation range is, the better. However, as will be described in detail later, when the fluctuation range is set to 80 ° C or less, the refractive index profile of the finally obtained optical fiber preform is sufficiently stable. To do.
- the temperature control is performed by a temperature control mechanism that controls the temperature of the Pana fixing portion.
- a temperature control mechanism that controls the temperature of the Pana fixing portion.
- the Pana fixing portion includes a Pana holder and its fixing jig, and the temperature control mechanism is at least one of Pana flame, Pana holder and fixing jig. Including a heat shield disposed between the two. Thereby, the radiant heat from a PANA flame can be shielded and the change of the surface temperature of a PANA fixing part can be suppressed.
- the temperature control mechanism includes at least one of a temperature adjusting means for heating the Pana fixing part and a temperature adjusting means for cooling.
- the “temperature adjustment” may include heating, cooling, and temperature holding. Examples of the heating include a method of heating directly or indirectly with an electric heater. Moreover, about cooling, the method of cooling using a refrigerant
- a method for producing an optical fiber preform by depositing soot produced by a flame hydrolysis reaction using a panner that generates a spanner flame for synthesizing an optical fiber preform.
- the apparatus for producing an optical fiber preform is provided with a temperature control mechanism for maintaining the fluctuation range of the surface temperature of the part of the fixed part for positioning the part at 80 ° C. or less.
- the fluctuation range is 80 ° C or less.
- the refractive index profile of the optical fiber preform finally obtained is sufficiently stable. And the amount of variation over the entire optical fiber preform The predetermined tolerance is not exceeded.
- the permanent fixing portion includes a permanent holder and a fixing jig thereof, and the temperature control mechanism is at least one of a permanent flame, a permanent holder, and a fixing jig. Including a heat shield disposed between the two. Thereby, the radiant heat from a PANA flame can be shielded and the change of the surface temperature of a PANA fixing part can be suppressed.
- the temperature control mechanism includes at least one of a temperature adjusting means for heating the Pana fixing part and a temperature adjusting means for cooling.
- the “temperature adjustment” may include heating, cooling, and temperature holding.
- heating for example, means for directly or indirectly heating with an electric heater can be mentioned.
- cooling the means to cool using a refrigerant
- FIG. 1 is a schematic diagram showing a configuration example of an apparatus for manufacturing an optical fiber preform by a VAD method.
- FIG. 2 is a schematic diagram showing a configuration example of a manufacturing apparatus used in Example 1.
- FIG. 3 is a graph showing fluctuations in the refractive index difference ⁇ of the optical fiber preform obtained in Example 1.
- FIG. 4 is a schematic diagram showing a configuration example of a manufacturing apparatus used in Example 2.
- FIG. 5 is a graph showing fluctuations in the refractive index difference ⁇ of the optical fiber preform obtained in Example 2.
- FIG. 6 is a graph showing fluctuations in the refractive index difference ⁇ of the optical fiber preform obtained by the conventional manufacturing method and manufacturing apparatus.
- the soot deposit 3 was manufactured using the apparatus shown in FIG. In FIG. 2, the same components as those in FIG. 1 are denoted by the same reference numerals, and redundant description is omitted.
- the apparatus shown in FIG. 2 includes a SUS-made heat shield plate 8 disposed between a burner fixing portion including a holder holder 6 and a fixing jig 7 and a burner flame.
- a SUS-made heat shield plate 8 disposed between a burner fixing portion including a holder holder 6 and a fixing jig 7 and a burner flame.
- the radiant heat power due to the PANA flame is blocked.
- the heat shield plate 8 two types of plate materials of 100 X 100 5111111 31; 3 plate and 150 150 5111111 31; 3 plate of different sizes were prepared to shield the radiant heat of the Pana flame. The effect of soot deposit 3 on the refractive index distribution was investigated.
- the core spanner 4 includes the oxyhydrogen flame H gas and O gas, as well as the tetrasalt of the core raw material.
- soot deposit 3 was dehydrated and made into transparent glass in an electric furnace to obtain an optical fiber preform having a straight body length of 600 mm and an outer diameter of 100 mm.
- Table 1 shows the maximum temperature and the minimum surface temperature of the surface of the fixed part including the holder holder 6 and its fixing jig 7 measured during the deposition.
- Table 1 shows the measured results of the core Z clad refractive index difference ⁇ when the obtained optical fiber preform is made into transparent glass.
- An optical fiber preform was manufactured using the same materials and conditions as in Example 1 except that the manufacturing apparatus shown in FIG. 4 was used.
- FIG. 4 the same components as those in FIGS. 1 and 2 are denoted by the same reference numerals, and redundant description is omitted.
- the holder fixing portion including the holder holder 6 and the fixing jig 7 is housed in a thermostatic box 9 as a temperature adjusting means, and the temperature is kept in the range of 60 ° C ⁇ 1 ° C. Was controlled.
- the refractive index profile file of the optical fiber preform finally obtained from transparent glass was measured, and the results are shown in the graph in Fig. 5. As shown in the figure, the variation of the refractive index profile is extremely small.
- An optical fiber base material was manufactured using the same materials and conditions as in Example 1 except that the apparatus shown in FIG. 1 was used.
- Table 2 shows the maximum temperature and the minimum surface temperature of the surface of the fixed part including the holder holder 6 and its fixing jig 7 measured during the deposition. Also, the obtained optical fiber preform is transparent.
- Fig. 6 is a graph showing the measurement results of the refractive index difference ⁇ ⁇ of the core Z clad when it is vitrified. As is clear from the measurement results shown in Table 2 and FIG. 6, the amount of change in the refractive index difference ⁇ ⁇ was as great as 0.012.
- the method and apparatus for producing a glass preform for an optical fiber according to the present invention maintains the position of the pan installed with high accuracy of the soot position during the deposition of soot (glass fine particles) or between batches. . For this reason, a high-quality optical fiber preform in which fluctuations in the refractive index profile in the axial direction are suppressed can be obtained, and can be advantageously applied particularly in the manufacture of a large-sized optical fiber preform.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Glass Melting And Manufacturing (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2005800332275A CN101031517B (zh) | 2004-09-30 | 2005-05-23 | 光纤母材的制造方法及装置 |
US11/730,061 US9028912B2 (en) | 2004-09-30 | 2007-03-29 | Method of manufacturing optical fiber base material and apparatus therefor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-288177 | 2004-09-30 | ||
JP2004288177A JP4427425B2 (ja) | 2004-09-30 | 2004-09-30 | 光ファイバ母材の製造方法及び装置 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/730,061 Continuation US9028912B2 (en) | 2004-09-30 | 2007-03-29 | Method of manufacturing optical fiber base material and apparatus therefor |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2006038342A1 true WO2006038342A1 (ja) | 2006-04-13 |
Family
ID=36142430
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/009324 WO2006038342A1 (ja) | 2004-09-30 | 2005-05-23 | 光ファイバ母材の製造方法および装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US9028912B2 (ja) |
JP (1) | JP4427425B2 (ja) |
KR (2) | KR101164673B1 (ja) |
CN (1) | CN101031517B (ja) |
TW (1) | TW200616915A (ja) |
WO (1) | WO2006038342A1 (ja) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP7010803B2 (ja) | 2018-11-20 | 2022-02-10 | 信越化学工業株式会社 | 光ファイバ用多孔質ガラス母材の製造方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0322256Y2 (ja) * | 1985-10-31 | 1991-05-15 | ||
JPH10114534A (ja) * | 1996-10-07 | 1998-05-06 | Furukawa Electric Co Ltd:The | 光ファイバ用多孔質母材の製造装置及び製造方法 |
JP2001019439A (ja) * | 1999-07-01 | 2001-01-23 | Shin Etsu Chem Co Ltd | ガラス微粒子堆積体の製造装置 |
JP2003313042A (ja) * | 2002-02-22 | 2003-11-06 | Sumitomo Electric Ind Ltd | ガラス微粒子堆積体の製造装置 |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4101300A (en) * | 1975-11-27 | 1978-07-18 | Hitachi, Ltd. | Method and apparatus for drawing optical fiber |
JPH0322256A (ja) | 1989-03-14 | 1991-01-30 | Fuji Photo Film Co Ltd | 安定板 |
DE19628958C2 (de) * | 1996-07-18 | 2000-02-24 | Heraeus Quarzglas | Verfahren zur Herstellung von Quarzglaskörpern |
JP3521681B2 (ja) * | 1996-08-13 | 2004-04-19 | 住友電気工業株式会社 | 光ファイバ母材の製造方法 |
JPH10203843A (ja) | 1997-01-17 | 1998-08-04 | Furukawa Electric Co Ltd:The | 光ファイバ用多孔質ガラス母材の製造装置 |
US6245442B1 (en) * | 1997-05-28 | 2001-06-12 | Kabushiki Kaisha Toyota Chuo | Metal matrix composite casting and manufacturing method thereof |
JP2000256032A (ja) | 1999-03-05 | 2000-09-19 | Shin Etsu Chem Co Ltd | 光ファイバ用プリフォームの製造装置 |
US8516855B2 (en) * | 2001-04-27 | 2013-08-27 | Prysmian Cavi E Sistemi Energia S.R.L. | Method for producing an optical fiber preform |
EP1284246A3 (en) * | 2001-08-09 | 2004-02-04 | Sumitomo Electric Industries, Ltd. | Method and apparatus for producing porous glass soot body |
KR100507622B1 (ko) * | 2002-10-17 | 2005-08-10 | 엘에스전선 주식회사 | 외부기상증착법을 이용한 광섬유 프리폼의 제조방법 및 장치 |
US20040187525A1 (en) * | 2003-03-31 | 2004-09-30 | Coffey Calvin T. | Method and apparatus for making soot |
-
2004
- 2004-09-30 JP JP2004288177A patent/JP4427425B2/ja not_active Expired - Fee Related
-
2005
- 2005-02-21 KR KR1020050014013A patent/KR101164673B1/ko active IP Right Grant
- 2005-05-23 WO PCT/JP2005/009324 patent/WO2006038342A1/ja active Application Filing
- 2005-05-23 CN CN2005800332275A patent/CN101031517B/zh active Active
- 2005-05-23 KR KR1020077007072A patent/KR20070057216A/ko not_active Application Discontinuation
- 2005-09-29 TW TW094134011A patent/TW200616915A/zh unknown
-
2007
- 2007-03-29 US US11/730,061 patent/US9028912B2/en active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0322256Y2 (ja) * | 1985-10-31 | 1991-05-15 | ||
JPH10114534A (ja) * | 1996-10-07 | 1998-05-06 | Furukawa Electric Co Ltd:The | 光ファイバ用多孔質母材の製造装置及び製造方法 |
JP2001019439A (ja) * | 1999-07-01 | 2001-01-23 | Shin Etsu Chem Co Ltd | ガラス微粒子堆積体の製造装置 |
JP2003313042A (ja) * | 2002-02-22 | 2003-11-06 | Sumitomo Electric Ind Ltd | ガラス微粒子堆積体の製造装置 |
Also Published As
Publication number | Publication date |
---|---|
JP2006096642A (ja) | 2006-04-13 |
TW200616915A (en) | 2006-06-01 |
CN101031517B (zh) | 2010-09-08 |
US9028912B2 (en) | 2015-05-12 |
CN101031517A (zh) | 2007-09-05 |
KR101164673B1 (ko) | 2012-07-11 |
JP4427425B2 (ja) | 2010-03-10 |
KR20070057216A (ko) | 2007-06-04 |
KR20060043020A (ko) | 2006-05-15 |
US20070248755A1 (en) | 2007-10-25 |
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