CN101519271B - Method of fabricating optical fiber perform - Google Patents
Method of fabricating optical fiber perform Download PDFInfo
- Publication number
- CN101519271B CN101519271B CN200910118650.5A CN200910118650A CN101519271B CN 101519271 B CN101519271 B CN 101519271B CN 200910118650 A CN200910118650 A CN 200910118650A CN 101519271 B CN101519271 B CN 101519271B
- Authority
- CN
- China
- Prior art keywords
- deposition
- ejiction opening
- gas
- gas ejiction
- burner
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
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
-
- 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
-
- 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
- C03B37/02—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
- C03B37/028—Drawing fibre bundles, e.g. for making fibre bundles of multifibres, image fibres
-
- 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
- C03B2207/04—Multi-nested ports
- C03B2207/12—Nozzle or orifice plates
-
- 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
- C03B2207/14—Tapered or flared nozzles or ports angled to central burner axis
-
- 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
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
A method of fabricating an optical fiber preform that can give stable and high deposition efficiency from the start to the end of the deposition when synthesizing a large size preform. When fabricating a preform by hydrolyzing a glass raw material gas in flame to generate glass particles and depositing the glass particles on a rotating starting material in the radial direction using a burner with a concentric multiple-tube structure having at least a plurality of small diameter combustion assisting gas-ejecting ports having the same focal length. L 1 is made greater than L 2 (L 1 > L 2) duringan early stage of deposition and L 2 is increased in the cource of the deposition so that L 2 is greater than L 1 (L 1 < L 2), where the focal length is denoted by L 1 and the distance from the tip o f the burner to a deposition plane on the starting material is denoted by L 2.
Description
Technical field
The present invention relates to by being hydrolyzed glass raw material gas to produce glass microballon and glass microballon to be deposited on to the method for manufacturing optical fiber preform on rotation growth material (starting material) in flame.
Background technology
Up to now, the whole bag of tricks for the manufacture of optical fiber preform has been proposed.Among these methods, be widely used outside vapor deposition (Outside Vapor PhaseDeposition Method, OVD method).In the method, when burner or rotation growth material are moved back and forth relatively, the glass microballon being produced by burner flame is deposited and is attached on rotation growth material, thus synthesizing porous matter precast body.Precast body is dehydrated and sintering in electric furnace.Because aforesaid method can provide to have the optical fiber preform of index distribution more arbitrarily and can produce in batches, there is large diameter precast body, therefore, be widely used the method.
Fig. 1 illustrates the overview for the manufacture of an example of the equipment of optical fiber preform.In the figure, by the empty rod of two ends welding (the dummy rod) 2 at plug 1, form deposition glass microballon (cigarette ash, soot) growth material, and by cast iron (ingot) clamp mechanism 4, supported the two ends of growth materials, so that growth material can be around its axis rotation.Direction towards growth material configures the burner 3 can move freely.From movable burner, to growth material, blow as SiCl
4deng steam and the combustion gases (hydrogen and oxygen) of raw material of optical fibre, and make soot deposits that hydrolysis in oxyhydrogen flame produces on growth material and form Porous optical fiber preform.Reference numeral 5 represents to discharge cover (exhaust hood).
By burner guide (not shown), support burner 3, thereby make burner 3 can move back and forth along the length direction of growth material and can keep out of the way from growth material, burner 3 can be towards the growth material jet flames rotating around axis.The glass microballon producing by the hydrolysis making by unstripped gas in flame deposits to manufacture Porous precast body.Then,, by making Porous precast body by the well heater portion of process furnace (not shown), this Porous precast body is dehydrated and by vitrifying, thereby becomes optical fiber preform.
For synthetic glass microballon and on growth material, deposit cigarette ash (glass microballon), use traditionally coaxial line multi-pipeline burner.Yet the burner with this structure can not mix glass raw material gas, inflammable or inflammable gas and burning assist gas fully, thereby can not produce enough glass microballons.As a result, can not boost productivity and be difficult to realize high speed synthetic.
In order to address the above problem, Japanese Patent No.1773359 has proposed a kind of multi-nozzle type burner, wherein, at inflammable gas ejiction opening, configure the burning assist gas ejiction opening (being hereinafter referred to as minor diameter ejiction opening) of a plurality of minor diameters, thereby make minor diameter ejiction opening surround central unstripped gas ejiction opening.
In addition, Japanese Patent No.3543537 has proposed to prevent from disturbing the method for flow of feed gas, wherein, and when using L
1represent the convergence length (focallength) of a plurality of minor diameter ejiction openings, and use L
2during the distance of expression from the front end of minor diameter ejiction opening to the glass microballon depositional plane of precast body, suggestion L
1be greater than L
2.On the contrary, disclose can be by making L for TOHKEMY 2003-226544 communique
1be less than L
2thereby improve the mixed efficiency that sedimentation effect increases gas.
Yet, make burner or growth material the glass microballon producing in burner flame be deposited and is attached in the OVD method on the growth material rotating when moving back and forth, along with the carrying out of deposition, the weight of precast body increases and the diameter of lithosomic body increases.Therefore, the carrying out along with deposition, increases the density that gas volume regulates lithosomic body conventionally.Deposition continues to carry out until the growth material that initial diameter is 50mm reaches the diameter of 300mm.
Initial stage in deposition, because depositional area is little, therefore, deposits with little gas line speed and little gas delivery volume.Therefore, from the gas of minor diameter ejiction opening ejection, easily disturb flowing of glass microballon, this interference has reduced sedimentation effect.In the second half section of deposition, diameter and the depositional area due to lithosomic body with increase increase, and therefore, with large gas line speed and large gas delivery volume, deposit.As a result, although little to the mobile interference of glass microballon from the gas of minor diameter ejiction opening ejection,, thereby the mixing ratio that exists large gas line speed to reduce gas reduces the problem of sedimentation effect.
Summary of the invention
The object of the invention is to address the above problem and provide a kind of and can carry out efficiently the generation of glass microballon and the method for deposition.Especially, the present invention relates to a kind ofly when synthetic large size prefabricated body, can start to the manufacture method that finishes all to produce optical fiber preform stable and that deposit efficiently from deposition.
According to a first aspect of the invention, provide a kind of manufacture method of optical fiber preform, it comprises:
Use has the burner of coaxial line multi-pipeline structure, and this burner at least has: the central glass raw material gas ejiction opening that is configured in described burner; Be configured in the inflammable gas ejiction opening in the outside of described glass raw material gas ejiction opening; And be configured in the inner side of described inflammable gas ejiction opening and be arranged in a plurality of minor diameters burning assist gas ejiction openings at least one circle of the circle concentric with described glass raw material gas ejiction opening, so that being focused at the mode of any, the axis separately of described a plurality of minor diameter burning assist gas ejiction openings on the same circle of the identical convergence length apart from convergent point, configures described a plurality of minor diameter burning assist gas ejiction opening;
From described glass raw material gas ejiction opening ejection glass raw material gas;
From being configured in the described inflammable gas ejiction opening ejection inflammable gas in the outside of described glass raw material gas ejiction opening;
From described a plurality of minor diameter burning assist gas ejiction opening ejection burning assist gass;
Hydrolysis is from the glass raw material gas of described glass raw material gas ejiction opening ejection, to produce glass microballon;
Radially on rotation growth material, deposit described glass microballon,
Initial stage in deposition, makes L
1be greater than L
2(L
1> L
2), wherein, the convergence length of described a plurality of minor diameter burning assist gas ejiction openings is defined as to L
1, by the distance definition of the front end depositional plane on growth material to glass microballon from described a plurality of minor diameter burning assist gas ejiction openings, be L
2; And
In deposition process, make L
2increase, make L
2be greater than L
1(L
1< L
2).
According to a second aspect of the invention, provide a kind of manufacture method of optical fiber preform, wherein, make described burner away from described glass microballon the depositional plane on described growth material mobile, make described distance L
2along with deposition increases and makes the external diameter of described precast body increase and increase, thereby realize L
1< L
2relation.
According to a third aspect of the invention we, a kind of manufacture method of optical fiber preform is provided, wherein, make described burner away from described glass microballon the depositional plane on described growth material mobile, make external diameter when described precast body increase to the roughly implementation relation L three times time of the diameter of described growth material
1=L
2.
The present invention can not cause at high sedimentation effect in the situation jumpy of density and with stable state, carry out providing the effect being highly profitable aspect successive sedimentation from start to end.
Accompanying drawing explanation
From with reference to the accompanying drawings, to the explanation of exemplary embodiment, it is obvious that further feature of the present invention will become.
Fig. 1 is the schematic diagram illustrating for the overview of the equipment by outside vapor deposition (OVD method) manufacture porous glass precast body;
Fig. 2 A be illustrate that the present invention uses for the synthesis of glass microballon and there is the schematic diagram of front end of the burner of minor diameter ejiction opening;
Fig. 2 B is the sectional view of the front end of the burner in Fig. 2 A;
Fig. 3 A is that the initial stage that is illustrated in deposition is assembled length L
1with the distance L from burner front end to depositional plane
2between the figure of relation;
Fig. 3 B assembles length L the second half section that is illustrated in deposition
1with the distance L from burner front end to depositional plane
2between the figure of relation;
Fig. 4 is the figure that the relation between deposition weight and sedimentation rate is shown.
Embodiment
To achieve these goals, present inventor finds according to result of study: in the initial stage of deposition and the second half section of deposition, suitably set respectively the convergence length of minor diameter ejiction opening and to the relation the distance of the depositional plane of glass microballon, be important from the front end of ejiction opening, thereby realized the present invention.
That is to say, in the burner shown in Fig. 2 A and Fig. 2 B, as shown in Figure 3 A and Figure 3 B, use L
1expression, from the convergence length of the air-flow of a plurality of nozzle of small diameter 106 ejections, configures the plurality of nozzle of small diameter 106 in concentrically ringed mode, and the axis separately of the plurality of nozzle of small diameter 106 is focused on a bit.Use L
2the distance of expression from the front end of nozzle 106 to glass microballon depositional plane 107.At the burning assist gas from ejiction opening ejection, can easily disturb the initial stage of the deposition of glass microballon stream, by setting L
1> L
2, can accelerate mixed in the outside of central streams of inflammable gas and burning assist gas, and can not disturb the central streams of glass microballon.Thereby, improved sedimentation effect.
In the present invention, the second half section of deposition can be defined as the time period that roughly time of three times of the diameter from the diameter accretion of lithosomic body to growth material starts.
On the contrary, in the second half section deposition process increasing in the linear velocity of gas volume and air-flow, from the burning auxiliary gas flow of nozzle of small diameter 106 ejections, affect hardly glass microballon stream, and glass microballon stream is disturbed hardly, but on the other hand, gas mixes decrease in efficiency.Therefore, by setting L
1< L
2, from the burning assist gas of nozzle of small diameter 106, before Collision deposition body, in focal position, collide consumingly raw material flame, thereby accelerate energetically the mixed reaction of inflammable gas, burning assist gas and glass microballon.Thereby, can improve sedimentation effect.
Between depositional stage, regulate the convergence length L of nozzle of small diameter 106
1difficult.Therefore, can be by regulating the distance L from burner front end to depositional plane
2carry out L
1and L
2between the adjusting of relation.Particularly, from deposition initial stage to deposition second half section, by making burner 100 move to increase distance L away from depositional plane reposefully
2, can make L
1< L
2and with stable state continuance, deposit, and can not produce the variable density sharply of the precast body of deposition.
Hereinafter, with reference to embodiment and comparative example, be described more specifically embodiments of the present invention, still, the invention is not restricted to this.
embodiment 1
Utilize equipment and OVD method as shown in Figure 1 that glass microballon is deposited on growth material.By the sky rod that is 50mm by external diameter, being welded to two of plug 1 brings in and forms growth material.Plug 1 also has the external diameter of 50mm and has the length of 2000mm.By the 100 deposition microballons of the burner with coaxial line five heavy pipeline structures as shown in Figure 2 A and 2 B, thereby manufacture optical fiber preform.
Burner 100 comprises: the first pipeline 101, and it is configured in the central authorities of burner 100, to form glass raw material gas ejiction opening 101P; The second pipeline 102, it is configured in the outside of the first pipeline 101, to be formed for spraying the sealed gas ejiction opening 102P of sealed gas; And the 3rd pipeline 103, it is configured in the more lateral of the second pipeline 102, to be formed for spraying the inflammable gas ejiction opening 103P of inflammable gas.Burner 100 also comprises eight minor diameter burning assist gas ejiction opening nozzles 106 in the inflammable gas ejiction opening 103P being contained between the second pipeline 102 and the 3rd pipeline 103.With equidistant interval, nozzle 106 is configured in to the upper of the circle concentric with central glass raw material gas ejiction opening 101P, thereby is formed for ejection burning assist gas and assembles length L
1the minor diameter burning assist gas ejiction opening 106P of=150mm.That is to say, as shown in Figure 2 A and 2 B, by bent nozzle 106, make the axis separately of nozzle 106 be focused at the concentric manner configuration nozzle 106 of a bit.Burner 100 also comprises: the 4th pipeline 104, and it is configured in the outside of the 3rd pipeline 103, to be formed for spraying the sealed gas ejiction opening 104P of sealed gas; And the 5th pipeline 105, it is configured in the outside of the 4th pipeline 104, to be formed for the burning assist gas ejiction opening 105P of ejection burning assist gas.
From deposition, start to finish to deposition, in scope separately as described below, supply with each gas, and the delivery rate of gas is increased gradually.That is to say, to the first pipeline 101 of burner, supply with the SiCl as glass raw material gas of 1.0～10L/min
4and the burning assist gas O of 5～20L/min
2; To the second pipeline 102, supply with the sealed gas N of 4～6L/min
2; To the 3rd pipeline 103, supply with the inflammable gas H of 70～170L/min
2; To the 4th pipeline 104, supply with the sealed gas N of 4～6L/min
2; To the 5th pipeline 105, supply with the burning assist gas O of 20～50L/min
2; In addition to main line (not shown), supply with, the burning assist gas O of 5～20L/min
2, be arranged on the minor diameter ejiction opening nozzle 106Cong Gai main line branch in the 3rd pipeline 103.On growth material, deposit the glass microballon of 100kg.In table 1, concentrate kind and the feed rate of the gas of having listed each pipeline that is supplied to burner that comprises comparative example 1 and 2.
Convergence length at a plurality of minor diameter ejiction opening 106P is set to L
1=150mm and until the distance of depositional plane 107 is set to L
2under the state of=125mm, start deposition.Along with lithosomic body, grow up, burner moved away from depositional plane gradually, thus roughly the diameter of lithosomic body be 150mm, be growth material diameter roughly make L three times time
1equal L
2, and when deposition finishes, make L
2equal 175mm.In table 2, concentrate the sedimentation rate listed each typical value with respect to deposition weight that the deposition results as embodiment 1 obtains, in table 2, also listed the result of comparative example 1 and 2.Here, the sedimentation effect of embodiment 1 and comparative example 1 and 2 is respectively 64.0%, 60.9% and 56.9%.In addition the average sedimentation rate of every 5kg deposition weight shown in Fig. 4.As can be seen from Figure 4,, between depositional stage, the sedimentation rate of embodiment 1 is more excellent than the sedimentation rate of the comparative example 1 of explanation after a while and 2.
Table 1
| The kind of gas | Flow (L/min) | |
| The first pipeline 101 (glass raw material gas ejiction opening) | SiCl 4 O 2 | 1.0～10 5～20 |
| The second pipeline 102 (sealed gas ejiction opening) | Sealed gas (N 2) | 4～6 |
| The 3rd pipeline 103 (inflammable gas ejiction opening) | H 2 | 70～170 |
| The 4th pipeline 104 (sealed gas ejiction opening) | Sealed gas (N 2) | 4～6 |
| The 5th pipeline 105 (burning assist gas ejiction opening) | O 2 | 20～50 |
| Minor diameter burning assist gas ejiction opening nozzle 106 | O 2 | 5～20 |
Table 2
comparative example 1
Except the convergence length at minor diameter ejiction opening is set to L
1=150mm and the distance to depositional plane is remained to L
2outside depositing under the state of=125mm, in the mode identical with embodiment 1, on growth material, deposit 100kg glass microballon.As shown in Figure 4, in the initial stage of deposition, the sedimentation rate in sedimentation rate and embodiment 1 is roughly the same, but in the second half section of deposition, sedimentation rate is poorer than the sedimentation rate in embodiment 1.
comparative example 2
Except the convergence length at minor diameter ejiction opening is set to L
1=150mm and be retained as L to the distance of depositional plane
2outside depositing under the state of=175mm, in the mode identical with embodiment 1, on growth material, deposit 100kg glass microballon.
As shown in Figure 4, in the initial stage of deposition, sedimentation rate is poorer than the sedimentation rate in embodiment 1, but in the second half section of deposition, the sedimentation rate in sedimentation rate and embodiment 1 is roughly the same.
According to the present invention, significantly improved the sedimentation effect of glass microballon, thereby improved the productivity of porous glass precast body.
Although with reference to exemplary embodiment, the present invention has been described,, should be appreciated that and the invention is not restricted to disclosed exemplary embodiment.The scope of appended claims will meet the widest explanation, thereby comprises all modification, equivalent structure and function.
The application requires the right of priority of the Japanese patent application No.2008-046843 of submission on February 27th, 2008, and the full content of this Japanese patent application is contained in this by reference.
Claims (3)
1. a manufacture method for optical fiber preform, it comprises:
Use has the burner of coaxial line multi-pipeline structure, and this burner at least has: the central glass raw material gas ejiction opening that is configured in described burner; Be configured in the inflammable gas ejiction opening in the outside of described glass raw material gas ejiction opening; And be configured in the inner side of described inflammable gas ejiction opening and be arranged in a plurality of minor diameters burning assist gas ejiction openings at least one circle of the circle concentric with described glass raw material gas ejiction opening, so that being focused at the mode of any, the axis separately of described a plurality of minor diameter burning assist gas ejiction openings on the same circle of the identical convergence length apart from convergent point, configures described a plurality of minor diameter burning assist gas ejiction opening;
From described glass raw material gas ejiction opening ejection glass raw material gas;
From being configured in the described inflammable gas ejiction opening ejection inflammable gas in the outside of described glass raw material gas ejiction opening;
From described a plurality of minor diameter burning assist gas ejiction opening ejection burning assist gass;
Hydrolysis is from the glass raw material gas of described glass raw material gas ejiction opening ejection, to produce glass microballon;
Radially on rotation growth material, deposit described glass microballon,
From deposition, start to finish to deposition, the delivery rate of each gas increased gradually,
In the initial stage of deposition, set L
1and L
2ratio be L
1> L
2, wherein, the convergence length of described a plurality of minor diameter burning assist gas ejiction openings is defined as to L
1, by the distance definition of the front end depositional plane on growth material to glass microballon from described a plurality of minor diameter burning assist gas ejiction openings, be L
2; And
In deposition process, make L
2increase, make L
2be greater than L
1(L
1< L
2), wherein, in the second half section of deposition, reach L
1< L
2.
2. the manufacture method of optical fiber preform according to claim 1, is characterized in that, make described burner away from described glass microballon the depositional plane on described growth material mobile, make described distance L
2along with deposition increases and makes the external diameter of described precast body increase and increase, thereby realize L
1< L
2relation.
3. the manufacture method of optical fiber preform according to claim 2, it is characterized in that, make described burner away from described glass microballon the depositional plane on described growth material mobile, make external diameter when described precast body increase to the roughly implementation relation L three times time of the diameter of described growth material
1=L
2.
Applications Claiming Priority (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2008046843 | 2008-02-27 | ||
| JP2008-046843 | 2008-02-27 | ||
| JP2008046843 | 2008-02-27 | ||
| JP2009025195 | 2009-02-05 | ||
| JP2009025195A JP5264543B2 (en) | 2008-02-27 | 2009-02-05 | Manufacturing method of optical fiber preform |
| JP2009-025195 | 2009-02-05 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101519271A CN101519271A (en) | 2009-09-02 |
| CN101519271B true CN101519271B (en) | 2014-09-24 |
Family
ID=41080095
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910118650.5A Active CN101519271B (en) | 2008-02-27 | 2009-02-27 | Method of fabricating optical fiber perform |
Country Status (2)
| Country | Link |
|---|---|
| KR (1) | KR101035467B1 (en) |
| CN (1) | CN101519271B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011230936A (en) * | 2010-04-23 | 2011-11-17 | Shin-Etsu Chemical Co Ltd | Burner for manufacturing porous glass preform |
| JP5234672B2 (en) * | 2010-09-24 | 2013-07-10 | 信越化学工業株式会社 | Quartz glass burner |
| JP5748633B2 (en) * | 2011-10-18 | 2015-07-15 | 信越化学工業株式会社 | Burner for manufacturing porous glass base material and method for manufacturing porous glass base material |
| CN103964684A (en) * | 2014-04-30 | 2014-08-06 | 长飞光纤光缆股份有限公司 | Machine tool for depositing optical fiber preform rods by outside chemical vapor deposition method |
| CN107056042B (en) * | 2017-04-17 | 2023-05-09 | 江苏亨通光导新材料有限公司 | Blowtorch of optical fiber preform |
| CN110966607B (en) * | 2019-12-26 | 2022-04-15 | 中天科技精密材料有限公司 | Natural gas auxiliary flame treatment burner |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0237183A1 (en) * | 1986-02-12 | 1987-09-16 | The Furukawa Electric Co., Ltd. | Torch for fabricating optical fibre preform |
| US6334339B1 (en) * | 1998-12-25 | 2002-01-01 | The Furukawa Electric Co., Ltd. | Hooded torch for synthesizing glass particulates |
| JP2003226544A (en) * | 2002-02-01 | 2003-08-12 | Fujikura Ltd | Method of manufacturing optical fiber porous preform |
| JP5323130B2 (en) * | 2011-05-26 | 2013-10-23 | 富士フイルム株式会社 | Fluorescence analyzer and fluorescence analysis method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3543537B2 (en) | 1996-05-09 | 2004-07-14 | 住友電気工業株式会社 | Method for synthesizing glass fine particles and focus burner therefor |
| JP2003238186A (en) | 2002-02-14 | 2003-08-27 | Fujikura Ltd | Method for processing glass rod for optical fiber |
| KR100507623B1 (en) | 2002-11-06 | 2005-08-10 | 엘에스전선 주식회사 | Burner for making fine particles for deposition of silica particles |
-
2008
- 2008-11-28 KR KR1020080119262A patent/KR101035467B1/en active IP Right Grant
-
2009
- 2009-02-27 CN CN200910118650.5A patent/CN101519271B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0237183A1 (en) * | 1986-02-12 | 1987-09-16 | The Furukawa Electric Co., Ltd. | Torch for fabricating optical fibre preform |
| US6334339B1 (en) * | 1998-12-25 | 2002-01-01 | The Furukawa Electric Co., Ltd. | Hooded torch for synthesizing glass particulates |
| JP2003226544A (en) * | 2002-02-01 | 2003-08-12 | Fujikura Ltd | Method of manufacturing optical fiber porous preform |
| JP5323130B2 (en) * | 2011-05-26 | 2013-10-23 | 富士フイルム株式会社 | Fluorescence analyzer and fluorescence analysis method |
Also Published As
| Publication number | Publication date |
|---|---|
| KR20090092686A (en) | 2009-09-01 |
| CN101519271A (en) | 2009-09-02 |
| KR101035467B1 (en) | 2011-05-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101519271B (en) | Method of fabricating optical fiber perform | |
| JP5236526B2 (en) | Burner for manufacturing porous glass base material | |
| AU776420B2 (en) | Burner for synthesizing glass particles and method for producing porous glass body | |
| US20140165656A1 (en) | Method of fabricating an optical fiber preform and a burner therefor | |
| JP2003226544A (en) | Method of manufacturing optical fiber porous preform | |
| US8517721B2 (en) | Burner for fabricating optical fiber preform | |
| RU2243944C2 (en) | Method of production of optical fiber billet and design of torch to realize the method | |
| JP2005524597A (en) | Burner assembly for producing glass preform and corresponding production method | |
| KR101035437B1 (en) | Burner for producing porous glass preform | |
| CN109626809B (en) | Method for preparing porous glass deposit for optical fiber | |
| JP5264543B2 (en) | Manufacturing method of optical fiber preform | |
| CN101838103B (en) | Method for manufacturing optical fiber base material | |
| KR101036064B1 (en) | Burner for producing porous glass preform | |
| CN101519269A (en) | Method of fabricating an optical fiber preform and a burner therefor | |
| CN103992029A (en) | Porous glass base material manufacturing burner and optical fiber porous glass base material manufacturing apparatus | |
| JP3953820B2 (en) | Method for manufacturing optical fiber porous preform | |
| JP7195703B2 (en) | Burner for synthesizing porous body and method for producing porous body | |
| US8312744B2 (en) | Burner for producing glass fine particles and method for manufacturing porous glass base material using the same | |
| JP2004323319A (en) | Quartz burner, and method of producing glass particulate deposit |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |