CN107151093A - The preparation method and device of a kind of preform - Google Patents
The preparation method and device of a kind of preform Download PDFInfo
- Publication number
- CN107151093A CN107151093A CN201710498014.4A CN201710498014A CN107151093A CN 107151093 A CN107151093 A CN 107151093A CN 201710498014 A CN201710498014 A CN 201710498014A CN 107151093 A CN107151093 A CN 107151093A
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- China
- Prior art keywords
- collapsing
- pipe
- lathe
- preform
- plug
- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
- C03B37/01—Manufacture of glass fibres or filaments
- C03B37/012—Manufacture of preforms for drawing fibres or filaments
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01257—Heating devices therefor
-
- 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
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
-
- 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
- C03B37/01205—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments
- C03B37/01225—Means for changing or stabilising the shape, e.g. diameter, of tubes or rods in general, e.g. collapsing
- C03B37/01228—Removal of preform material
-
- 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
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The invention discloses a kind of preparation method of preform and device.Plug is fixed in collapsing pipe by methods described including (1)；(2) carry out collapsing and burn real, prefabricated rods embryo is made；(3) prefabricated rods embryo is polished as the preform of demand regulation.Described device includes collapsing lathe and fixed ringfeder；The fixed ringfeder is arranged at the collapsing lathe two ends, for plug and collapsing pipe to be fixed；The collapsing lathe includes collapsing stove and lathe, and the collapsing stove is used to carry out collapsing burning in fact, and the lathe is used to carry collapsing pipe, and the collapsing grate is on lathe.The made prefabricated rods of preparation method provided by the present invention have good improvement in terms of fiber geometries concentricity, non-circularity of cladding；Apparatus structure provided by the present invention is simple, sets rationally and possesses good compatibility and scalability, is easily installed and the transformation to existing equipment.
Description
Technical field
The invention belongs to preform manufacture field, a kind of preparation method more particularly, to preform and
Device.
Background technology
With the fast development of Fibre Optical Communication Technology, the use scope of optical fiber is more and more extensive, and in recent years, optical fiber is not only big
Amount is applied to general communication field, while being also applied to precise laser processing, astronomical observation, night vision monitoring, laser biology inspection
The field such as survey, in above-mentioned application, square optical fiber, the more traditional round fiber of profiled-cross-section optical fiber such as octagon optical fiber has
Higher coupling efficiency, extremely low focal ratio degradation and outstanding mould of disturbing homogenize effect.
The manufacture method of current prefabricated rods mainly has an outside vapor deposition, vapor axial deposition, chemical vapor deposition and wait from
Sub- chemical vapour deposition technique, wherein vapour deposition process be by the enterprising conduct of mandrel to or axial deposition, reburn and form rod, and
Chemical vapor deposition is then the silica glass state deposition that pure silicon dioxide or doping are carried out in quartzy inside pipe wall, is passed through again afterwards
Superfusion is real into rod, and the prefabricated rods institute drawing optical fiber of above method production is all substantially circle.
In existing technology, it is substantially and is improved for collapsing device, such as patent CN101182112B is to molten
The compression ring of contracting stove is optimized, and patent CN205313395U is that thermometric and heater are improved, and is all not involved with not
Prefabricated rods with cross sectional shape are manufactured, and current production polygon optical fiber is generally different using plug is worn into as ordinary optic fibre
Rod wire drawing is directly covered after shape, but the method usually there will be the geometrical issues such as core concentricity difference.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of preparation method of preform
And device, its object is to be fixed in fact by the way that plug and collapsing pipe are burnt, then polishing formation is carried out for the prefabricated of drawing optical fiber
Prepared by rod, it is ensured that geometry concentricity high unity, prefabricated rods regulatory criteria, the optical fiber for being especially suitable for non-circular sandwich layer, thus
Solve the technical problem of the fiber geometries concentricity of the method for preparing optical fiber preparation of prior art.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of preparation method of preform, bag
Include following steps：
(1) plug is fixed in collapsing pipe；
(2) the relatively-stationary plug and collapsing pipe that step (1) is obtained carry out collapsing and burn real, and prefabricated rods embryo is made；
(3) by preform of the prefabricated rods embryo polishing obtained in step (2) for demand regulation.
Preferably, the preparation method of the preform, its step (2) carries out collapsing using collapsing stove and burns real, control
Collapsing furnace temperature is between 1500 DEG C to 2000 DEG C, and collapsing stove speed is in 25mm/min between 100mm/min.
Preferably, the preparation method of the preform, its step (2) carries out collapsing and burns real-time so that the fixation
Plug and collapsing pipe synchronize rotation, preferably rotary speed can be 20 between 35rpm.
Preferably, the preparation method of the preform, its step (2) carries out collapsing and burns real-time, in the collapsing pipe
Gas is passed through between plug；The gas is preferably O2 and/or C2F6；It is preferred that control collapsing overpressure 0.2 to
Between 10mbar.
Preferably, the preparation method of the preform, its described plug is polygon plug, preferably described collapsing pipe
The quartz glass collapsing pipe being co-doped with for fluorine doped or fluorine germanium.
According to another aspect of the present invention there is provided a kind of preparation facilities of preform, including collapsing lathe and
Fixed ringfeder；The fixed ringfeder is arranged at the collapsing lathe two ends, for plug and collapsing pipe to be fixed；The collapsing car
Bed includes collapsing stove and lathe, and the collapsing stove is used to carry out collapsing burning in fact, and the lathe is used to carry collapsing pipe, the collapsing
Grate is on lathe.
Preferably, the preparation facilities of the preform, its described collapsing lathe also includes temperature control system, is used for
Control the temperature in collapsing stove.
Preferably, the preparation facilities of the preform, its described fixed ringfeder passes through rotary chuck and collapsing lathe
It is fixedly connected.
Preferably, the preparation facilities of the preform, its described fixed ringfeder is provided with the stomata for ventilating, described
Collapsing lathe also includes gas Flowrate Control System, is connected with the stomata on the ringfeder, for being ventilated into collapsing pipe；It is described
Gas Flowrate Control System, preferably includes admission line, outlet pipe, PLC control cabinet, gas flowmeter, pressure detector, pressure
Force controller, dust collector, vavuum pump and external ftercompction pipeline, the air inlet pipe control the fixation ringfeder and PLC of one end
Case processed be connected, the fixation ringfeder of the other end is connected by the escape pipe with PLC control cabinet, air inlet pipe provided with gas flowmeter with
Pressure detector, escape pipe is provided with pressure detector and pressure controller, is also associated with vavuum pump on escape pipe, escape pipe and
There is external ftercompction pipeline between vavuum pump, dust collector is provided between escape pipe and external ftercompction pipeline.
Preferably, the preparation facilities of the preform, its described fixed ringfeder includes sleeve, inner expanding sleeve, outer expanding sleeve
And fixing nut, the inner expanding sleeve and outer expanding sleeve be concentrically nested, with the sleeve connection, and the inner expanding sleeve is used for stationary core rod,
The outer expanding sleeve is used to fix collapsing pipe；The fixing nut is arranged on the outside of sleeve, for adjusting inner expanding sleeve and outer expanding sleeve；
Annular section on the sleeve between inner expanding sleeve and outer expanding sleeve junction is provided with passage.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
Existing preform preparation method, because sleeve pipe and plug can not consolidate combination well, causes to draw
Into optical fiber concentricity it is poor, especially for non-circular plug, such as polygon plug, concentricity issues are just more tight
Weight.Collapsing pipe and plug are sintered to fix by the method and apparatus that the present invention is provided, and are subsequently polished, it is ensured that preform
Concentricity, so as to improve optical fiber quality, the especially non-circularity of cladding of polygon optical fiber and core concentricity.The present invention passes through
Many experiments grope the conditions such as collapsing pipe, the material of rod core and collapsing temperature, speed, can closely tie collapsing pipe and plug
Close；Preferred scheme is further ensured that concentricity by the way of rotation collapsing；While using rotation collapsing, by incorporating O2Or
C2F6Gas, is processed by shot blasting to collapsing inside pipe wall, prefabricated rods defect is reduced, finally by negative-pressure ward, by rod core and collapsing
Pipe, which burns, to be melted, so as to overcome the problem of polygon rod core rib and face sinter uneven, it is adaptable to the collapsing of various cross sectional shape plugs.
In terms of comprehensive, the made prefabricated rods of preparation method provided by the present invention are in fiber geometries concentricity, non-circularity of cladding
In terms of have good improvement；Apparatus structure provided by the present invention is simple, set rationally and possess good compatibility and can
Autgmentability, is easily installed and the transformation to existing equipment.
Brief description of the drawings
Fig. 1 is the overall schematic of apparatus of the present invention；
Fig. 2 is apparatus of the present invention fixing device detail view.
Fig. 3 is that apparatus of the present invention fix the positive schematic cross-sectional view of ringfeder.
Fig. 4 is Fig. 3 right view.
Fig. 5 is the prefabricated rods interface schematic diagram of the embodiment of the present invention
In all of the figs, identical reference is used for representing identical element or structure, wherein：1 is gas flow
Meter, 2 be pressure detector, and 3 be inner expanding sleeve, and 4 be plug, and 5 be collapsing pipe, and 6 be collapsing stove, and 7 be pressure controller, and 8 be dust
Collector, 9 be external ftercompction pipeline, and 10 be vavuum pump, and 11 be PLC control cabinet, and 12 be stomata, and 13 be rotary chuck, and 14 be O-
RING, 15 be gland, and 16 be outer expanding sleeve, and 17 be center of collet sleeve pipe, and 18 be fixing nut.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Not constituting conflict each other can just be mutually combined.
The preparation method for the preform that the present invention is provided, comprises the following steps：
(1) plug 4 is fixed in collapsing pipe 5；The rod core is polygon plug 4, and preferably described collapsing pipe 5 is fluorine doped
Or the quartz glass collapsing pipe 5 that fluorine germanium is co-doped with.
(2) the relatively-stationary plug 4 and collapsing pipe 5 that step (1) is obtained carry out collapsing and burn real, and prefabricated rods embryo is made；
Collapsing is burnt is preferred to use collapsing stove 6 in fact, carries out rotation collapsing, that is, causes the plug 4 and collapsing pipe 5 of the fixation to enter
Row synchronous rotary, and ventilated in collapsing pipe 5.
It is as follows that specific collapsing burns real control parameter：
Control the temperature of collapsing stove 6 between 1500 DEG C to 2000 DEG C, the speed of collapsing stove 6 is in 25mm/min to 100mm/min
Between；Rotary speed can be 20 between 35rpm；Gas is preferably O2And/or C2F6；It is preferred that pressure exists in control collapsing pipe 5
0.2mbar is between 10mbar.
(3) by preform of the prefabricated rods embryo polishing obtained in step (2) for demand regulation.It is preferred that, added using cold
Regulation of the work polishing as demand, such as polishing is cylinder.
The preparation facilities for the preform that the present invention is provided, including collapsing lathe, fixed ringfeder and gas flow control
System processed；The fixed ringfeder, the two ends of collapsing lathe are fixedly installed on by rotary chuck 13.
The collapsing lathe includes collapsing stove 6, lathe and temperature control system, and the collapsing stove 6 is set up on lathe, along lathe
It is mobile, the collapsing pipe 5 of different parts is heated；The temperature control system, is connected with collapsing stove 6, for controlling in collapsing stove 6
Temperature.
The fixed ringfeder includes sleeve, inner expanding sleeve 3, outer expanding sleeve 16 and fixing nut 18, the inner expanding sleeve 3 and outer expanding sleeve
16 is concentrically nested, with the sleeve connection, and the inner expanding sleeve 3 is used for stationary core rod 4, and the outer expanding sleeve 16 is used to fix collapsing pipe
5；The fixing nut 18 is arranged on the outside of sleeve, for adjusting inner expanding sleeve 3 and outer expanding sleeve 16；Inner expanding sleeve 3 on the sleeve
Annular section between the junction of outer expanding sleeve 16 is provided with 6 symmetrical passages 12.Preferred scheme, the end of inner expanding sleeve 3
With Teflon guide rod, for facilitating plug 4 to assemble.
The gas Flowrate Control System, is connected with the stomata 12 on the ringfeder, for being ventilated into collapsing pipe 5；Institute
Gas Flowrate Control System is stated, admission line, outlet pipe, PLC control cabinet 11, gas flowmeter 1, pressure detection is preferably included
Device 2, pressure controller 7, dust collector 8, vavuum pump 10 and external ftercompction pipeline 9, the air inlet pipe is by the fixation of one end
Ringfeder is connected with PLC control cabinet 11, and the fixation ringfeder of the other end is connected by the escape pipe with PLC control cabinet 11, in air inlet pipe
Provided with gas flowmeter 1 and pressure detector 2, escape pipe is provided with pressure detector 2 and pressure controller 7, escape pipe also
Be connected with vavuum pump 10, there is external ftercompction pipeline 9 between escape pipe and vavuum pump 10, escape pipe and external ftercompction pipeline 9 it
Between be provided with dust collector 8.
It is embodiment below：
Embodiment 1
A kind of preparation facilities of preform, including collapsing lathe, fixed ringfeder and gas Flowrate Control System；
The fixed ringfeder, the two ends of collapsing lathe are fixedly installed on by rotary chuck 13.
The collapsing lathe includes collapsing stove 6, lathe and temperature control system, and the collapsing stove 6 is set up on lathe, along lathe
It is mobile, the collapsing pipe 5 of different parts is heated；The temperature control system, is connected with collapsing stove 6, for controlling in collapsing stove 6
Temperature.
The fixed ringfeder includes sleeve, inner expanding sleeve 3, outer expanding sleeve 16 and fixing nut 18, the inner expanding sleeve 3 and outer expanding sleeve
16 is concentrically nested, with the sleeve connection, and the inner expanding sleeve 3 is used for stationary core rod 4, and the outer expanding sleeve 16 is used to fix collapsing pipe
5；The fixing nut 18 is arranged on the outside of sleeve, for adjusting inner expanding sleeve 3 and outer expanding sleeve 16；Inner expanding sleeve 3 on the sleeve
Annular section between the junction of outer expanding sleeve 16 is provided with 6 symmetrical passages 12.Preferred scheme, the end of inner expanding sleeve 3
With Teflon guide rod, for facilitating plug 4 to assemble.
The gas Flowrate Control System, is connected with the stomata 12 on the ringfeder, for being ventilated into collapsing pipe 5；Institute
Gas Flowrate Control System is stated, admission line, outlet pipe, PLC control cabinet 11, gas flowmeter 1, pressure detection is preferably included
Device 2, pressure controller 7, dust collector 8, vavuum pump 10 and external ftercompction pipeline 9, the air inlet pipe is by the fixation of one end
Ringfeder is connected with PLC control cabinet 11, and the fixation ringfeder of the other end is connected by the escape pipe with PLC control cabinet 11, in air inlet pipe
Provided with gas flowmeter 1 and pressure detector 2, escape pipe is provided with pressure detector 2 and pressure controller 7, escape pipe also
Be connected with vavuum pump 10, there is external ftercompction pipeline 9 between escape pipe and vavuum pump 10, escape pipe and external ftercompction pipeline 9 it
Between be provided with dust collector 8.
Embodiment 2 to 4
A kind of device in preparation method of preform, Application Example 1, comprises the following steps：
(1) plug is fixed in collapsing pipe.Plug and the selection of collapsing pipe are as shown in table 1.
Specially：Plug 4 is placed in collapsing pipe 5, the fixed inner expanding sleeve 3 of two ends insertion, and by tightening ringfeder nut
18 contraction outer expanding sleeves 16 are fixed.
(2) the relatively-stationary plug and collapsing pipe that step (1) is obtained carry out collapsing and burn real, and prefabricated rods embryo is made；
It is specific to use collapsing stove, rotation collapsing is carried out, that is, causes the plug and collapsing pipe of the fixation to synchronize rotation,
And ventilated in collapsing pipe；Operation is as follows：
The collapsing pipe 5 for being fixed with plug assembled that step (1) is obtained is placed in collapsing lathe dog 13, is tightened
The gland 15 of center of collet sleeve pipe 17, collapsing pipe is fixed, then heated in collapsing stove 6 by extruding its internal O-RING14
Collapsing, is passed through gas out of fixed ringfeder passage 12 into collapsing pipe, and gas composition is one kind or two in O2 and C2F6
Kind, gas flow size is controlled by flowmeter 1, and pressure detector 2 and pressure are respectively provided with the pipeline of air inlet and outlet
Controller 7, gas flowmeter 1 and pressure controller 7 are connected with PLC control cabinet 11, the outlet pipe after pressure detector 2
On, it is respectively provided with dust collector 8, external ftercompction pipeline 9 and vavuum pump 10, pipe internal pressure during control pressurer system control collapsing
Power is 0.2~10mbar, when pressure detector detects pressure below or above some value, the pressure of triggering PLC control connections
The aperture of force controller, to be adjusted to pressure.
Specific collapsing burns real control parameter and is shown in Table 1.
(3) it is the preform of demand regulation by the prefabricated rods embryo polishing obtained in step (2), is polished using cold working
Into cylinder, its cross-sectional view is as shown in Figure 5.
Table 1
Wherein, r is the radius of plug in embodiment 1, and R is the prefabricated rods radius after collapsing；R is quadrangle in embodiment 2
1/2, R of plug catercorner length is the prefabricated rods radius after polishing；R is octagon plug catercorner length in embodiment 3
1/2, R is the prefabricated rods radius after polishing.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, it is not used to
The limitation present invention, any modifications, equivalent substitutions and improvements made within the spirit and principles of the invention etc., it all should include
Within protection scope of the present invention.
Claims (10)
1. a kind of preparation method of preform, it is characterised in that comprise the following steps：
(1) plug is fixed in collapsing pipe；
(2) the relatively-stationary plug and collapsing pipe obtained step (1) carries out collapsing and burns real, and prefabricated rods embryo is made；
(3) by preform of the prefabricated rods embryo polishing obtained in step (2) for demand regulation.
2. the preparation method of preform as claimed in claim 1, it is characterised in that step (2) is carried out using collapsing stove
Collapsing burns real, control collapsing furnace temperature between 1500 DEG C to 2000 DEG C, collapsing stove speed 25mm/min to 100mm/min it
Between.
3. the preparation method of preform as claimed in claim 1, it is characterised in that step (2) carries out collapsing and burns real-time,
So that the plug and collapsing pipe of the fixation synchronize rotation, preferably rotary speed can be 20 between 35rpm.
4. the preparation method of preform as claimed in claim 1, it is characterised in that step (2) carries out collapsing and burns real-time,
Gas is passed through between the collapsing pipe and plug；The gas is preferably O2 and/or C2F6；It is preferred that control collapsing overpressure
0.2 between 10mbar.
5. the preparation method of preform as claimed in claim 1, it is characterised in that the plug is polygon plug,
It is preferred that the collapsing pipe is the quartz glass collapsing pipe that fluorine doped or fluorine germanium are co-doped with.
6. a kind of preparation facilities of preform, it is characterised in that including collapsing lathe and fixed ringfeder；The fixation is risen
Set is arranged at the collapsing lathe two ends, for plug and collapsing pipe to be fixed；The collapsing lathe includes collapsing stove and lathe,
The collapsing stove is used to carry out collapsing burning in fact, and the lathe is used to carry collapsing pipe, and the collapsing grate is on lathe.
7. the preparation facilities of preform as claimed in claim 6, it is characterised in that the collapsing lathe also includes temperature
Control system, for controlling the temperature in collapsing stove.
8. the preparation facilities of preform as claimed in claim 6, it is characterised in that the fixed ringfeder passes through rotating clamp
Head is fixedly connected with collapsing lathe.
9. the preparation facilities of preform as claimed in claim 6, it is characterised in that the fixed ringfeder, which is provided with, to be used to lead to
The stomata of gas, the collapsing lathe also includes gas Flowrate Control System, is connected with the stomata on the ringfeder, for collapsing
Ventilated in pipe；The gas Flowrate Control System, preferably include admission line, outlet pipe, PLC control cabinet, gas flowmeter,
Pressure detector, pressure controller, dust collector, vavuum pump and external ftercompction pipeline, the air inlet pipe are consolidated one end
Determine ringfeder with PLC control cabinet to be connected, the fixation ringfeder of the other end is connected by the escape pipe with PLC control cabinet, sets in air inlet pipe
There are gas flowmeter and pressure detector, escape pipe is provided with pressure detector and pressure controller, escape pipe and is also associated with
Vavuum pump, has external ftercompction pipeline between escape pipe and vavuum pump, received between escape pipe and external ftercompction pipeline provided with dust
Storage.
10. the preparation facilities of preform as claimed in claim 6, it is characterised in that the fixed ringfeder include sleeve,
Inner expanding sleeve, outer expanding sleeve and fixing nut, the inner expanding sleeve and outer expanding sleeve are concentrically nested, with the sleeve connection, the inner expanding sleeve
For stationary core rod, the outer expanding sleeve is used to fix collapsing pipe；The fixing nut is arranged on the outside of sleeve, for adjusting internal expanding
Set and outer expanding sleeve；Annular section on the sleeve between inner expanding sleeve and outer expanding sleeve junction is provided with passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710498014.4A CN107151093B (en) | 2017-06-27 | 2017-06-27 | Preparation method and device of optical fiber preform |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710498014.4A CN107151093B (en) | 2017-06-27 | 2017-06-27 | Preparation method and device of optical fiber preform |
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| Publication Number | Publication Date |
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| CN107151093A true CN107151093A (en) | 2017-09-12 |
| CN107151093B CN107151093B (en) | 2020-06-02 |
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| CN201710498014.4A Active CN107151093B (en) | 2017-06-27 | 2017-06-27 | Preparation method and device of optical fiber preform |
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Cited By (5)
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| CN107804967A (en) * | 2017-10-27 | 2018-03-16 | 深圳市中科智诚科技有限公司 | A kind of intelligent fiber-pulling machine with slug collection function |
| CN108706865A (en) * | 2018-05-16 | 2018-10-26 | 上海大学 | A kind of more matrix method for preparing optical fiber of silica clad stick cored structure |
| CN113716859A (en) * | 2021-07-22 | 2021-11-30 | 付庆忠 | Optical fiber preform core rod melting and shrinking treatment sectional detection and stretching integrated equipment |
| CN114409242A (en) * | 2021-12-01 | 2022-04-29 | 浙江富通光纤技术有限公司 | Optical fiber preform manufacturing process and optical fiber |
| CN115521057A (en) * | 2022-09-22 | 2022-12-27 | 大族激光科技产业集团股份有限公司 | Optical fiber preform and method for manufacturing the same |
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| CN107804967A (en) * | 2017-10-27 | 2018-03-16 | 深圳市中科智诚科技有限公司 | A kind of intelligent fiber-pulling machine with slug collection function |
| CN107804967B (en) * | 2017-10-27 | 2021-03-23 | 四川和泰光纤有限公司 | Intelligent optical fiber drawing machine with scrap collecting function |
| CN108706865A (en) * | 2018-05-16 | 2018-10-26 | 上海大学 | A kind of more matrix method for preparing optical fiber of silica clad stick cored structure |
| CN113716859A (en) * | 2021-07-22 | 2021-11-30 | 付庆忠 | Optical fiber preform core rod melting and shrinking treatment sectional detection and stretching integrated equipment |
| CN114409242A (en) * | 2021-12-01 | 2022-04-29 | 浙江富通光纤技术有限公司 | Optical fiber preform manufacturing process and optical fiber |
| CN114409242B (en) * | 2021-12-01 | 2023-08-18 | 浙江富通光纤技术有限公司 | Process for manufacturing optical fiber preform and optical fiber |
| CN115521057A (en) * | 2022-09-22 | 2022-12-27 | 大族激光科技产业集团股份有限公司 | Optical fiber preform and method for manufacturing the same |
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