CN106396360A - Method for preparing gain fiber through online fusion shrinking and drawing - Google Patents
Method for preparing gain fiber through online fusion shrinking and drawing Download PDFInfo
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- CN106396360A CN106396360A CN201610765314.XA CN201610765314A CN106396360A CN 106396360 A CN106396360 A CN 106396360A CN 201610765314 A CN201610765314 A CN 201610765314A CN 106396360 A CN106396360 A CN 106396360A
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- Prior art keywords
- optical fiber
- sleeve pipe
- preparation
- online
- wire drawing
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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
- C03B37/01211—Manufacture of preforms for drawing fibres or filaments starting from tubes, rods, fibres or filaments by inserting one or more rods or tubes into a tube
-
- 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
-
- 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
- C03B37/027—Fibres composed of different sorts of glass, e.g. glass optical fibres
-
- 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
- C03C15/00—Surface treatment of glass, not in the form of fibres or filaments, by etching
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
Abstract
The invention belongs to the technical field of preparation of optical fibers, and discloses a method for preparing a gain fiber through online fusion shrinking and drawing. The method comprises the following steps of preparing an optical fiber perform rod core rod; pickling the core rod with a hydrofluoric acid solution; preparing a non-circular-shape sleeve; pickling the sleeve with the hydrofluoric acid solution; conducting combining and sleeving on the non-circular-shape sleeve and the optical fiber perform rod core rod to form an optical fiber perform rod combination piece; and conducting online fusion shrinking, drawing and coating on the optical fiber perform rod combination piece on a drawing tower to form a double-cladding active optical fiber. The method for preparing the optical fiber, provided by the invention, has the advantages of improving quality reliability of the optical fiber, improving concentricity, inhibiting introduction of impurities, reducing optical fiber processing damage, and improving the production efficiency.
Description
Technical field
The present invention relates to optical fiber preparing technical field, particularly to a kind of gain fibre preparation side of online collapsing wire drawing
Method.
Background technology
Since laser was 20th century, after atomic energy, computer, quasiconductor, the another important invention of the mankind.High power
Optical fiber laser, as industrial laser of new generation, is widely used in industrial materials processing, high-end manufacture field, obtains in recent years
The extensive attention of each major industrial country of the world.It is clear that in optical fiber laser industrial chain, special optical fiber and optical-fiber laser
Device is closely related, and the manufacture of optical fiber laser is related to multiple active and passive fiber, and wherein it is crucial that double cladding large mode
The rear-earth-doped Active Optical Fiber in field.
The structure of double cladding large mode field Active Optical Fiber, by the fibre core of doping with rare-earth ions, transmits inner cladding and the shape of pump light
The part such as low-refraction surrounding layer of pump waveguide is become to form, because pump light just can be by rare earth ion only when by fibre core
Absorb simultaneously and then realize laser amplifier effect, for improving the absorption efficiency of pump light, need to destroy the cylindrosymmetry of inner cladding
To reduce the generation of spiral light, this generally can by by inner cladding be contoured to non-circular realizing, such as octagon.Cause
This, the preparation of double cladding large mode field Active Optical Fiber generally includes plug, sleeve pipe, polishing, the step such as wire drawing and test.Active Optical Fiber
Plug preparation can adopt MCVD method, also can be selected for other methods such as OVD, VAD and PCVD etc..After the completion of plug, typically pass through
Sleeve pipe technique, will plug insert appropriate size sleeve pipe, under the action of heat, by sleeve pipe collapsing to plug, make optical fiber
Prefabricated rods, are required with the core bag ratio reaching design, the preform that sleeve pipe completes is processed into not rounded using mechanical grinding
The preform of profile, finally carries out wire drawing coating and test.
Above-mentioned tandem technological process currently used for the production of Active Optical Fiber, but, this conventional online collapsing wire drawing
There is following shortcoming in gain fibre preparation method：Plug is carried out in sleeve pipe and bruting process, can introduce light to some extent
Fine concentricity declines, and should not control optical fiber quality；Because plug manufacturing cost is higher, subsequent technique once make a fault it is difficult to
Remedy, scrap cost is high；The tandem technological process production cycle is longer, is unfavorable for the raising of production efficiency；Prefabricated rods polishing by
Easily cause whole preform cracking in residual mechanical stress, production risk is larger.
Content of the invention
The present invention provides a kind of gain fibre preparation method of online collapsing wire drawing, solves the course of processing in prior art and draws
Enter concentricity, bruting process causes the technical problem that prefabricated rods are damaged simultaneously.
For solving above-mentioned technical problem, the invention provides a kind of gain fibre preparation method of online collapsing wire drawing, bag
Include：
Prepare optical fiber prefabricated rod mandrel；
Using optical fiber prefabricated rod mandrel described in hydrofluoric acid solution pickling, go the removal of impurity；
The sleeve pipe of preparation non-circular shape；
Using hydrofluoric acid solution pickling described sleeve pipe, go the removal of impurity；
Described sleeve pipe and described optical fiber prefabricated rod mandrel are combined set and dress up preform molectron；
Described preform molectron is arranged on wire-drawer-tower and carries out online collapsing, wire drawing and coating, make double-contracting
Layer Active Optical Fiber.
Further, described sleeve pipe inwall and the gap of described preform are less than or equal to 0.5mm.
Further, described sleeve pipe is placed in described HF solution soak time and is more than or equal to 15min.
Further, described sleeve pipe is quartz glass tube.
Further, described sleeve pipe is the silica glass tube of doping, and its refractive index is equal to or less than silicon dioxide glass
The refractive index of glass.
Further, the step of described preparation non-circular shape sleeve pipe includes：Individually the outer wall of circular glass pipe is carried out machine
Tool is polished into non-circular shape sleeve pipe；
Wherein, described non-circular shape sleeve pipe include octagon or regular hexagon or square or rectangle or
" D " shape.Further, described optical fiber prefabricated rod mandrel is placed in described HF solution soak time and is more than or equal to 10min.
Further, described optical fiber prefabricated rod mandrel of preparing includes：
With the plug of MCVD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other；
With the plug of OVD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other；
With the plug of VAD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other；
With the plug of PCVD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other.
The one or more technical schemes providing in the embodiment of the present application, at least have the following technical effect that or advantage：
The gain fibre preparation method of the online collapsing wire drawing providing in the embodiment of the present application, on the one hand passes through optical fiber processing
Process is processed in order, cooperation HF solution soaking operation, and impurity during substantially reducing introduces it is ensured that the quality of optical fiber；Another
Aspect, by the sleeve pipe of separately machined one-tenth non-circular shape, then avoids the moulding processed of prefabricated rods again with plug combined complete
Cheng Zaocheng preform damages, and keeps preferable concentricity simultaneously；3rd, prepared by the preparation of non-circular shape sleeve pipe and fibre-optical mandrel
Independent parallel can carry out, substantially increase production efficiency；4th, non-circular shape sleeve pipe can individually be tested, if any error, can
Take suitable remedial measure.
Brief description
Fig. 1 is the flow chart of the gain fibre preparation method of online collapsing wire drawing provided in an embodiment of the present invention；
Fig. 2 is optical fiber prefabricated rod mandrel rod core provided in an embodiment of the present invention and cladding structure schematic diagram；
Fig. 3 is the structural representation of sleeve pipe provided in an embodiment of the present invention；
Fig. 4 is the structural representation of combination of fiber-optic prefabricated rods provided in an embodiment of the present invention；
Fig. 5 is Active Optical Fiber structural representation provided in an embodiment of the present invention.
Specific embodiment
The embodiment of the present application is passed through to provide a kind of gain fibre preparation method of online collapsing wire drawing, solves in prior art
The course of processing introduces impurity, and bruting process causes the technical problem that prefabricated rods are damaged simultaneously；Reach suppression impurity to introduce, lifting
Optical fiber quality；Reduce the technique effect of moulding damage.
In order to be better understood from technique scheme, below using octagon prefabricated rods as example, in conjunction with Figure of description
And specific embodiment is described in detail it should be understood that in the embodiment of the present invention and embodiment to technique scheme
Specific features be the detailed description to technical scheme, rather than the restriction to technical scheme, do not rushing
In the case of prominent, the technical characteristic in the embodiment of the present application and embodiment can be mutually combined.
Referring to Fig. 1～Fig. 5, a kind of gain fibre preparation method of online collapsing wire drawing provided in an embodiment of the present invention, bag
Include：
Prepare optical fiber prefabricated rod mandrel (1,2)；
Described optical fiber prefabricated rod mandrel is placed in described HF solution and soaks, go the removal of impurity；
Prepare octagon sleeve pipe 3；
Described sleeve pipe is carried out coupling cutting according to described optical fiber prefabricated rod mandrel size, is placed in HF solution soaking, goes
The removal of impurity；
Described octagon sleeve pipe and described optical fiber prefabricated rod mandrel are combined set and dress up preform molectron
4；
By described preform molectron on wire-drawer-tower online collapsing, double-cladding active light is made in wire drawing and coating
Fine.
Specifically it is simply that structure from the inside to surface is order according to prefabricated rods, individually prepare all parts, a side
Face can lift working (machining) efficiency, the reliability of holding structure and quality, by HF solution, suppresses the introducing of impurity；Further, will
Separately machined plug and sleeve pipe are assembled, it is to avoid the moulding damage causing preform.
Referring to Fig. 5, double-deck coating includes：Undercoating 5 and external coating 6.
Specifically, the described step preparing octagon sleeve pipe includes：Individually circular glass pipe is carried out mechanical grinding one-tenth
Octagon sleeve pipe.That is, will sleeve pipe depart from plug separately machined, after the completion of again with plug assemble, it can be avoided that processing impurity draw
Enter, avoid damage to prefabricated rods simultaneously.
Preferably, described sleeve pipe inwall and the gap of described optical fiber prefabricated rod mandrel are less than or equal to
0.5mm.
Specifically, described sleeve pipe is quartz glass tube, described sleeve pipe be placed in described HF solution soak time be more than or
Equal to 15min；Described optical fiber prefabricated rod mandrel is placed in soak time in described HF solution and is more than or equal to 10min.Held by HF
Easily get rid of impurity in the course of processing it is ensured that the reliability of optical fiber.
This patent prepares double cladding large mode field Active Optical Fiber using the method that direct octagon sleeve pipe combines wire drawing with plug,
Other special-shaped sleeve pipes are combined wire drawing and prepare the protection domain that double cladding large mode field Active Optical Fiber etc. is this patent with plug.
The one or more technical schemes providing in the embodiment of the present application, at least have the following technical effect that or advantage：
The gain fibre preparation method of the online collapsing wire drawing providing in the embodiment of the present application, on the one hand passes through optical fiber processing
Process is processed in order, cooperation HF solution soaking operation, and impurity during substantially reducing introduces it is ensured that the quality of optical fiber；Another
Aspect, by the sleeve pipe of separately machined one-tenth non-circular shape, then avoids the moulding processed of prefabricated rods again with plug combined complete
Cheng Zaocheng preform damages, and keeps preferable concentricity simultaneously；3rd, prepared by the preparation of non-circular shape sleeve pipe and fibre-optical mandrel
Independent parallel can carry out, substantially increase production efficiency；4th, non-circular shape sleeve pipe can individually be tested, if any error, can
Take suitable remedial measure.
It should be noted last that, above specific embodiment only in order to technical scheme to be described and unrestricted,
Although being described in detail to the present invention with reference to example, it will be understood by those within the art that, can be to the present invention
Technical scheme modify or equivalent, without deviating from the spirit and scope of technical solution of the present invention, it all should be covered
In the middle of scope of the presently claimed invention.
Claims (8)
1. a kind of gain fibre preparation method of online collapsing wire drawing is it is characterised in that include：
Prepare optical fiber prefabricated rod mandrel；
Using optical fiber prefabricated rod mandrel described in hydrofluoric acid solution pickling, go the removal of impurity；
The sleeve pipe of preparation non-circular shape；
Using hydrofluoric acid solution pickling described sleeve pipe, go the removal of impurity；
Described sleeve pipe and described optical fiber prefabricated rod mandrel are combined set and dress up preform molectron；
Described preform molectron is arranged on wire-drawer-tower and carries out online collapsing, wire drawing and coating, making double clad has
Source optical fiber.
2. online collapsing wire drawing as claimed in claim 1 gain fibre preparation method it is characterised in that：Described sleeve pipe interior
Wall is less than or equal to 0.5mm with the gap of described optical fiber prefabricated rod mandrel.
3. online collapsing wire drawing as claimed in claim 1 gain fibre preparation method it is characterised in that：Described sleeve pipe is placed in
In described hydrofluoric acid solution, soak time is more than or equal to 15 minutes.
4. online collapsing wire drawing as claimed in claim 3 gain fibre preparation method it is characterised in that：Described sleeve pipe is stone
English glass tubing.
5. online collapsing wire drawing as claimed in claim 3 gain fibre preparation method it is characterised in that：Described sleeve pipe is to mix
Miscellaneous silica glass tube, its refractive index is equal to less than the refractive index of silica glass.
6. online collapsing wire drawing as claimed in claim 1 gain fibre preparation method it is characterised in that
The step of described preparation non-circular shape sleeve pipe includes：
Individually the outer wall of circular glass pipe is carried out mechanical grinding becomes non-circular shape sleeve pipe；
Wherein, described non-circular shape sleeve pipe includes octagon or regular hexagon or square or rectangle or " D "
Shape.
7. online collapsing wire drawing as claimed in claim 1 gain fibre preparation method it is characterised in that：Described optical fiber prefabricating
Rod mandrel is placed in soak time in described HF solution and is more than or equal to 200min.
8. the gain fibre preparation method of the online collapsing wire drawing as described in any one of claim 1～7 is it is characterised in that institute
State and prepare optical fiber prefabricated rod mandrel and include：
With the plug of MCVD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other；
With the plug of OVD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other；
With the plug of VAD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other；
With the plug of PCVD method preparation, it is co-doped with material in the rare earth doped material of fibre core and other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765314.XA CN106396360B (en) | 2016-08-30 | 2016-08-30 | A kind of gain fibre preparation method of online collapsing wire drawing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610765314.XA CN106396360B (en) | 2016-08-30 | 2016-08-30 | A kind of gain fibre preparation method of online collapsing wire drawing |
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| Publication Number | Publication Date |
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| CN106396360A true CN106396360A (en) | 2017-02-15 |
| CN106396360B CN106396360B (en) | 2019-01-25 |
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| CN201610765314.XA Active CN106396360B (en) | 2016-08-30 | 2016-08-30 | A kind of gain fibre preparation method of online collapsing wire drawing |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732335A (en) * | 2020-05-25 | 2020-10-02 | 华能(泰安)光电科技有限公司 | Method for restoring concentricity of optical fiber preform |
| CN117673874A (en) * | 2024-01-31 | 2024-03-08 | 中国航天三江集团有限公司 | High-power fiber laser and application method thereof |
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|---|---|---|---|---|
| CN101255006A (en) * | 2008-04-10 | 2008-09-03 | 中天科技光纤有限公司 | Production method of high-bandwidth multi-mode fiber |
| WO2010148662A1 (en) * | 2009-06-23 | 2010-12-29 | 长飞光纤光缆有限公司 | Optical fiber preform and manufacturing method thereof |
| CN104291676A (en) * | 2014-08-25 | 2015-01-21 | 长飞光纤光缆股份有限公司 | Method for producing large-size bending insensitive multi-mode optical fiber preforms |
| CN104932054A (en) * | 2015-07-20 | 2015-09-23 | 富通集团有限公司 | Three-wrapping-layer thulium-doped optical fiber and preparation method thereof |
-
2016
- 2016-08-30 CN CN201610765314.XA patent/CN106396360B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101255006A (en) * | 2008-04-10 | 2008-09-03 | 中天科技光纤有限公司 | Production method of high-bandwidth multi-mode fiber |
| WO2010148662A1 (en) * | 2009-06-23 | 2010-12-29 | 长飞光纤光缆有限公司 | Optical fiber preform and manufacturing method thereof |
| CN104291676A (en) * | 2014-08-25 | 2015-01-21 | 长飞光纤光缆股份有限公司 | Method for producing large-size bending insensitive multi-mode optical fiber preforms |
| CN104932054A (en) * | 2015-07-20 | 2015-09-23 | 富通集团有限公司 | Three-wrapping-layer thulium-doped optical fiber and preparation method thereof |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732335A (en) * | 2020-05-25 | 2020-10-02 | 华能(泰安)光电科技有限公司 | Method for restoring concentricity of optical fiber preform |
| CN117673874A (en) * | 2024-01-31 | 2024-03-08 | 中国航天三江集团有限公司 | High-power fiber laser and application method thereof |
| CN117673874B (en) * | 2024-01-31 | 2024-05-14 | 中国航天三江集团有限公司 | High-power fiber laser and application method thereof |
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| CN106396360B (en) | 2019-01-25 |
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