CN105541105A - Preparation method and device of high-double-refraction rotary optical fiber - Google Patents
Preparation method and device of high-double-refraction rotary optical fiber Download PDFInfo
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- CN105541105A CN105541105A CN201610092893.6A CN201610092893A CN105541105A CN 105541105 A CN105541105 A CN 105541105A CN 201610092893 A CN201610092893 A CN 201610092893A CN 105541105 A CN105541105 A CN 105541105A
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- preparation
- high birefringence
- fiber
- optical fiber
- flying trident
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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
- C03B37/02—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
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
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- Organic Chemistry (AREA)
- Surface Treatment Of Glass Fibres Or Filaments (AREA)
Abstract
The invention discloses a preparation method and device of a high-double-refraction rotary optical fiber. The method adopts the rotating and filament collecting integrated comprehensive control, and is characterized in that a prefabricated bar (2) is sent to a filament pulling furnace (3) through a bar sending device (1) to be heated into a molten state, the traction of the optical fiber is achieved through the rotating speed difference of a flying fork (13) and a filament collecting drum (14), the optical fiber can be twisted to be transmitted to a melting area from bottom to top when the flying fork (13) rotates, and then rotation is achieved in the optical fiber so that the rotary optical fiber producing aim can be achieved. The invention further discloses the device for the rotating and filament collecting integrated comprehensive control. The device is characterized by comprising a flying fork rotating module, a filament collecting drum rotating module and a filament arranging module which are integrated on the same machine frame mechanism (20). The device is small in structure, high in integrity, capable of being conveniently installed on and detached from a filament pulling tower, high in rotating speed and suitable for high-double-refraction rotary optical fibers and other optical fibers with the requirement for single-direction rotation and high requirements for rotating speed.
Description
Technical field
The present invention relates to a kind of preparation method and equipment of high birefringence spin fiber, is a kind of preparation technology rotating class special optical fiber.
Background technology
In recent years, all-fiber current transformator is large with its dynamicrange, bandwidth, flexible for installation, anti-electromagnetic interference capability strong, can the advantage such as test cross direct current signal, become the development trend of novel current transformer.All-fiber current transformator is ultimate principle with Faraday effect, take sensing fiber ring as sensor.First require that in sensing fiber ring, light can keep circular polarization state to propagate, the left circularly polarized light propagated in fiber optic loop like this and right-circularly polarized light can change the Faraday effect caused by sensory current, and therefore produce certain phase differential; Simultaneously because the linear birefringence in sensing fiber ring can upset the Faraday rotation in the light polarization face that electric current causes, therefore, require that optical fiber all will have very strong rejection ability for therein residuary linear birefringence and the linear birefringence introduced because of external disturbance.
High birefringence spin fiber is a kind of special sensor fibre, and structurally, with stress symmetric district in its covering, and its stressed zone is along fiber axis to helically structure distribution.The rotation of stressed zone makes a linear birefrigence part for former optical fiber be converted into circular birefringence, and another part shows as residuary linear birefringence, and when comparatively residuary linear birefringence is dominant in the circular birefringence introduced, high birefringence spin fiber can realize the maintenance of circular polarization state.Meanwhile, because the circular birefringence of residuary linear birefringence and introducing is all very high, the sensing fiber ring be made up of this optical fiber is made to have very strong anti-external disturbance ability.Therefore, high birefringence spin fiber meets the application demand of all-fiber current transformator completely.
High birefringence spin fiber is that one direction at the uniform velocity rotates, and in order to ensure polarization property, pitch requires at below 5mm.Optical fiber pitch affects by speed of rotation and drawing speed, and for ensureing degree of cure and efficient attenuation, drawing speed requires more than 15m/min, and therefore the speed of rotation of optical fiber requires at least 3000r/min.
The preparation method of spin fiber proposes in some patents, publication number be 1663922 Chinese patent " during drawing the optical fiber producing apparatus of spin fiber pre-shaped and method ", publication number be the concrete grammar of the Chinese patent " manufacture method of twisted fiber " of 103359929A be in drawing process, rotate prefabricated rods realize rotation, this method is limited to the heaviness of device and the concentricity of prefabricated rods rotation, rotating speed, generally at below 1000r/min, is unsuitable for the preparation of high birefringence spin fiber.Publication number be 1472153 Chinese patent " manufacture method of low polarisation mode dispersion single-mode fiber and the optical fiber prepared by the method " propose rubbing optical fiber in drawing process and realize rotating, this method is applicable to the optical fiber needing Periodic Rotating, as low polarization mode dispersion optical fiber, but be not suitable for the optical fiber that requirement single direction at the uniform velocity rotates.
Therefore, need a kind of can high speed rotating, the method and apparatus for the production of high birefringence spin fiber ensures the preparation of the type optical fiber, and plays directive function for producing other rotation type optical fibers with similar structures.
Summary of the invention
The invention discloses a kind of preparation method and equipment of high birefringence spin fiber, adopt the method rotating and receive silk integrated synthesis and control, particularly will solve in high birefringence spin fiber preparation process cannot the problem of high speed rotating wire drawing.
The technical solution adopted in the present invention is:
1, by receiving the cooperation that silk rouses and flying trident rotates between the two, forming certain speed discrepancy, reaching the object of traction and receipts silk;
2, the rotation of flying trident is passed to melt region as medium by optical fiber, forms the object rotated to reach at inside of optical fibre;
3, design reduces quality and the rotation radius of flying trident, fine adjustment flying trident counterweight in practical application as far as possible, keep the transient equilibrium in rotating, reach the object making flying trident high speed rotating.
Compared with prior art, the invention has the beneficial effects as follows:
1, the equipment that the present invention proposes is modular designs, and integrated level is high, and convenient installation and removal on wire-drawer-tower, are convenient to realize a tower multiplex;
2, the present invention propose equipment in flying trident speed of rotation reach as high as 6000r/min, far above prior art;
3, receive silk drum in the equipment that the present invention proposes can vertically install, always its benefit is in vertical state from rotation origination point to prefabricated rods melt region optical fiber, can not affect the transmission of rotation.
Accompanying drawing explanation
Fig. 1 is high birefringence spin fiber preparation method schematic diagram;
Rod feeder-1 in figure, prefabricated rods-2, fiber drawing furnace-3, string diameter instrument A-4, coating cup-5, solidification equipment-6, string diameter instrument B-7, optical fiber-8, rotates and receives silk device-9
Fig. 2 receives silk device schematic diagram for rotating;
Flying trident transmission mechanism-10 in figure, flying trident motor-11, guide deflection sheave-12, flying trident-13, receives silk drum-14, receives silk drum motor-15, receives silk drum transmission mechanism-16, slide unit motor-17, speed reduction unit-18, accurate slide unit-19, rack construction-20.
Embodiment
Below in conjunction with accompanying drawing, the present invention is further described.
High birefringence spin fiber preparation method as shown in Figure 1, concrete grammar is clipped on rod feeder (1) by prefabricated rods (2), prefabricated rods is delivered to the position, hot-zone in fiber drawing furnace (3), when prefabricated rods is heated to molten state, optical fiber (8) is each passed through string diameter instrument A(4), coating cup (5), solidification equipment (6), string diameter instrument B(7) enter rotate receive silk device (9), the trend of optical fiber (8) as shown in the figure, first through guide deflection sheave (12a), again from the side respectively through three guide deflection sheaves in " S " type, be finally fixed on and receive on silk drum; Successively start and receive silk drum (14) and flying trident (13), the traction of optical fiber is formed by the speed discrepancy of flying trident (13) and receipts silk drum (14), and the rotation of flying trident (13) can cause the torsion of optical fiber, torsion can be delivered to melt region from the bottom to top, and then forms the object rotated to reach production spin fiber at inside of optical fibre.
Rotate and receive silk device as shown in Figure 2, this device comprises flying trident rotary module, receives silk drum rotary module, arranges silk module three part.Flying trident rotary module comprises: flying trident (13), flying trident transmission mechanism (10), flying trident motor (11), guide deflection sheave (12); Receive silk drum rotary module to comprise: receive silk drum (14), receive silk drum transmission mechanism (16), receive silk drum motor (15); Row's silk module comprises: slide unit motor (17), speed reduction unit (18), accurate slide unit (19).Whole device is integrated in same rack construction (20), and compact structure, integrated level be high, be convenient to installation and removal on wire-drawer-tower, and speed of rotation can reach 6000r/min the soonest, meets the production requirement of high birefringence spin fiber.
Claims (13)
1. the preparation method of a high birefringence spin fiber, it is characterized in that prefabricated rods is delivered in fiber drawing furnace by rod feeder and be heated to molten state, the traction of optical fiber is formed by the speed discrepancy of flying trident and receipts silk drum, and the rotation of flying trident can cause the torsion of optical fiber, torsion can be delivered to melt region from the bottom to top, and then forms the object rotated to reach production spin fiber at inside of optical fibre.
2. the preparation method of a kind of high birefringence spin fiber according to claim 1, is characterized in that prefabricated rods preparation can adopt a kind of deposition method in MCVD, PCVD, OVD and VAD.
3. the preparation method of a kind of high birefringence spin fiber according to claim 1, is characterized in that the type of heating of fiber drawing furnace can heat for induction furnace, one in LASER HEATING, plasma heating.
4. the preparation method of a kind of high birefringence spin fiber according to claim 1, is characterized in that the sense of rotation of flying trident and receipts silk drum can be equidirectional or reverse direction.
5. the preparation method of a kind of high birefringence spin fiber according to claim 1 or 4, is characterized in that the equivalent pulling speed formed by flying trident and receipts silk drum speed discrepancy is 1 ~ 100m/min.
6. the preparation method of a kind of high birefringence spin fiber according to claim 1 or 4, is characterized in that the speed of rotation of flying trident is 1 ~ 6000r/min.
7. the preparation method of a kind of high birefringence spin fiber according to claim 1 or 4, is characterized in that the single direction that rotates to be of optical fiber at the uniform velocity rotates.
8. a Preparation equipment for high birefringence spin fiber, is characterized in that comprising flying trident rotary module, receives silk drum rotary module, arranges silk module three part.
9. the Preparation equipment of a kind of high birefringence spin fiber according to claim 8, is characterized in that, flying trident has some liners (12a, 12b etc.), for the lead of guiding fiber.
10. the Preparation equipment of a kind of high birefringence spin fiber according to claim 8, it is characterized in that, flying trident is rotated by driven by motor, and its type of drive can be the one in belt, chain, gear, worm screw turbine.
The Preparation equipment of 11. a kind of high birefringence spin fibers according to claim 8, is characterized in that, receive silk drum and rotated by driven by motor, its type of drive can be the one in belt, chain, gear, worm screw turbine.
The Preparation equipment of 12. a kind of high birefringence spin fibers according to claim 8, is characterized in that, receiving silk drum can carry out line motion, the row's of realization silk.
The Preparation equipment of 13. a kind of high birefringence spin fibers according to claim 8, is characterized in that, the installation direction of whole device can be vertical and level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092893.6A CN105541105A (en) | 2016-02-20 | 2016-02-20 | Preparation method and device of high-double-refraction rotary optical fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610092893.6A CN105541105A (en) | 2016-02-20 | 2016-02-20 | Preparation method and device of high-double-refraction rotary optical fiber |
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| CN105541105A true CN105541105A (en) | 2016-05-04 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746593A (en) * | 2016-12-08 | 2017-05-31 | 长飞光纤光缆股份有限公司 | A kind of spin fiber preparation method and equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0729919A2 (en) * | 1995-03-01 | 1996-09-04 | Sumitomo Electric Industries, Ltd. | Optical fiber and method of manufacturing the same |
| CN1684916A (en) * | 2002-09-25 | 2005-10-19 | 皮雷利＆C·有限公司 | Optical fiber having a low polarization mode dispersion and process and apparatus for producing it |
| CN102187256A (en) * | 2008-10-20 | 2011-09-14 | 住友电气工业株式会社 | Method and apparatus for producing optical fiber |
| CN103936278A (en) * | 2013-01-20 | 2014-07-23 | 西安金和光学科技有限公司 | Rotating wire-drawing apparatus and operation method thereof |
-
2016
- 2016-02-20 CN CN201610092893.6A patent/CN105541105A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0729919A2 (en) * | 1995-03-01 | 1996-09-04 | Sumitomo Electric Industries, Ltd. | Optical fiber and method of manufacturing the same |
| CN1684916A (en) * | 2002-09-25 | 2005-10-19 | 皮雷利＆C·有限公司 | Optical fiber having a low polarization mode dispersion and process and apparatus for producing it |
| CN102187256A (en) * | 2008-10-20 | 2011-09-14 | 住友电气工业株式会社 | Method and apparatus for producing optical fiber |
| CN103936278A (en) * | 2013-01-20 | 2014-07-23 | 西安金和光学科技有限公司 | Rotating wire-drawing apparatus and operation method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746593A (en) * | 2016-12-08 | 2017-05-31 | 长飞光纤光缆股份有限公司 | A kind of spin fiber preparation method and equipment |
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Application publication date: 20160504 |