CN1238286C - Method for producing polarization maintaining optical fibre - Google Patents
Method for producing polarization maintaining optical fibre Download PDFInfo
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- CN1238286C CN1238286C CNB2004100126716A CN200410012671A CN1238286C CN 1238286 C CN1238286 C CN 1238286C CN B2004100126716 A CNB2004100126716 A CN B2004100126716A CN 200410012671 A CN200410012671 A CN 200410012671A CN 1238286 C CN1238286 C CN 1238286C
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- 230000010287 polarization Effects 0.000 title claims abstract description 70
- 239000013307 optical fiber Substances 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 claims abstract description 39
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 37
- 238000000151 deposition Methods 0.000 claims abstract description 8
- 230000003287 optical effect Effects 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims abstract description 5
- 239000000835 fiber Substances 0.000 claims description 40
- 238000012545 processing Methods 0.000 claims description 16
- 238000000227 grinding Methods 0.000 claims description 11
- 230000008021 deposition Effects 0.000 claims description 5
- 238000005491 wire drawing Methods 0.000 claims description 5
- 238000005229 chemical vapour deposition Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 claims description 4
- 238000004062 sedimentation Methods 0.000 claims description 4
- 238000005498 polishing Methods 0.000 claims description 3
- 238000003780 insertion Methods 0.000 claims description 2
- 230000037431 insertion Effects 0.000 claims description 2
- 208000025174 PANDAS Diseases 0.000 abstract description 15
- 208000021155 Paediatric autoimmune neuropsychiatric disorders associated with streptococcal infection Diseases 0.000 abstract description 15
- 235000016496 Panda oleosa Nutrition 0.000 abstract description 15
- 238000005253 cladding Methods 0.000 abstract description 8
- 238000003754 machining Methods 0.000 abstract description 6
- 238000010923 batch production Methods 0.000 abstract description 2
- 240000000220 Panda oleosa Species 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 240000004718 Panda Species 0.000 description 14
- 235000012239 silicon dioxide Nutrition 0.000 description 11
- 238000004891 communication Methods 0.000 description 4
- 238000005553 drilling Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- 238000004080 punching Methods 0.000 description 3
- 239000010453 quartz Substances 0.000 description 3
- 206010052849 Oblique presentation Diseases 0.000 description 2
- 230000008033 biological extinction Effects 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 230000008878 coupling Effects 0.000 description 2
- 238000010168 coupling process Methods 0.000 description 2
- 238000005859 coupling reaction Methods 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 238000007514 turning Methods 0.000 description 2
- 241000024287 Areas Species 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
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- 230000007812 deficiency Effects 0.000 description 1
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- 239000012535 impurity Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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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
- C03B37/01217—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 for making preforms of polarisation-maintaining optical fibres
-
- 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
- C03B37/01231—Removal of preform material to form a longitudinal hole, e.g. by drilling
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B2203/00—Fibre product details, e.g. structure, shape
- C03B2203/30—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres
- C03B2203/31—Polarisation maintaining [PM], i.e. birefringent products, e.g. with elliptical core, by use of stress rods, "PANDA" type fibres by use of stress-imparting rods, e.g. by insertion
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- 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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- 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)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
- Manufacture, Treatment Of Glass Fibers (AREA)
Abstract
The present invention relates to a method for producing a polarization maintaining optical fibre. The method is characterized in that a core rod and a stress rod are deposited and manufactured by a deposition method; claddings are both retained on the core rod and the stress rod in advance, and the corresponding side faces which are matched and connected with the core rod and the stress rod are respectively machined so that the corresponding side faces which are matched and connected with the core rod and the stress rod are attached; spacing between the core rod and the stress rod achieves the design requirement; a pure quartz glass casing tube is taken, and an inner hole of the pure quartz glass casing tube is machined so that the cross section of the inner hole of the pure quartz glass casing tube after machined is matched with the cross section which is combined by the core rod and the stress rod; the machined core rod and the stress rod are arranged in the inner hole of the pure quartz glass casing tube so that the periphery faces of the core rod and the stress rod is tightly combined with the inner hole of the pure quartz glass casing tube to form a polarization maintaining optical fibre preformed rod; finally, the polarization maintaining optical fibre preformed rod is pulled into a cone, cleaned, and pulled into an optical fibre by a convention machining method. The production method has the advantages of high precision and finished product rate and strong machining adaptability, and is suitable for batch production. The production efficiency and the product performance of a panda type polarization maintaining optical fibre can be effectively enhanced, and the present invention can be used for producing the polarization maintaining optical fibres in other types.
Description
Technical field
The present invention relates to a kind of manufacture method of polarization maintaining optical fibre.Be particularly related to a kind of method of making panda type polarization-preserving fiber.Use this manufacture method and can make polarization maintaining optical fibre and the single-mode single-polarization cable that works in various wavelength.
Background technology
Polarization maintaining optical fibre is a class of special optical fiber.Polarization maintaining optical fibre, promptly polarization-maintaining fiber is the type optical fiber with the linear polarization that keeps institute's transmission ray.Polarization maintaining optical fibre can be applicable to many fields, as multiplexing coherent communication, and fibre optic gyroscope, fibre optic hydrophone, polarization sensing etc.Polarization maintaining optical fibre is a kind of special optical fiber type that widespread use is worth that has.
In common communications optical fiber, because its circular symmetry structure, incident linear polarization light is through after the transmission of certain distance, because the coupling of different polarization pattern, energy exchange can become ellipse or circularly polarized light and can't the retention wire polarization state.And when a line polarized light was coupled into polarization maintaining optical fibre, if the polarization principal axis of the polarization direction of line polarized light and polarization maintaining optical fibre overlaps, then line polarized light can keep its linear polarization until leaving polarization maintaining optical fibre in transmission course.The reason that causes the fiber birefringence phenomenon is a lot, and the ununiformity of various geometry and stress all can be introduced double refraction.The polarization maintaining optical fibre product also comprises how much double refractions and stress birefringence polarization maintaining optical fibre.How much birefringent examples are oval fuse polarization maintaining optical fibres, and the fibre core of this polarization maintaining optical fibre is oval-shaped, utilize the asymmetry of this geometry to produce birefringence effect.The polarization maintaining optical fibre of stress birefringence mainly contains butterfly junction type polarization maintaining optical fibre, three kinds of panda type polarization-preserving fiber and oval cladding type polarization maintaining optical fibres.The characteristics of this type optical fiber are to introduce the stressed zone extruding fibre core with high expansion coefficient to produce birefringence effect in the covering of optical fiber.A special case of polarization maintaining optical fibre is a single-mode single-polarization cable.
In the above-mentioned all kinds of polarization maintaining optical fibre, oval fuse polarization maintaining optical fibre is because its fuse be oval, with the coupling of other optical fiber on the bigger problem of existence, can cause bigger welding attenuation.Butterfly junction type polarization maintaining optical fibre and oval cladding type polarization maintaining optical fibre mostly adopt modified chemical vapor deposition process (MCVD) (MCVD) manufacturing at present, because this type optical fiber generally comprises surrounding layer, stressor layers, inner cladding and sandwich layer, and all structures primary depositing all, moltenly simultaneously shorten shape into.The shape that needs the proof stress district in the manufacturing processed, keep simultaneously inner cladding and fibre core circularity and concentricity, so complicate fabrication process, yield rate is lower.
Panda type polarization-preserving fiber has leading status on market, this and panda type polarization-preserving fiber have double refraction efficient height, and be simple in structure, makes the efficient height, and the manufacture method flexible characteristic is relevant.The manufacturing process of panda type polarization-preserving fiber is generally combined method.Promptly at first deposition is made plug, stress rods; Outsourcing obtains comprising the preform of plug to plug then; Plug zygomorphy position is got two holes and stress rods is inserted in the hole and forms the combination rod on prefabricated rods then.Use the excellent wire drawing of combination promptly to obtain panda type polarization-preserving fiber.There is following shortcoming in this method to prefabricated rods punching manufacturing panda type polarization-preserving fiber.At first, because the punching prefabricated rods comprises plug, have certain unrelieved stress on core bag interface, this unrelieved stress very easily causes the large preform rod of processing to break in the punching process, and the success ratio of processing is lower.The second, for polarization maintaining optical fibre, the position of stressed zone is extremely important.For drilling technology, owing to need get two isolating circular holes, must move or turning of work piece, this moving process can bring the location consistency problem, reduces the symmetry in hole, reduces the performance of polarization maintaining optical fibre at last.The 3rd, bad adaptability.Use drilling technology, can only get two circular holes basically, and the position in hole must leave the certain position of sandwich layer, otherwise cause workpiece to break easily.The 4th, the following process difficulty.Because the combination rod of drilling technology comprises three independently prefabricated rods, and the combination rod is outer through bigger, (optical fiber need be pulled out a taper shape in the prefabricated rods end to the awl that draws of this prefabricated rods before wire drawing, can wire drawing), it is all quite difficult to connect the prolongation rod, and entrained air bubbles in drawing process easily, defectives such as gas line are destroyed the performance of polarization maintaining optical fibre.
Summary of the invention
Technical problem to be solved by this invention be the deficiency that exists at above-mentioned prior art and a kind of processing performance and good product quality are provided, manufacturing accuracy is high with the yield rate height, flexibility of operation is strong and the polarization maintaining optical fibre manufacture method that is suitable for producing in batches.This manufacture method can improve the manufacturing efficient and the product performance of panda type polarization-preserving fiber effectively, also can be used to make simultaneously the polarization maintaining optical fibre of other type.
The present invention is as follows for the technical scheme that problem adopted of the above-mentioned proposition of solution:
Make plug and stress rods with the sedimentation deposition, all be reserved with covering on plug and the stress rods,
Plug and the matched corresponding side surface of stress rods are carried out mechanical workout respectively, and the corresponding side surface that they are connected fits, and the spacing of plug and stress rods reaches design requirements, and the lateral cross section of plug and stress rods is uniform cross section,
Get pure quartz glass sleeve, its endoporus is carried out mechanical workout, the cross section that pure quartz glass sleeve inner hole section after the mechanical workout and plug and stress rods are made up matches,
The plug and the stress rods of having processed are inserted pure quartz glass sleeve endoporus, the periphery of plug and stress rods and pure quartz glass sleeve endoporus are combined closely, constitute polarization-preserving fiber preform,
Use conventional working method at last, polarization-preserving fiber preform is drawn awl, clean, it is fine that wire drawing becomes.
Press such scheme, before polarization-preserving fiber preform draws awl, can melt the processing of contracting to polarization-preserving fiber preform, the polarization-preserving fiber preform that will melt again after contracting carries out stretch processing.
Press such scheme, described sedimentation is plasma chemical vapor deposition (PCVD), also can use chemical Vapor deposition process (MCVD), outside vapour deposition process (OVD) and axial deposition methods such as (VAD).
Press such scheme, described mechanical workout comprises cutting, cutting and grinding, after plug, stress rods and pure quartz glass sleeve grinding grinding surface can be polished and grind.Also can carry out corrosion treatment to plug, stress rods and pure quartz glass sleeve.
Press such scheme, the pure quartz glass sleeve inner hole section after the processing can be oval shape, or the side by side continuous shape of three circles, or cross oval shape, or rectangle, makes up the cross section that connects with plug and stress rods and matches.
The method that the present invention uses internal surface of sleeve pipe mechanical workout to be shaped is made panda type polarization-preserving fiber, has following advantage:
The first, machining stress is little, the reliability height.The present invention uses mechanically shape to process the sleeve portion of pure quartz.Because sleeve pipe is pure quartz construction, unrelieved stress is minimum, is fit to use mechanical means to shape.Mechanical workout can reach and meet design requirement fully, processes the cover pipe orifice shape of structural integrity.
The second, the working accuracy height by the precision of machining tool, makes the geometrical shape of plug, stress rods and the processing of pure quartz glass sleeve and precision control good, thereby improves the performance of polarization maintaining optical fibre.Mechanical workout is compared to geometrical shape and the size that one of direct sedimentary advantage of prefabricated rods is accurately to control processing work.Generally speaking, glass stretches and melts precision that compression process can control in the millimeter magnitude, and therefore plug and sleeve pipe all have the ununiformity of millimeter magnitude to exist.And the precision of mechanical workout can reach 0.03 millimeter magnitude.Therefore use the accurately geometrical shape of feed glass sleeve pipe, plug and stress rods of machining process, flexible stressed zone size, and the distance of stressed zone and fibre core meets the polarization maintaining optical fibre of design performance with manufacturing.Use processing method of the present invention, geometric accuracy can be controlled at below the 0.05mm, simultaneously owing to be pure quartz socket tube inner wall forming, can once-forming, guarantee the precision of mechanical workout.Be compared to that the prefabricated rods drilling method need move or the process of turning of work piece, can improve one to two order of magnitude of working accuracy.Therefore product processing quality is good.
The 3rd, pure quartz glass sleeve adopts a hole forming mode, make the process industrial art performance of glass bushing obtain good improvement, so that the enforcement of mechanical workout and to the control of shape, precision, not only help making the polarization maintaining optical fibre of different structure feature, and improved the yield rate of polarization maintaining optical fibre processing greatly, be convenient to the batch process of polarization maintaining optical fibre.
The 4th, can satisfy the manufacturing processed of polarization maintaining optical fibre and single polarization fiber simultaneously.By changing the size and the relative position of stressed zone, the present invention can make single polarization fiber equally.The present invention also can be used for the butterfly junction type, oval cladding type, the cross manufacturing that waits polarization maintaining optical fibre.
The 5th, the application combination rod melts and contracts, drawing process melts the polarization-preserving fiber preform that makes up and shortens the complete polarization-preserving fiber preform of a root architecture into, can optimize geometrical shape, structure and the uniform properties of prefabricated rods like this, make how much of panda type polarization-preserving fiber, intensity and optical property all obtain very big improvement, significantly improve optical fiber properties and simplify the subsequent technique that optical fiber is made, facilitate drawing process optimization, improve the manufacturing efficient of polarization maintaining optical fibre effectively.In addition, by the manufacturing process of strictness execution optical fiber, by polishing, corrosion is cleaned, and can eliminate the tiny crack and the impurity of machining surface, the factor of the optical fiber property of eliminating the effects of the act.Use the present invention can produce double refraction efficient height, even structure, physical strength is good, the high quality panda type polarization-preserving fiber of length.This polarization maintaining optical fibre product can satisfy the demand of various Application Areass.
Description of drawings
Fig. 1 is the three-dimensional structure diagram of panda type polarization-preserving fiber.
Fig. 2 is oval shape internal sheath of the present invention and plug, stress rods combined radial sectional view.
Fig. 3 is rectangle internal sheath of the present invention and plug, stress rods combined radial sectional view.
Fig. 4 is cross oval shape internal sheath of the present invention and plug, stress rods combined radial sectional view.
Fig. 5 is the present invention's three round shape internal sheath and plug, stress rods combined radial sectional views of linking to each other side by side.
Fig. 6 is stress rods processing synoptic diagram of the present invention.
Fig. 7 is plug processing synoptic diagram of the present invention.
Embodiment
Further specify embodiments of the invention below in conjunction with accompanying drawing.
Embodiment 1:
Use PCVD method deposition plug 6 and stress rods 5, wherein plug 6 comprises the core segment 10 and the clad section 9 of high refractive index, and as shown in Figure 7, fibre core 10 is to mix germanite English, has higher light refractive index, and covering 9 is pure silica glass.The structure of stress rods 5 comprises stressed zone 8 and covering 7, and as shown in Figure 6, wherein stressed zone 8 is boron-doping silica glasss, has lower light refractive index and bigger thermal expansivity, and covering 7 is pure silica glass.Pure quartz glass sleeve 4 (see figure 2)s of mechanical workout.Sleeve pipe 4 is the pure silica glass right cylinder of circular inner hole, obtains oval shape endoporus by grinding inner hole wall, the endoporus hole wall is polished again.Simultaneously with plug 6 and stress rods 5 by being machined into suitable shape (seeing Fig. 6,7), promptly square-section plug and side direction are planar large semicircle section stress rod.Plug 6 comprises complete core segment 10 and part covering 9, and stress rods 5 comprises stressed zone 8 and part covering 7.All mechanical workout parts must grinding and polishing.With plug and two pure quartz glass sleeve endoporus that the combined insertion of stress rods has shaped, stress rods is positioned at the both sides of plug then.Shorten an inclined to one side prefabricated rods of complete guarantor into combination rod high temperature on the stretching tower is molten.Prefabricated rods comprises high refractive index core segment 3, pure silica cladding 1, low-refraction stressed zone 2.Can become less outer with protecting inclined to one side preform bar stretching as required through prefabricated rods.To protect inclined to one side prefabricated rods and draw awl, and go up wire-drawer-tower after the clean and be drawn into polarization maintaining optical fibre with panda type structure.The polarization maintaining optical fibre that uses present method to make passes through to optimize the doping content of fibre core and stressed zone, and the distance by control fibre core and stressed zone can obtain clapping at operation wavelength 1310nm place and grow less than 10mm, and 2 meters extinction ratios are greater than the high quality polarization maintaining optical fibre of 20dB/km.Other parameters of polarization maintaining optical fibre meet relevant standard specifications of protecting the oblique presentation product fully.The polarization maintaining optical fibre of manufacturing is functional, can satisfy the requirement that communication and device are made.
Embodiment 2:
Use PCVD method deposition plug 6 and stress rods 5, wherein plug 6 comprises the core segment 10 and the clad section 9 of high refractive index, and fibre core 10 is to mix germanite English, has higher light refractive index, and covering 9 is pure silica glass.The structure of stress rods 5 comprises stressed zone 8 and covering 7, and wherein stressed zone 8 is boron-doping silica glasss, has lower light refractive index and bigger thermal expansivity, and covering 7 is pure silica glass.Mechanical workout sleeve pipe 4.Sleeve pipe 4 is the pure silica glass right cylinder of tool circular inner hole.Obtain the side by side continuous shape inner hole section (see figure 5) of three circles by grinding inner hole wall.Inner hole wall is polished.Corrode plug and stress rods simultaneously to suitable external diameter.Then plug and stress rods are inserted the sleeve pipe that has shaped, stress rods is positioned at the both sides of plug.Shorten an inclined to one side prefabricated rods of complete guarantor into combination rod high temperature on the stretching tower is molten.Prefabricated rods comprises high refractive index core segment 3, pure silica cladding 1, low-refraction stressed zone 2.Can become less outer with protecting inclined to one side preform bar stretching as required through prefabricated rods.To protect inclined to one side prefabricated rods and draw awl, and go up wire-drawer-tower after the clean and be drawn into polarization maintaining optical fibre with panda type structure.The polarization maintaining optical fibre that uses present method to make passes through to optimize the doping content of fibre core and stressed zone, and the distance by control fibre core and stressed zone can obtain clapping at operation wavelength 1310nm place and grow less than 10mm, and 2 meters extinction ratios are greater than the high quality polarization maintaining optical fibre of 20dB/km.Other parameters of polarization maintaining optical fibre meet relevant standard specifications of protecting the oblique presentation product fully.The polarization maintaining optical fibre of manufacturing is functional, can satisfy the requirement that communication and device are made fully.
Claims (8)
1, a kind of manufacture method of polarization maintaining optical fibre is characterized in that:
Make plug and stress rods with the sedimentation deposition, all be reserved with covering on plug and the stress rods,
Plug and the matched corresponding side surface of stress rods are carried out mechanical workout respectively, and the corresponding side surface that they are connected fits, and the spacing of plug and stress rods reaches design requirements, and the lateral cross section of plug and stress rods is uniform cross section,
Get pure quartz glass sleeve, its endoporus is carried out mechanical workout, the cross section that pure quartz glass sleeve inner hole section after the mechanical workout and plug and stress rods are made up matches,
The plug and the stress rods of having processed are inserted pure quartz glass sleeve endoporus, the periphery of plug and stress rods and pure quartz glass sleeve endoporus are combined closely, constitute polarization-preserving fiber preform,
Use conventional working method at last, polarization-preserving fiber preform is drawn awl, clean, it is fine that wire drawing becomes.
2, by the manufacture method of the described polarization maintaining optical fibre of claim 1, it is characterized in that:
Before polarization-preserving fiber preform draws awl, polarization-preserving fiber preform is melted the processing of contracting.
3, by the manufacture method of the described polarization maintaining optical fibre of claim 2, it is characterized in that:
The polarization-preserving fiber preform that will melt again after contracting after the molten processing of contracting carries out stretch processing.
4, by the manufacture method of claim 1 or 2 described polarization maintaining optical fibres, it is characterized in that:
Described sedimentation is a plasma chemical vapor deposition.
5, by the manufacture method of claim 1 or 2 described polarization maintaining optical fibres, it is characterized in that:
Described mechanical workout comprises cutting, cutting and grinding.
6, by the manufacture method of the described polarization maintaining optical fibre of claim 5, it is characterized in that:
After plug, stress rods and pure quartz glass sleeve grinding, grinding surface is polished and grinds.
7, by the manufacture method of claim 1 or 2 described polarization maintaining optical fibres, it is characterized in that:
Pure quartz glass sleeve inner hole section after the processing is an oval shape, or the side by side continuous shape of three circles, or cross oval shape, or rectangle, makes up the cross section that connects with plug and stress rods and matches.
8, by the manufacture method of the described polarization maintaining optical fibre of claim 2, it is characterized in that:
Pure quartz glass sleeve is the right cylinder of tool circle or oval endoporus, obtain oval shape endoporus by grinding inner hole wall, again the endoporus hole wall is polished, simultaneously with plug with stress rods is processed into the square-section plug and side direction is a planar large semicircle section stress rod, plug comprises complete core segment and part covering, stress rods comprises complete stressed zone and part covering, the necessary grinding and polishing of all mechanical workout parts, then with plug and two pure quartz glass sleeve endoporus that the combined insertion of stress rods has shaped, stress rods is positioned at the both sides of plug, combination rod high temperature on the stretching tower is melted shorten an inclined to one side prefabricated rods of complete guarantor into.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100126716A CN1238286C (en) | 2004-01-16 | 2004-01-16 | Method for producing polarization maintaining optical fibre |
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| CNB2004100126716A CN1238286C (en) | 2004-01-16 | 2004-01-16 | Method for producing polarization maintaining optical fibre |
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| CN1557754A CN1557754A (en) | 2004-12-29 |
| CN1238286C true CN1238286C (en) | 2006-01-25 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101391861B (en) * | 2008-10-28 | 2012-02-08 | 长飞光纤光缆有限公司 | Large size combined optical fibre perform of polarization maintaining fiber and production method thereof |
| CN102096145B (en) * | 2010-12-31 | 2012-11-07 | 北京交通大学 | Multi-core polarization maintaining fiber and manufacturing method thereof |
| CN103253860B (en) * | 2012-11-15 | 2016-05-18 | 北京一轻研究院 | The manufacture method of a kind of oval stressed zone type polarization maintaining optical fibre |
| CN105866880B (en) * | 2016-06-14 | 2018-12-28 | 烽火通信科技股份有限公司 | A kind of preparation method of polarization maintaining optical fibre |
| JP7516349B2 (en) * | 2019-03-27 | 2024-07-16 | 古河電気工業株式会社 | Method for manufacturing multi-core fiber preform, multi-core fiber preform, and multi-core fiber |
| CN110746109A (en) * | 2019-09-25 | 2020-02-04 | 无锡法尔胜光电科技有限公司 | Preparation method of polarization maintaining optical fiber |
| CN110845133B (en) * | 2019-12-10 | 2021-10-01 | 中国电子科技集团公司第四十六研究所 | Method for preparing boron-doped stress rod with gradient isolation layer |
| CN111099820B (en) * | 2019-12-30 | 2022-07-05 | 武汉安扬激光技术股份有限公司 | Preparation method of fine stress bar |
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| CN1557754A (en) | 2004-12-29 |
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