CN207143117U - A kind of polarization-preserving fiber preform - Google Patents
A kind of polarization-preserving fiber preform Download PDFInfo
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- CN207143117U CN207143117U CN201721008939.8U CN201721008939U CN207143117U CN 207143117 U CN207143117 U CN 207143117U CN 201721008939 U CN201721008939 U CN 201721008939U CN 207143117 U CN207143117 U CN 207143117U
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Abstract
It the utility model is related to a kind of polarization-preserving fiber preform, prefabricated rods include wire drawing in advance into cone reducing deformation section, wire drawing designs into the top of cone reducing deformation section for perforate in advance, during wire drawing is turned around, it can discharge and be closed heated gas, the expansion bubbling of head end is prevented, realizes the wire-drawing technology technique of disymmetry diplopore.Prefabricated rods include tail pipe extension enlarging wire drawing gripping section simultaneously, by carrying out enlarging to the tail end for extending tailpipe section, variable diameter design can be carried out to the tail end for extending tail pipe, so as to realize the holding function in its drawing process and the suspension holding function during cleaning-drying, optimize the circulation disposing capacity of each operation, ensure hanging, cleaning, the operational sequences such as wire drawing clamping, the damage and pollution of wire drawing effective coverage are not caused, also need to design frosted radiating segment in the tail end close to extension tailpipe section, during wire drawing clamps, heat of high temperature in fiber drawing furnace is obstructed, prevent collet segment heat conduction from overheating, Damage Coutrol part.
Description
Technical field
A kind of polarization-preserving fiber preform is the utility model is related to, belongs to technical field of optical fiber.
Background technology
Polarization maintaining optical fibre, i.e. polarization-maintaining fiber, for transmitting linearly polarized light, it is widely used in space flight, aviation, navigation, industry
The every field of the national economy such as manufacturing technology and communication, the interferometric optical fiber sensor based on being detected by optical coherence
In, it can ensure that linear polarization is constant using polarization maintaining optical fibre, improve relevant signal to noise ratio, to realize that the high accuracy to physical quantity is surveyed
Amount；Polarization maintaining optical fibre is mainly used in the biography such as optical fiber current mutual inductor, optical fibre gyro, fibre optic hydrophone as a kind of special optical fiber
The optical fiber telecommunications system such as sensor and DWDM, EDFA, it is a kind of special optical fiber type having extensively using value.Stress birfringence
Polarization maintaining optical fibre mainly has three kinds of bow-tie type polarization maintaining optical fibre, panda type polarization-preserving fiber and oval cladding type polarization maintaining optical fibre.Wherein, panda
Type polarization maintaining optical fibre is applied the most extensive, and its structure includes fibre core, stressed zone and clad section, and its fibre core is located at the center of covering
Part, and two columned stressed zones are distributed in the both sides of fibre core, cause polarization-maintaining light so as to produce so-called stress birfringence
Fibre has linear polarization retention property.In design, adulterated mainly by the structure and stress of two symmetrical cylinder stressed zones of change
The birefringenct property of polarization maintaining optical fibre to be adjusted.
A kind of preparation method of polarization maintaining optical fibre is described in Chinese patent 201610412177.1, is noted using prefabricated mould
Enter silica liquid, obtain quartz and partly cut sleeve pipe, melted by polishing, reinject the mixing of silica and diboron trioxide
Powder combinations are into panda type polarization-preserving fiber prefabricated rods；The specific design structure snd size parameter of prefabricated rods is not retouched in detail
State, the moulding prefabricated rod for being directly available for wire drawing is not provided yet.A kind of panda is described in Chinese patent 201610457293.5
The preparation method of polarization-preserving fiber preform, it is added to rare earth using nanoporous silica powder and is co-doped with cationic inorganic salting liquid
Middle formation suspension, specific moulding prefabricated rod parameter is not provided and is available for wire drawing prefabricated rods.In Chinese patent
A kind of oval core panda protecting polarized light fiber and preparation method thereof is described in 201610599525.0, using flat polishing stretching to pre-
Rod processed is molded, and the structure design to prefabricated rods radial direction and parameter designing do not carry out detail specification, the design of this part yet
There is the influence of key to follow-up fibre-optical drawing.A kind of polarization-maintaining light is described in Chinese patent 201310658276.4
The manufacture device and manufacture method of fine prefabricated rods, assembling fixation is carried out to prefabricated component using design device, equally using outer spray
Method prepares panda protecting polarized light fiber prefabricated rods, and the design and preparation of prefabricated rods are not carried out by the way of prefabricated punching.In
A kind of manufacture method of polarization maintaining optical fibre is described in state's patent 201510017430.9, but only to the structure of bow-tie type polarization maintaining optical fibre
Design is described, while employs not rounded package assembly and carry out assembly, there is bigger gap.In Chinese patent
A kind of manufacture method of polarization maintaining optical fibre is described in 200410012671.6, it is pre- mainly to describe a kind of panda type polarization-preserving fiber
The assembling method of rod processed, employ square core design, the stress structure that is relatively hard to keep on circular and square composition surface design；Simultaneously
Also without description prefabricated rods detailed construction design parameter.A kind of polarization maintaining optical fibre is described in Chinese patent 200810197409.1
Manufacture method, the cylindrical finishing to panda type polarization-preserving fiber punching prefabricated rods is mainly described so that stress rods and hole
Gap, it can be compensated by cylindrical finishing, so as to ensure the non-circularity of cladding of polarization maintaining optical fibre, while ensure mechanical strength
Deterioration is not received；Wire drawing extension not to prefabricated rods draws the technique of cone section to be described, and fails to propose solve from technological design
The method of fiber cladding noncircularity optimization, adds manufacturing process, improves quality control risk.
Utility model content
The purpose of this utility model is to overcome above-mentioned deficiency, there is provided a kind of polarization-preserving fiber preform, on the one hand can expire
The design requirement of the structural behaviour of sufficient panda type polarization-preserving fiber, on the other hand carried out in detail for specific fibre-optical drawing link
Prefabricated rods radial configuration and the complete design of dimensional parameters complete wire drawing optical fiber parameter to optimize the design of integrated molding prefabricated rods
Realization.The production that panda type polarization-preserving fiber can be directly carried out using prefabricated rods finished product of the present utility model is drawn, and avoids wire drawing
During the deterioration of fiber cladding noncircularity, malformation and operation implement limitation, reach wire drawing optical fiber parameter index request,
The production output capacity of prefabricated stick drawn wire is improved simultaneously.
What the purpose of this utility model was realized in：
A kind of polarization-preserving fiber preform, it includes the wire drawing that punching wire drawing extends enlarging into fine section, extension tailpipe section, tail pipe
Gripping section, wire drawing are in advance into the deformation section of cone reducing；
Wherein punching wire drawing and include fibre core and clad section into fine section, the clad section is coated on fibre core periphery, and
Symmetrical diplopore is additionally provided with clad section, the symmetrical diplopore is arranged symmetrically relative to fibre core；
For the extension tailpipe section located at punching wire drawing into fine section rear portion, extension tailpipe section is parallel into fine section with punching wire drawing,
Wire drawing gripping section is the tail end part for extending tailpipe section, and wire drawing gripping section is in horn-like, and its outside bore is more than inner side bore,
The wire drawing is the head end part for punching wire drawing into fine section into the deformation section of cone reducing in advance, and deformation section is in horn-like, its outside
Bore is less than inner side bore, and the top conehead of deformation section is designed using opening, and its surface is diplopore opening surface, extends tail in addition
Pipeline section is being additionally provided with frosted radiating segment by near caudal end part.
The cone deformed area top end diameter D6 ∈ of the deformation section（1mm, 12mm）, the cone deformed area transition length L6 of deformation section
∈（40mm, 80mm）, the top conehead of deformation section is using opening design, it is desirable to the diameter D8 ∈ of symmetrical diplopore opening surface
（1mm, 5mm）.
The wire drawing gripping section enlarging tail end diameter D5 ∈（32mm, 65mm）.
The length L7 ∈ of the frosted radiating segment（10mm, 200mm）, frosted radiating segment central point and tail pipe extension enlarging are drawn
The distance L57 ∈ of the enlarging caudal end of silk gripping section（200mm, 500mm）.
The bore D4 ∈ of the extension tailpipe section（22mm, 58mm）, length L4 ∈（300mm, 800mm）, extend tail pipe
Pipe external diameter and the prefabricated stick drawn wire punching of section are consistent into the long rod outside diameter D1 of fine section size, D1 ∈（30mm, 60mm）.
The diameter D2 ∈ of the fibre core（1mm, 5mm）, length L1 ∈（200mm, 600mm）, the diameter D3 ∈ of symmetrical diplopore
（10mm, 20mm）, the diplopore inset spacing T22 ∈ of symmetrical diplopore（1.5mm, 10mm）, wire drawing is into fine section（101）Outer circumferential edge with it is right
Claim the back gauge T31 ∈ of the hole outer circumferential edge of diplopore（2mm, 5mm）.
Compared with prior art, the beneficial effects of the utility model are：
1st, prefabricated rods punching wire drawing takes pre- into cone reducing fabrication design into the head end of fine section, to preparing wire drawing into optical fiber
Prefabricated rods carried out the extension of head end symmetrical diplopore in advance into cone design processing, so as to be carried out to the reducing region of wire drawing prefabricated rods
Shape it is preforming, guide the punching plunger wire drawing section of the double slotting stress rods of symmetrical diplopore of rear end according in advance into the conical design of cone
Deformed and reducing, so as to optimize the non-circularity of cladding parameter of wire drawing Formed Fiber, reached in the case where not taking shaping
The optical fiber structure shape of high-quality non-circularity of cladding；
2nd, prefabricated rods punching wire drawing takes pre- into cone reducing fabrication design into the head end of fine section, passes through the shape of reducing deformation
Shape Proportionality design, position has been carried out to the stress rods of twin jack and fixed, prevent displacement of the stress rods during wire drawing is turned around or
Tenesmus, maintain the shape design of polarization maintaining optical fibre；
3rd, prefabricated rods punching wire drawing takes pre- into cone reducing fabrication design into the head end of fine section, passes through reducing deformation top
Perforate design, it is ensured that whole symmetrical diplopore insertion prefabricated rods are overall, form the unobstructed of air-flow, fall the cone stage in wire drawing, with
Continuous rising of the prefabricated rods in wire drawing in-furnace temperature, has got through the inflation channel of heated gas, the bulbs of pressure is discharged, prevents from rousing
The fried cone of bubble has carried out position to the stress rods of twin jack and fixed, and prevents displacement or tenesmus of the stress rods during wire drawing is turned around,
Maintain the shape design of polarization maintaining optical fibre；
4th, the extension tailpipe section of prefabricated rods is carried out with punching into fine section using thermals source such as flame, electric furnace, plasma heatings
Docking, it is ensured that wire-drawing operation process consolidates, and the tail end for extending tailpipe section takes the design of enlarging, passes through the chi of enlarging tail end
Very little structure design so that whole wire-drawing shape prefabricated rods can be compressed during pickling, alkali cleaning, drying, hung, be fallen
The operation such as extension, do not damage and pollute effective drawing portion of punching wire drawing section.During wire drawing, folder rod can be to enlarging
End is clamped, and so during large scale diplopore prefabricated stick drawn wire is carried out, will not can not be clamped because rod deadweight is excessive.
5th, the tail end of the extension tailpipe section of prefabricated rods takes enlarging and the design for the frosted section that radiates, and passes through the frosted section that radiates
Length, distance etc. setting, the heat conduction of clamping device can be avoided, prevent the high temperature in fiber drawing furnace to be transmitted to clamping device
On, avoid the heat ageing of electric controller, also prevent pipe interior sealing rubber ring by heat ageing.
6th, the wire-drawing shape prefabricated rods described by the utility model, the wire drawer of whole polarization maintaining optical fibre can intactly be realized
Sequence, optimize geometry and the mechanical strength properties such as the non-circularity of cladding of drawing optical fiber, proof strength, wire drawing outage, ensure simultaneously
The polarization property of polarization maintaining optical fibre.
Brief description of the drawings
Fig. 1 is a kind of overall structure sketch of polarization-preserving fiber preform of the utility model.
Fig. 2 is a kind of tail end schematic side view of polarization maintaining optical fibre wire-drawing shape prefabricated rods of the utility model.
Fig. 3 is the structural design drawing that a kind of tail end-side of polarization maintaining optical fibre wire-drawing shape prefabricated rods of the utility model regards.
Wherein：Wire drawing is punched into fine section 101, fibre core 102, symmetrical diplopore 103, extension tailpipe section 104, wire drawing gripping section
105th, deformation section 106, radiating frosted section 107, diplopore opening surface 108, clad section 109.
Embodiment
Referring to figs. 1 to Fig. 3, the utility model provides a kind of polarization-preserving fiber preform, and it includes punching wire drawing into fine section
101st, tailpipe section 104, the wire drawing gripping section 105 of tail pipe extension enlarging, wire drawing are extended in advance into the deformation section 106 of cone reducing.
Wherein punch the wire drawing main body that wire drawing is panda type polarization-preserving fiber wire-drawing shape prefabricated rods into fine section 101, main paragraph
Panda type polarization-preserving fiber can be drawn into, the punching wire drawing includes fibre core 102 and clad section 109, the cladding part into fine section 101
Divide 109 to be coated on the periphery of fibre core 102, and symmetrical diplopore 103 is additionally provided with clad section 109, the symmetrical diplopore 103 is relative
It is arranged symmetrically in fibre core 102, wherein fibre core 102 is doping silica core layers, carries out disymmetry punching in polarization maintaining optical fibre female rod, realizes
The structure of panda type, the stress rods of design are inserted in female rod, the optical fiber structure that panda type polarization-preserving fiber stress type can be achieved is set
Meter.
The extension tailpipe section 104 located at punching wire drawing into the fine rear portion of section 101, extension tailpipe section 104 and punching wire drawing into
Fine section 101 is parallel, and the extension tailpipe section 104 is using thermals source such as flame, electric furnace, plasma heatings with punching wire drawing into fine section
101 are docked, and collapsing together, forms the moulding prefabricated rod structure of integration, and tail pipe extends the wire drawing gripping section 105 of enlarging
It is the tail end part for extending tailpipe section 104, the wire drawing gripping section 105 of tail pipe extension enlarging is in horn-like, and its outside bore is big
In inner side bore, tail end heating is carried out by thermal source, then by the way of mechanical enlarging, tail end enlarging is realized, clamps prefabricated
Rod carries out the function of wire drawing, and the wire drawing is the head end one for punching wire drawing into fine section 101 into the deformation section 106 of cone reducing in advance
Point, wire drawing is in advance horn-like into the deformation section 106 of cone reducing, and its outside bore is less than inner side bore, and head end is carried out by thermal source
Heating, carry out realizing diplopore wire drawing variable diameter design into the deformation structure of cone reducer in advance using the method for melting extension, it is ensured that become
Footpath ratio meets technological requirement, reduces the geometric deformation of prefabricated rods, optimizes the non-circularity of cladding performance parameters of wire drawing optical fiber, wire drawing
Designed in advance into the top conehead of the deformation section 106 of cone reducing using opening, its surface is diplopore opening surface 108.
Wherein wire drawing to head end of the punching wire drawing into fine section 101 in advance into the deformation section 106 of cone reducing by carrying out in advance into cone
The design of reducing, pre-designed, the structural deformation of adjustment disymmetry double-pore structure can be carried out to the process of prefabricated stick drawn wire reducing
Degree, it is ensured that because symmetric double cellular deformation amount caused by surface tension is controlled in drawing process.In advance into cone reducing
Design can effectively realize the installations of stress rods, block stress rods in head end, prevent displacement of the stress rods in drawing process,
So that it is guaranteed that the realization of wire drawing stress birfringence.Last wire drawing designs into the top of the deformation section 106 of cone reducing for perforate in advance,
During wire drawing is turned around, panda type polarization-preserving fiber wire-drawing shape prefabricated rods head end can be discharged and be closed heated gas,
The expansion bubbling of head end is prevented, realizes the wire-drawing technology technique of disymmetry diplopore.
The wire drawing gripping section 105 of tail pipe extension enlarging, can by the design of the tail end progress enlarging to extending tailpipe section 104
To carry out variable diameter design to the tail end for extending tail pipe, so as to realize the holding function in the drawing process of extension tail pipe and clean dry
Suspension holding function during dry.Optimize the circulation disposing capacity of each operation, it is ensured that in behaviour such as suspension, cleaning, wire drawing clampings
Make process, do not cause damage and pollution to prefabricated stick drawn wire effective coverage.
In addition extend tailpipe section 104 and be additionally provided with frosted radiating segment 107 by near caudal end part, frosted radiating segment 107 is used for
During wire drawing clamps, the heat of high temperature in fiber drawing furnace is obstructed, prevents collet segment heat conduction from overheating, Damage Coutrol device
Part.
Extend tailpipe section 104, the tail pipe extension wire drawing gripping section 105 of enlarging, wire drawing in advance the deformation section 106 into cone reducing,
Frosted radiating segment 107 is the collaborative design part of panda type polarization-preserving fiber wire-drawing shape prefabricated rods.
The deformation section 106 is made into cone reducing processing in advance by being carried out to head end of the punching wire drawing into fine section 101, wherein
The cone deformed area top end diameter D6 ∈ of deformation section 106（1mm, 12mm）, the cone deformed area transition length L6 ∈ of deformation section 106
（40mm, 80mm）, the top conehead of deformation section 106 is using opening design, it is desirable to the diameter D8 ∈ of symmetrical diplopore opening surface 108
（1mm, 5mm）.
The wire drawing gripping section 105 of the tail pipe extension enlarging to the tail end for extending tailpipe section 104 by carrying out expanding
It is made, wherein the enlarging tail end diameter D5 ∈ of tail pipe extension enlarging wire drawing gripping section 105（32mm, 65mm）.
The length L7 ∈ of the frosted radiating segment 107（10mm, 200mm）, the central point of frosted radiating segment 107 and tail pipe extend
The distance L57 ∈ of the enlarging caudal end of enlarging wire drawing gripping section 105（200mm, 500mm）.
The bore D4 ∈ of the extension tailpipe section 104（22mm, 58mm）, length L4 ∈（300mm, 800mm）, extend tail
The size that the pipe external diameter of pipeline section 104 and prefabricated stick drawn wire are punched into the long rod outside diameter D1 of fine section 101 is consistent, D1 ∈（30mm,
60mm）, punching wire drawing carried out pair into fine section 101 with extension tailpipe section 104 using thermals source such as flame, electric furnace, plasma heatings
Connect, collapsing together, forms the moulding prefabricated rod structure of integration.
The diameter D2 ∈ of fibre core 102 of the punching wire drawing into fine section 101（1mm, 5mm）, length L1 ∈（200mm,
600mm）, the diameter D3 ∈ of symmetrical diplopore 103（10mm, 20mm）, symmetrical diplopore 103 of the prefabricated rods punching wire drawing into fine section 101
Diplopore inset spacing T22 ∈（1.5mm, 10mm）, outer circumferential edge and symmetrical diplopore 103 of the prefabricated rods punching wire drawing into fine section 101
The back gauge T31 ∈ of hole outer circumferential edge（2mm, 5mm）.
Wire drawing is punched to carry out carrying out the panda type polarization-maintaining of enlarging frosted design into cone reducing, tail end in advance into the fine head end of section 101
The moulding prefabricated rod of drawing optical fibers, the punching wire drawing fills stress rods into the symmetrical diplopore 103 of fine section 101 and presses design requirement, complete
Holohedral symmetry inserts in the hole, and forms stress type polarization-preserving fiber preform structure.Panda type polarization-preserving fiber finished product is made by wire drawing again.
The utility model embodiment 1：
Head end is carried out in advance into cone reducing, and the panda type polarization-preserving fiber wire-drawing shape that tail end carries out enlarging frosted design is prefabricated
Rod.Including：
Wire drawing is in advance 6mm into the cone deformed area top end diameter D6 of cone reducing deformation section 106, and wire drawing is in advance into cone reducing deformation section
106 cone deformed area transition length L6 is 30mm, and wire drawing is in advance into the top conehead opening of cone reducing deformation section 106, symmetric double
The diameter D8 of hole opening surface 108 is 2mm；The enlarging tail end diameter D5 of tail pipe extension enlarging wire drawing gripping section 105 is 43mm, and frosted dissipates
The length L7 of hot arc 107 is 120mm, and the central point of frosted radiating segment 107 extends the enlarging of enlarging wire drawing gripping section 105 most with tail pipe
The distance L57 of tail end is 300mm；The bore D4 for extending tailpipe section 104 is 36mm, and length L4 is 600mm, extends tailpipe section
104 pipe external diameter and prefabricated stick drawn wire punching consistent, D1 40mm, punching wire drawing into the long rod outside diameter D1 of fine section 101 size
Into fine section 101 with extension tailpipe section 104 docked using thermals source such as flame, electric furnace, plasma heatings, collapsing together,
Form the moulding prefabricated rod structure of integration；It is 2.6mm that wire drawing, which is punched, into the diameter D2 of the fibre core 102 of fine section 101, and length L1 is
400mm, the diameter D3 of symmetrical diplopore 103 are 13mm, and prefabricated rods punch wire drawing into the diplopore of the symmetrical diplopore 103 of fine section 101
Back gauge T22 is 4mm, and prefabricated rods punch wire drawing into the back gauge T31 of the outer circumferential edge and the hole outer circumferential edge of symmetrical diplopore 103 of fine section 101
For 5mm.
Using above design structure parameter and preparation technology, double stress rods symmetric doubles are coordinated to insert, the stress that wire drawing is prepared
Type polarization maintaining optical fibre is a kind of structure of panda type polarization-preserving fiber, its realize main birefringenct property, wire drawing break fine rate parameter, sieve
Select intensity, single rod wire drawing fibre length, non-circularity of cladding parameter as follows：
Non-circularity of cladding：0.9%；
Single rod wire drawing is effectively fine long：55km；
Proof strength：100Kpsi；
Polarization crosstalk：Reach -30.2dB/km in 1550nm operation wavelengths；
The utility model embodiment 2~6：
Using the preparation process described by embodiment 1 and technological process, carried out in advance into cone reducing, tail end by changing head end
The structure design of the functional areas such as enlarging is carried out, the panda type polarization-preserving fiber wire-drawing shape prefabricated rods of following 5 kinds of embodiments are made,
And panda type polarization-preserving fiber product is drawn into, its design structure is described in table 1 below with the wire drawing realized and optical fiber property parameter：
Table 1：
Table 1 is embodiment 2~6, and five different head ends carry out carrying out the sheet of the structure design of enlarging into cone reducing, tail end in advance
The parameter size in utility model panda type polarization-preserving fiber wire-drawing shape preform arrangement, the geometry of prefabricated rods and each region is not
Together, 5 prefabricated rods, panda type polarization-preserving fiber is made using same drawing process wire drawing.As a result the 1550nm of 5 optical fiber is shown
The performance parameters of the polarization crosstalk of 1km length have all reached below -30dB at wavelength, the single rod wire drawing of different preform diameters
Length changes therewith, and for the prefabricated rods of major diameter, the effective delivery efficiency of length of string is higher, up to more than 120km.This practicality
New prefabricated rods, in the case where not taking morphology shaping, the optimization design of fiber cladding noncircularity is realized,
Reach less than 1.1%；It also assures that the proof strength of drawing optical fiber in more than 100Kpsi simultaneously.
In addition：It should be noted that above-mentioned embodiment is only a prioritization scheme of this patent, the skill of this area
Any change or improvement that art personnel are done according to above-mentioned design, within the protection domain of this patent..
Claims (6)
- A kind of 1. polarization-preserving fiber preform, it is characterised in that：It includes punching wire drawing into fine section（101）, extension tailpipe section （104）, tail pipe extension enlarging wire drawing gripping section（105）, wire drawing in advance into cone reducing deformation section（106）；Wire drawing is wherein punched into fine section（101）Include fibre core（102）And clad section（109）, the clad section（109）Cladding In fibre core（102）Periphery, and clad section（109）In be additionally provided with symmetrical diplopore（103）, the symmetrical diplopore（103）Relatively In fibre core（102）It is arranged symmetrically；The extension tailpipe section（104）Located at punching wire drawing into fine section（101）Rear portion, extend tailpipe section（104）With punching wire drawing Into fine section（101）It is parallel, wire drawing gripping section（105）It is extension tailpipe section（104）Tail end a part, wire drawing gripping section（105） In horn-like, its outside bore is more than inner side bore, and the wire drawing is in advance into the deformation section for boring reducing（106）It is to punch wire drawing into fibre Section（101）Head end a part, deformation section（106）In horn-like, its outside bore is less than inner side bore, deformation section（106）'s Top conehead is designed using opening, and its surface is diplopore opening surface（108）, extend tailpipe section in addition（104）Close to tail end Place is additionally provided with frosted radiating segment（107）.
- A kind of 2. polarization-preserving fiber preform according to claim 1, it is characterised in that：The deformation section（106）Cone become Shape area top end diameter D6 ∈（1mm, 12mm）, deformation section（106）Cone deformed area transition length L6 ∈（40mm, 80mm）, deformation Section（106）Top conehead designed using opening, it is desirable to symmetrical diplopore opening surface（108）Diameter D8 ∈（1mm, 5mm）.
- A kind of 3. polarization-preserving fiber preform according to claim 1, it is characterised in that：The wire drawing gripping section（105）Expand Mouth tail end diameter D5 ∈（32mm, 65mm）.
- A kind of 4. polarization-preserving fiber preform according to claim 1, it is characterised in that：The frosted radiating segment（107）'s Length L7 ∈（10mm, 200mm）, frosted radiating segment（107）Central point and tail pipe extension enlarging wire drawing gripping section（105）Enlarging The distance L57 ∈ of caudal end（200mm, 500mm）.
- A kind of 5. polarization-preserving fiber preform according to claim 1, it is characterised in that：The extension tailpipe section（104）'s Bore D4 ∈（22mm, 58mm）, length L4 ∈（300mm, 800mm）, extend tailpipe section（104）Pipe external diameter and prefabricated rods draw Silk is punched into fine section（101）Long rod outside diameter D1 size it is consistent, D1 ∈（30mm, 60mm）.
- A kind of 6. polarization-preserving fiber preform according to claim 1, it is characterised in that：The fibre core（102）Diameter D2 ∈（1mm, 5mm）, length L1 ∈（200mm, 600mm）, symmetrical diplopore（103）Diameter D3 ∈（10mm, 20mm）, symmetrical diplopore （103）Diplopore inset spacing T22 ∈（1.5mm, 10mm）, wire drawing is into fine section（101）Outer circumferential edge and symmetrical diplopore（103）Hole The back gauge T31 ∈ of outer circumferential edge（2mm, 5mm）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721008939.8U CN207143117U (en) | 2017-08-14 | 2017-08-14 | A kind of polarization-preserving fiber preform |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721008939.8U CN207143117U (en) | 2017-08-14 | 2017-08-14 | A kind of polarization-preserving fiber preform |
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| Publication Number | Publication Date |
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| CN207143117U true CN207143117U (en) | 2018-03-27 |
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| CN201721008939.8U Withdrawn - After Issue CN207143117U (en) | 2017-08-14 | 2017-08-14 | A kind of polarization-preserving fiber preform |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311445A (en) * | 2017-08-14 | 2017-11-03 | 江苏法尔胜光电科技有限公司 | A kind of polarization-preserving fiber preform |
-
2017
- 2017-08-14 CN CN201721008939.8U patent/CN207143117U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107311445A (en) * | 2017-08-14 | 2017-11-03 | 江苏法尔胜光电科技有限公司 | A kind of polarization-preserving fiber preform |
| CN107311445B (en) * | 2017-08-14 | 2023-01-17 | 江苏法尔胜光电科技有限公司 | Polarization maintaining optical fiber preform |
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