CN206328305U - A kind of symmetrical holes structural stress type polarization-preserving fiber preform - Google Patents
A kind of symmetrical holes structural stress type polarization-preserving fiber preform Download PDFInfo
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- CN206328305U CN206328305U CN201621363493.6U CN201621363493U CN206328305U CN 206328305 U CN206328305 U CN 206328305U CN 201621363493 U CN201621363493 U CN 201621363493U CN 206328305 U CN206328305 U CN 206328305U
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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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Abstract
The utility model devises a kind of symmetrical holes structural stress type polarization-preserving fiber preform, and the prefabricated rods include the symmetrical punching female rod that center is the symmetrical pore structure in Bang Xin areas, also comprising individually prefabricated filling stress rods；The diameter D1 ∈ [1mm of symmetrical pore structure preform core, 8mm], the diameter D2 ∈ [30mm of female rod, 60mm], the quantity n3 ∈ [2 of symmetrical holes, 12], the diameter D3 ∈ [6mm of symmetrical holes, 20mm], the distance of center circle D31 ∈ [4mm, 25mm] of symmetrical holes and symmetrical pore structure preform core.Fill stress rods to press in design requirement, the symmetrical holes of the symmetrical punching female rod of Non-completety symmetry insertion, form flexible and changeable stress type polarization-preserving fiber preform structure design.
Description
Technical field
The utility model is related to a kind of preform, the symmetrical holes being distributed more particularly, to a kind of asymmetric stress
Structural stress type polarization-preserving fiber preform, belongs to technical field of optical fiber.
Background technology
Polarization maintaining optical fibre, i.e. polarization-maintaining fiber, for transmitting linearly polarized light, are 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 ensure that linear polarization is constant using polarization maintaining optical fibre, improve relevant signal to noise ratio, to realize the high accuracy survey to physical quantity
Amount；Polarization maintaining optical fibre is mainly used in optical fiber current mutual inductor as a kind of special optical fiber, and optical fibre gyro, fibre optic hydrophone etc. is passed
The optical fiber telecommunications system such as sensor and DWDM, EDFA, is a kind of special optical fiber type having extensively using value.Stress birfringence
Polarization maintaining optical fibre mainly has bow-tie type polarization maintaining optical fibre, panda type polarization-preserving fiber and oval three kinds of 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, so as to produce so-called stress birfringence so that polarization-maintaining light
Fibre has linear polarization retention property.In design, the structure and stress mainly by two symmetrical cylinder stressed zones of change are adulterated
It is adjusted come the birefringenct property to polarization maintaining optical fibre.
A kind of preparation method of panda protecting polarized light fiber prefabricated rods is described in Chinese patent 201410597698.X, is used
The method sprayed outside assembling prefabricated component prepares panda protecting polarized light fiber prefabricated rods, but it is polarization maintaining optical fiber preformed to be not directed to other structures stress type
The product structure design of rod.A kind of manufacture device of polarization-preserving fiber preform is described in Chinese patent 201310658276.4
And manufacture method, assembling fixation is carried out to prefabricated component using design device, panda polarization-maintaining light is equally prepared using the method for outer spray
Fine prefabricated rods, but it is not directed to the product structure design of other structures stress type polarization-preserving fiber preform.In Chinese patent
Describe a kind of manufacture method of polarization maintaining optical fibre in 201510017430.9, but the structure design only to bow-tie type polarization maintaining optical fibre is entered
Description is gone, has carried out assembled while employing not rounded package assembly, have than larger gap, the temperature performance of coating is not carried out
Description.A kind of manufacture method of polarization maintaining optical fibre is described in Chinese patent 200410012671.6, one kind is mainly described
The assembling method of panda type polarization-preserving fiber prefabricated rods, employs square core design, is relatively hard to keep on circular and square composition surface
Stress structure is designed；The stress type polarization maintaining optical fibre of more structure designs is not described simultaneously yet.In Chinese patent
A kind of big specification combination of fiber-optic prefabricated rods of polarization maintaining optical fibre and its manufacture method are described in 200810197408.7, bear is directed to
The prefabricated rods design of cat stress type polarization maintaining optical fibre, only makes a call to two symmetrical holes in the both sides of rod core, and used stressed zone
Structure is circle, the stress type polarization-preserving fiber preform of more flexible and changeable stress structure designs is not described, it is impossible to extend
To wider array of product design.A kind of manufacture method of polarization maintaining optical fibre, only pin are described in Chinese patent 200810197409.1
The manufacture method repaiied except part of clad of the outer peripheral face of the panda type polarization-preserving fiber prefabricated rods designed disymmetry pore structure, with excellent
Change the performance of optical fiber, the structure of the prefabricated rods of more stress structures in itself is not carried out deeper into design.
The content of the invention
The purpose of this utility model is the structure design for extending above-mentioned stress type polarization-preserving fiber preform, and design is a kind of right
Claim pore structure stress type polarization-preserving fiber preform, realize the polarization maintaining optical fibre performance requirement of complex stress design.Stress can be improved
The design efficiency and realization rate of type polarization maintaining optical fibre, are the stress type of the properties such as high birefringence, high-temperature stability requirement
The preparation of polarization maintaining optical fibre provides design support.
What the purpose of this utility model was realized in：
A kind of symmetrical holes structural stress type polarization-preserving fiber preform, it is the symmetrical of Bang Xin areas that the prefabricated rods, which include center,
Punch female rod；In Bang Xin areas periphery, using processing modes such as laser, ultrasound, machineries, prefabricated pore structure is formd；It is described prefabricated
Hole is symmetrical arranged using rod core as the center of circle；The prefabricated rods are also comprising independent prefabricated filling stress rods, and filling stress rods are by design
It is required that in the pre-manufactured hole of the above-mentioned punching female rod of insertion, forming the stress design distribution of Non-completety symmetry structure, realizing that stress type is protected
Polarisation fibre preform arrangement.
A kind of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model, the rod core diameter D1 ∈ [1mm,
8mm], the diameter D2 ∈ [30mm, 60mm] of female rod, the quantity n3 ∈ [2,12] of pre-manufactured hole, pre-manufactured hole diameter D3 ∈ [6mm,
20mm], the distance of center circle D31 ∈ [4mm, 25mm] of pre-manufactured hole and rod core.
A kind of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model, the filling stress rods are independent prefabricated
Shaping, fill stress rods diameter D4 ∈ [5.5mm, 19.5mm], filling stress rods stressed zone structure for it is unstressed, circular,
It is fan-shaped, trapezoidal, square etc. several.
A kind of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model, the stressed zone knot of the filling stress rods
Structure sectional area accounts for the ratio r54 ∈ [30%, 90%] of filling stress rods global sections product.
A kind of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model, the symmetrical pore structure preform core phase
The ∈ of refractive index △ 1 [0.6%, 1.2%]；Fill the ∈ of non-stressed area relative index of refraction △ 6 [0.1%, 0.5%] of stress rods；Filling
The ∈ of stressed zone relative index of refraction △ 5 [- 1.2%, 0.1%] of stress rods.
A kind of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model, the filling stress rods will by design
Ask, in the pre-manufactured hole of the symmetrical punching female rod of Non-completety symmetry insertion, form stress type polarization-preserving fiber preform structure.
Compared with prior art, the beneficial effects of the utility model are：
1st, symmetrical punching female rod independently separates preparation with filling stress rods, improves the design of stress type polarization-preserving fiber preform
Flexibility, be also beneficial to the operation break-down production control of batch production, improve production efficiency and procedure quality management and control；
2nd, symmetrical punching female rod uses symmetrical pre-manufactured hole structure design, and the quantity of pre-manufactured hole can up to 12, convenient to answer
The birefringent structure design of power is realized, can realize the compatibility requirements of ultra-low birefringence and ultra-high double refraction；
3rd, filling stress rods are made using a variety of stressed zone shape and structure designs such as unstressed, circular, fan-shaped, trapezoidal, square
In theoretical design stress birefringence, have the design reference spatial dimension of maximum, and the division of labor can be realized during volume production
Sequence volume production, according to different application field, can carry out arbitrarily devised combination, realize that stress birfringence various structures flexibly will
Ask；
4th, the respective independent accurate geometry of symmetrical punching female rod and filling stress rods, the structure design of material are controlled with manufacture
System so that the uniformity of optical fiber, lot stability can obtain optimal guarantee.
The utility model symmetrical holes structural stress type polarization-preserving fiber preform, in symmetrical pore structure, Non-completety symmetry
The filling stress rods of different stress structure designs are inserted, the structure design of stress type polarization-preserving fiber preform is combined into, it is cleverer
Stress birfringence structure design is realized livingly.
The symmetrical holes structural stress type polarization-preserving fiber preform, can realize that flexible and changeable stress birfringence structure is set
Meter, by symmetrical holes perforation rod with insertion filling stress rods carry out it is a variety of match, with realize complex stress design polarization maintaining optical fibre
It can require.The design efficiency and realization rate of stress type polarization maintaining optical fibre can be improved, is the spies such as high birefringence, high-temperature stability
The preparation of the stress type polarization maintaining optical fibre of different performance requirement provides design support.
Brief description of the drawings
Fig. 1 symmetrically punches female rod for a kind of 4 holes of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
Structure diagram.
Fig. 2 symmetrically punches female rod for a kind of 6 holes of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
Structure diagram.
Fig. 3 symmetrically punches female rod for a kind of 8 holes of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
Structure diagram.
Fig. 4 should for a kind of the various of filling stress rods of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
Power plot structure schematic diagram.
Fig. 5 fills for a kind of 4 hole Non-completety symmetries of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
The stress type polarization-maintaining that the filling stress rods of circular stressed zone structure and the filling stress rods of unstressed plot structure are combined is prefabricated
Rod structural representation.
Fig. 6 fills for a kind of 4 hole Non-completety symmetries of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
The stress type polarization-maintaining that the filling stress rods of fan-shaped stressed zone structure and the filling stress rods of unstressed plot structure are combined is prefabricated
Rod structural representation.
Fig. 7 fills for a kind of 6 hole Non-completety symmetries of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
The stress type polarization-maintaining that the filling stress rods of fan-shaped stressed zone structure and the filling stress rods of unstressed plot structure are combined is prefabricated
Rod structural representation.
Fig. 8 fills for a kind of 6 hole Non-completety symmetries of symmetrical holes structural stress type polarization-preserving fiber preform of the utility model
The filling stress of the filling stress rods of fan-shaped stressed zone structure, the filling stress rods of trapezoidal stressed zone structure and unstressed plot structure
The stress type polarization-maintaining preform arrangement schematic diagram that rod is combined.
Wherein：
Rod core 101, symmetrical punching female rod 102, pre-manufactured hole 103, filling stress rods 104, stressed zone 105, non-stressed area
106。
Embodiment
To enable above-mentioned purpose of the present utility model, feature and advantage more obvious understandable, with reference to specific experiment
The symmetrical holes structural stress type polarization-preserving fiber preform of this patent is described in detail data：
The utility model embodiment 1：
The filling stress rods and the filling stress rods of unstressed plot structure of the 4 circular stressed zone structures of hole Non-completety symmetry filling
Stress type polarization-maintaining prefabricated rods（Referring specifically to Fig. 1,4,5）.Including：
Symmetrical pore structure prefabricated rods, by the processing mode such as ultrasound, machinery, laser, are prepared 4 holes and symmetrically punch mother
Rod, female rod design parameter is：The quantity n of pre-manufactured hole 103 is 4；The diameter D3 of pre-manufactured hole 103 is 13.2mm；Pre-manufactured hole 103 and rod
The distance of center circle D31 of core 101 is 8mm；The diameter D1 of rod core 101 is 2.84mm；The diameter D2 of female rod 102 is 40.5mm；Fill stress rods
104 diameter D4 is 12.8mm；The structure of stressed zone 105 for filling stress rods is unstressed and circular two kinds；Fill stress rods
The ratio r54 that the structural section product of stressed zone 105 accounts for filling stress rods global sections product is 85%；
Meanwhile, above-mentioned rod core 101 is 0.85% with the refractive index contrast △ 1 of pure quartz material；Pure quartz material refractive index
n2=1.457
；
The relative index of refraction △ 6 of non-stressed area 106 for filling stress rods is 0.13%；Fill the stressed zone circle knot of stress rods
The relative index of refraction △ 5 of structure 105 is -0.9%.Unstressed and circular two kinds of filling stress rods are using the symmetrical punching of crossed-symmetrical insertion
The design of rod, is assembled into 4 hole Non-completety symmetry stress structure design stress type polarization-preserving fiber preform structures, then pass through wire-drawer-tower
It is drawn into stress type polarization maintaining optical fibre.
The stress type polarization maintaining optical fibre prepared using above design structure parameter and preparation technology is a kind of panda type polarization-maintaining
The structure of optical fiber, the main birefringenct property that it is realized is as follows：
Polarization crosstalk：- 29.8dB/km is reached in 1550nm operation wavelengths；
Clap length：2.457mm is reached in 1550nm operation wavelengths.
Embodiment 2~6：
Using the preparation process described by embodiment 1 and technological process, by changing symmetrical perforation rod and filling stress rods
Structure design, be made following 5 kinds of embodiments stress type polarization maintaining optical fibre product, its design structure with realize birefringenct property
Parameter is described in table 1 below：
Table 1：
Table 1 is embodiment 2~6, five symmetrical perforation rods of difference and the utility model of the structure design of filling stress rods
The refractive index in stress type polarization-maintaining optical blank structure, the geometry of prefabricated rods and each region is of different sizes, and 5 prefabricated rods are adopted
Stress type polarization maintaining optical fibre is made with same drawing process wire drawing.As a result the adjustable range of the mode birefringence of 5 optical fiber is shown
For 0.8 × 10-4~6.4 × 10-4Between wider scope, the adjustable range for causing the bat of optical fiber long reach 1.86mm~
8.62mm.Under the structure design of the so big birefringent adjustable range of stress type polarization maintaining optical fibre, the polarization crosstalk of optical fiber can
To be maintained at -30dB/km higher level, the performance to stress type polarization maintaining optical fibre in a variety of different application fields disclosure satisfy that
The requirement of design.
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)
1. a kind of symmetrical holes structural stress type polarization-preserving fiber preform, it is characterised in that：The prefabricated rods include female rod（102）With
The rod core at its center（101）, with rod core（101）Centered on female rod on be symmetrically arranged with pre-manufactured hole（103）, the pre-manufactured hole
（103）It is interior to include filling stress rods（104）；The pre-manufactured hole（103）Quantity n3 ∈ [2,12] in even number.
2. a kind of symmetrical holes structural stress type polarization-preserving fiber preform as claimed in claim 1, it is characterised in that：The rod core
（101）Diameter D1 ∈ [1mm, 8mm], the diameter D2 ∈ [30mm, 60mm] of the female rod, the pre-manufactured hole（103）Diameter
D3 ∈ [6mm, 20mm], pre-manufactured hole（103）With rod core（101）Distance of center circle D31 ∈ [4mm, 25mm].
3. a kind of symmetrical holes structural stress type polarization-preserving fiber preform as claimed in claim 1, it is characterised in that：The filling
Stress rods（104）It is individually pre-formed, fills stress rods（104）Diameter D4 ∈ [5.5mm, 19.5mm].
4. a kind of symmetrical holes structural stress type polarization-preserving fiber preform as claimed in claim 1, it is characterised in that：The filling
Stress rods（104）Stressed zone（105）Structure is unstressed, circular, fan-shaped, trapezoidal, square one or more, the filling
Stress rods（104）Stressed zone structure sectional area account for the ratio r54 ∈ [30%, 90%] of filling stress rods global sections product.
5. a kind of symmetrical holes structural stress type polarization-preserving fiber preform as claimed in claim 1, it is characterised in that：The rod core
（101）The ∈ of relative index of refraction △ 1 [0.6%, 1.2%], the filling stress rods（104）Non-stressed area (106) relative
The ∈ of rate △ 6 [0.1%, 0.5%], fill stress rods（104）Stressed zone（105）The ∈ of relative index of refraction △ 5 [- 1.2%, 0.1%].
6. a kind of symmetrical holes structural stress type polarization-preserving fiber preform as claimed in claim 1, it is characterised in that：Fill stress
Rod（104）By design requirement, Non-completety symmetry insertion symmetrically in the pre-manufactured hole (103) of punching female rod, forms stress type polarization-maintaining light
Fine preform arrangement.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621363493.6U CN206328305U (en) | 2016-12-13 | 2016-12-13 | A kind of symmetrical holes structural stress type polarization-preserving fiber preform |
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| CN201621363493.6U CN206328305U (en) | 2016-12-13 | 2016-12-13 | A kind of symmetrical holes structural stress type polarization-preserving fiber preform |
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| CN206328305U true CN206328305U (en) | 2017-07-14 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746586A (en) * | 2016-12-13 | 2017-05-31 | 江苏法尔胜光电科技有限公司 | A kind of symmetrical holes structural stress type polarization-preserving fiber preform |
| CN115385567A (en) * | 2022-08-10 | 2022-11-25 | 江苏法尔胜光电科技有限公司 | Variable stress region shape polarization maintaining optical fiber and preparation method thereof |
-
2016
- 2016-12-13 CN CN201621363493.6U patent/CN206328305U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106746586A (en) * | 2016-12-13 | 2017-05-31 | 江苏法尔胜光电科技有限公司 | A kind of symmetrical holes structural stress type polarization-preserving fiber preform |
| CN115385567A (en) * | 2022-08-10 | 2022-11-25 | 江苏法尔胜光电科技有限公司 | Variable stress region shape polarization maintaining optical fiber and preparation method thereof |
| CN115385567B (en) * | 2022-08-10 | 2023-08-29 | 江苏法尔胜光电科技有限公司 | Shape polarization maintaining optical fiber with variable stress area and preparation method thereof |
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Effective date of registration: 20211102 Address after: 214400 No.278 Chengjiang Middle Road, high tech Zone, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: JIANGSU FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 214434 No. 278 Chengjiang Middle Road, Jiangyin City, Wuxi City, Jiangsu Province Patentee before: JIANGSU FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Patentee before: FASTEN GROUP Co.,Ltd. |