CN201859232U - Optical fiber butt-joint device - Google Patents
Optical fiber butt-joint device Download PDFInfo
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- CN201859232U CN201859232U CN2010205199786U CN201020519978U CN201859232U CN 201859232 U CN201859232 U CN 201859232U CN 2010205199786 U CN2010205199786 U CN 2010205199786U CN 201020519978 U CN201020519978 U CN 201020519978U CN 201859232 U CN201859232 U CN 201859232U
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- tubular structure
- optical fiber
- joint
- fiber
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Abstract
The utility model discloses an optical fiber butt-joint device, which mainly comprises a tubular structure consisting of memory alloy materials. The initial inner diameter DT1 of an inner hole of the tubular structure is slightly smaller than the outer diameter of a bare fiber after a coating layer is removed, the inner diameter DT2 after low-temperature expansion of the inner hole is slightly larger than the outer diameter of the bare fiber, and at the moment, optical fibers can freely move in the inner hole of the tubular structure. When the two optical fibers are in butt joint with each other in the tubular structure, the tubular structure is heated so as to retrace and clamp an optical fiber joint, accordingly, the optical fibers are automatically aligned, and butt joint of the optical fibers is completed. The optical fiber butt-joint device can be manufactured into an arrayed tubular structure to complete simultaneous butt-joint of a plurality of optical fibers so as to greatly improve efficiency and reduce cost. The device is small and durable in structure, can be used in optical circuit connection in a photoelectric hybrid circuit or a pure optical circuit board, can also be used in splicing of FTTH (fiber to the home) and ribbon optical cables and emergency optical cable repair occasions, and can be used in automatic butt-joint link in optical fiber testing after expansion when two-way memory alloy is selected.
Description
Technical field
The utility model relates to the device that a kind of optical fiber connects, and specifically is that a kind of memorial alloy pipe that utilizes carries out the device that optic fibre end connects.
Background technology
Optical fiber has been widely used in each area, the whole world as communication line, and along with the development of optical fiber sensing technology, Fibre Optical Sensor also more and more is used in some inflammable and explosive places.Because the most of optical fiber that are applied in the reality at present are silica fibres, its core diameter is generally in the scope of 8-80 micron, so the joint requirement to optical fiber is very high, between the 8-10 micron, the joint deviation of two optical fiber bigger loss will occur for one micron as the core diameter of single-mode fiber.In the present actual engineering, continuing of optical fiber mainly contains two kinds of methods: be to use optical fiber splicer 1), the high temperature by the electrode discharge arc is welded together two optical fiber heads.But this method does not allow to use in inflammable and explosive occasion, as oil depot, ammunition depot, the inferior place of coal mine; 2) be the method for using the optical fiber cold connector, mechanical type optical fiber cold connector as the special company of Jiangsu space, Fiber to the home (FTTH) and some emergent interim fibre junction occasions but such fibre-optical splice generally is suitable for, it also is not suitable for abominable, complex environment down and need use for a long time and the occasion higher to stability requirement, connects as the joint of the Fibre Optical Sensor of hazardous area.Certainly, other also have some by the bonding method that continues of adhesives such as epoxy resin and the fiber active linker of preparation joint, the problems such as temperature, hydrone, ageing properties but they also exist, thereby the request for utilization that does not reach Fibre Optical Sensor.
On the other hand, along with the development of technology, increasing electro-optic hybrid circuit board has appearred, and the trend of oriented high density, pure light path plate development.In electro-optic hybrid circuit board, connection between the light path of higher density is a stubborn problem, need the high-precision joints of optical fibre, some highdensity narrow spaces can't hold the operation of ordinary optic fibre heat sealing machine, do not allow yet than the multiresidue fiber reel around the space, and a large amount of uses of optical fiber splicer also are than higher on cost; And fibre-optical splice volume commonly used is big, reliability is low, it is fixing to be difficult for, difficult operation, and the light path that more is unsuitable for higher density connects.
And the appearance of new feature optical fiber has also proposed harsh more requirement to continuing, as novel optical fibers such as photonic crystal fiber, carbon coated fibers, not only require the high also requirement of connecting quality can not destroy optical fiber structure, the closure that causes air-gap as the air-gap of photonic crystal fiber during with common heat sealing machine, the light-transfer characteristic that has increased opticalfiber splicing loss and changed this optical fiber is used all influential to experiment and engineering.
So, be badly in need of at present a kind of cheap, long-time stability good, volume is little, the easy fiber alignment device of fixing, easy to operate, non high temperature or electric arc processing.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the utility model provides a kind of memorial alloy pipe that utilizes to carry out the device that optic fibre end connects, and this device has the advantages that cost is low, easy to use, long-time stability are good.
For solving the problems of the technologies described above, the technical solution adopted in the utility model is: a kind of fiber alignment device, it is characterized in that: comprise a tubular structure that is made of memory alloy material, the two ends of tubular structure are the optical fiber introducing ports of taper, the initial inside diameter D in tubular structure stage casing
T1, low temperature expansion back inside diameter D
T2With the relation of optical fiber be:
[?1?-?（1-S）×?K?]×?D
F?＜?D
T1?＜?D
F (1)
D
F ＜?D
T2 ＜?D
F?×?(?1+?S×K?) (2)
D
FBe the external diameter of when butt joint optical fiber, K is the shape memory coefficient of strain of the tubular structure that is made of memory alloy material, and S is the scale-up factor of choosing, and general preferred value is 0.5.The one way shape-memory effect of common Ultimum Ti maximum can reach 8%, and promptly the K value is 8%, and the value that S generally chooses is 0.5.
The two ends of the tubular structure that two optic fibre ends of need butt joints are constituted from the memory alloy material after expanded inner diameter import respectively, and in the middle part of the endoporus of tubular structure, contact, according to the character of memorial alloy and prior setting, make this tube structure contracts and, make two optical fiber autoregistrations and form joint with corresponding method two optical fiber end bandings.The described method of tube structure contracts that makes has heating, cooling method, stress induced method and induced by magnetic field method, these need select to use according to the characteristic and the process of different types of memorial alloy, what wherein the most frequently used and technology were the most ripe is Ultimum Ti and heating, particularly the Ultimum Ti that is mixed with neodymium in the disperse mode has good normal temperature storage, and its using method is: normal temperature is the inside diameter D of the tubular structure that is made of NiTi neodymium memory alloy material of processing down
T1Be D
F96%, the inside diameter D of the tubular structure that NiTi neodymium memory alloy material is constituted at low temperatures
T1Expansion is D
FAbout 104% inside diameter D
T2, carry out the training of shape recovery Effects when needed certainly, return to normal temperature after the processing and preserve.In use, be D from internal diameter respectively easily with two optic fibre ends
T2The two ends of tubular structure import and contact, then to the reverse transformation temperature of tubular structure heating (need be heated to about 90 ℃) to the titanium nickel neodymium memory alloy material that constitutes tubular structure as NiTi neodymium memory alloy material, at this moment the tubular structure radial shrinkage and the termination of banding two optical fiber firmly, and two optical fiber are aimed at automatically, finish the joint of optical fiber.
Axial tubular structure along tubular structure has aperture slots one.
Contain index-matching fluid or refractive index match gel in the described tubular structure internal diameter.
Two and plural tubular structure forming array is side by side arranged.
There are pilot hole or guide rod in the both sides of described array.
The SME of described tubular structure is the magnetosensitive induction type.
Described tubular structure is to have the round trip Shape Memory Effect, can remove the mated condition of optical fiber after finishing corresponding work behind the fiber alignment, is used for the test of optical fiber cable production run as the optical fiber automatic butt device based on tubular structure.
Described tubular structure is to be made of the memorial alloy film.
Described tubular structure is the magnetron sputtering method preparation.
Described tubular structure be by thickness greater than 100 microns memorial alloy thin plate through crooked or rollingly constitute.
On the inwall of described tubular structure coatings is arranged, as copper or aldary, high molecular film layer etc.
Described outer tubular structure is to be made of heat-shrinkage material, as the radiation crosslinking heat-shrinkage material.
In described heat-shrinkage material, be mounted with reinforcement, as reinforcements such as stainless steel wire, ceramic rods.
The utility model compared with prior art has the following advantages:
1, a kind of fiber alignment device of the present utility model, have simple in structure, reasonable in design, cheap, long-time stability are good, volume is little, easily fixing, easy to operate, non high temperature or arc welding processing;
2, a kind of fiber alignment device of the present utility model, can make the multicore prefabricated component, finish continuing of multifiber simultaneously, be applicable to continuing of ribbon fiber, and long-term behaviour is stable, volume is little, cost is low, particularly every core fibre all is with the self-aligned manner butt joint, butt joint quality height, the low butt joint that can satisfy large-scale ribbon fiber of butt joint loss;
3, a kind of fiber alignment device of the present utility model, at the tubular structure of selecting suitable double-pass memory effect to constitute, and suitable phase change conditions such as magnetic field, can be built into optical fiber automatic butt device, go for the test optical fiber task in enormous quantities of optical fiber cable factory or Fibre Optical Sensor company, reduce test duration and cost significantly.
4, a kind of fiber alignment device of the present utility model is suitable for continuing of special optical fiber, and the use that continues as optical fiber such as photonic crystal fiber, extraordinary coated fibers not only can form firm joint, can not destroy the structure of optical fiber or the special coating of optical fiber simultaneously;
5, a kind of fiber alignment device of the present utility model, also be suitable for the connection of light path in electro-optic hybrid circuit board and the pure light path plate, this installs that not only volume is little, cost is low, easy to operate, and easy to operate, long-term behaviour stable, shock-resistant, fixing easily, and can finish the butt joint of a large amount of parallel light paths, be a kind of good light path connector.
In sum, that the utility model device has is simple in structure, reasonable in design, cheap, long-time stability are good, volume is little, easily fixing, easy to operate, no high temperature or arc welding process, result of use are good, have wide use prospect.
Below by drawings and Examples, the technical scheme of utility model is described in further detail.
Description of drawings
Fig. 1 is the structural representation of first embodiment of the present utility model.
Fig. 2 is the cross-sectional view of first embodiment of the present utility model.
Cross-sectional view when Fig. 3 is the fiber alignment of first embodiment of the present utility model.
Cross-sectional view when Fig. 4 is the first embodiment optical fiber align of the present utility model.
Fig. 5 is the structural representation of second embodiment of the present utility model.
Fig. 6 is the structural representation of the utility model the 3rd embodiment.
Fig. 7 faces the direction structure synoptic diagram for the A joint of the utility model the 3rd embodiment.
Fig. 8 is the structural representation of the utility model the 3rd embodiment.
Description of reference numerals:
1-tubular structure; 2-endoporus; 3-taper introducing port; 4-tubaeform introducing port;
6-optical fiber; 7-index-matching fluid; 8-guide rod; 9-array tubular structure;
10-A joint; 11-guide hole; 12-substrate; 13-feature board; 15-B joint.
Embodiment
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, there is taper entrance hole 3 at the two ends of the tubular structure 1 that is made of memorial alloy, endoporus 2 between two taper entrance holes 3 and they communicate the initial inside diameter D of endoporus 2
T1, low temperature expansion back inside diameter D
T2With the relation of optical fiber 6 be:
[?1?-?（1-S）×?K?]×?D
F?＜?D
T1?＜?D
F (3)
D
F ＜?D
T2 ＜?D
F?×?(?1+?S×K?) (4)
D
FThe external diameter of optical fiber 6 when being butt joint, often finger is removed the bare fibre of coat, and communication is 125 microns with the bare fibre external diameter, positive and negative deviation is not more than 0.7 micron, K is the shape memory coefficient of strain of the tubular structure 1 that is made of memory alloy material, and S is the scale-up factor of choosing, and general preferred value is 0.5.The one way shape-memory effect of common Ultimum Ti maximum can reach 8%, and promptly the K value is 8%, and the value that S generally chooses is 0.5.
In the present embodiment, the initial inside diameter of the endoporus 2 of the tubular structure 1 of the memory alloy material that initial fabrication is come out is D
T1, and D
T1Satisfy formula (3), the internal diameter that this tubular structure 1 is placed low temperature environment and expand endoporus 2 is to D
T2, and D
T2Satisfying formula (4), is to preserve this device then.When using, take out by need, with two optical fiber 6 terminations that need butt joint after removing coat and cutting respectively the taper introducing port 3 from the two ends of tubular structure 1 advance and contact, as shown in Figure 3, preferred way is between two optical fiber, 6 terminations index-matching fluid 7 to be arranged, then to tubular structure 1 heating or according to other pre-conditioned processing, as change stress or magnetic field intensity, make tubular structure 1 radial shrinkage and grip optical fibers 6, as shown in Figure 4, at this moment optical fiber is also aimed at automatically, and the aligning of so far finishing two optical fiber 6 continues.Can encapsulate again in tubular structure 1 outside with routine or bigger slightly heat-shrinkable T bush when needing with reinforcement.
The surface of the endoporus 2 of tubular structure 1 also can the plating thin film, as copper or aldary, and macromolecular material, this film can balanced tubular structure 1 when radial shrinkage to the pressure of optical fiber 6, prevent to occur on optical fiber 6 joint surfaces sharp-pointed stress point.
As shown in Figure 5, in the present embodiment, as different from Example 1: the optical fiber introducing port at the two ends of tubular structure 1 is tubaeform introducing port 4.This structure can reduce the volume of tubular structure 1 and increase the diameter of introducing port, makes things convenient for the importing and the butt joint of optical fiber 6.In the present embodiment, the structure of remainder, annexation and principle of work are all identical with embodiment 1.
Embodiment 3
As Fig. 6, Fig. 7, shown in Figure 8, in the present embodiment, A joint 10 has guide rod 8 and contains the termination of 4 optical fiber 6, wherein the termination of 4 optical fiber is positioned at the middle part of array tubular structure 9, array tubular structure 9 is to be composited through riveted joint, welding or adhesive are bonding by substrate 12 and feature board 13, the flat board that feature board 13 is made of memory alloy material is through low temperature punching press or rolling forming, feature board 13 satisfies formula (4) with the inscribed circle diameter of the cavity of each receiving optical fiber 6 of substrate 12 formations, and the inscribed circle diameter of the cavity after shrinking satisfies formula (3); The termination that guide hole 11 and 4 optical fiber 6 are arranged in the B joint 15, A joint 10 and B joint 15 are pegged graft, guide rod 8 is slidingly matched with guide hole 9 and locatees, the termination of the optical fiber 6 that B joint 15 comprises is contacted respectively in 4 cavitys of array tubular structure 9 respectively with 4 optic fibre ends of A joint 10, there is index-matching fluid 7 termination that preferred way is an optical fiber 6, be poised for battle 9 heating of tubulation shape structure then, or according to other pre-conditioned processing, as change stress or magnetic field intensity, make the cavity radial shrinkage and the grip optical fibers 6 of array tubular structure 9, make each to optical fiber align, so far finish 4 optical fiber 6 docking mission simultaneously.Change through simple, can finish the butt joint that other cores are counted optical fiber.A joint 10 can be preset screw or screw hole with B joint 15, makes things convenient for installing and using of A joint 10 and B joint 15.
The above; it only is preferred embodiment of the present utility model; be not that the utility model is imposed any restrictions; everyly any simple modification that above embodiment did, change and equivalent structure are changed, all still belong in the protection domain of technical solutions of the utility model according to the utility model technical spirit.
Claims (9)
1. fiber alignment device is characterized in that: comprise a tubular structure that is made of memory alloy material, the two ends of tubular structure are the optical fiber introducing ports of taper, the initial inside diameter D of tubular structure endoporus
T1, low temperature expansion back inside diameter D
T2With the relation of optical fiber be:
[?1?-?（1-S）×?K?]×?D
F?＜?D
T1?＜?D
F (1)
D
F ＜?D
T2 ＜?D
F?×?(?1+?S×K?) (2)
D
FBe the external diameter of when butt joint optical fiber, K is the shape memory coefficient of strain of the tubular structure that is made of memory alloy material, and S is the scale-up factor of choosing.
?
2. according to the described a kind of fiber alignment device of claim 1, it is characterized in that: aperture slots axially arranged one on tubular structure along described tubular structure.
3. according to the described a kind of fiber alignment device of claim 1, it is characterized in that: contain index-matching fluid or refractive index match gel in the described tubular structure endoporus.
4. according to the described a kind of fiber alignment device of claim 1, it is characterized in that: two and plural tubular structure forming array tubular structure is side by side arranged.
5. according to the described a kind of fiber alignment device of claim 4, it is characterized in that: there are pilot hole or guide rod in the both sides of described array tubular structure.
6. according to the described a kind of fiber alignment device of claim 1, it is characterized in that: the SME of described tubular structure is the magnetosensitive induction type.
7. according to the described a kind of fiber alignment device of claim 1, it is characterized in that: described tubular structure is to have the round trip Shape Memory Effect.
8. according to the described a kind of fiber alignment device of claim 1, it is characterized in that: described tubular structure is to be made of the memorial alloy film.
9. according to the described a kind of fiber alignment device of claim 1, it is characterized in that: described tubular structure be by thickness greater than 100 microns memorial alloy thin plate through crooked or rollingly constitute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205199786U CN201859232U (en) | 2010-09-07 | 2010-09-07 | Optical fiber butt-joint device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205199786U CN201859232U (en) | 2010-09-07 | 2010-09-07 | Optical fiber butt-joint device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201859232U true CN201859232U (en) | 2011-06-08 |
Family
ID=44105036
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205199786U Expired - Fee Related CN201859232U (en) | 2010-09-07 | 2010-09-07 | Optical fiber butt-joint device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201859232U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401939A (en) * | 2010-09-07 | 2012-04-04 | 西安金和光学科技有限公司 | Optical fiber butt joint device |
| CN107942447A (en) * | 2013-06-28 | 2018-04-20 | Toto株式会社 | Optical receptacle |
| CN108695780A (en) * | 2018-06-14 | 2018-10-23 | 成都理工大学 | A kind of anti-slip memorial alloy power circuit pipe fitting |
-
2010
- 2010-09-07 CN CN2010205199786U patent/CN201859232U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102401939A (en) * | 2010-09-07 | 2012-04-04 | 西安金和光学科技有限公司 | Optical fiber butt joint device |
| CN107942447A (en) * | 2013-06-28 | 2018-04-20 | Toto株式会社 | Optical receptacle |
| CN108695780A (en) * | 2018-06-14 | 2018-10-23 | 成都理工大学 | A kind of anti-slip memorial alloy power circuit pipe fitting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110608 Termination date: 20110907 |