CN209674038U - A kind of optical-fiber bundling device - Google Patents
A kind of optical-fiber bundling device Download PDFInfo
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- CN209674038U CN209674038U CN201920689837.XU CN201920689837U CN209674038U CN 209674038 U CN209674038 U CN 209674038U CN 201920689837 U CN201920689837 U CN 201920689837U CN 209674038 U CN209674038 U CN 209674038U
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Abstract
The utility model relates to technical field of optical fiber more particularly to a kind of optical-fiber bundling devices.It is fine (1) including input signal, several inputs pump fine (2) and output optical fibre (3), the input signal is fine (1), input is connect after pumping fine (2) fused biconical taper cutting with output optical fibre (3), it is characterized by: the output optical fibre (3) is quadruple-clad fiber, respectively first layer, the second layer, third layer and the 4th layer, wherein the diameter of first layer is more than or equal to the diameter of fine (1) fibre core of input signal, and NAin*TR≤NAout, wherein NAin is the fine numerical aperture of input pumping, TR is to draw cone ratio, numerical aperture of the NAout between the output optical fibre second layer and third layer.It is welded using this optical-fiber bundling device, welding effect is preferable.
Description
Technical field
The utility model relates to technical field of optical fiber more particularly to a kind of optical-fiber bundling devices.
Background technique
Laser welding is a kind of more complicated laser processing technology.According to the height of the laser beam quality of use, swash
Photocoagulation can be divided into single-mode laser welding and multi-mode laser welding.In certain applications, in order to improve weldquality, often
It is required that two kinds of light sources use simultaneously.
Although there are pump signal bundling devices for the prior art, i.e., more root multimode fibers and single nearly single mode optical fiber are closed simultaneously
Beam is dissipated into doubly clad optical fiber, but since the covering numerical aperture of conventional doubly clad optical fiber is very big (typically larger than 0.46)
Angle is excessive, and reliability is poor, so can make single-mode optics and multimode photosynthesis in this way according to this pump signal bundling device
It is poor to obtain welding effect.
Summary of the invention
The technical problem to be solved by the utility model is to provide a kind of preferable optical-fiber bundling devices of reliability, using this
Kind optical-fiber bundling device is welded, and welding effect is preferable.
The technical scheme adopted by the utility model is a kind of optical-fiber bundling device, including input signal fibre, several front pumps
Pu is fine and output optical fibre, the input signal fibre, input are connect after pumping fine fused biconical taper cutting with output optical fibre, feature
Be: the output optical fibre is quadruple-clad fiber, respectively first layer, the second layer, third layer and the 4th layer, wherein first layer
Diameter be more than or equal to the long and slender core of input signal diameter,
And NAin*TR≤NAout, wherein NAin is the fine numerical aperture of input pumping, and TR is to draw cone ratio, and NAout is defeated
Numerical aperture between the optical fiber second layer and third layer out.
Preferably, the first layer is core layer, the second layer is the first quartzy surrounding layer, and third layer is fluorine doped glass
Layer, the 4th layer adds ultraviolet gel coating for the second quartzy surrounding layer.
Preferably, being additionally provided with cladding light on the output optical fibre strips area.
Preferably, it further includes shell, and the input signal is fine, input pumping is fine and output optical fibre is arranged at
In shell, and cooling heat sink structure is additionally provided in the shell.
Preferably, it is the six roots of sensation that the input pumping is fine, and six roots of sensation input pumping fibre is uniformly arranged on input signal fibre circle
Zhou Shang.
Using the above structure compared with prior art, the utility model has the advantage that the application can be by multimode light
It coaxially exports with single mode photosynthesis, and is exported using four coverings, so that the angle of divergence is not too big, reliability is higher, Jin Erke
To apply in welding field, so that welding effect is preferable.
Setting cladding light strips area, can effectively strip cladding light, improve the safety of bundling device, make laser bundling device more
Add and reliably runs in high-power environment.
Because laser can generate larger heat during closing beam, setting cooling heat sink structure can be very good to play cooling
Function.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of optical-fiber bundling device of the utility model.
As shown in the figure: 1, input signal is fine；2, input pumping is fine；3, output optical fibre；4, cladding light strips area；5, shell；
6, cooling heat sink structure.
Specific embodiment
The utility model is described further below by way of specific embodiment, but the utility model be not limited only to
Lower specific embodiment.
Specific embodiment: using (6+1) * 1 bundling device, is equipped with a shell 5, there is six roots of sensation input pumping fibre 2, every input
The size of pumping fibre 2 is 200/220 micron, an input signal fibre 1, and the size of input signal fibre 1 is 25/250 micron, the six roots of sensation
Input pumping fibre 2 is uniformly arranged on around an input signal fibre 1, then after fine fused biconical taper, by whole overall diameter
Draw cone to 400 microns, fibre core is slightly less than 25 microns, then draw taper at outer diameter flat region cut, it is molten with 3 phase of output optical fibre
Connect, the size of output optical fibre 3 is 25/400/440/600, respectively core layer, the first quartzy surrounding layer, fluorine doped glass layer with
And second quartzy surrounding layer add ultraviolet gel coating, meet brightness conservation, NAin*TR≤NAout, in which: draw cone than TR=
The numerical aperture NAout of (220*2+250)/400=1.725, the first silica clad and fluorine doped glass layer in output optical fibre is
0.22, as long as meeting fine numerical aperture NAin≤NAout/TR=0.128 of input pumping.
And be additionally provided with cladding light on output optical fibre 3 and strip area 4, stripping area can choose the cone formed after covering drawing cone
The frosted layer in shape region.
And it is additionally provided with cooling heat sink structure 6 in shell 5, is cooled down by cooling heat sink structure 6 to bundling device.
It is different to commonly enter the multimode optical wavelength transmitted in the signal light and periphery input pumping fibre of the long and slender core transmission of signal,
Typically, signal light 1080nm, pump light 915nm.Equally signal light can be injected into output optical fibre through peripheral pump light,
Then the single-mode optics of final output are identical with multimode optical wavelength.In addition, periphery input pumping fibre can also transmit green light or ultraviolet light
It can be transmitted with optical fiber Deng other, and help to improve the light of welding quality.
Finally, it should be noted that above embodiments are only to illustrate the technical solution of the utility model, rather than its limitations；
Although the utility model is described in detail with reference to the foregoing embodiments, it will be understood by those of skill in the art that its according to
It can so modify to technical solution documented by previous embodiment, or part of technical characteristic is replaced on an equal basis
It changes；And these are modified or replaceed, and the essence of corresponding technical solution is not made to be detached from various embodiments of the utility model technical side
The spirit and scope of case.
Claims (5)
1. a kind of optical-fiber bundling device, including input signal fine (1), several inputs pump fine (2) and output optical fibre (3), described
Input signal fibre (1), input are connect after pumping fine (2) fused biconical taper cutting with output optical fibre (3), it is characterised in that: described defeated
Optical fiber (3) is quadruple-clad fiber, respectively first layer, the second layer, third layer and the 4th layer out, and wherein the diameter of first layer is big
In the diameter for being equal to fine (1) fibre core of input signal,
And NAin*TR≤NAout, wherein NAin is the fine numerical aperture of input pumping, and TR is to draw cone ratio, and NAout is output light
Numerical aperture between the fine second layer and third layer.
2. a kind of optical-fiber bundling device according to claim 1, it is characterised in that: the first layer is core layer, the second layer
For the first quartzy surrounding layer, third layer is fluorine doped glass layer, and the 4th layer adds ultraviolet gel coating for the second quartzy surrounding layer.
3. a kind of optical-fiber bundling device according to claim 1, it is characterised in that: be additionally provided with packet on the output optical fibre (3)
Floor light strips area (4).
4. a kind of optical-fiber bundling device according to claim 1, it is characterised in that: it further includes shell (5), and the input
Signal fibre (1), input pump fine (2) and output optical fibre (3) is arranged in shell (5), and are additionally provided in the shell (5)
Cooling heat sink structure (6).
5. a kind of optical-fiber bundling device according to claim 1, it is characterised in that: it is the six roots of sensation that the input, which pumps fine (2), and
Six roots of sensation input pumps fine (2) and is uniformly arranged on fine (1) circumference of input signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689837.XU CN209674038U (en) | 2019-05-15 | 2019-05-15 | A kind of optical-fiber bundling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920689837.XU CN209674038U (en) | 2019-05-15 | 2019-05-15 | A kind of optical-fiber bundling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209674038U true CN209674038U (en) | 2019-11-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920689837.XU Active CN209674038U (en) | 2019-05-15 | 2019-05-15 | A kind of optical-fiber bundling device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209674038U (en) |
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2019
- 2019-05-15 CN CN201920689837.XU patent/CN209674038U/en active Active
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