CN109031525B - Surface gradual change scatter-type cladding light power stripper preparation facilities and method - Google Patents
Surface gradual change scatter-type cladding light power stripper preparation facilities and method Download PDFInfo
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- CN109031525B CN109031525B CN201811018791.5A CN201811018791A CN109031525B CN 109031525 B CN109031525 B CN 109031525B CN 201811018791 A CN201811018791 A CN 201811018791A CN 109031525 B CN109031525 B CN 109031525B
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Abstract
Present disclose provides a kind of surface gradual change scatter-type cladding light power stripper preparation facilities and methods, and wherein preparation facilities includes: reaction tube, fixed frame, injection hole and flowmeter；Reaction tube bottom end is equipped with connecting hole, and optical fiber to be corroded passes through connecting hole, and connect with reaction tube bottom end seal；Optical fiber to be corroded is connect with fixed frame；Injection hole is arranged on reaction tube；Container equipped with corrosive liquid is connected by pipeline with injection hole, and corrosive liquid is injected in reaction tube, flowmeter is additionally provided on pipeline.The gradual change corrosion device that the disclosure provides is according in optical fiber ablation section to be corroded, along laser transmission direction, the etching time of cladding surface is along optical fiber axial direction to be corroded continuously by small increase, the crystalline solid grain density of corresponding cladding surface is gradually increased, to realize effect that cladding light scattered power is gradually increased.
Description
Technical field
This disclosure relates to Fiber laser technology field more particularly to a kind of surface gradual change scatter-type cladding light power stripper
Preparation facilities and method.
Background technique
Cladding pumping technique realizes several multikilowatt optical-fiber laser outputs.But the remnants of laser amplifier output stage end
Pump light reduces optical fiber laser output beam quality.More seriously, remnant pump light passes between adjacent power grade
When defeated, additional heat load can be generated to the passive device in laser system between adjacent power grade, endangers the steady of passive device
Fixed work.In addition, high-capacity optical fiber laser is widely used in field of laser processing.When optical-fiber laser acts on material to be processed
When surface, material surface largely scatters the inner cladding that light can be coupled into output optical fibre, and along output optical fibre reverse transfer, right
Optical fibre device and pump laser diode in laser system generate harm, therefore cladding light power stripper is that high power swashs
Necessary component units in optical transmission cable.To sum up, cladding light power stripper full optical fiber laser system and its application in not
It can or lack, be the output beam quality for optimizing full-optical-fiber laser and the core device for guaranteeing laser system high power operating reliability
Part.Device heat load caused by cladding light filters out is the key problem of cladding light power stripper.
The research of cladding light power stripper is then to be improved to means with what preparation method and structure designed, and target is had
There is the stripper of low-temperature-rise performance.Currently used method is the method preparation based on coating high refractive index polymer, but high
The defects such as the intrinsic heating conduction of index polymers is poor, and thermal damage's threshold value is low, limit the high power applications of this method.
Method preparation surface scattering type stripper based on chemical surface modification is most easily implemented, and does not draw in preparation process
Enter thermal damage's medium, greatly improve stripper filters out power level.Utilize the exposed covering of chemical reagent erodable
Surface, erosion process are a kind of chemical reaction crystallization process.It is designed on removing section frequently with homogeneous corrosion structure, defect
It is that the temperature rise uniformity of device and power attenuation performance cannot be taken into account.When etching time is bigger than normal, the scattering of optical fiber surface is crystallized
When body grain density is larger, although very high power attenuation performance can be realized, cladding light can be a large amount of in extremely short distance
Leakage, is easy to produce local heat effect, device surface temperature rise is violent.When etching time is less than normal, the scattering crystalline solid of optical fiber surface
When grain density is smaller, cladding light is axially slowly filtered out along stripping area, although device temperature rise reduces, is filtered out under equal length
Quantity of power declines to a great extent.
Summary of the invention
(1) technical problems to be solved
Present disclose provides a kind of surface gradual change scatter-type cladding light power stripper preparation facilities and methods, at least portion
Decompose technical problem certainly set forth above.
(2) technical solution
According to one aspect of the disclosure, a kind of surface gradual change scatter-type cladding light power stripper preparation facilities is provided
It include: reaction tube, reaction tube bottom end is equipped with connecting hole, and optical fiber to be corroded passes through connecting hole, and connect with reaction tube bottom end seal；
Fixed frame, optical fiber to be corroded are connect with fixed frame；Injection hole, injection hole are arranged on reaction tube；Container equipped with corrosive liquid is logical
It crosses pipeline to be connected with injection hole, corrosive liquid is injected in reaction tube；Container and injection hole equipped with corrosive liquid is arranged in flowmeter
On connected pipeline.
In some specific embodiments of the disclosure, injection hole is arranged in reaction tube side wall lower ends, and corrosive liquid is by under reaction tube
End injection.
In some specific embodiments of the disclosure, injection hole, which is beaten up, to be set in reaction tube sidewall upper, and corrosive liquid is by reaction tube
End injection.
In some specific embodiments of the disclosure, flowmeter includes the flowmeter of peristaltic pump and/or acid-alkali-corrosive-resisting.
A kind of preparation of surface gradual change scatter-type cladding light power stripper another aspect of the present disclosure provides
Method includes: step A: optical fiber interlude coat to be corroded being stripped, naked fibre section is exposed；Step B: the both ends of optical fiber to be corroded
It is placed in reaction tube by fixed frame clamping, keeps optical fiber to be corroded parallel with reaction tube and do not touched with reaction tube；Step C: dress
There is the container of corrosive liquid to be connected by pipeline with injection hole, corrosive liquid is injected in reaction tube；Step D: it is controlled by flowmeter
The corrosion flow quantity in reaction tube is injected, the speed that control corrosion rate liquid rises in reaction tube makes along laser transmission direction to corruption
Lose the etching time of the cladding surface in optical fiber ablation section continuously by small increase, the crystalline solid grain density of cladding surface by
Gradual change is big.
In some specific embodiments of the disclosure, in step D, corrosive liquid injection flow is constant, and etching time is along fiber axis
To do linear change or corrosive liquid injection flow change over time, etching time does nonlinear change along optical fiber axial direction.
(3) beneficial effect
It can be seen from the above technical proposal that disclosure surface gradual change scatter-type cladding light power stripper preparation facilities and
Method at least has the advantages that one of them or in which a part:
(1) the surface gradual change scatter-type cladding light power stripper preparation facilities that the disclosure provides is shelled according to optical fiber to be corroded
From in section, along laser transmission direction, the etching time of cladding surface, continuously by small increase, is corresponded to along optical fiber axial direction to be corroded
The crystalline solid grain density of cladding surface is gradually increased, to realize effect that cladding light scattered power is gradually increased.
(2) since the operating distance period of the light of high-NA in cladding light and cladding surface is small, small value aperture light
It is big with the operating distance period of cladding surface, as the numerical aperture of remaining cladding light constantly declines along laser transmission direction, lead to
Cross the scattered power for being gradually increased cladding surface, it can be achieved that cladding light along optical fiber axial direction homogenous diffusion purpose.
(3) the surface gradual change scatter-type cladding light power stripper preparation facilities that the disclosure provides can take into account the temperature of device
Rise performance and power attenuation performance.
(4) in the surface gradual change scatter-type cladding light power stripper preparation facilities that the disclosure provides, pass through flowmeter pair
Corrosion flow quantity in injection reaction tube is controlled, and then the rate of climb and corresponding production of the control corrosion rate liquid in reaction tube
Raw different etching time gradient reaches the axially varying speed degree of continuous regulation etching time with this, realizes surface gradually
Become the preparation of scatter-type cladding light power stripper.
Detailed description of the invention
Fig. 1 be embodiment of the present disclosure surface gradual change scatter-type cladding light power stripper preparation facilities in lower end injection type gradually
Become the structural schematic diagram of corrosion device.
Fig. 2 is the axially varying curve of covering etching time according to Fig. 1 stripper prepared.
Fig. 3 be embodiment of the present disclosure surface gradual change scatter-type cladding light power stripper preparation facilities in upper end injection type gradually
Become the structural schematic diagram of corrosion device.
Fig. 4 is the axially varying curve of covering etching time according to Fig. 3 stripper prepared.
Fig. 5 is the stripper fibre cladding schematic surface of different etching times in the embodiment of the present disclosure.
Fig. 6 is the flow diagram of embodiment of the present disclosure surface gradual change scatter-type cladding light power stripper preparation method.
[embodiment of the present disclosure main element symbol description in attached drawing]
1- optical fiber to be corroded；2- reaction tube；
3- fixed frame；4- injection hole；
5- flowmeter；6- corrosive liquid.
Specific embodiment
Present disclose provides a kind of surface gradual change scatter-type cladding light power stripper preparation facilities and methods, wherein preparing
Device includes: optical fiber, reaction tube, fixed frame, injection hole and flowmeter to be corroded；Optical fiber interlude coat to be corroded strips,
Expose naked fibre section；Reaction tube bottom end is equipped with connecting hole, and optical fiber to be corroded passes through connecting hole, and connect with reaction tube bottom end seal；
The upper end of bare optical fiber section to be corroded is corresponding with reaction tube high scale 0cm, on the lower end and reaction tube of bare optical fiber section to be corroded
Scale 10cm is corresponding；Optical fiber to be corroded is connect with fixed frame；Injection hole is arranged on reaction tube；Container equipped with corrosive liquid passes through
Pipeline is connected with injection hole, and corrosive liquid is injected in reaction tube, flowmeter is additionally provided on pipeline.The gradual change that the disclosure provides is rotten
Device is lost according in optical fiber ablation section to be corroded, and along laser transmission direction, the etching time of cladding surface is along optical fiber to be corroded
Axially consecutively by small increase, the crystalline solid grain density of corresponding cladding surface is gradually increased, with realize cladding light scattered power by
Cumulative big effect.
For the purposes, technical schemes and advantages of the disclosure are more clearly understood, below in conjunction with specific embodiment, and reference
The disclosure is further described in attached drawing.
Disclosure some embodiments will be done referring to appended attached drawing in rear and more comprehensively describe to property, some of but not complete
The embodiment in portion will be shown.In fact, the various embodiments of the disclosure can be realized in many different forms, and should not be construed
To be limited to this several illustrated embodiment；Relatively, these embodiments are provided so that the disclosure meets applicable legal requirement.
In first exemplary embodiment of the disclosure, a kind of surface gradual change scatter-type covering optical power removing is provided
Device preparation facilities.Fig. 1 is lower end injection in embodiment of the present disclosure surface gradual change scatter-type cladding light power stripper preparation facilities
The structural schematic diagram of type gradual change corrosion device.Fig. 2 is the axially varying song of covering etching time according to Fig. 1 stripper prepared
Line.As depicted in figs. 1 and 2, light to be corroded is used as using 20/400pm (NA=0.06/0.46) doubly clad optical fiber in this embodiment
Fibre 1, after corroding 1 interlude coat of optical fiber and stripping, the naked fibre segment length of exposing is 100mm.Using KHF2Prepare corrosive liquid
6,6 concentration of corrosive liquid is 0.1g/ml.Injection hole 4 is arranged in 2 side wall lower ends of reaction tube, and the container equipped with corrosive liquid 6 passes through pipeline
It is connected with injection hole 4, corrosive liquid 6 is injected in reaction tube 2, gradual change corrosion is carried out to naked fibre section.2 internal diameter of reaction tube is 8mm,
On be provided with the scale mark of 0-10cm, precision 1cm.Reaction tube bottom end is provided with connecting hole, and optical fiber 1 to be corroded passes through connection
Hole, and connect with 2 bottom end seal of reaction tube, it can be specifically connected and sealed using paraffin.Optical fiber 1 to be corroded and fixed frame 3
Connection, fixed frame 3 clamp the both ends of optical fiber 1 to be corroded, and keep optical fiber 1 to be corroded parallel with reaction tube 2 and do not touch with reaction tube 2
It touches.The upper end of 1 naked fibre section of optical fiber to be corroded is corresponding with the scale 0cm on reaction tube 2, the lower end of 1 naked fibre section of optical fiber to be corroded with
Scale 10cm on reaction tube 2 is corresponding.Flowmeter 5 can select the flowmeter of peristaltic pump and/or acid-alkali-corrosive-resisting, pass through flow
6 flow of corrosive liquid counted in 5 pairs of injection reaction tubes 2 controls, and then the rate of climb of the control corrosion rate liquid 6 in reaction tube 2
And correspond to and generate different etching time gradients, the axially varying speed degree of etching time is regulated and controled with this.When using compacted
When dynamic pump is as flowmeter 5, pass through modification peristaltic pump idler wheel revolving speed control injection flow.The idler wheel revolving speed and reaction tube of peristaltic pump
2 internal diameters have codetermined the rate of climb of the corrosive liquid 6 in reaction tube 2, that is, determine the etching time gradient along fiber axis.If
Setting the etching time gradient on reaction tube 2 in the section 0-2cm is 2min/cm；Corrosion in the section 2-7cm of reaction tube 2
Time gradient is 3.5min/cm；Etching time gradient in the section 7-10cm of reaction tube 2 is 8.6min/cm；When corrosive liquid 6
When liquid level is reached at the position 0cm, stops flowmeter 5 and work, timing 15min.The optical fiber to be corroded 1 corroded is then taken out, is used
Deionized water is cleaned, and the preparation of the cladding light power stripper of etching time nonlinear change is completed.Covering optical power removing
Device, the covering optical tests for being 0.46 using numerical aperture, when the air-cooled lower hectowatt power of room temperature filters out, optical fiber 1 to be corroded is removed
Maximum temperature is 30 DEG C in section.
In second exemplary embodiment of the disclosure, a kind of gradual change corrosion device is additionally provided.Fig. 3 is that the disclosure is real
Apply the structural representation of upper end injection type gradual change corrosion device in a surface gradual change scatter-type cladding light power stripper preparation facilities
Figure.Fig. 4 is the axially varying curve of covering etching time according to Fig. 3 stripper prepared.Fig. 5 be the embodiment of the present disclosure in not
With the stripper fibre cladding schematic surface of etching time.As shown in Figures 3 to 5, it is to infuse with the difference of first embodiment
Enter the setting of hole 4 in 2 sidewall upper of reaction tube, corrosive liquid 6 is injected by 2 upper end of reaction tube.20/400pm (NA is used in the present embodiment
=0.06/0.46) doubly clad optical fiber be used as optical fiber 1 to be corroded.The etching time gradient that the section 0-10cm in reaction tube 2 is arranged is
4min/cm.When corrosive liquid 6 is constantly injected into submergence naked fibre section, stops flowmeter 5 and work, timing 15min.When flowmeter 5 selects
When with peristaltic pump, idler wheel is rotated backward, and extracts corrosive liquid 6 out, is taken out the optical fiber to be corroded 1 corroded, is washed with deionized water, complete
At the preparation of the cladding light power stripper of etching time linear change.The cladding light power stripper is using numerical aperture
0.46 covering optical tests, when the air-cooled lower hectowatt power of room temperature filters out, it is 32 that optical fiber 1 to be corroded, which removes maximum temperature in section,
℃。
In first exemplary embodiment of the disclosure, a kind of surface gradual change scatter-type covering optical power stripping is additionally provided
From device preparation method.Fig. 6 is the flow chart element of embodiment of the present disclosure surface gradual change scatter-type cladding light power stripper preparation method
Figure.As shown in Figure 6, comprising: step A: optical fiber interlude coat to be corroded being stripped, naked fibre section is exposed；Step B: wait corrode
The both ends of optical fiber are placed in reaction tube by fixed frame clamping, are kept optical fiber to be corroded parallel with reaction tube and are not touched with reaction tube
Touching；Step C: the container equipped with corrosive liquid is connected by pipeline with injection hole, and corrosive liquid is injected in reaction tube；Step D: pass through
Corrosion flow quantity in flowmeter control injection reaction tube, the speed that control corrosion rate liquid rises in reaction tube are transmitted along laser
Direction makes the etching time of the cladding surface in optical fiber ablation section to be corroded continuously by small increase, the crystallization of cladding surface
Body grain density becomes larger
Specifically in step D, corrosive liquid injection flow is constant, and etching time does linear change, or corrosion along optical fiber axial direction
Liquid injection flow changes over time, and etching time does nonlinear change along optical fiber axial direction.
So far, attached drawing is had been combined the embodiment of the present disclosure is described in detail.It should be noted that in attached drawing or saying
In bright book text, the implementation for not being painted or describing is form known to a person of ordinary skill in the art in technical field, and
It is not described in detail.In addition, the above-mentioned definition to each element and method be not limited in mentioning in embodiment it is various specific
Structure, shape or mode, those of ordinary skill in the art simply can be changed or be replaced to it.
According to above description, those skilled in the art should be to disclosure surface gradual change scatter-type cladding light power stripper
Preparation facilities and method have clear understanding.
In conclusion the disclosure provide surface gradual change scatter-type cladding light power stripper preparation facilities and method according to
In optical fiber ablation section to be corroded, along laser transmission direction, the etching time edge optical fiber axial direction to be corroded of cladding surface is continuously
By small increase, the crystalline solid grain density of corresponding cladding surface is gradually increased, to realize effect that cladding light scattered power is gradually increased
Fruit.
It should also be noted that, the direction term mentioned in embodiment, for example, "upper", "lower", "front", "rear", " left side ",
" right side " etc. is only the direction with reference to attached drawing, not is used to limit the protection scope of the disclosure.Through attached drawing, identical element by
Same or similar appended drawing reference indicates.When may cause understanding of this disclosure and cause to obscure, conventional structure will be omitted
Or construction.
And the shape and size of each component do not reflect actual size and ratio in figure, and only illustrate the embodiment of the present disclosure
Content.In addition, in the claims, any reference symbol between parentheses should not be configured to the limit to claim
System.
It unless there are known entitled phase otherwise anticipates, the numerical parameter in this specification and appended claims is approximation, energy
Enough bases pass through the resulting required characteristic changing of content of this disclosure.Specifically, all be used in specification and claim
The middle content for indicating composition, the number of reaction condition etc., it is thus understood that repaired by the term of " about " in all situations
Decorations.Under normal circumstances, the meaning expressed refers to include by specific quantity ± 10% variation in some embodiments, some
± 5% variation in embodiment, ± 1% variation in some embodiments, in some embodiments ± 0.5% variation.
Furthermore word "comprising" does not exclude the presence of element or step not listed in the claims.It is located in front of the element
Word "a" or "an" does not exclude the presence of multiple such elements.
The word of ordinal number such as " first ", " second ", " third " etc. used in specification and claim, with modification
Corresponding element, itself is not meant to that the element has any ordinal number, does not also represent the suitable of a certain element and another element
Sequence in sequence or manufacturing method, the use of those ordinal numbers are only used to enable an element and another tool with certain name
Clear differentiation can be made by having the element of identical name.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of each open aspect,
Above in the description of the exemplary embodiment of the disclosure, each feature of the disclosure is grouped together into single implementation sometimes
In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect
The disclosure of shield requires features more more than feature expressly recited in each claim.More precisely, as following
Claims reflect as, open aspect is all features less than single embodiment disclosed above.Therefore,
Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself
All as the separate embodiments of the disclosure.
Particular embodiments described above has carried out further in detail the purpose of the disclosure, technical scheme and beneficial effects
Describe in detail it is bright, it is all it should be understood that be not limited to the disclosure the foregoing is merely the specific embodiment of the disclosure
Within the spirit and principle of the disclosure, any modification, equivalent substitution, improvement and etc. done should be included in the guarantor of the disclosure
Within the scope of shield.
Claims (6)
1. a kind of surface gradual change scatter-type cladding light power stripper preparation facilities, comprising: reaction tube, the reaction tube bottom end are set
There is connecting hole, optical fiber to be corroded passes through the connecting hole, and connect with the reaction tube bottom end seal；
It is characterized in that, the surface gradual change scatter-type cladding light power stripper preparation facilities further include:
Fixed frame, the optical fiber to be corroded are connect with the fixed frame；
Injection hole, the injection hole are arranged on the reaction tube；Container equipped with corrosive liquid passes through pipeline and the injection hole
It is connected, corrosive liquid is injected in the reaction tube；
Flowmeter is arranged on the pipeline that the container equipped with corrosive liquid is connected with the injection hole.
2. preparation facilities according to claim 1, the injection hole setting in the reaction tube side wall lower ends, corrosive liquid by
The injection of reaction tube lower end.
3. preparation facilities according to claim 1, the injection hole setting in the reaction tube sidewall upper, corrosive liquid by
The injection of reaction tube upper end.
4. preparation facilities according to claim 1, the flowmeter includes the flow of peristaltic pump and/or acid-alkali-corrosive-resisting
Meter.
5. a kind of preparation method of surface gradual change scatter-type cladding light power stripper, comprising: step A: will be wait corrode in optical fiber
Between section coat strip, expose naked fibre section；Step B: the both ends of optical fiber to be corroded are placed in reaction tube by fixed frame clamping, are made
Optical fiber to be corroded is parallel with reaction tube and does not touch with reaction tube；
It is characterized in that, the preparation method further include:
Step C: the container equipped with corrosive liquid is connected by pipeline with injection hole, and corrosive liquid is injected in reaction tube；
Step D: the corrosion flow quantity in injection reaction tube, the speed that control corrosion rate liquid rises in reaction tube are controlled by flowmeter
Degree makes the etching time of the cladding surface in optical fiber ablation section to be corroded continuously by small increase, packet along laser transmission direction
The crystalline solid grain density of layer surface becomes larger.
6. preparation method according to claim 5, wherein in step D, corrosive liquid injection flow is constant, and etching time is along light
Fibre axially does linear change or corrosive liquid injection flow changes over time, and etching time does nonlinear change along optical fiber axial direction.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811018791.5A CN109031525B (en) | 2018-08-31 | 2018-08-31 | Surface gradual change scatter-type cladding light power stripper preparation facilities and method |
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| CN201811018791.5A CN109031525B (en) | 2018-08-31 | 2018-08-31 | Surface gradual change scatter-type cladding light power stripper preparation facilities and method |
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| CN110361809B (en) * | 2019-07-05 | 2020-12-22 | 深圳联品激光技术有限公司 | Optical fiber, optical fiber cladding power filter, optical fiber laser and optical fiber preparation method |
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| JPH03126631A (en) * | 1989-10-09 | 1991-05-29 | Nippon Electric Glass Co Ltd | Washing method for inner surface of glass tube for optical fiber |
| CN105372759A (en) * | 2015-11-30 | 2016-03-02 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber wet etching method for cladding light detacher |
| CN105866887A (en) * | 2016-05-09 | 2016-08-17 | 南方科技大学 | Cladding optical stripper and manufacturing device and method thereof and packaging structure |
| CN107681420A (en) * | 2016-08-01 | 2018-02-09 | 南京理工大学 | Double clad fiber cladding photospallation heat abstractor based on chemical corrosion method |
| CN207440336U (en) * | 2017-11-17 | 2018-06-01 | 珠海光库科技股份有限公司 | The optical fiber and fiber fabrication apparatus that a kind of cladding light filters out |
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2018
- 2018-08-31 CN CN201811018791.5A patent/CN109031525B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH03126631A (en) * | 1989-10-09 | 1991-05-29 | Nippon Electric Glass Co Ltd | Washing method for inner surface of glass tube for optical fiber |
| CN105372759A (en) * | 2015-11-30 | 2016-03-02 | 武汉锐科光纤激光技术股份有限公司 | Optical fiber wet etching method for cladding light detacher |
| CN105866887A (en) * | 2016-05-09 | 2016-08-17 | 南方科技大学 | Cladding optical stripper and manufacturing device and method thereof and packaging structure |
| CN107681420A (en) * | 2016-08-01 | 2018-02-09 | 南京理工大学 | Double clad fiber cladding photospallation heat abstractor based on chemical corrosion method |
| CN207440336U (en) * | 2017-11-17 | 2018-06-01 | 珠海光库科技股份有限公司 | The optical fiber and fiber fabrication apparatus that a kind of cladding light filters out |
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