CN108346966A - A kind of high-power fiber cladding light stripper - Google Patents
A kind of high-power fiber cladding light stripper Download PDFInfo
- Publication number
- CN108346966A CN108346966A CN201810240936.XA CN201810240936A CN108346966A CN 108346966 A CN108346966 A CN 108346966A CN 201810240936 A CN201810240936 A CN 201810240936A CN 108346966 A CN108346966 A CN 108346966A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- heat sink
- cladding light
- shell
- hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005253 cladding Methods 0.000 title claims abstract description 39
- 239000000835 fiber Substances 0.000 title claims abstract description 29
- 239000013307 optical fiber Substances 0.000 claims abstract description 55
- 239000007788 liquid Substances 0.000 claims description 17
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 4
- 239000004411 aluminium Substances 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052802 copper Inorganic materials 0.000 claims description 4
- 239000010949 copper Substances 0.000 claims description 4
- 150000002576 ketones Chemical class 0.000 claims description 4
- 150000001298 alcohols Chemical class 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 claims 1
- 239000003292 glue Substances 0.000 abstract description 8
- 238000009825 accumulation Methods 0.000 abstract description 3
- 230000003287 optical effect Effects 0.000 abstract description 3
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 3
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- KWOLFJPFCHCOCG-UHFFFAOYSA-N Acetophenone Chemical compound CC(=O)C1=CC=CC=C1 KWOLFJPFCHCOCG-UHFFFAOYSA-N 0.000 description 2
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 2
- 239000000084 colloidal system Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 239000002202 Polyethylene glycol Substances 0.000 description 1
- 206010037660 Pyrexia Diseases 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001223 polyethylene glycol Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/0407—Liquid cooling, e.g. by water
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/02—Constructional details
- H01S3/04—Arrangements for thermal management
- H01S3/042—Arrangements for thermal management for solid state lasers
Abstract
The invention belongs to optical fiber laser fields, are related to a kind of high-power fiber cladding light stripper.The present invention solves in the prior art because ultraviolet glue inner heat is serious, the problem of causing accumulation of heat or even burn optical device.The present invention includes shell and heat sink；Through-hole is equipped in the shell；The both ends of through-hole are equipped with end cover, form closed vessel；Filled with high refractive index solution in closed vessel；It is heat sink to be arranged in through-hole；The optical fiber of cladding light to be divested is arranged in through-hole, and the both ends of optical fiber are pierced by from the end cover at shell both ends respectively, and optical fiber immerses in high refractive index solution, and optical fiber is contacted with heat sink, described heat sink for radiating.
Description
Technical field
The invention belongs to optical fiber laser fields, are related to a kind of high-power fiber cladding light stripper.
Background technology
Optical fiber laser has many advantages, such as good beam quality, efficient, simple in structure, stability is high, thus wide
It is general to be applied to the fields such as laser communications, medical instruments and equipment, aviation Precision Machining and automobile making.
Doubly clad optical fiber is the core of high-capacity optical fiber laser, during high power optical fibre laser generates and amplifies, pump
Pu light repeatedly passes through fibre core during transmission so that pumping efficiency dramatically increases, to improve output power.Practical application
In, pump light can not possibly be completely absorbed, inevitably can a part of pump light of remaining in the inner cladding of doubly clad optical fiber.In addition, molten
Part signal light caused by connecing, the laser of higher order mode and spontaneous emission light (ASE) can also be entered from fibre core in covering.This
A little light remained in covering can cause to seriously affect to the beam quality of laser.
Therefore, high power optical fibre laser generate and amplify in, it is necessary to the residual cladding light in doubly clad optical fiber into
Row divests.
Currently, removal inner cladding residual light most popular method is to divest the coat of doubly clad optical fiber and surrounding layer, directly
It is connected on the outside of inner cladding and coats ultraviolet glue.The high refractive index of ultraviolet glue is in the light transmitted in inner cladding, inner cladding due to that can not expire
Sufficient total reflection condition and be refracted into high refractive index colloid, to play the role of divesting cladding light.
Ultraviolet glue has very strong light absorptive as high molecular polymer, but its thermal conductivity and heat resistance be not strong.Optical fiber exists
Its own will produce heat in the case of high power, when the covering luminous power being stripped is higher, serious fever inside ultraviolet glue body,
Simultaneously colloid cannot be transmitted in time it is heat sink in, cause accumulation of heat even burn optical device, ultraviolet glue long-term work is in height
Also apt to deteriorate and deformation under warm environment, will lose the effect of removal covering residual light after rotten, deformation can also generate optical fiber
Stress reduces fiber strength.
Invention content
It is an object of the invention to propose a kind of high-power fiber cladding light stripper, for being removed in superpower laser
Remaining harmful light in optical fiber inner cladding improves laser and exports quality, solves in the prior art because ultraviolet glue inner heat is serious,
The problem of causing accumulation of heat even to burn optical device.
Technical proposal that the invention solves the above-mentioned problems is：A kind of high-power fiber cladding light stripper, special character
It is,
Including shell and heat sink；
Through-hole is equipped in the shell；The both ends of through-hole are equipped with end cover, form closed vessel；
Filled with high refractive index solution in closed vessel；It is heat sink to be arranged in through-hole；
The optical fiber of cladding light to be divested is arranged in through-hole, and the both ends of optical fiber are worn from the end cover at shell both ends respectively
Go out, optical fiber immerses in high refractive index solution, and optical fiber is contacted with heat sink, described heat sink for radiating.
It is the basic structure of the present invention above, is based on the basic structure, the present invention also makes following Optimal improvements：
Further, above-mentioned high refractive index solution is alcohols and ketone liquid according to 1:1.5-1:The solution of 5 ratios mixing.
Further, above-mentioned heat sink interior equipped with V-groove, optical fiber is contacted with the wall surface of V-groove, realizes heat dissipation.
Further, the middle part of the optical fiber of the cladding light to be divested in through-hole is to eliminate coat and surrounding layer
Bare fibre, both ends are the original state optical fiber not dealt with；In order to make optical fiber preferably be contacted with heat sink, the middle part ruler of above-mentioned V-groove
The very little size less than both ends, bare fibre are located at the smaller middle part of V-groove size, and original state optical fiber is located at V-groove larger-size two
End, all contacts with two walls of V-groove, realizes good heat radiating.
Further, above-mentioned shell and it is heat sink use metal material.
Further, above-mentioned shell and heat sink use copper or aluminium are made.
Further, above-mentioned end cover is threadedly secured on shell.
Advantages of the present invention：
1, for the present invention using high refractive index liquid is filled in seal casinghousing, optical fiber is totally immersed in high refractive index liquid
In, efficiently divest the residual light transmitted in covering；
2, the high refractive index liquid that the present invention uses, heat resistance is strong, and can be come into full contact with heat sink, and thermal contact resistance is remote
Much smaller than ultraviolet glue, the heat that cladding light generates can be conducted to heat sink and shell in time, avoid the excessively high influence of local temperature
Remove the effect of inner cladding residual light；
3, the present invention removes residual light using high refractive liquid, and high refractive liquid will not generate stress because of temperature change,
Optical fiber structure intensity will not be reduced；
4, the present invention removes residual light using high refractive liquid, and high refractive liquid performance is stablized, is unlikely to deteriorate；
5, since under high power conditions, the regional temperature that doubly clad optical fiber divests residual light rises comparatively fast, in the present invention
It is heat sink that effectively optical fiber can be cooled down, avoid it from being damaged because of high temperature.The heat sink of the present invention is equipped with V-groove, ensures
So that optical fiber is contacted with heat sink, achievees the purpose that good heat radiating, and the middle part size of V-groove is less than the size at both ends, removes coating
It is contacted in the middle part of the bare fiber ends and V-groove of layer and surrounding layer, two end in contact of both ends original state optical fiber and V-groove are further protected
Card contacts optical fiber with heat sink, and good heat radiating is carried out to the optical fiber under high power environment.
Description of the drawings
Fig. 1 is the overall structure figure of high-power fiber cladding light stripper of the present invention；
Fig. 2 is the sectional view of high-power fiber cladding light stripper of the present invention；
Fig. 3 is the longitudinal cross-section view of high-power fiber cladding light stripper of the present invention；
Fig. 4 is the viewgraph of cross-section of high-power fiber cladding light stripper of the present invention；
Fig. 5 is the longitudinal cross-section view of shell；
Fig. 6 is heat sink stereogram.
Wherein, 1- shells；2- is heat sink；3- through-holes；4- end covers；5- high refractive index solution；6- optical fiber；7-V type grooves.
Specific implementation mode
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, it should be understood that preferred reality described herein
Apply example only for the purpose of illustrating and explaining the present invention and is not intended to limit the present invention.
Referring to Fig. 1-Fig. 4, a kind of high-power fiber cladding light stripper, including shell 1 and heat sink 2；It is set in the shell 1
There is through-hole 3；The both ends of through-hole 3 are equipped with end cover 4, form closed vessel；Filled with high refractive index solution in closed vessel
5；Heat sink 2 are arranged in through-hole 3；The optical fiber 6 of cladding light to be divested is arranged in through-hole 3, and the both ends of optical fiber 6 are respectively from shell 1
The end cover 4 at both ends is pierced by, and optical fiber 6 immerses in high refractive index solution 5, and optical fiber 6 is contacted with heat sink 2, and described heat sink 2 are used for
Heat dissipation.
The preferred high refractive index solution 5 of the present embodiment is alcohols and ketone liquid according to 1:1.5-1:5 ratios mix molten
Liquid.The refractive index of high refractive index liquid 5 is more than inner cladding refractive index, changes total reflection condition, reaches the mesh for divesting cladding light
's.High refractive index liquid specifically can select ethylene glycol and acetophenone according to 1:1.5 ratio is prepared or polyethylene glycol and third
Ketone is according to 1:3 ratio is prepared, and can also be n-butanol and methyl ethyl ketone according to 1:5 ratio is prepared.Height in the present invention
Refractive index liquid requires refractive index to be more than the refractive index of inner cladding, and performance is stablized between -5 DEG C to 90 DEG C, not golden with copper aluminium etc.
Category chemically reacts, and is not chemically reacted with optical fiber each section material.
V-groove 7 is equipped in heat sink 2, the middle part size of V-groove 7 is less than the size at both ends.Optical fiber includes successively from inside to outside
Light core, inner cladding, surrounding layer and coat.6 middle part of optical fiber in through-hole 3 eliminates the naked light of coat and surrounding layer
Fibre, both ends are the original state optical fiber not dealt with, and bare-fiber diameter is less than the diameter of original state optical fiber, in order to make optical fiber 6 preferably with
Heat sink contact, the middle part size of above-mentioned V-groove 7 are less than the size at both ends, and bare fibre is located at the smaller middle part of 7 size of V-groove, former
Shape optical fiber is located at 7 larger-size both ends of V-groove, is all contacted with two walls of V-groove 7, realizes good heat radiating.
After the high refractive index liquid 5 of inner cavity absorbs cladding light, temperature can rise, the material selection of shell 1 and heat sink 2
The good material of heat conduction can effectively reduce high refractive index liquid temperature.The present embodiment shell 1 and heat sink 2 preferred copper or aluminium etc.
Metal material is made.
End cover 4 is threadedly secured on shell 1.
Referring to Fig. 5,1 appearance of shell of the invention uses cube structure, convenient for putting and installing, the through-hole 3 in shell 1
Using rectangular opening, referring to Fig. 6, heat sink 2 is, using U-shaped structure, the inner surface heat sink 2 are arranged in V-groove 7, and heat sink 2 in through-hole 3
Interior to rotate, the appearance that shell 1 contacts heat sink 2 bottom surface is equipped with color or other labels, and when putting, label is face-down, in this way
Even if can guarantee that high refractive index solution 5 submerges optical fiber 6 if some leakage of high refractive index solution 5 or underfill through-hole 3.
Claims (7)
1. a kind of high-power fiber cladding light stripper, it is characterised in that：Including shell (1) and heat sink (2)；
Through-hole (3) is equipped in the shell (1)；The both ends of through-hole (3) are equipped with end cover (4), form closed vessel；
Filled with high refractive index solution (5) in closed vessel；Heat sink (2) setting is in through-hole (3)；
Optical fiber (6) setting of cladding light to be divested is in through-hole (3), and the both ends of optical fiber (6) are respectively from the sealing at shell (1) both ends
End cap (4) is pierced by, and optical fiber (6) is immersed in high refractive index solution (5), and optical fiber (6) is contacted with heat sink (2), described heat sink (2)
For radiating.
2. a kind of high-power fiber cladding light stripper according to claim 1, it is characterised in that：The high refractive index is molten
Liquid (5) is alcohols and ketone liquid according to 1:1.5-1:The solution of 5 ratios mixing.
3. a kind of high-power fiber cladding light stripper according to claim 1 or 2, it is characterised in that：Heat sink (2)
Interior to be equipped with V-groove (7), optical fiber (6) is contacted with the wall surface of V-groove (7).
4. a kind of high-power fiber cladding light stripper according to claim 3, it is characterised in that：In through-hole (3)
The middle part of optical fiber (6) of the cladding light to be divested be the bare fibre for eliminating coat and surrounding layer, both ends are not make to locate
The original state optical fiber of reason；The middle part size of the V-groove (7) is less than the size at both ends, and it is smaller that bare fibre is located at V-groove (7) size
Middle part, original state optical fiber is located at V-groove (7) larger-size both ends, contacted with two walls of V-groove (7).
5. a kind of high-power fiber cladding light stripper according to claim 4, it is characterised in that：The shell (1) and
Heat sink (2) use metal material.
6. a kind of high-power fiber cladding light stripper according to claim 5, it is characterised in that：The shell (1) and
Heat sink (2) are made of copper or aluminium.
7. a kind of high-power fiber cladding light stripper according to claim 6, it is characterised in that：The end cover
(4) it is threadedly secured on shell (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810240936.XA CN108346966A (en) | 2018-03-22 | 2018-03-22 | A kind of high-power fiber cladding light stripper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810240936.XA CN108346966A (en) | 2018-03-22 | 2018-03-22 | A kind of high-power fiber cladding light stripper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108346966A true CN108346966A (en) | 2018-07-31 |
Family
ID=62957701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810240936.XA Pending CN108346966A (en) | 2018-03-22 | 2018-03-22 | A kind of high-power fiber cladding light stripper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108346966A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676677A (en) * | 2019-10-14 | 2020-01-10 | 南昌航空大学 | Kilowatt-level cladding light stripper in optical fiber laser |
| CN113690722A (en) * | 2021-10-25 | 2021-11-23 | 中国工程物理研究院激光聚变研究中心 | Liquid cooling device of high-power optical fiber device |
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| US20070217738A1 (en) * | 2006-03-16 | 2007-09-20 | Northrop Grumman Corporation | System and method to remove light from cladding |
| US20160141826A1 (en) * | 2014-11-13 | 2016-05-19 | Bae Systems Information And Electronic Systems Integration Inc. | Liquid cladding for multiple clad fiber laser |
| CN105720464A (en) * | 2016-04-26 | 2016-06-29 | 中国科学院上海光学精密机械研究所 | Integral cooling device for rodlike optical fiber |
| CN105891941A (en) * | 2014-09-17 | 2016-08-24 | 方强 | Fiber cladding mode leakage method and device |
| CN107037538A (en) * | 2017-05-23 | 2017-08-11 | 广东工业大学 | A kind of fibre cladding power stripper and its manufacture method |
| CN208336801U (en) * | 2018-03-22 | 2019-01-04 | 中国科学院西安光学精密机械研究所 | A kind of high-power fiber cladding light stripper |
-
2018
- 2018-03-22 CN CN201810240936.XA patent/CN108346966A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070217738A1 (en) * | 2006-03-16 | 2007-09-20 | Northrop Grumman Corporation | System and method to remove light from cladding |
| CN105891941A (en) * | 2014-09-17 | 2016-08-24 | 方强 | Fiber cladding mode leakage method and device |
| US20160141826A1 (en) * | 2014-11-13 | 2016-05-19 | Bae Systems Information And Electronic Systems Integration Inc. | Liquid cladding for multiple clad fiber laser |
| CN105720464A (en) * | 2016-04-26 | 2016-06-29 | 中国科学院上海光学精密机械研究所 | Integral cooling device for rodlike optical fiber |
| CN107037538A (en) * | 2017-05-23 | 2017-08-11 | 广东工业大学 | A kind of fibre cladding power stripper and its manufacture method |
| CN208336801U (en) * | 2018-03-22 | 2019-01-04 | 中国科学院西安光学精密机械研究所 | A kind of high-power fiber cladding light stripper |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110676677A (en) * | 2019-10-14 | 2020-01-10 | 南昌航空大学 | Kilowatt-level cladding light stripper in optical fiber laser |
| CN113690722A (en) * | 2021-10-25 | 2021-11-23 | 中国工程物理研究院激光聚变研究中心 | Liquid cooling device of high-power optical fiber device |
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