CN208336801U - A kind of high-power fiber cladding light stripper - Google Patents
A kind of high-power fiber cladding light stripper Download PDFInfo
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- CN208336801U CN208336801U CN201820397251.1U CN201820397251U CN208336801U CN 208336801 U CN208336801 U CN 208336801U CN 201820397251 U CN201820397251 U CN 201820397251U CN 208336801 U CN208336801 U CN 208336801U
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- optical fiber
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Abstract
The utility model belongs to optical fiber laser field, is related to a kind of high-power fiber cladding light stripper.The problem of the utility model solves in the prior art because ultraviolet glue inner heat is serious, and accumulation of heat is caused even to burn optical device.The utility model 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 cavity；Filled with high refractive index solution in closed cavity；It is heat sink to be arranged in through-hole；The optical fiber of cladding light to be stripped 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；The refractive index of high refractive index solution is greater than the refractive index of optical fiber inner cladding.
Description
Technical field
The utility model belongs to optical fiber laser field, is related to a kind of high-power fiber cladding light stripper.
Background technique
Optical fiber laser has many advantages, such as good beam quality, high-efficient, structure is simple, 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 manufacture.
Doubly clad optical fiber is the core of high-capacity optical fiber laser, and high power optical fibre laser pumps in generating and amplifying
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 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 enter in covering from fibre core.This
The light remained in covering a bit 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 strips.
Currently, removal inner cladding residual light most popular method is to strip the coat of doubly clad optical fiber and surrounding layer, directly
It connects and coats ultraviolet glue on the outside of inner cladding.The refractive index of ultraviolet glue is higher than inner cladding, and the light transmitted in inner cladding is due to that can not expire
Sufficient total reflection condition and be refracted into high refractive index colloid, to play the role of stripping 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 can generate heat in the case of high power, when the covering optical power being stripped is higher, serious fever inside ultraviolet glue body,
Colloid cannot be transmitted in heat sink in time simultaneously, cause accumulation of heat even to 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.
Summary of the invention
The purpose of this utility model is that a kind of high-power fiber cladding light stripper is proposed, in superpower laser
Remaining harmful light in optical fiber inner cladding is removed, laser is improved and exports quality, solve in the prior art because of ultraviolet glue inner heat
Seriously, the problem of causing accumulation of heat even to burn optical device.
The technical solution that the utility model solves the above problems is: a kind of high-power fiber cladding light stripper, special
Place 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 cavity；
Filled with high refractive index solution in closed cavity；It is heat sink to be arranged in through-hole；
The optical fiber of cladding light to be stripped is arranged in through-hole, and the both ends of optical fiber are worn from the end cover at shell both ends respectively
Out, optical fiber immerses in high refractive index solution, and optical fiber is contacted with heat sink, described heat sink for radiating；The high refractive index solution
Refractive index be greater than optical fiber inner cladding refractive index.
The above are the basic structures of the utility model, are based on the basic structure, and the utility model is also made following optimization and changed
Into:
Further, above-mentioned high refractive index solution is the solution that alcohols and ketone liquid are mixed according to 1:1.5-1:5 ratio.
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 stripped 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 contact optical fiber preferably 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 lesser 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.
The advantages of the utility model:
1, for the utility model using high refractive index solution is filled in seal casinghousing, it is molten that optical fiber is totally immersed in high refractive index
In liquid, the residual light transmitted in covering is efficiently stripped；
2, the high refractive index solution that the utility model uses, heat resistance is strong, and can come into full contact with heat sink, contact heat
Resistance is far smaller than ultraviolet glue, and the heat that cladding light generates can be conducted to heat sink and shell in time, avoid local temperature excessively high
Influence the effect of removal inner cladding residual light；
3, the utility model removes residual light using high refractive index solution, and high refractive index solution will not be produced because of temperature change
Raw stress, will not reduce optical fiber structure intensity；
4, the utility model removes residual light using high refractive index solution, and high refractive index solution property is stablized, is unlikely to deteriorate；
5, since under high power conditions, the regional temperature that doubly clad optical fiber strips residual light rises very fast, the utility model
In it is heat sink effectively optical fiber can be cooled down, avoid it from damaging because of high temperature.The heat sink of the utility model is equipped with V-type
Slot, guarantee contact optical fiber with heat sink, achieve the purpose that good heat radiating, and the middle part size of V-groove is less than the size at both ends, goes
Fall and is contacted in the middle part of the bare fiber ends and V-groove of coat and surrounding layer, two end in contact of both ends original state optical fiber and V-groove, into
The guarantee of one step contacts optical fiber with heat sink, carries out good heat radiating to the optical fiber under high power environment.
Detailed description of the invention
Fig. 1 is the overall structure figure of the utility model high-power fiber cladding light stripper；
Fig. 2 is the cross-sectional view of the utility model high-power fiber cladding light stripper；
Fig. 3 is the longitudinal cross-section view of the utility model high-power fiber cladding light stripper；
Fig. 4 is the viewgraph of cross-section of the utility model high-power fiber cladding light stripper；
Fig. 5 is the longitudinal cross-section view of shell；
Fig. 6 is heat sink perspective view.
Wherein, 1- shell；2- is heat sink；3- through-hole；4- end cover；5- high refractive index solution；6- optical fiber；7-V type groove.
Specific embodiment
It is illustrated below in conjunction with preferred embodiment of the attached drawing to the utility model, it should be understood that described herein excellent
It selects embodiment to be only used for describing and explaining the present invention, is not used to limit the utility model.
Referring to figures 1-4, 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 cavity；Filled with high refractive index solution 5 in through-hole 3；It is heat sink
2 are arranged in through-hole 3；The optical fiber 6 of cladding light to be stripped is arranged in through-hole 3, and the both ends of optical fiber 6 are respectively from 1 both ends of shell
End cover 4 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 for radiating.
It is molten that the preferred high refractive index solution 5 of the present embodiment is that alcohols and ketone liquid are mixed according to 1:1.5-1:5 ratio
Liquid.The refractive index of high refractive index solution 5 is greater than inner cladding refractive index, changes total reflection condition, reaches the mesh for stripping cladding light
's.High refractive index solution can specifically select ethylene glycol and acetophenone according to the ratio preparation of 1:1.5 or polyethylene glycol and third
Ketone is prepared according to the ratio of 1:3, can also be that n-butanol and methyl ethyl ketone are prepared according to the ratio of 1:5.In the utility model
High refractive index solution require refractive index be greater than inner cladding refractive index, between -5 DEG C to 90 DEG C performance stablize, not with copper aluminium
Equal metals chemically react, and do not chemically react 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 successively includes from inside to outside
Light core, inner cladding, surrounding layer and coat.The naked light of coat and surrounding layer is eliminated in the middle part of the optical fiber 6 in through-hole 3
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 lesser middle part of 7 size of V-groove, former
Shape optical fiber is located at the larger-size both ends of V-groove 7, all contacts with two walls of V-groove 7, realizes good heat radiating.
After the absorption cladding light of high refractive index solution 5 of inner cavity, temperature can rise, the material selection of shell 1 and heat sink 2
Thermally conductive good material, can be effectively reduced high refractive index solution 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 utility model uses cube structure, convenient for putting and installing, in shell 1
Through-hole 3 uses rectangular opening, and referring to Fig. 6, heat sink 2 is using U-shaped structures, and V type groove 7 is arranged in heat sink 2 inner surface, heat sink 2
It not can rotate in through-hole 3, 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,
Accordingly even when some leakage of high refractive index solution 5 or underfill through-hole 3, also can guarantee that high refractive index solution 5 submerges light
Fibre 6.
Claims (6)
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) are equipped in the shell (1)；The both ends of through-hole (3) are equipped with end cover (4), form closed cavity, closed
Cavity in filled with high refractive index solution (5)；Heat sink (2) setting is in through-hole (3)；
Optical fiber (6) setting of cladding light to be stripped 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；
The refractive index of the high refractive index solution (5) is greater than the refractive index of optical fiber (6) inner cladding.
2. a kind of high-power fiber cladding light stripper according to claim 1, it is characterised in that: in heat sink (2)
Equipped with V-groove (7), optical fiber (6) is contacted with the wall surface of V-groove (7).
3. a kind of high-power fiber cladding light stripper according to claim 2, it is characterised in that: be located in through-hole (3)
The middle part of the optical fiber (6) of cladding light to be stripped is the bare fibre for eliminating coat and surrounding layer, and both ends are the original not dealt with
Shape optical fiber；The middle part size of the V-groove (7) is less than the size at both ends, and bare fibre is located at V-groove (7) lesser middle part of size,
Original state optical fiber is located at V-groove (7) larger-size both ends, contacts with two walls of V-groove (7).
4. a kind of high-power fiber cladding light stripper according to claim 1 to 3, it is characterised in that: the shell
(1) and heat sink (2) use metal material.
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) are made of copper or aluminium.
6. a kind of high-power fiber cladding light stripper according to claim 5, 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 |
|---|---|---|---|
| CN201820397251.1U CN208336801U (en) | 2018-03-22 | 2018-03-22 | A kind of high-power fiber cladding light stripper |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820397251.1U CN208336801U (en) | 2018-03-22 | 2018-03-22 | A kind of high-power fiber cladding light stripper |
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| Publication Number | Publication Date |
|---|---|
| CN208336801U true CN208336801U (en) | 2019-01-04 |
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| CN201820397251.1U Active CN208336801U (en) | 2018-03-22 | 2018-03-22 | A kind of high-power fiber cladding light stripper |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346966A (en) * | 2018-03-22 | 2018-07-31 | 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 CN201820397251.1U patent/CN208336801U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108346966A (en) * | 2018-03-22 | 2018-07-31 | 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 |
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