CN109273971A - A kind of fibre cladding photospallation device and its cooling system - Google Patents
A kind of fibre cladding photospallation device and its cooling system Download PDFInfo
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- CN109273971A CN109273971A CN201811232372.1A CN201811232372A CN109273971A CN 109273971 A CN109273971 A CN 109273971A CN 201811232372 A CN201811232372 A CN 201811232372A CN 109273971 A CN109273971 A CN 109273971A
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- optical fiber
- cladding
- photospallation
- fibre cladding
- covering
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- 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
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- 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
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- 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
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Optics & Photonics (AREA)
- Optical Fibers, Optical Fiber Cores, And Optical Fiber Bundles (AREA)
Abstract
The present invention relates to a kind of fibre cladding photospallation device and its cooling systems.Fibre cladding photospallation device includes doubly clad optical fiber and the metal plate for placing doubly clad optical fiber, doubly clad optical fiber has a covering naked section for peeling off coat, metal plate is equipped with the special-shaped optical fiber duct for removing cladding light, covering naked section is set in special-shaped optical fiber duct, filled with refraction glue-line between special-shaped optical fiber duct and covering naked section, the refractive index for reflecting glue-line is incremented by successively along optical fiber axial direction.By filling the refractive index refraction glue-line incremented by successively along optical fiber axial direction between special-shaped optical fiber duct and covering naked section, high power cladding light can uniformly be removed along optical fiber axial direction, localized hyperthermia caused by avoiding because of removing heat aggregation, improves the maximum power for the cladding light that can be removed；The setting of the second curved optical fiber duct solves the problems, such as that small-bore angle covering photospallation is halfway.The stripper has high leakage ratio, structure and simple process, material and low manufacture cost.
Description
Technical field
The present invention relates to Fiber laser technology fields, and in particular to a kind of fibre cladding photospallation device and its cooling system.
Background technique
Currently, high power laser light output is mainly obtained in optical fiber laser using large mode field double clad gain fibre,
The inner cladding of doubly clad optical fiber is pure quartz medium, for transmitting high power pump light, Uniform Doped in fibre core in the course of work
Certain density rare earth ion absorbs pump light realization population inversion.On the one hand, gain fibre in high-capacity optical fiber laser
Length needs to select balance between pump absorption efficiency and light light conversion efficiency there are optimum value, therefore pump light cannot be by
It fully absorbs, in order not to adversely affect to backend application, residual pump light needs efficiently removing；On the other hand, high power
In optical fiber laser often because caused by welding problem core light escape into covering or a small amount of high-order mode laser and spontaneous radiation
Light overflows fibre core, can overflow the exciting light of fibre core using covering photospallation to improve laser beam quality；In addition, client uses
When high-capacity optical fiber laser, laser anti-the problem of throwing into optical fiber is often encountered, cladding light removes device to a certain degree
On can play feedback light buffer action.Therefore, the thorough of fibre cladding light removes to high-power fiber laser system very
It is important.
Currently, cladding light lift-off technology is mainly divided to two classes: the first is high refractive index glue cladding process, mainly for surrounding layer
Directly it is low-refraction coat optical fiber, i.e., one section of original coat is substituted using the coating adhesive of high index, reduces optical fiber
The covering numerical aperture (NA) for removing section, to realize covering photospallation；Second is fibre cladding surface-modification method, that is, is used
Certain surface treatment of the technique to fibre cladding, changes the angle firing angle of cladding light and covering outer surface, makes to travel to optical fiber packet
Diffusing reflection or diffusing transmission, such as the corrosion of Mechanical lithography, laser ablation, chemical reagent etc. occur for the layer outer surface time.
According to both the above cladding light lift-off technology, in order to realize that Homogeneouslly-radiating and efficiently removing, diffraction go out a variety of specific
Scheme:
The scheme coated using high refractive index glue: CN104297841A discloses a kind of double clad fiber cladding power removing
Device, the stripper are made by adjusting the refractive index for being coated on the outer coating adhesive of fibre cladding again along the incremental distribution of optical fiber axial direction
Cladding light by angular aperture size along optical fiber axial direction gradually, dispersion removing, This improves removing section heat accumulation the problem of,
Improve the power tolerance of Cladding Power Stripper.But through the test program, there are some problems, i.e., small in cladding light
The light of angular aperture is difficult to be stripped.
Using the modified scheme in fibre cladding surface: CN105204117A discloses a kind of high-power double cladding fibre cladding
Photospallation device device and production method corrode the last period covering at opposite taper, and taper covering increases all cladding lights and exists
The angle of covering outer surface transmits covering because being unsatisfactory for total reflection threshold value.Theoretically the program has very high leakage ratio, but
The problems in it is complex process, extent of corrosion is difficult to hold, while also will appear removing heat collection, it is not used to high power cladding light
Removing (although being provided with water cooling tube, water cooling tube take away only device entirety heat, can not concentrate a certain to optical fiber
Segment cools down.If a bit of as opposite taper corrosion section has very powerful light leakage, the conversion of these light in optical fiber
It is a bit of that this is all concentrated on for heat, then can not be passed quickly in water-cooled plate, so water cooling tube is difficult this section rapidly
Temperature reduces).
There are also some schemes for being used in mixed way above two lift-off technology: CN105068181A discloses a kind of optical fiber packet
Layer light stripper and preparation method thereof coats in covering and is left white one section between two sections of different refractivity glue, etches its surface, and first
The cladding light of section removing large aperture angle, remaining small-bore angle cladding light is through occurring diffusing reflection, hole when over etching section covering outer surface
Diameter angle changes, and is easier to be stripped when using at second segment coating, though this method improves remaining small-bore angle covering
The removing ratio of light.But because the angular aperture through over etching section cladding light is to change at random, a part of light aperture angle is unchanged
Greatly, it is not stripped when entering second segment coated segment, therefore still has the remaining small-bore angle cladding light of larger proportion that cannot be stripped,
And the degree that this kind of stripper etches during production is difficult to hold, heat causes easily in etching section aggregation when use
Localized hyperthermia.
Summary of the invention
The technical problem to be solved in the present invention is that: in view of the deficiencies of the prior art, provide a kind of fibre cladding photospallation
Device overcomes prior art small aperture angle covering photospallation to cause when being not thorough and remove high power cladding light because of heat aggregation
Localized hyperthermia the problem of.
Used technical solution is to solve above-mentioned technical problem: providing a kind of fibre cladding photospallation device, the light
Fine cladding light stripper includes the doubly clad optical fiber with coat, further includes: for placing the metal plate of doubly clad optical fiber；Institute
The covering naked section that doubly clad optical fiber peels off coat with one is stated, the metal plate is equipped with for removing the different of cladding light
Shape optical fiber duct, the covering naked section are set in the special-shaped optical fiber duct, fill out between the abnormity optical fiber duct and covering naked section
Filled with refraction glue-line, the refractive index of the refraction glue-line is incremented by successively along optical fiber axial direction；The abnormity optical fiber duct includes: for shelling
The first straight line optical fiber duct of cladding light from larger aperture angle and the second curved light of the cladding light for removing smaller aperture due angle
Fine slot.
Still more preferably scheme of the invention is: the refraction glue-line refractive index is greater than former coat refractive index.
Still more preferably scheme of the invention is: the covering naked section is divided into multiple sections, institute along its length
Metal plate is stated equipped with graduation mark, the graduation mark is used to the refraction glue of different refractivity accurately injecting corresponding section
It is interior.
The present invention also provides a kind of fibre cladding photospallation device cooling system, the fibre cladding photospallation device cooling system
Including cooling device and fibre cladding photospallation device described above, the fibre cladding photospallation device fitting is set to described cold
But on device.
Still more preferably scheme of the invention is: the cooling device includes air-cooled case and heat-conducting silicone grease, described to lead
Hot silicone grease is for metal plate and air-cooled case to be bonded.
Still more preferably scheme of the invention is: the cooling device includes water-cooled plate, and the metal plate fits in institute
It states in water-cooled plate.
Still more preferably scheme of the invention is: the fibre cladding photospallation device is one or more, multiple optical fiber
Cladding light stripper is serially set on cooling device.
Still more preferably scheme of the invention is: the metal plate of multiple fibre cladding photospallation devices be arranged side by side in
On cooling device, the doubly clad optical fiber is serially set in the special-shaped optical fiber duct of metal plate.
The beneficial effects of the present invention are by being arranged the abnormity including first straight line optical fiber duct and the second curved optical fiber duct
Optical fiber duct fills the refractive index refraction glue-line incremented by successively along optical fiber axial direction between special-shaped optical fiber duct and covering naked section, can
High power cladding light is uniformly removed along optical fiber axial direction, localized hyperthermia caused by avoiding because of removing heat aggregation, improving can shell
From cladding light maximum power；Meanwhile second the setting of curved optical fiber duct can increase the hole of the unstripped cladding light of leading portion
Diameter angle reveals it all, solves the problems, such as that small-bore angle covering photospallation is halfway.The fibre cladding photospallation device will wrap
Layer light is uniformly removed from large aperture angle to small-bore angle along optical fiber axial direction, can be to avoid because of part caused by removing heat aggregation
High temperature solves the problems, such as that small-bore angle covering photospallation is halfway, has high leakage ratio, structure and simple process, material
Material and low manufacture cost；And the cooling device of setting is bonded with fibre cladding photospallation device, then it further perfectly solves
Heat collection neutralizes the problem of heat diffusion, is suitable for producing in enormous quantities and applying.
Detailed description of the invention
Present invention will be further explained below with reference to the attached drawings and examples, in attached drawing:
Fig. 1 is the structural schematic diagram of fibre cladding photospallation device of the present invention；
Fig. 2 is the partial enlargement structural representation of A in Fig. 1；
Fig. 3 is the three-dimensional knot of fibre cladding photospallation device cooling system of the present invention (comprising multiple fibre cladding photospallation devices)
Structure schematic diagram.
Specific embodiment
Now in conjunction with attached drawing, elaborate to presently preferred embodiments of the present invention.
As shown in Figure 1 and Figure 2, the fibre cladding photospallation device includes the doubly clad optical fiber 10 with coat, is also wrapped
It includes: for placing the metal plate 20 of doubly clad optical fiber 10；The doubly clad optical fiber 10 has a covering for peeling off former coat
Naked section 101, the metal plate 20 are equipped with the special-shaped optical fiber duct 30 for removing cladding light, and the covering naked section 101 is set
In in the special-shaped optical fiber duct 30, refraction glue-line, the folding are filled between the abnormity optical fiber duct 30 and covering naked section 101
The refractive index of injection layer is incremented by successively along optical fiber axial direction.Further, the special-shaped optical fiber duct 30 includes: for removing large hole
The first straight line optical fiber duct 31 of the cladding light at diameter angle and the second curved optical fiber duct 32 of the cladding light for removing smaller aperture due angle.
The doubly clad optical fiber includes fibre core, covering and coat.Fibre cladding photospallation device of the present invention utilizes adjusting optical fiber packet
The refractive index of the outer coating adhesive of layer is distributed along the axial direction of optical fiber, makes high-power cladding light from large aperture angle to small-bore angle along optical fiber
Axial uniformly removing, greatly improves the power tolerance of the stripper.The fibre cladding photospallation device is divided into two steps
Cladding light is removed, the first step carries out phased separation to the cladding light at larger aperture angle, and second step is not peeled off leading portion
, the cladding light at remaining smaller aperture due angle carry out phased separation.Come in fact specifically special-shaped optical fiber duct 30 is divided into two sections
Existing, the cladding light at larger aperture angle is carried out phased separation by leading portion, that is, first straight line optical fiber duct 31；The curved optical fiber of back segment i.e. second
Slot 32 increases the angular aperture of the unstripped cladding light of leading portion using bends, reveals it all.Wherein, the metal plate 20
It can be using copper, iron, aluminium etc..
By the way that special-shaped optical fiber duct 30 is arranged on metal plate 20, the abnormity optical fiber duct 30 includes first straight line optical fiber duct 31
With the second curved optical fiber duct 32, between special-shaped optical fiber duct 30 and covering naked section 101 fill refractive index along optical fiber axial direction successively
Incremental refraction glue-line uniformly removes high power cladding light along optical fiber axial direction, part caused by avoiding because of removing heat aggregation
High temperature improves the maximum power for the cladding light that can be removed；In the first straight line optical fiber duct 31 to the covering at larger aperture angle
After light carries out phased separation, the bends of the second curved optical fiber duct 32 can increase the hole of the unstripped cladding light of leading portion
Diameter angle reveals it all, solves the problems, such as that small-bore angle covering photospallation is halfway.The fibre cladding photospallation device can be with
Cladding light is uniformly removed from large aperture angle to small-bore angle along optical fiber axial direction, can to avoid because removing heat aggregation caused by
Localized hyperthermia, while also solving the problems, such as that small-bore angle covering photospallation is halfway, there is high leakage ratio, structure and work
Skill is simple, material and low manufacture cost, is suitable for producing in enormous quantities.
Specifically, the doubly clad optical fiber 10 includes the covering naked section 101 and two for removing former coat and being only left covering
Complete segment is held, covering naked section 101 is completely disposed in special-shaped optical fiber duct 30, and both ends complete segment, which has, a bit of is placed in special-shaped optical fiber
In slot 30.It is two sections that special-shaped optical fiber duct 30 on metal plate 20, which is divided to: leading portion is straightway, i.e. first straight line optical fiber duct 31,
Back segment is curved section, i.e., the second curved optical fiber duct 32.
The structure of optical fiber from inside to outside, including fibre core, covering and coat.If fiber core refractive index is n0, cladding index
For n1, former coat refractive index is n2.Laser will be in a fiber by that must meet: n0> n1；Cladding light will leak out must be full
Foot: n1< n2。
Wherein, refractive index refraction glue incremented by successively is filled between special-shaped optical fiber duct 30 and covering naked section 101, is formed
Glue-line is reflected, the refraction glue-line refractive index is greater than former coat refractive index, is less than cladding index.In the present embodiment, institute
It states refraction glue-line to be made of multistage refraction glue, the requirement of the refractive index of the multistage refraction glue is as follows:
If the refractive index of the first segment of straightway is ni, the refractive index of second segment is ni+1... incremented by successively, most back segment
For ni+m, then ni+m> ni> n2> n1, i.e. niGreater than former coat refractive index n2, ni+mGreater than cladding index n1；
If the refractive index of the first segment of curved section is nj, the refractive index of second segment is nj+1... incremented by successively, most back segment
For nj+n, then nj+n> nj> n2> n1, i.e. njGreater than former coat refractive index n2, nj+nGreater than cladding index n1。
From straightway to curved section, it is described refraction glue-line refractive index be it is incremented by successively, therefore, nj+n> nj> ni+m>
ni> n2> n1。
Wherein, the covering naked section 101 is divided into multiple sections, the multiple section and the multistage along its length
It is corresponding to reflect glue.The metal plate 20 is equipped with graduation mark 21, and the graduation mark 21 is used for the refraction glue of different refractivity
It accurately injects in corresponding section.
Leading portion first straight line optical fiber duct 31, the cladding light of the larger aperture for removing, by the folding for adjusting refraction glue-line
Rate is penetrated along axial incremental distribution, changes the numerical aperture NA of removing section optical fiber, makes the numerical aperture NA of removing section optical fiber gradually
It is reduced to 0, heat aggregation can be avoided by cladding light along the uniform phased separation of optical fiber axial direction.But the covering at small-bore angle
Light is but difficult to remove in this section, transmits covering, and the cladding light of the removing of the part accounts for about the 98% of general power.Specifically remove
Principle is as follows:
If cladding index is n1, former coat refractive index is n2, then the numerical aperture for the light that can be propagated in fibre cladding
The range of diameter NA are as follows:
Remove former coat, it is n that first segment, which coats refractive index,iFolding rate glue, then can continue to propagate in fibre cladding
Light numerical aperture NA range are as follows:
Therefore the covering optical numerical aperture NA that first segment is strippedi' range are as follows:
Similarly, the covering optical numerical aperture NA that second segment is strippedi+1' range are as follows:
Therefore, by adjusting the refractive index of each section of coating adhesive, the optical power ratio that can control the segment to remove makes heat
Along fiber axis direction it is every it is a bit of on evenly distribute, avoid heat concentrate caused by localized hyperthermia.
The curved optical fiber duct 32 of back segment second, for removing the cladding light at smaller aperture due that leading portion is not peeled off, remaining angle,
The part about only accounts for the 2% of general power.Back segment optical fiber duct is changed to curved, i.e., will to be placed in optical fiber duct fibre-optical bending, it is small
Angular aperture becomes larger when angular aperture cladding light enters curved optical fiber, all transmits when being transferred to cladding surface because being unsatisfactory for total reflection
Covering out will thoroughly be removed at the small-bore angle of the extremely difficult removing of leading portion.The principle specifically removed is as follows:
If fiber core refractive index is n0, cladding index n1, former coat refractive index is n2, remove former coat, coating folding
Penetrating rate is njFolding rate glue, fiber bending radius ρ, fiber core radius α, cladding radius b, incidence at distance center wheelbase from
For h；
The numerical aperture NA for the light propagated in fibre core can then be continued when fibre-optical bending0Range are as follows:
It can continue the numerical aperture NA for the light propagated in covering1Range are as follows:
The value for adjusting fiber bending radius ρ, so that NA0Level off to 0, i.e., the pump light propagated in fibre core can be transmitted all
It is propagated into covering；Similarly, it is all leaked out when the pump light being transmitted in covering is using covering outer surface.
Based on principle described above and method, which can be completely exfoliated the cladding light at small-bore angle.
When removing to cladding light, the first straight line optical fiber duct 31 and the second curved optical fiber duct 32 cooperate,
Make fibre cladding photospallation device that there is high total leakage ratio, while can significantly promote removing general power in certain size.
Under the premise of covering naked section 101 coats refractive index refraction glue-line incremented by successively, if setting without the second curved optical fiber duct 32
It sets, optical fiber all linearly settings can only then remove the cladding light of bigger numerical aperture, the packet of some small value aperture
Layer light is difficult to be stripped；If the setting without first straight line optical fiber duct 31, optical fiber is all curved or curved setting, then can be to all
The angular aperture of cladding light generates change, so that all cladding lights (including large aperture angle cladding light and small-bore angle cladding light) exist
Bending section leakage will lead to a large amount of heat when removing relatively high power or high power cladding light and concentrate in bending section.And this hair
The stripping means of the bright fibre cladding photospallation device only changes the covering at small-bore angle that leading portion is not peeled off, remaining
Light reveals the cladding light at small-bore angle in bending section, therefore, when removing high power cladding light, will not cause a large amount of heat
Amount is concentrated in knee, while to cladding light, especially small-bore angle cladding light is thoroughly removed, is also avoided because of removing heat
Localized hyperthermia caused by amount is assembled has high leakage ratio, structure and simple process.
As shown in figure 3, the present invention also provides a kind of fibre cladding photospallation device cooling systems.The fibre cladding photospallation
Device cooling system includes cooling device and above-described fibre cladding photospallation device, and the fibre cladding photospallation device fitting is set
It is placed on the cooling device.
As the preferred embodiment of cooling device, the cooling device includes air-cooled case and heat-conducting silicone grease, described thermally conductive
Silicone grease is for metal plate 20 and air-cooled case to be bonded.
As another preferred embodiment of cooling device, the cooling device includes water-cooled plate 40, and the metal plate 20 pastes
Together in the water-cooled plate 40.
It, can be direct by the metal plate 20 of fibre cladding photospallation device with heat-conducting silicone grease when removing the cladding light of lower-wattage
It is fitted closely with the air-cooled case of laser；Metal plate 20 can be bonded by if desired fast cooling with water-cooled plate, cold using recycling
Water takes away the heat on metal plate 20.
Further, the fibre cladding photospallation device is one or more, and multiple fibre cladding photospallation devices are serially set
It is placed on cooling device.The metal plate 20 of multiple fibre cladding photospallation devices is arranged side by side on cooling device, described double
Cladded-fiber 10 is serially set in the special-shaped optical fiber duct 30 of metal plate 20.
When removing the cladding light of higher power, multiple fibre cladding photospallation devices can serially be spliced, be readjusted every
Coated on block metal plate 20 refraction glue index distribution, make cladding light gradually, the removing of block-by-block, heat is averagely distributed to
On different metal plates 20.
The fibre cladding photospallation device cooling system is bonded the cooling device of setting with fibre cladding photospallation device, then
Further perfectly solve the problems, such as that heat collection neutralizes heat diffusion, structure and simple process, material and low manufacture cost,
Suitable for producing in enormous quantities and applying.
In practical applications, specific embodiment is seen below:
Embodiment one:
When using 10/130 doubly clad optical fiber removing 10W cladding light.First built using Trace Pro (optical simulation software)
Mould adjusts the refractive index of the refraction glue per a bit of coating, the corresponding photospallation ratio of the segment is tracked, when leading portion first straight line
Refractive index is distributed in optical fiber duct 31 are as follows: and 1.413,1.428,1.437,1.445,1.452,1.46, the curved optical fiber duct of back segment second
In 32 when index distribution 1.452,1.46, corresponding photospallation ratio are as follows: 18%, 19%, 16%, 17%, 18%, 10%,
2%, 1%.Photospallation device is made with reference to the result, the surface size of the photospallation section of actual fabrication is 10*30mm, with every segment
The above index distribution coating refraction glue of 3mm long-pressing, experiments verify that, the overburden ratio of the photospallation device can reach 100%, and device
Part is maintained at long-term stable work in 40 DEG C in each local temperature.
Embodiment two:
When removing 80W cladding light using 25/400 doubly clad optical fiber.When refractive index point in leading portion first straight line optical fiber duct 31
Cloth are as follows: 1.388,1.401,1.409,1.420,1.428,1.431,1.434,1.437,1.439,1.445,1.452,1.46,
When refractive index is distributed as 1.445,1.452,1.46 in the curved optical fiber duct 32 of back segment second, the corresponding photospallation ratio of modeling result
Are as follows: 6%, 7.6%, 8.4%, 8.8%, 7.4%, 8.2%, 10%, 8.7%, 10.2%, 8.5%, 8/7%, 1%, 2%,
1%, 0%.Photospallation device is made with reference to the result, the surface size of the photospallation section of actual fabrication is 20*200mm, with every small
Section 10mm variations in refractive index coating adhesive.Experiments verify that when the photospallation device removes 80W cladding light, when long under water cooling environment
Between steady operation, and cladding light overburden ratio reaches 99%.
Embodiment three:
When two pieces of photospallation devices are used in series, the coating adhesive refractive index of each 15 segment on two pieces of photospallation devices is adjusted, the
One piece of refractive index is incremented to 1.434 from 1.388, and second piece of refractive index is incremented to 1.46 from 1.434, keeps removing power uniform
It is distributed in per a bit of.The parameter of reference model makes the photospallation device of two surface size 20*200mm, with every segment 10mm
Variations in refractive index coating adhesive, when removing 160W under verified water cooling environment, each local temperature of device long-time stable in 40 DEG C
Work, overburden ratio reach 99%.
Example IV:
When being used in series three pieces of strippers according to three the methods of practical citing, the index distribution for deploying coating adhesive is let out
Reveal 240W cladding light, verified, leakage ratio equally can reach 99%.
Based on scheme of the invention described above, it will be understood by those skilled in the art that if continuing growing concatenated stripper
Number, guarantee leakage than when, theoretically strippable covering optical power is up to kilowatt rank.
It should be understood that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations, to ability
It for field technique personnel, can modify to technical solution illustrated in the above embodiments, or special to part of technology
Sign is equivalently replaced；And all such modifications and replacement, it should all belong to the protection domain of appended claims of the present invention.
Claims (8)
1. a kind of fibre cladding photospallation device, including the doubly clad optical fiber with coat, which is characterized in that further include: it is used for
Place the metal plate of doubly clad optical fiber；The doubly clad optical fiber has a covering naked section for peeling off coat, the metal
Plate is equipped with the special-shaped optical fiber duct for removing cladding light, and the covering naked section is set in the special-shaped optical fiber duct, described different
Filled with refraction glue-line between shape optical fiber duct and covering naked section, the refractive index of the refraction glue-line is successively passed along optical fiber axial direction
Increase；
The abnormity optical fiber duct include: first straight line optical fiber duct for removing the cladding light at larger aperture angle and for remove compared with
The curved optical fiber duct of the second of the cladding light at small-bore angle.
2. fibre cladding photospallation device according to claim 1, which is characterized in that the refraction glue-line refractive index is greater than original
Coat refractive index.
3. fibre cladding photospallation device according to claim 1, which is characterized in that the covering naked section is square along its length
To multiple sections are divided into, the metal plate is equipped with graduation mark, and the graduation mark is used for the refraction glue of different refractivity is accurate
The corresponding section of injection in.
4. a kind of fibre cladding photospallation device cooling system, which is characterized in that including cooling device and any institute of claim 1-3
The fibre cladding photospallation device stated, the fibre cladding photospallation device fitting are set on the cooling device.
5. fibre cladding photospallation device cooling system according to claim 4, which is characterized in that the cooling device includes
Air-cooled case and heat-conducting silicone grease, the heat-conducting silicone grease is for metal plate and air-cooled case to be bonded.
6. fibre cladding photospallation device cooling system according to claim 4, which is characterized in that the cooling device includes
Water-cooled plate, the metal plate fit in the water-cooled plate.
7. fibre cladding photospallation device cooling system according to claim 4, which is characterized in that the fibre cladding light stripping
It is one or more from device, multiple fibre cladding photospallation devices are serially set on cooling device.
8. fibre cladding photospallation device cooling system according to claim 7, which is characterized in that multiple fibre claddings
The metal plate of photospallation device is arranged side by side on cooling device, and the doubly clad optical fiber is serially set to the special-shaped optical fiber of metal plate
In slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811232372.1A CN109273971A (en) | 2018-10-22 | 2018-10-22 | A kind of fibre cladding photospallation device and its cooling system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811232372.1A CN109273971A (en) | 2018-10-22 | 2018-10-22 | A kind of fibre cladding photospallation device and its cooling system |
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