CN208241073U - Optical fiber cladding optical power stripping device - Google Patents
Optical fiber cladding optical power stripping device Download PDFInfo
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- CN208241073U CN208241073U CN201820922266.5U CN201820922266U CN208241073U CN 208241073 U CN208241073 U CN 208241073U CN 201820922266 U CN201820922266 U CN 201820922266U CN 208241073 U CN208241073 U CN 208241073U
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Abstract
An optical fiber cladding optical power stripping device and a stripping method relate to the field of laser and solve the problems that the existing cladding optical power stripping device can increase the additional loss of a laser, the mechanical performance of an optical fiber is reduced, and the air heat-conducting performance is poor. The stripping device comprises an optical fiber sleeve and a double-clad optical fiber placed in the optical fiber sleeve; the double-clad optical fiber penetrates through the sealing port, and the sealing port is sealed by sealant; the cladding light leakage portion in the optical fiber ferrule is suspended in the gas channel with the coating layer and the outer cladding removed. The gas channel is filled with scattering gas, the scattering gas circulates in the gas channel, the scattering gas contains scattering particles, the moving scattering particles are contacted with the cladding light leakage part and scatter the cladding light, and the scattered cladding light is absorbed by the light absorption layer in the optical fiber sleeve to achieve the purpose of stripping the optical power of the optical fiber cladding. The utility model discloses do not destroy double-clad optic fibre, air heat conductivility is good, has good covering light and strips and the radiating effect.
Description
Technical field
The utility model relates to laser technology fields, more particularly to a kind of fibre cladding optical power device for stripping.
Background technique
Optical fiber laser has the characteristics that good beam quality, output power are high, small in size, low in energy consumption, the service life is long, in metal
The fields such as cutting, welding, punching, the marking of material are widely applied.Especially high-capacity optical fiber laser, output work
Rate cumulative year after year, single fiber output have been over 1 myriawatt.In optical fiber laser or fiber amplifier, have in laser output
Unabsorbed pump light and higher order mode laser in inner cladding is leaked into, they together constitute the packet transmitted in inner cladding
Layer light.In high power jointed fiber laser, amplifier and high power pulse optical fiber laser, amplifier, covering optical power
It can be more than 200 watts, this brings great threat to follow-up work device, and can burn subsequent device makes laser can not work
Make, while reducing the beam quality of output laser.
Currently, there are two ways to cladding light being filtered out, be generallyd use using covering optical power device for stripping, first is that
High-index material is pasted outside the inner cladding of doubly clad optical fiber, cladding light is exported from high-index material, such as discloses
A kind of double clad fiber cladding power stripper disclosed in Chinese patent number for CN104297841 A, existing for this method
Problem is: the high-index material being covered in outside inner cladding can absorb cladding light and increase its temperature, optical fiber and high refractive index
The difference of material thermal expansion coefficient will cause optical fiber micro-bending, and the added losses of optical fiber laser, amplifier are consequently formed.Second is that
Etch sulculus on the inner cladding of doubly clad optical fiber, or paste granular material on inner cladding, cladding light by sulculus or
Bulk material is scattered and is exported, such as a kind of Cladding Power Stripper disclosed in Publication No. CN107069393 A Chinese patent
And optical fiber laser, this method the problem is that: destroy inner cladding structure, decline its mechanical performance, and optical fiber
It is suspended from airtight cavity, air conduction is poor, and optical fiber surface heat is made to be difficult to pass.
Utility model content
In order to solve that the added losses and light of laser may be will increase existing for existing covering optical power device for stripping
Fine mechanical performance reduces, the problem of air conduction performance difference, and the utility model provides a kind of fibre cladding optical power device for stripping.
Used technical solution is as follows in order to solve the technical problem for the utility model:
A kind of fibre cladding optical power device for stripping of the utility model, including doubly clad optical fiber, the doubly clad optical fiber
Middle section be cladding light leak part, further include ferrule, the doubly clad optical fiber is placed in ferrule；
The ferrule includes shell, setting light-absorption layer inside the housing, by light-absorption layer is divided interior of shell
At gas passage and water-cooling channel, be uniformly arranged on the left of shell on circular cross section and be connected with water-cooling channel four
A water inlet is uniformly arranged on four water outlets being connected on the circular cross section of shell right side and with water-cooling channel, is uniform
Be arranged on shell left circles shape cross section and with two air inlets that gas passage is connected, be uniformly arranged on the right side of shell
Two gas outlets on circular cross section and being connected with gas passage, setting are at left and right sides of the shell among circular cross section
Position and the seal being connected with gas passage；
The doubly clad optical fiber passes through the seal of the left and right sides, and the seal is sealed with sealant and by double clad light
Fibre is fixed, and cladding light leakage part is suspended from gas passage；
Full of scattering gas in the gas passage, the scattering gas is by air inlet, gas outlet in gas passage
Circulation；
Cooling water is full of in the water-cooling channel, the cooling water is recycled in water-cooling channel by water inlet, water outlet.
Further, the light-absorption layer crack down evil force using surface and be made with the metal of coarse processing.
Further, the ferrule is made of heat-conducting metal.
Further, the middle section of doubly clad optical fiber is removed into coat and surrounding layer, naked leakage inner cladding is as packet
Layer light leaks part.
Further, contain scattering particles in the scattering gas, the scattering gas is in nitrogen or inert gas
It is one or more.
Further, the size of the scattering particles is 50~500 μm.
Further, the scattering particles is selected from one of titanium dioxide, aluminum oxide or graphite or a variety of.
Further, the temperature of the cooling water is 20 degree.
The beneficial effects of the utility model are: the utility model proposes a kind of fibre cladding optical power device for stripping and stripping
Method filters out fibre cladding light as light scattering elements using the particulate matter in gas, is flowed by gas and carries out heat transfer
Optical fiber heat dissipation is helped, achievees the purpose that covering optical power strips with this.
It is compared with the prior art, the utility model has the advantages that
1) the utility model is not required to destroy optical fiber inner cladding structure, remains with the original mechanical strength of optical fiber, the course of work
In be hardly damaged.
2) the utility model carries out heat transfer using the scattering particles that flowing gas drives, and has preferably heat dissipation effect
Fruit can work under high power conditions.
3) in the utility model, any material is not pasted outside inner cladding, can reduce fiber microbending loss, improves output
The beam quality of laser.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of fibre cladding optical power device for stripping of the utility model.
Fig. 2 is sectional view of the fibre cladding optical power device for stripping from air inlet side.
In figure: 1, doubly clad optical fiber, 101, cladding light leakage part, 2, ferrule, 201, light-absorption layer, 202, scattering gas
Body, 203, gas passage, 204, air inlet, 205, gas outlet, 206, cooling water, 207, water-cooling channel, 208, water inlet, 209,
Water outlet, 210, seal, 211, shell.
Specific embodiment
The utility model is described in further detail below in conjunction with attached drawing.
As depicted in figs. 1 and 2, a kind of fibre cladding optical power device for stripping of the utility model mainly includes double clad
Optical fiber 1, ferrule 2.
The middle section of doubly clad optical fiber 1 is that cladding light leaks part 101.Cladding light leakage part 101 eliminates coating
Layer and surrounding layer.
Ferrule 2 mainly includes light-absorption layer 201, scattering gas 202, gas passage 203, air inlet 204, gas outlet
205, cooling water 206, water-cooling channel 207, water inlet 208, water outlet 209, seal 210, shell 211.
Ferrule 2 is made of heat-conducting metals such as aluminium, copper.
The circle there are four water inlet 208, on 211 right side of shell is uniformly arranged on the circular cross section in 211 left side of shell
Water outlet 209 there are four being uniformly arranged on shape cross section.
The circle there are two air inlet 204, on 211 right side of shell is uniformly arranged on the circular cross section in 211 left side of shell
Gas outlet 205 there are two being uniformly arranged on shape cross section.
A seal 210 is provided in the middle position of the circular cross section of 211 left and right sides of shell.
It is internally provided with a light-absorption layer 201 in shell 211, by the light-absorption layer 201 by 211 inside division of shell at gas
Channel 203 and water-cooling channel 207.Water-cooling channel 207 is located at 203 outer ring of gas passage.Meanwhile four water inlets 208 and four
Water outlet 209 is connected with water-cooling channel 207, and two air inlets 204, two gas outlets 205, seals 210 are and gas
Channel 203 is connected.
Scattering gas 202 is filled in gas passage 203 by air inlet 204.Scattering gas is filled in gas passage 203
202, scattering gas 202 is recycled in gas passage 203 by air inlet 204, gas outlet 205.
Cooling water 206 is entered in water-cooling channel 207 by water inlet 208.Cooling water 206 is filled in water-cooling channel 207,
Cooling water 206 is recycled in water-cooling channel 207 by water inlet 208, water outlet 209.
Doubly clad optical fiber 1 is placed in ferrule 2.Particularly: doubly clad optical fiber 1 passes through the seal of the left and right sides
210, seal 210 is sealed with sealant and doubly clad optical fiber 1 is fixed, the cladding light leakage part 101 of doubly clad optical fiber 1
In ferrule 2, cladding light leakage part 101 is suspended from gas passage 203.
In present embodiment, light-absorption layer 201 is that surface has carried out the metal cracked down evil force with coarse processing.
In present embodiment, scattering gas 202 be the nitrogen containing scattering particles, inert gas or they two kinds and
Two or more mixtures.It scatters comprising the scattering particles having a size of 50~500 μm in gas 202, scattering particles is titanium dioxide
The particle of the high temperature resistants substance such as titanium, aluminum oxide or graphite.
In present embodiment, it is optimum temperature that the temperature of cooling water 206, which is 20 degree,.
A kind of fibre cladding optical power process for stripping of the utility model is using a kind of above-mentioned fibre cladding optical power
What device for stripping was realized, specific operation process is as follows:
The middle section of doubly clad optical fiber 1 is removed into coat and surrounding layer, naked leakage inner cladding is leaked as cladding light
Doubly clad optical fiber 1 is placed in the gas passage 203 of ferrule 2 by part 101, and cladding light leakage part 101 is suspended from completely
In gas passage 203, the seal 210 at 203 both ends of gas passage is sealed with sealant, while playing fixed doubly clad optical fiber
1 effect.Scattering gas 202 is circulated in gas passage 203 by air inlet 204 and gas outlet 205, scatters gas
Scattering particles in 202 is flowed with scattering gas 202, and the scattering particles and packet of the movement in gas 202 are scattered in flow process
Layer light leakage part 101 contacts, and is scattered to cladding light, achievees the purpose that cladding light Power leakage with this.By scattering particles
The cladding light of scattering is irradiated on light-absorption layer 201, and cladding light sorption enhanced is self heat, the heat generated by light-absorption layer 201
Amount is taken away by cooling water 206.Cooling water 206 passes through water inlet 208 and water outlet 209 recycle stream in water-cooling channel 207
It is dynamic, the heat that covering optical power converts is taken away, fibre cladding optical power stripping off device is made to be maintained at constant operating temperature.
The utility model is described in further detail with reference to embodiments.
Embodiment 1
Length is taken to be greater than the doubly clad optical fiber 1 of 50cm, position removes coat in such a way that machinery strips therebetween
It is left cladding light leakage part 101 with surrounding layer, removal length is 10cm.Doubly clad optical fiber 1 is placed in ferrule 2, it is double
Cladded-fiber 1 passes through seal 210, and seal 210 is sealed with sealant and fixes doubly clad optical fiber 1.Cladding light leak
101 are divided to be suspended from gas passage 203.The material of ferrule 2 is brass material.
Full of scattering gas 202 in gas passage 203, gas 202 is scattered in air inlet 204, gas passage 203, outlet
It is circulated in mouth 205.Scattering gas 202 is made of nitrogen, wherein including the titanium dioxide that diameter is 50~100 μm
Grain.Titanium dioxide granule is flowed with gas and is moved, and contacts in motion process with cladding light leakage part 101, cladding light is dissipated
It is mapped in gas, and is irradiated on light-absorption layer 201 and is absorbed, temperature increases after light-absorption layer 201 absorbs cladding light.
Cooling water 206 is full of in water-cooling channel 207, cooling water 206 is in water inlet 208, water-cooling channel 207, water outlet 209
In circulate.Cooling water 206 is deionized water, enters water cooling unit after the outflow of water outlet 209 and carries out heat exchange, guarantees cooling
The temperature of water 206 is 20 degree.Cooling water 206 takes away the heat that light-absorption layer 201 generates in cyclic process.It is thus achieved that packet
Layer optical power filters out.
Embodiment 2
Length is taken to be greater than the doubly clad optical fiber 1 of 50cm, position removes coat in such a way that machinery strips therebetween
It is left cladding light leakage part 101 with surrounding layer, removal length is 10cm.Doubly clad optical fiber 1 is placed in ferrule 2, it is double
Cladded-fiber 1 passes through seal 210, and seal 210 is sealed with sealant and fixes doubly clad optical fiber 1.Cladding light leak
101 are divided to be suspended from gas passage 203.The material of ferrule 2 is brass material.
Full of scattering gas 202 in gas passage 203, gas 202 is scattered in air inlet 204, gas passage 203, outlet
It is circulated in mouth 205.Scattering gas 202 is made of inert gas helium, wherein including three that diameter is 200~250 μm
The hybrid particles of Al 2 O and titanium dioxide (volume ratio of aluminum oxide and titanium dioxide is 3:1).Aluminum oxide with
The hybrid particles of titanium dioxide are flowed with gas and are moved, and are contacted in motion process with cladding light leakage part 101, by cladding light
It scatters in gas, and is irradiated on light-absorption layer 201 and is absorbed, temperature increases after light-absorption layer 201 absorbs cladding light.
Cooling water 206 is full of in water-cooling channel 207, cooling water 206 is in water inlet 208, water-cooling channel 207, water outlet 209
In circulate.Cooling water 206 is deionized water, enters water cooling unit after the outflow of water outlet 209 and carries out heat exchange, guarantees cooling
The temperature of water 206 is 20 degree.Cooling water 206 takes away the heat that light-absorption layer 201 generates in cyclic process.It is thus achieved that packet
Layer optical power filters out.
The above is only the preferred embodiment of the utility model, it is noted that for the common skill of the art
For art personnel, without departing from the principle of this utility model, several improvements and modifications can also be made, these improve and
Retouching also should be regarded as the protection scope of the utility model.
Claims (8)
1. a kind of fibre cladding optical power device for stripping, including doubly clad optical fiber (1), the middle part of the doubly clad optical fiber (1)
It is divided into cladding light leakage part (101), which is characterized in that further include ferrule (2), the doubly clad optical fiber (1) is placed in
In ferrule (2)；
The ferrule (2) includes shell (211), is arranged in the internal light-absorption layer (201) of shell (211), passes through light-absorption layer
(201) by shell (211) inside division at gas passage (203) and water-cooling channel (207), be uniformly arranged on shell (211)
Four water inlets (208) on the circular cross section of left side and being connected with water-cooling channel (207) are uniformly arranged on shell
(211) right side circular cross section on and be connected with water-cooling channel (207) four water outlets (209), be uniformly arranged outside
On the left of shell (211) on circular cross section and be connected with gas passage (203) two air inlets (204), be uniformly arranged on
On the right side of shell (211) on circular cross section and be connected with gas passage (203) two gas outlets (205), setting outside
Circular cross section middle position and the seal (210) being connected with gas passage (203) at left and right sides of shell (211)；
The doubly clad optical fiber (1) passes through the seal (210) of the left and right sides, and the seal (210) is sealed simultaneously with sealant
Doubly clad optical fiber (1) is fixed, and the cladding light leakage part (101) is suspended from gas passage (203)；
Full of scattering gas (202) in the gas passage (203), the scattering gas (202) passes through air inlet (204), goes out
Port (205) circulation in gas passage (203)；
Cooling water (206) are full of in the water-cooling channel (207), the cooling water (206) passes through water inlet (208), water outlet
(209) circulation in water-cooling channel (207).
2. a kind of fibre cladding optical power device for stripping according to claim 1, which is characterized in that the light-absorption layer
(201) crack down evil force using surface and be made with the metal of coarse processing.
3. a kind of fibre cladding optical power device for stripping according to claim 1, which is characterized in that the ferrule
(2) it is made of heat-conducting metal.
4. a kind of fibre cladding optical power device for stripping according to claim 1, which is characterized in that by doubly clad optical fiber
(1) middle section removal coat and surrounding layer, naked leakage inner cladding leaks part (101) as cladding light.
5. a kind of fibre cladding optical power device for stripping according to claim 1, which is characterized in that the scattering gas
(202) contain scattering particles in, the scattering gas (202) is selected from one of nitrogen or inert gas or a variety of.
6. a kind of fibre cladding optical power device for stripping according to claim 5, which is characterized in that the scattering particles
Having a size of 50~500 μm.
7. a kind of fibre cladding optical power device for stripping according to claim 5 or 6, which is characterized in that the scattering grain
Son is selected from one of titanium dioxide, aluminum oxide or graphite or a variety of.
8. a kind of fibre cladding optical power device for stripping according to claim 1, which is characterized in that the cooling water
(206) temperature is 20 degree.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820922266.5U CN208241073U (en) | 2018-06-14 | 2018-06-14 | Optical fiber cladding optical power stripping device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820922266.5U CN208241073U (en) | 2018-06-14 | 2018-06-14 | Optical fiber cladding optical power stripping device |
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| CN208241073U true CN208241073U (en) | 2018-12-14 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808430A (en) * | 2018-06-14 | 2018-11-13 | 吉林省永利激光科技有限公司 | Optical fiber cladding optical power stripping device and stripping method |
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- 2018-06-14 CN CN201820922266.5U patent/CN208241073U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108808430A (en) * | 2018-06-14 | 2018-11-13 | 吉林省永利激光科技有限公司 | Optical fiber cladding optical power stripping device and stripping method |
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