CN203930134U - High power laser light bundling device based on multi-core fiber - Google Patents
High power laser light bundling device based on multi-core fiber Download PDFInfo
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- CN203930134U CN203930134U CN201420270138.9U CN201420270138U CN203930134U CN 203930134 U CN203930134 U CN 203930134U CN 201420270138 U CN201420270138 U CN 201420270138U CN 203930134 U CN203930134 U CN 203930134U
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- multicore
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- 239000000835 fiber Substances 0.000 title claims abstract description 74
- 239000013307 optical fiber Substances 0.000 claims abstract description 59
- 238000001816 cooling Methods 0.000 claims abstract description 21
- 230000005540 biological transmission Effects 0.000 claims abstract description 14
- 238000005538 encapsulation Methods 0.000 claims abstract description 14
- 238000003466 welding Methods 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 9
- 239000004065 semiconductor Substances 0.000 claims description 3
- 238000007493 shaping process Methods 0.000 claims description 3
- 229910044991 metal oxide Inorganic materials 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 claims description 2
- 238000010168 coupling process Methods 0.000 abstract description 4
- 238000005859 coupling reaction Methods 0.000 abstract description 4
- 230000008878 coupling Effects 0.000 abstract description 3
- 230000002401 inhibitory effect Effects 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 238000009826 distribution Methods 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000005253 cladding Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 230000003287 optical effect Effects 0.000 description 2
- 101100456571 Mus musculus Med12 gene Proteins 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 230000009022 nonlinear effect Effects 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to a kind of high power laser light bundling device based on multi-core fiber, comprise multicore input optical fibre, output optical fibre, cooling encapsulation housing, fibre-optic transmission system (FOTS), it is characterized in that: one end of described multicore input optical fibre is by drawing taper to become one section of multicore conical fiber, one end-grain cutting of multicore conical fiber is flat to be welded together with output optical fibre, and be encapsulated on cooling encapsulation housing, cooling encapsulation enclosure interior is carried out water-cooling, multi-path laser input signal enters multicore input optical fibre, in multicore conical fiber, close bundle, and through Transmission Fibers and fibre-optic transmission system (FOTS) output power.The utility model, by using the mode of multi-core fiber, makes multichannel input laser in multicore conical fiber, close bundle, last and Transmission Fibers welding.This invention, when guaranteeing coupling efficiency, reliability, can realize the sharp combiner of super high light beam mass, for high power laser light, closes bundle important in inhibiting.
Description
Technical field
The utility model belongs to fiber laser technology field, relates to a kind of high power laser light bundling device, for multichannel is inputted to laser, synthesizes an output, reaches the object that improves fiber laser output power, guarantees beam quality simultaneously.
Technical background
Fiber laser is the third generation new laser after traditional gas laser and solid state laser, there is the advantages such as compact conformation, life-span are long, non-maintaining, good beam quality, energy-conserving and environment-protective, be successfully applied to machining, medical treatment, automobile making and the field such as military.Along with the continuous expansion of its application, as laser instrument cutting and the welding of thick sheet metal in the industries such as automobile making, shipbuilding, wish that the output power of fiber laser reaches thousands of watts to tens of kilowatts.
Although the output power of simple optical fiber has broken through 2000W at present, but only limit to laboratory level, and the restriction due to physical mechanisms such as the nonlinear effect in doped fiber and fire damages, the further lifting of simple optical fiber output power will be very difficult, and the ripe general power of single fiber laser power cell is in 1500W left and right at present.
For improving the output power of fiber laser, this just need to be combined into a branch of output by a plurality of fiber laser power cells, mainly contains relevant synthetic and two kinds of methods of Incoherent beam combining.The relevant composite structure of fiber laser is comparatively complicated, and stability is not good, and report is realized peak power only for thousands of watts both at home and abroad at present.The Incoherent beam combining of fiber laser, is also that commercial synthetic technology is that power is synthetic, and it is by passing through fused biconical taper several laser beam, become a branch of, then with simple optical fiber welding, the method is simple and reliable, also high-power output can be realized, but higher beam quality cannot be guaranteed.
Summary of the invention
Defect and problem that the purpose of this utility model exists in order to overcome prior art, a kind of high power laser light bundling device based on multi-core fiber is provided, synthetic for fiber laser power, input end of the present utility model is multi-path laser signal, can input for optical fiber, also can be semi-conductor chip, through beam shaping, with rear space, input; After laser coupled enters multi-core fiber, through one section of multicore conical fiber, last and output optical fibre welding output.The utility model, when guaranteeing coupling efficiency, reliability, can realize the sharp combiner of super high light beam mass, for high power laser light, closes bundle important in inhibiting.
A kind of high power laser light bundling device based on multi-core fiber, comprise multicore input optical fibre, output optical fibre, cooling encapsulation housing, fibre-optic transmission system (FOTS), it is characterized in that: one end of described multicore input optical fibre is by drawing taper to become one section of multicore conical fiber, one end-grain cutting of multicore conical fiber is flat and output optical fibre is welded together or described multicore input optical fibre is direct and output optical fibre welding, and be encapsulated on cooling encapsulation housing, cooling encapsulation enclosure interior is carried out water-cooling, multi-path laser input signal enters multicore input optical fibre, in multicore conical fiber or multicore input optical fibre, close bundle, and through Transmission Fibers and fibre-optic transmission system (FOTS) output power.
Described multi-path laser input signal is full optical fiber input signal or semi-conductor chip input signal, after beam shaping, and space input.
The fiber core quantity of described multicore input optical fibre is more than or equal to 2.
The fibre core of described multicore input optical fibre is passive non-mixing or active mixing; Optical fiber jacket is circle or polygon.
It is symmetrical or asymmetric that the fibre core of described multicore input optical fibre is arranged; Each core shape of multi-core fiber is identical or not identical.
Covering beyond the fibre core of described multicore input optical fibre is single or multiple lift; The coat of covering outside is single or multiple lift.
In one section of multicore conical fiber of described multicore input optical fibre, there is relevant synthetic beam combination or incoherent beam combination occur in multichannel input laser.
The cooling base material of described cooling encapsulation housing is metal oxide materials.
One section of multicore conical fiber output end-grain cutting of described multicore input optical fibre is flat, direct one section of plated film end cap of welding, output region laser.
The utility model customer service not high, the poor stability of existing relevant synthetic power, the poor defect problem that waits of the synthetic beam quality of power, has realized multiple laser, high power, high light beam quality are synthetic.
Accompanying drawing explanation
Fig. 1 be the utility model embodiment provide front view.
Fig. 2 is a kind of multicore input optical fibre index distribution schematic diagram.
Fig. 3 is another kind of multicore input optical fibre index distribution schematic diagram.
Fig. 4 is a kind of multicore hexagon optical fiber schematic cross-section.
Fig. 5 a, Fig. 5 b, Fig. 5 c are respectively 3 cores, 4 cores, 19 core fibre schematic cross-sections.
Fig. 6 is the direct welding schematic diagram of multicore conical fiber and end cap.
Fig. 7 is the logical light rear end face laser distribution schematic diagram of multicore conical fiber.
Embodiment
By reference to the accompanying drawings invention is described in detail:
As shown in Figure 1, a kind of high power laser light bundling device based on multi-core fiber, comprise multicore input optical fibre 1, output optical fibre 4, cooling encapsulation housing 9, fibre-optic transmission system (FOTS) 5, it is characterized in that: one end of described multicore input optical fibre 1 is by drawing taper to become one section of multicore conical fiber 2, multicore conical fiber 2 one ends 3 are cut to put down with output optical fibre 4 and are welded together, fusion point 8 is used solidified glue 12 to be encapsulated on cooling encapsulation housing 9, water-cooling is carried out in cooling encapsulation housing 9 inside, 6 is water inlet, 7 is water delivering orifice, multi-path laser input signal enters multicore input optical fibre 1, in multicore conical fiber 2, close bundle, and through Transmission Fibers 4 and fibre-optic transmission system (FOTS) 5 output powers.Fibre-optic transmission system (FOTS) 5 and water-cooling are existing structure.
Take 7 core fibres as example, and its preparation method is as follows:
1, as shown in Figure 2,7 core fibres, each fibre core 11 diameter 10um, fibre core mixes Ge, is step-refraction index and distributes, NA=0.08;
Middle core centre is 6 core centre 100um apart from edge, and covering 10 materials are pure quartz material; Fibre cladding external diameter 2200um; Covering outside applies the low-refraction glue of refractive index <1.36.
Also can use multi-clad as shown in Figure 3, its second cladding index wants high compared with the first covering.
2, divest the coat material of multi-core fiber, after cleaning up, use AFL LZM100CO2 to draw cone machine to draw cone, draw cone length 100mm, draw the rear external diameter of cone to be about 300um.
3, use and to be output as 40um, covering 400um, the doubly clad optical fiber of NA=0.10 is as output optical fibre, directly and the welding of multicore conical fiber;
4, welding area is encapsulated on silicated aluminum material to water flowing heat radiation below encapsulating material.
5, as shown in Figure 6, also multicore input optical fibre directly can be made to 5 meters of long conical fibers, conical fiber input end 2200um, output terminal 300um, conical fiber surface applies the coat of one deck 3000um, use metal armouring to make optical cable, optical cable bending radius is greater than 0.5m, at one section of diameter 15mm of conical fiber afterbody welding, the end cap of length 30mm, end cap end face plating 1064nm AR film, end cap water-cooled is encapsulated in heat dissipation metal housing.7 road Laser output hot spots, as shown in Figure 7.
Based on the method, we have realized 7 bundle 500W laser, be coupled into single 40 ?400 optical fiber output powers be greater than 3400W, efficiency is greater than 99.5%, beam quality M2<3.8.
Adopt in the same way, adopt the active 6 limit type optical fiber of multicore, as shown in Figure 4, by MOPA mode, pump-coupling multicore Active Optical Fiber, can also realize high power, high light beam quality closes bundle.
Adopt in the same way, as shown in Fig. 5 a, Fig. 5 b, Fig. 5 c, can realize 3,4,19 road light signals and close bundle.
Based on this scheme, we use 1x8 monomode coupler, use 1064nm, and single mode light source produces 7 road coherent sources, be coupled in multi-core fiber simultaneously,, output optical fibre adopts 30 ?250 optical fiber, and coupling efficiency is greater than 98%, beam quality M2<2.
In sum, this scheme can, with full optical fiber form, solve high power, high light beam quality partial coherence and the incoherent bundle that closes.
Claims (9)
1. the high power laser light bundling device based on multi-core fiber, comprise multicore input optical fibre, output optical fibre, cooling encapsulation housing, fibre-optic transmission system (FOTS), it is characterized in that: one end of described multicore input optical fibre is by drawing taper to become one section of multicore conical fiber, one end-grain cutting of multicore conical fiber is flat and output optical fibre is welded together or described multicore input optical fibre is direct and output optical fibre welding, and be encapsulated on cooling encapsulation housing, cooling encapsulation enclosure interior is carried out water-cooling, multi-path laser input signal enters multicore input optical fibre, in multicore conical fiber or multicore input optical fibre, close bundle, and through Transmission Fibers and fibre-optic transmission system (FOTS) output power.
2. the high power laser light bundling device based on multi-core fiber as claimed in claim 1, is characterized in that: described multi-path laser input signal is full optical fiber input signal or semi-conductor chip input signal, after beam shaping, and space input.
3. the high power laser light bundling device of multi-core fiber as claimed in claim 1, is characterized in that: the fiber core quantity of described multicore input optical fibre is more than or equal to 2.
4. the high power laser light bundling device based on multi-core fiber as claimed in claim 1, is characterized in that: the fibre core of described multicore input optical fibre is passive non-mixing or active mixing; Optical fiber jacket is circle or polygon.
5. the high power laser light bundling device based on multi-core fiber as claimed in claim 1, is characterized in that: it is symmetrical or asymmetric that the fibre core of described multicore input optical fibre is arranged; Each core shape of multi-core fiber is identical or not identical.
6. the high power laser light bundling device based on multi-core fiber as claimed in claim 1, is characterized in that: the covering beyond the fibre core of described multicore input optical fibre is single or multiple lift; The coat of covering outside is single or multiple lift.
7. the high power laser light bundling device based on multi-core fiber as claimed in claim 1, is characterized in that: in one section of multicore conical fiber of described multicore input optical fibre, multichannel input laser relevant synthetic beam combination occurs or incoherent beam combination occurs.
8. the high power laser light bundling device based on multi-core fiber as claimed in claim 1, is characterized in that: the cooling base material of described cooling encapsulation housing is metal oxide materials.
9. the high power laser light bundling device based on multi-core fiber as claimed in claim 1, is characterized in that: one section of multicore conical fiber output end-grain cutting of described multicore input optical fibre is flat, direct one section of plated film end cap of welding, output region laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270138.9U CN203930134U (en) | 2014-05-23 | 2014-05-23 | High power laser light bundling device based on multi-core fiber |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420270138.9U CN203930134U (en) | 2014-05-23 | 2014-05-23 | High power laser light bundling device based on multi-core fiber |
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| CN203930134U true CN203930134U (en) | 2014-11-05 |
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| CN201420270138.9U Expired - Lifetime CN203930134U (en) | 2014-05-23 | 2014-05-23 | High power laser light bundling device based on multi-core fiber |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035166A (en) * | 2014-05-23 | 2014-09-10 | 武汉锐科光纤激光器技术有限责任公司 | Multi-core optical fiber based high power laser beam combiner |
| CN106159653A (en) * | 2015-04-28 | 2016-11-23 | 中国兵器装备研究院 | A kind of multi-path large power optical-fiber laser synthesis output device |
-
2014
- 2014-05-23 CN CN201420270138.9U patent/CN203930134U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104035166A (en) * | 2014-05-23 | 2014-09-10 | 武汉锐科光纤激光器技术有限责任公司 | Multi-core optical fiber based high power laser beam combiner |
| CN106159653A (en) * | 2015-04-28 | 2016-11-23 | 中国兵器装备研究院 | A kind of multi-path large power optical-fiber laser synthesis output device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP03 | Change of name, title or address |
Address after: 430074 East Lake science and technology zone, Wuhan province high tech Avenue, No. 999, the future of science and technology city of the city of Hubei Patentee after: WUHAN RAYCUS FIBER LASER TECHNOLOGIES Co.,Ltd. Address before: 430223 East Lake New Technology Development Zone, Huazhong University of Science and Technology, Wuhan science and technology park innovation base, building No. 10, building No. Patentee before: WUHAN RAYCUS FIBER LASER TECHNOLOGIES Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20141105 |