CN206864857U - It is a kind of to make the high-power reversely device of polarization-maintaining pumping and signal light combiner - Google Patents
It is a kind of to make the high-power reversely device of polarization-maintaining pumping and signal light combiner Download PDFInfo
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- CN206864857U CN206864857U CN201720566207.4U CN201720566207U CN206864857U CN 206864857 U CN206864857 U CN 206864857U CN 201720566207 U CN201720566207 U CN 201720566207U CN 206864857 U CN206864857 U CN 206864857U
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Abstract
The utility model provides a kind of device for making high-power reversely polarization-maintaining pumping and signal light combiner, and it includes a fibre cladding corrosion device, and the heater of annular carbon dioxide and one vacuumize micro air pump.Fibre cladding corrosion device is used to corrode bundling device periphery six roots of sensation pumping optical fiber to the polarization-maintaining signal optical fibre identical cladding diameter with center, and is furnished with special clamping device, and six roots of sensation pumping fibre and a signal fibre can be loaded into the quartz socket tube of a fluorine doped;The heater of annular carbon dioxide coordinates vacuum extractor to be used for scorification quartz socket tube, makes to collapse to solid, and the diameter of center polarization-maintaining signal optical fibre does not change.The invention can be used for making high power narrow linewidth, the single mode fiber laser and amplifier of linear polarization output.
Description
Technical field
Technical field of optical fiber and laser technology field are the utility model is related to, is related specifically to high-power linear polarization single-mode optics
Fibre laser and amplifier region.
Background technology
High-capacity optical fiber laser is respectively provided with clear superiority in beam quality, volume, weight, efficiency, radiating etc., existing
Be widely used to optical-fibre communications, laser space telecommunication, industrial shipbuilding, automobile making, laser cutting, metal welding,
Civilian industry and the military fields such as military and national defense safety, biologic medical, large foundation construction, are referred to as " third generation laser
Device ".Especially in Laser Processing and two fields of national defense safety, more and more paid attention to and studied.High-power fiber swashs
The passive device of most critical is exactly pumped fiber and signal light combiner in light device.When currently available technology makes this bundling device
Typically all using fibre bundle bundle or put quartz socket tube, after fused biconical taper again in welding an output optical fibre mode.With
Exemplified by making the pumping of (6+1) × 1 and signal light combiner, seven pump multimode fibres are first bundled into a fibre bundle, then
The pumping optical fiber at center is replaced with into polarization-maintaining signal optical fibre, optical fiber to draw cone machining is reused and the quartz socket tube of fibre bundle is drawn into cone.Draw
After cone, will fibre bundle insert quartz ampoule in carry out it is secondary draw cone, finally cone area appropriate location cutting, then section part with
Big core diameter energy-transmission optic fibre is welded together.So, the pump light and polarization-maintaining flashlight that will just be transmitted in six roots of sensation multimode pumping optical fiber
The flashlight transmitted in fibre together while is coupled in the inner cladding of output optical fibre and transmitted, and carries out the high power amplification of next stage.
In order to obtain the single polarization single-mode fiber laser of high-power single-frequency or super-narrow line width, it is necessary at utmost
Suppression stimulated Brillouin scattering (SBS).And theoretical and experiment proves that the mode of backward pump can greatly suppress SBS,
The line width output more narrower than forward pumping can be obtained in the case of equal power output.But due to making bundling device using drawing cone
Method in the fine covering of center signal and fibre core are inevitably subjected to drawing cone simultaneously, cause panda eye to collapse and flashlight
Mode field diameter become big caused by signal light power the problem of leaking into covering, so the Insertion Loss of flashlight is bigger.This is asked
Topic can also endure in forward pumping, but when using backward pump mode, due to signal fine Insertion Loss and letter caused by drawing cone
The leakage of number light, when high power pump and signal are transmitted, can to it is preceding to pumping source and device cause irreversible damage
It is bad.
Utility model content
In order to solve the problems, such as that existing polarization-maintaining pumping and signal light combiner can not be used to carry out high-power backward pump,
The invention proposes a kind of method for making high-power reverse polarization-maintaining pumping and signal light combiner, and it includes a fibre cladding
Corrosion device, the heating of annular carbon dioxide laser and burning melts device and one vacuumizes micro air pump.First with light
Fine covering corrosion device by the surrounding layer of bundling device periphery six roots of sensation pumping optical fiber erode and by inner cladding corrode to center
Polarization-maintaining signal optical fibre identical cladding diameter, and be loaded into six roots of sensation pumping fibre and a signal fibre using special clamping device
In the quartz socket tube of a piece fluorine doped;Then the micro air pump vacuumized is coordinated to quartz using the heater of annular carbon dioxide
Sleeve pipe carries out burning and melted until collapse to solid, while ensures that the diameter of center polarization-maintaining signal optical fibre does not change.The invention can
For making high power narrow linewidth, the single mode fiber laser of linear polarization output.
The utility model is a kind of to make the high-power reversely device of polarization-maintaining pumping and signal light combiner, and it includes a light
Fine covering corrosion device, an annular carbon dioxide laser adjacent with fibre cladding corrosion device burn and melt device, and a company
It is connected on annular carbon dioxide laser and burns to melt and vacuumizes micro air pump on device;
Fibre cladding corrosion device includes container, the hydrofluoric acid solvent in container, the sealing with aperture and fiber clamp
Gas lid is formed;Quartz socket tube is loaded into after fibre cladding corrosion;
Annular carbon dioxide laser is made up of four power and four carbon dioxide lasers of irradiation time all same, its
In, the proportioning of hydrofluoric acid solvent is hydrofluoric acid and ammoniacal liquor ratio is 5:1, the diameter of aperture is big compared with the diameter optical fiber of pumping optical fiber by 20
Micron, the power of carbon dioxide laser is 20 watts.
Used polarization maintaining optical fibre is the polarization maintaining optical fibre of panda ocular structure, bow-tie type polarization maintaining optical fibre or ellipse polarization-maintaining light
It is fine.
Used quartz socket tube is the quartz socket tube that refractive index is less than fibre cladding refractive index.
Quartz socket tube or pure quartz socket tube of the used quartz socket tube for fluorine doped.
The surrounding layer of pumping optical fiber is eroded completely, inner cladding by hydrofluoric acid homogeneous corrosion to and polarization-maintaining signal optical fibre phase
Same diameter, the diameter of polarization-maintaining signal optical fibre keep constant or simply have slight change, ensure that the nothing of high-power signal light is inserted
Damage transmission.
Quartz socket tube and the internal optical fiber loaded are to melt device using an annular carbon dioxide laser burning to be heated
Carry out collapsing burning to certain temperature and melt, persistently vacuumized in heating process, is not present after ensureing quartz ampoule inter collapse
Any interval and bubble.Heated by electrodes can also be used, oxyhydrogen flame heating and the mode of graphite heating are collapsed to quartz socket tube
Sunken burning is melted, or other can carry out the mode of heating of this operation.
Made polarization-maintaining bundling device is Triangle-Profile (2+1) × 1 pump signal combiner device, hexagon distribution
The pump signal combiner device of (6+1) × 1, or the pump signal combiner device of (18+1) × 1.
The center signal optical fiber of made polarization-maintaining bundling device is 20 microns of core diameter, 130 microns or 250 microns of covering
Big core diameter polarization-maintaining energy-transmission optic fibre;Or core diameter is 10 microns, 25 microns or 30 microns, outer cladding diameter is in pumping optical fiber
105/125 micron, 200/240 micron, 200/220 micron or 220/242 micron can be used for transmission high power semi-conductor optical fiber
Couple the passive fiber of output.
In the surrounding layer of bundling device periphery six roots of sensation pumping optical fiber erodes and incited somebody to action first with fibre cladding corrosion device
Covering corrodes to the polarization-maintaining signal optical fibre identical cladding diameter with center, and using special clamping device that six roots of sensation pumping is fine
It is loaded into a signal fibre in the quartz socket tube of a fluorine doped;Then coordinated using the heater of annular carbon dioxide and taken out very
Empty device carries out burning to quartz socket tube and melted until collapse to solid, while ensures that the diameter of center polarization-maintaining signal optical fibre does not become
Change.The invention can be used for making high power narrow linewidth, the single mode fiber laser of linear polarization output.
The utility model compared with prior art, has the following advantages that and beneficial effect:
1. high-power reversely polarization-maintaining pumping and signal light combiner are proposed first, available for the single polarization for making super-narrow line width
Single mode fiber laser and amplifier.Patent or report before is all that intelligence is preceding to the polarization-maintaining pump signal combiner used
Device, this forward direction bundling device due to needed in preparation method it is fine to center polarization-maintaining signal carry out fused biconical taper, so can not by with
In backward pumping.And stimulated Brillouin scattering effect can further be suppressed using backward pumping, obtain the single-frequency of more narrow linewidth
Fiber laser and amplifier.
2. middle polarization-maintaining signal optical fibre will not be bored by drawing, therefore diameter will not change, therefore can ensure high power
Zero Insertion Loss of signal transmission, can be applied to high-power forward and backward pump coupling simultaneously, it is possible to achieve and profile pump coupling
The effect same of conjunction, while manufacture craft is simple and easy, cost is cheap preferably to be produced in batches.
Brief description of the drawings
The high-power reversely elevational sectional views of polarization-maintaining pumping and signal light combiner of Fig. 1 (6+1) × 1
The high-power reversely side cross-sectional, views of polarization-maintaining pumping and signal light combiner of Fig. 2 (6+1) × 1
Fig. 3 carry out the schematic device of fibre cladding corrosion using hydrofluoric acid vapor
The heating of Fig. 4 annular carbon dioxide lasers and burning melt device
1. the pumping after being corroded is fine
2. the quartz socket tube of fluorine doped
3. polarization-maintaining signal is fine
4. panda eye
5. the fine fibre core of signal
6. the input pumping tail optical fiber of bundling device
7. output optical fibre
8. hydrofluoric acid container made of polytetrafluoroethylene (PTFE) material
9. hydrofluoric acid solvent
10. hydrofluoric acid volatile matter
11. fiber clamp
12. aperture
13. blanket gas lid
14. the light beam of carbon dioxide output
15. carbon dioxide laser
Embodiment
With reference to specific embodiment, the utility model is described in further detail.
It is cross section and the side schematic view of the high-power polarization-maintaining pumping in (6+1) × 1 and signal light combiner as shown in Figure 1, Figure 2,
Elevational sectional view show the six roots of sensation be corroded after pumping fibre 1 be arranged closely in polarization-maintaining signal fibre 3 according to the shape of hexagon
Around, the fine fibre core 5 of polarization-maintaining signal and panda eye 4 do not make any corrosion and drawing cone, maintain the original state.In above-mentioned seven optical fiber
Outside puts the quartz socket tube 2 of a fluorine doped.Lateral plan shows one section of meeting of tail optical fiber 1 of the input pumping tail optical fiber 6 of bundling device
The diameter identical size fine with center polarization-maintaining signal is corroded to, and is inserted into quartz socket tube 2, center polarization-maintaining signal fibre 3
It is also inserted into after the pumping fibre at replacement center in quartz socket tube 2, melting by annular carbon dioxide laser heating burning collapses to it
After solid with the big core diameter polarization-maintaining signal transmission fiber welding of output, the fine fibre core 5 of signal and panda eye 4 ensures and output optical fibre
7 fibre core and panda eye alignment welding, realize the Lossless transport of high-power signal light.
It is the device corroded using hydrofluoric acid vapor to pumping fibre as shown in Figure 3, a polytetrafluoroethylene (PTFE) material system
Into hydrofluoric acid container 8, the inside fill certain proportion configuration hydrofluoric acid solvent 9 because the strong acid that hydrofluoric acid term is volatile,
So the volatile matter 10 for having hydrofluoric acid produces.It is the blanket gas lid 13 of an intermediate projections above container 8, intermediate projections portion
There is two hundreds of microns of aperture 12 both sides being divided to, insertion and output for pumping optical fiber 6.The both sides of blanket gas lid 13 respectively have one
Individual fiber clamp 11, for fixed pumping fibre 6 to be corroded.One section of tail optical fiber that pumping fibre 6 needs to corrode is fixed in middle convex
The middle part of the blanket gas lid risen, slowly uniform corrosion is carried out to it by the steam of hydrofluoric acid, until corrosion is to in
Further taken out after the diameter of heart polarization-maintaining signal 3 equal sizes of fibre.
It is that annular carbon dioxide laser heating and burning melt device as shown in Figure 4.Four carbon dioxide lasers 15 are by due order
Sequence is fixed into a diamond shaped, it is ensured that the light beam 14 of carbon dioxide laser output, which can need center to heat to burn, melt to collapsing
Quartz socket tube 2 is by 360 degree of uniform folds and irradiation.Four carbon dioxide lasers are exported by a control transmitter control,
Ensure that the parameter such as time, power of output is just the same.
Claims (8)
1. a kind of make the high-power reversely device of polarization-maintaining pumping and signal light combiner, it is characterised in that it includes a light
Fine covering corrosion device, an annular carbon dioxide laser adjacent with fibre cladding corrosion device burn and melt device, and a company
It is connected on annular carbon dioxide laser and burns to melt and vacuumizes micro air pump on device;
Fibre cladding corrosion device includes container, the hydrofluoric acid solvent in container, the blanket gas lid with aperture and fiber clamp
Form;Quartz socket tube is loaded into after fibre cladding corrosion;
Annular carbon dioxide laser is made up of four power and four carbon dioxide lasers of irradiation time all same, wherein,
The proportioning of hydrofluoric acid solvent is hydrofluoric acid and ammoniacal liquor ratio is 5:1, the diameter big compared with the diameter optical fiber of pumping optical fiber 20 of aperture is micro-
Rice, the power of carbon dioxide laser is 20 watts.
2. a kind of device for making high-power reverse polarization-maintaining pumping and signal light combiner according to claim 1, it is special
Sign is:Used polarization maintaining optical fibre is the polarization maintaining optical fibre of panda ocular structure, bow-tie type polarization maintaining optical fibre or ellipse polarization maintaining optical fibre.
3. according to a kind of device for making high-power reverse polarization-maintaining pumping and signal light combiner described in claim 1, its feature
It is:The quartz socket tube is the quartz socket tube that refractive index is less than fibre cladding refractive index.
4. according to a kind of device for making high-power reverse polarization-maintaining pumping and signal light combiner described in claim 1, its feature
It is:Quartz socket tube or pure quartz socket tube of the quartz socket tube for fluorine doped.
5. according to a kind of device for making high-power reverse polarization-maintaining pumping and signal light combiner described in claim 1, its feature
It is:The surrounding layer of pumping optical fiber is eroded completely, and inner cladding is extremely identical with polarization-maintaining signal optical fibre by hydrofluoric acid homogeneous corrosion
Diameter, the diameter of polarization-maintaining signal optical fibre keep constant or simply have slight change, ensure high-power signal light without Insertion Loss
Transmission.
6. according to a kind of device for making high-power reverse polarization-maintaining pumping and signal light combiner described in claim 1, its feature
It is:Quartz socket tube and the internal optical fiber loaded are to melt device using an annular carbon dioxide laser burning to carry out being heated to one
Constant temperature degree, which carries out collapsing burning, to be melted, and is persistently vacuumized in heating process, ensures to be not present after quartz ampoule inter collapse any
Interval and bubble;Or using heated by electrodes, the mode of oxyhydrogen flame heating and graphite heating carries out collapsing burning to quartz socket tube melts.
7. according to a kind of device for making high-power reverse polarization-maintaining pumping and signal light combiner described in claim 1, its feature
It is:Made polarization-maintaining bundling device is Triangle-Profile (2+1) × 1 pump signal combiner device, (the 6+ of hexagon distribution
1) × 1 pump signal combiner device, or the pump signal combiner device of (18+1) × 1.
8. according to a kind of device for making high-power reverse polarization-maintaining pumping and signal light combiner described in claim 1, its feature
It is:The center signal optical fiber of made polarization-maintaining bundling device is 20 microns of core diameter, 130 microns or 250 microns of covering
Big core diameter polarization-maintaining energy-transmission optic fibre;Or core diameter is 10 microns, 25 microns or 30 microns, outer cladding diameter is in pumping optical fiber
105/125 micron, 200/240 micron, 200/220 micron or 220/242 micron can be used for transmission high power semi-conductor optical fiber
Couple the passive fiber of output.
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CN110429464A (en) * | 2019-07-19 | 2019-11-08 | 东莞理工学院 | A kind of superpower laser bundling device |
JP2023509355A (en) * | 2019-12-17 | 2023-03-08 | 華為技術有限公司 | Optical amplification device and signal amplification method for optical amplification device |
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Effective date of registration: 20200320 Address after: 518105 607, building a, No.9 Furong Road, Tantou community, Songgang street, Bao'an District, Shenzhen City, Guangdong Province Patentee after: Shenzhen Gongda laser Co., Ltd Address before: Futian District Xiangmi Lake street in Shenzhen city of Guangdong province Zhuzilin 518040 Qiushi East Building 810 Patentee before: SHENZHEN FANYUE PHOTOELECTRIC Co.,Ltd. |
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