CN107565351A - Optical fiber laser preparation method - Google Patents
Optical fiber laser preparation method Download PDFInfo
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- CN107565351A CN107565351A CN201711037040.3A CN201711037040A CN107565351A CN 107565351 A CN107565351 A CN 107565351A CN 201711037040 A CN201711037040 A CN 201711037040A CN 107565351 A CN107565351 A CN 107565351A
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- optical fiber
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- fiber laser
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Abstract
The invention discloses a kind of optical fiber laser preparation method, including：Using drawing method, the tail optical fiber of the one end for the Active Optical Fiber made and pump arrangement is connected as one, the Active Optical Fiber is one section of optical fiber of incorporation gain substance；Two end surfaces of the fiber segment of gain substance are mixed in the Active Optical Fiber, etch optical grating construction respectively；Output end is connected to one end that the Active Optical Fiber is not connected with the pump arrangement.Optical fiber laser preparation method of the present invention, each device of a whole set of optical fiber laser is produced on simple optical fiber, reduce fusion point compared with prior art, optical fiber laser being reduced because the problem of fusion point causes be present, being favorably improved the reliability and output stability of optical fiber laser.
Description
Technical field
The present invention relates to field of laser device technology, more particularly to a kind of optical fiber laser preparation method.
Background technology
Optical fiber laser is all optical fibre structure, including pumping source, Active Optical Fiber, grating and export head, wherein, pumping source
For providing pump light, Active Optical Fiber is that incorporation rare earth element refers in optical fiber surface as gain media, grating in a fiber
Specific groove structure is produced, the different wavelengths of light propagated in optical fiber is selected for realizing.
In the prior art, the preparation method of optical fiber laser is to get out pump light source, and the good Active Optical Fiber of pre-production,
Grating and export head, then each device order welding is connected and to form whole optical fiber laser.However, swash for high power
Light device (>100W), at fusion point caused by light leak local temperature rise, make optical fiber melt down, component failure the problems such as show especially out
Come, greatly affect the reliability of whole Optical Maser System and the stability of power output.
The content of the invention
In view of this, the present invention provides a kind of optical fiber laser preparation method, and the optical fiber laser fusion point of making is few, has
Help improve the reliability and output stability of optical fiber laser.
To achieve the above object, the present invention provides following technical scheme：
A kind of optical fiber laser preparation method, including：
Using drawing method, the tail optical fiber of the one end for the Active Optical Fiber made and pump arrangement is connected as one, it is described
Active Optical Fiber is one section of optical fiber of incorporation gain substance；
Two end surfaces of the fiber segment of gain substance are mixed in the Active Optical Fiber, etch optical grating construction respectively；
Output end is connected to one end that the Active Optical Fiber is not connected with the pump arrangement.
Alternatively, the preparation method of the Active Optical Fiber includes：
By prepared fibre-optical drawing to preset length, gain thing is mixed in the default section of optical fiber in pulling process
Matter.
Alternatively, the gain substance mixed in a fiber is rare earth element.
Alternatively, it is described to use drawing method, the tail optical fiber of the one end for the Active Optical Fiber made and pump arrangement is connected
Be integrated including：
By the tail optical fiber spiral winding of one end of the Active Optical Fiber and the pump arrangement, wound section is heated, when twining
Drawn when being in molten condition around part fiber, be integrated one end of the Active Optical Fiber and the tail optical fiber melting of pump arrangement.
Alternatively, output end is connected to that the Active Optical Fiber is not connected with the pump arrangement using burning-on method one
End.
Alternatively, it is described output end is connected to one end that the Active Optical Fiber is not connected with the pump arrangement before
Also include：
Using caustic solution, corrode in one end that the Active Optical Fiber is not connected with the pump arrangement it is irregular small
Hole, making form photospallation device.
Alternatively, corroded using hydrofluoric acid solution.
Alternatively, it is described output end is connected to one end that the Active Optical Fiber is not connected with the pump arrangement after
Also include：The optical fiber structure obtained for making, in the surrounding layer that the optical fiber outer cladding without surrounding layer shields.
Alternatively, in addition to：The bundling device, photospallation device and the grating section that make obtained optical fiber structure are encapsulated in heat
In heavy, and total is encapsulated in cooled plate.
As shown from the above technical solution, optical fiber laser preparation method provided by the present invention, first using drawing method,
The tail optical fiber of the one end for the Active Optical Fiber made and pump arrangement is connected as one, then mixes gain substance in Active Optical Fiber
Two end surfaces of fiber segment etch optical grating construction respectively, then the output end in the other end connection of Active Optical Fiber, so as to
Produce optical fiber laser.As can be seen that optical fiber laser preparation method provided by the invention, is produced whole on simple optical fiber
Each device of unjacketed optical fiber laser, reduces fusion point compared with prior art, can reduce optical fiber laser because fusion point be present
The problem of causing, it is favorably improved the reliability and output stability of optical fiber laser.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, below will be to embodiment or existing
There is the required accompanying drawing used in technology description to be briefly described, it should be apparent that, drawings in the following description are only this
Some embodiments of invention, for those of ordinary skill in the art, on the premise of not paying creative work, can be with
Other accompanying drawings are obtained according to these accompanying drawings.
Fig. 1 is a kind of flow chart of optical fiber laser preparation method provided in an embodiment of the present invention；
Fig. 2 is a kind of schematic diagram of the optical fiber laser made using method shown in Fig. 1；
Fig. 3 is a kind of flow chart for optical fiber laser preparation method that further embodiment of this invention provides；
Fig. 4 is a kind of schematic diagram of the optical fiber laser made using method shown in Fig. 3.
Embodiment
In order that those skilled in the art more fully understand the technical scheme in the present invention, below in conjunction with of the invention real
The accompanying drawing in example is applied, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described implementation
Example only part of the embodiment of the present invention, rather than whole embodiments.It is common based on the embodiment in the present invention, this area
The every other embodiment that technical staff is obtained under the premise of creative work is not made, should all belong to protection of the present invention
Scope.
Fig. 1 is refer to, a kind of optical fiber laser preparation method provided in an embodiment of the present invention, is comprised the following steps：
S10：Using drawing method, the tail optical fiber of the one end for the Active Optical Fiber made and pump arrangement is connected as one,
The Active Optical Fiber is one section of optical fiber of incorporation gain substance.
Fig. 2 is referred to, for the schematic diagram of the optical fiber laser made using the present embodiment method.Illustrate first, institute
The Active Optical Fiber stated refers to one section of optical fiber for being mixed with gain substance, i.e., is at least mixed with gain in a section in this section of optical fiber
Material, this gain media of part fiber section as the optical fiber laser being fabricated to, for being risen to the light propagated in laser
Acted on to energy gain.
During actual fabrication, following methods can be used to make Active Optical Fiber 20, manufacturing process includes：By prepared light
Fibre is drawn to preset length, and gain substance is mixed in the default section of optical fiber in pulling process., will according to advance design
Pre-prepd fibre-optical drawing mixes gain substance to preset length in the default section during the drawing in optical fiber.It is excellent
Choosing, the gain substance of incorporation can be rare earth element.
Then the Active Optical Fiber 20 made is connected with pump arrangement 21.In the specific implementation, manufacturing process is specifically wrapped
Include：By one end of the Active Optical Fiber 20 and the tail optical fiber spiral winding of the pump arrangement 21, wound section is heated, works as winding
Part fiber is drawn when being in molten condition, one end of the Active Optical Fiber 20 is melted with the tail optical fiber of the pump arrangement 21 and is
One.The Active Optical Fiber of making is connected by the present embodiment method by drawing method with pump arrangement, is avoided existing using molten
Fusion point can be formed by the two connection by connecing method, avoid causing leakage problem.
In actual applications, if optical fiber laser uses multiple pump arrangements, the combiner that multiple pump arrangements are exported
Laser pump light is used as afterwards, accordingly in manufacturing process, can use the above method, by the tail optical fiber of multiple pump arrangements 21 and is had
The one end of source optical fiber 20 is spirally wound together into, and carrying out drawing makes to link into an integrated entity, and then installs shell outside optical fiber connecting portion,
Making forms bundling device 22.
S11：Two end surfaces of the fiber segment of gain substance are mixed in the Active Optical Fiber, etch grating knot respectively
Structure.
Optionally, lithographic method can be used, two end surfaces of the fiber segment of gain substance are mixed in Active Optical Fiber 20,
Specific groove structure is etched respectively, to produce grating at optical fiber both ends respectively.
S12：Output end is connected to one end that the Active Optical Fiber is not connected with the pump arrangement.
Output end 23 for output light is connected to one end that Active Optical Fiber 20 is not connected with pump arrangement 21, it is exemplary
, output end 23 is end cap, and end cap is connected on the one end of Active Optical Fiber 20, and end cap has anti-reflection effect to the laser of transmission.
During actual fabrication, output end can be connected on Active Optical Fiber using welding process, can specifically use CO2Burning-on method.
Because output end is positioned at the tail end of whole section of optical fiber, exist in this position fusion point to propagated in optical fiber laser shadow ring it is small, because
Output end can be connected to Active Optical Fiber by this using welding process.
The optical fiber laser preparation method that the present embodiment provides, produces each of a whole set of optical fiber laser on simple optical fiber
Individual device, reduces fusion point compared with prior art, can reducing optical fiber laser because the problem of fusion point causes be present, helping
In the reliability and output stability that improve optical fiber laser.
In a kind of optical fiber laser preparation method that further embodiment of this invention provides, made optical fiber laser is also
Including the photospallation device for filtering out the cladding light propagated in optical fiber and high-order mode light, Fig. 3 is refer to, what the present embodiment provided
Preparation method comprises the following steps：
S30：Using drawing method, the tail optical fiber of the one end for the Active Optical Fiber made and pump arrangement is connected as one,
The Active Optical Fiber is one section of optical fiber of incorporation gain substance.
S31：Two end surfaces of the fiber segment of gain substance are mixed in the Active Optical Fiber, etch grating knot respectively
Structure.
S32：Using caustic solution, corrode in one end that the Active Optical Fiber is not connected with the pump arrangement and irregularly
Aperture, making form photospallation device.
In the specific implementation, it can be corroded using solution corrosion method in one end of Active Optical Fiber 20 and aperture.Optionally, have
Body can be corroded using hydrofluoric acid solution.Then corrode on optical fiber and shell is installed outside the section for aperture, making forms light
Stripper 24, is referred to shown in Fig. 4.
S33：Output end is connected to one end that the Active Optical Fiber is not connected with the pump arrangement.
In the present embodiment, step S30, S31 and step S32 specific preparation method and process refers to an embodiment
Description, is repeated no more in the present embodiment part.
Various embodiments above description optical fiber laser preparation method in, by output end be connected to Active Optical Fiber not with
After one end of pump arrangement connection, further comprise：The optical fiber structure obtained for making, outside the optical fiber without surrounding layer
Coat the surrounding layer to shield.Usual surrounding layer material is harder, to be played a protective role to internal optical fiber.Also, outsourcing
The refractive index of layer is less than the refractive index of inner fiber, is all-trans with the light for ensureing to propagate in optical fiber in the interface with surrounding layer
Penetrate, ensure that laser is propagated in inside of optical fibre.Coating machine can be used in actual mechanical process in optical fiber outer cladding surrounding layer.
In application, bundling device, photospallation device, the grating of optical fiber laser can generate heat, for this problem, each reality more than
In the optical fiber laser preparation method for applying example description, further comprise：Bundling device, the light stripping of obtained optical fiber structure will be made
From device and grating section be encapsulated in it is heat sink in, and total is encapsulated in cooled plate, to be played to whole optical fiber laser
Cooling protection acts on.
Optical fiber laser preparation method provided by the present invention is described in detail above.It is used herein specifically
Individual example is set forth to the principle and embodiment of the present invention, and the explanation of above example is only intended to help and understands the present invention
Method and its core concept.It should be pointed out that for those skilled in the art, original of the invention is not being departed from
On the premise of reason, some improvement and modification can also be carried out to the present invention, these are improved and modification also falls into right of the present invention and wanted
In the protection domain asked.
Claims (9)
- A kind of 1. optical fiber laser preparation method, it is characterised in that including：Using drawing method, the tail optical fiber of the one end for the Active Optical Fiber made and pump arrangement is connected as one, it is described active Optical fiber is one section of optical fiber of incorporation gain substance；Two end surfaces of the fiber segment of gain substance are mixed in the Active Optical Fiber, etch optical grating construction respectively；Output end is connected to one end that the Active Optical Fiber is not connected with the pump arrangement.
- 2. optical fiber laser preparation method according to claim 1, it is characterised in that the preparation method of the Active Optical Fiber Including：By prepared fibre-optical drawing to preset length, gain substance is mixed in the default section of optical fiber in pulling process.
- 3. optical fiber laser preparation method according to claim 2, it is characterised in that the gain substance mixed in a fiber For rare earth element.
- 4. optical fiber laser preparation method according to claim 1, it is characterised in that it is described to use drawing method, it will make One end of the Active Optical Fiber performed and the tail optical fiber of pump arrangement connect as one including：By one end of the Active Optical Fiber and the tail optical fiber spiral winding of the pump arrangement, wound section is heated, works as wound portion Light splitting fibre is drawn when being in molten condition, is integrated one end of the Active Optical Fiber and the tail optical fiber melting of pump arrangement.
- 5. optical fiber laser preparation method according to claim 1, it is characterised in that connected output end using burning-on method In one end that the Active Optical Fiber is not connected with the pump arrangement.
- 6. according to the optical fiber laser preparation method described in claim any one of 1-5, it is characterised in that described by output end Also include before being connected to one end that the Active Optical Fiber is not connected with the pump arrangement：Using caustic solution, corrode in one end that the Active Optical Fiber is not connected with the pump arrangement and irregular aperture, Making forms photospallation device.
- 7. optical fiber laser preparation method according to claim 6, it is characterised in that carried out using hydrofluoric acid solution rotten Erosion.
- 8. optical fiber laser preparation method according to claim 1, it is characterised in that output end is connected to institute described State one end that Active Optical Fiber is not connected with the pump arrangement also includes afterwards：The optical fiber structure obtained for making, without outer The surrounding layer that the optical fiber outer cladding of covering shields.
- 9. optical fiber laser preparation method according to claim 8, it is characterised in that also include：Obtained light will be made Bundling device, photospallation device and the grating section of fine structure be encapsulated in it is heat sink in, and total is encapsulated in cooled plate.
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| CN201711037040.3A CN107565351A (en) | 2017-10-30 | 2017-10-30 | Optical fiber laser preparation method |
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| CN201711037040.3A CN107565351A (en) | 2017-10-30 | 2017-10-30 | Optical fiber laser preparation method |
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Citations (6)
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|---|---|---|---|---|
| CN102136669A (en) * | 2009-12-08 | 2011-07-27 | 韩国电子通信研究院 | Double clad fiber laser device |
| US20110249320A1 (en) * | 2010-04-12 | 2011-10-13 | Lockheed Martin Corporation | High beam quality and high average power from large-core-size optical-fiber amplifiers |
| KR20130110286A (en) * | 2012-03-29 | 2013-10-10 | 광주과학기술원 | Optical fiber for pump protection and pump light source having the same and beam combiner and fiber laser |
| CN106356704A (en) * | 2016-10-19 | 2017-01-25 | 华南理工大学 | 0.9-micron waveband high-power and single-frequency optical fiber laser device |
| CN106374327A (en) * | 2016-08-25 | 2017-02-01 | 电子科技大学 | Intermediate infrared multi-band all-fiber soft glass laser and laser obtaining method |
| CN107069393A (en) * | 2017-06-12 | 2017-08-18 | 中国工程物理研究院激光聚变研究中心 | Cladding power stripper and optical fiber laser |
-
2017
- 2017-10-30 CN CN201711037040.3A patent/CN107565351A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102136669A (en) * | 2009-12-08 | 2011-07-27 | 韩国电子通信研究院 | Double clad fiber laser device |
| US20110249320A1 (en) * | 2010-04-12 | 2011-10-13 | Lockheed Martin Corporation | High beam quality and high average power from large-core-size optical-fiber amplifiers |
| KR20130110286A (en) * | 2012-03-29 | 2013-10-10 | 광주과학기술원 | Optical fiber for pump protection and pump light source having the same and beam combiner and fiber laser |
| CN106374327A (en) * | 2016-08-25 | 2017-02-01 | 电子科技大学 | Intermediate infrared multi-band all-fiber soft glass laser and laser obtaining method |
| CN106356704A (en) * | 2016-10-19 | 2017-01-25 | 华南理工大学 | 0.9-micron waveband high-power and single-frequency optical fiber laser device |
| CN107069393A (en) * | 2017-06-12 | 2017-08-18 | 中国工程物理研究院激光聚变研究中心 | Cladding power stripper and optical fiber laser |
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Application publication date: 20180109 |
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