CN106997074A - A kind of high-power optical-fiber bundling device and laser - Google Patents
A kind of high-power optical-fiber bundling device and laser Download PDFInfo
- Publication number
- CN106997074A CN106997074A CN201610042230.3A CN201610042230A CN106997074A CN 106997074 A CN106997074 A CN 106997074A CN 201610042230 A CN201610042230 A CN 201610042230A CN 106997074 A CN106997074 A CN 106997074A
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- fibre
- pumping
- optical
- transmission optic
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
Abstract
The present invention is applied to laser technology field, there is provided a kind of high-power optical-fiber bundling device, including an input pumping light fibre, many pumping energy-transmission optic fibres and a signal optical fibre, the fine many pumping energy-transmission optic fibres of output end welding of input pumping light, many pumping energy-transmission optic fibres are connected by being classified profile pump mode with signal optical fibre, and the core diameter of the fine core diameter of input pumping light and signal optical fibre is all higher than the core diameter of pumping energy-transmission optic fibre.The present invention makes the average beam splitting of powerful pump light be transmitted into each small size pumping energy-transmission optic fibre, signal optical fibre is coupled into by profile pump mode again again, realize the conjunction beam of pump light, because pump light is transmitted in beam splitting, side pump is coupled to signal optical fibre again, and then reduces the generation of the beam aberration and used heat of pump light and the influence to flashlight, both ensure that the efficiency of transmission of pump light, the loss of signal of coupling process is also reduced simultaneously, and ensure that the security of laser system.
Description
Technical field
The invention belongs to laser technology field, more particularly to a kind of high-power optical-fiber bundling device and laser.
Background technology
In recent years, due to the excellent specific property of high-capacity optical fiber laser, it is made in industrial processes, national defense and military
Application with the field such as laser medicine progressively expands, and in the market increasingly increases the demand that high power laser light is exported
And the requirement more and more higher to power output.In high power laser system, core devices are to use high-performance
Transmitted in pump signal optical-fiber bundling device, the covering that high power pump laser coupled is entered to doubly clad optical fiber,
Improve laser output power.Current pump coupling technique mainly by the way of oxyhydrogen flame fused biconical taper, leads to
The mode for crossing end coupling pumping or side surface coupling pumping extremely exports coupling pump light in doubly clad optical fiber.
With the increase of pump laser single armed power output, to lower the optical power density that optical fiber is born, used
Pumping optical fiber size also gradually increase.However, for core diameter >=200um pumping energy-transmission optic fibre, by
In waveguide dimensions increase, direct side pump or end pump fused biconical taper will cause the hot spot distortion of output pump light, pump
Light NA divergings in Pu are so as to reduce its coupling efficiency, while producing a large amount of used heat, high power laser system is produced
Raw potential safety hazard.
The content of the invention
It is an object of the invention to provide a kind of high-power optical-fiber bundling device, it is intended to solves major diameter pump light
Fine coupling efficiency is low, produce the problem of heat is big.
The present invention is achieved in that a kind of high-power optical-fiber bundling device, including input pumping light fibre,
Many pumping energy-transmission optic fibres and a signal optical fibre are more described in the fine output end welding of the input pumping light
Root pumping energy-transmission optic fibre, many pumping energy-transmission optic fibres are by being classified profile pump mode and the flashlight
The core diameter of fibre connection, the fine core diameter of the input pumping light and signal optical fibre is all higher than the pumping
The core diameter of energy-transmission optic fibre.
Another object of the present invention is to provide a kind of superpower laser, including described optical-fiber bundling device.
The pumping energy-transmission optic fibre of the present invention many minor diameters of use and the input pumping light fibre of a major diameter are molten
Connect, the average beam splitting of powerful pump light is transmitted into each small size pumping energy-transmission optic fibre, energy is passed in pumping
The output end of optical fiber is coupled into signal optical fibre again by profile pump mode, realizes the conjunction beam of pump light, by
In beam splitting transmit pump light, then side pump be coupled to signal optical fibre, and then reduce pump light beam aberration and
The generation of used heat and the influence to flashlight, both ensure that the efficiency of transmission of pump light, while also reducing
The loss of signal of coupling process, and ensure that the security of laser system.
Brief description of the drawings
Fig. 1 is the structural representation of high-power optical-fiber bundling device provided in an embodiment of the present invention；
Fig. 2 is the structural representation (one) of many pumping energy-transmission optic fibres provided in an embodiment of the present invention；
Fig. 3 is the structural representation (two) of many pumping energy-transmission optic fibres provided in an embodiment of the present invention.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with accompanying drawing and reality
Example is applied, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
Only to explain the present invention, it is not intended to limit the present invention.
It should be noted that when element is referred to as " being fixed on " or " being arranged at " another element, it can be straight
It is connected on another element or may be simultaneously present centering elements.When an element is known as " being connected to "
Another element, it can be directly to another element or may be simultaneously present centering elements.
Only it is phase each other it should also be noted that, the orientation term such as left and right, upper and lower in the present embodiment
To concept or using the normal operating condition of product as reference, and it should not be regarded as restrictive.
Such as Fig. 1, the embodiment of the present invention provides a kind of high-power optical-fiber bundling device, including an input pumping
Optical fiber 1, many pumping energy-transmission optic fibres 2 and a signal optical fibre 3, the output end of input pumping light fibre 1 melt
Many pumping energy-transmission optic fibres 2 are connect, many pumping energy-transmission optic fibres 2 are by being classified profile pump mode and flashlight
Fibre 3 is connected, and the core diameter of input pumping light fibre 1 and the core diameter of signal optical fibre 3 are all higher than pumping biography
The core diameter of energy optical fiber 2.Specifically, input pumping light fibre 1 is a kind of optical fiber of major diameter, is suitable for
High power pump laser is exported, and is made up of the first coat 11, the first covering 12 and the first fibre core 13.Pump
Pu energy-transmission optic fibre 2 is the less optical fiber of core diameter, is made up of the second covering 21 and the second fibre core 22, its
Coat is removed, and the diameter of its fibre core and covering is respectively less than the fibre of input pumping light fibre 1 and signal optical fibre 3
Core and cladding diameter.Signal optical fibre 3 is also large-diameter fibre-optical, by the 3rd fibre core 31, the and of triple clad 32
3rd overlay 33 is constituted, wherein, the 3rd overlay at the position being connected with pumping energy-transmission optic fibre 2 is removed.
Preferably, the diameter of the second fibre core of many pumping energy-transmission optic fibres 2 is identical, further, many pumps
The diameter of second covering of Pu energy-transmission optic fibre 2 is also identical.
The embodiment of the present invention is using the pumping energy-transmission optic fibre 2 of many minor diameters and the input pumping of a major diameter
The welding of optical fiber 1, makes the average beam splitting of powerful pump light be transmitted into each small size pumping energy-transmission optic fibre 2,
Signal optical fibre 3 is coupled into by profile pump mode again in the output end of pumping energy-transmission optic fibre 2, pump is realized
The conjunction beam of Pu light, because pump light is transmitted in beam splitting, then side pump is coupled to signal optical fibre 3, reduces pump light
Beam aberration and used heat generation and influence to flashlight, both ensure that the efficiency of transmission of pump light,
The loss of signal of coupling process is also reduced simultaneously, and ensure that the security of laser system.
In the present embodiment, the diameter of the first fibre core 13 of input pumping light fibre 1 is more than or equal to 200um,
And the diameter of the second fibre core 22 of pumping energy-transmission optic fibre 2 is less than or equal to 200um, wherein, the first fibre core 13
It is equal to 200um when different with the diameter of the second fibre core 22.
With further reference to Fig. 2 and Fig. 3, one end of many pumping energy-transmission optic fibres 2 is burnt by fused biconical taper mode
Form a branch of, bored output end welding with input pumping light fibre 1, pumping energy-transmission optic fibre 2 after area's cutting
The ratio of number of quantity and input pumping light fibre 1 be 2:1、4:1、7:1 or other rational ratios.Enter one
Step ground, in pumping energy-transmission optic fibre 2 and one end of fine 1 welding of input pumping light, adjacent pumping energy-transmission optic fibre
2 is tangent, and outermost pumping energy-transmission optic fibre 2 is inscribed within same circumference, in order to which fused biconical taper is sintered
And welding.With further reference to Fig. 1, the other end of many pumping energy-transmission optic fibres 2 is then according to classification side pump
The mode at Pu is connected with the covering of signal optical fibre 3, also, many pumping energy-transmission optic fibres 2 are connected to signal
The different length position of optical fiber 3.
With further reference to Fig. 2, the present embodiment includes 4 pumping energy-transmission optic fibres 2, and input pumping light is divided into
4 tunnels, wherein, a diameter of 400um of the first fibre core 13 of input pumping light fibre 1, the first covering 12 it is straight
Footpath is 440um, a diameter of 550um of the first coat 11, and the second of output end-pumping energy-transmission optic fibre 2 is fine
A diameter of 200um of core 22, a diameter of 220um of the second covering 21.4 pumping energy-transmission optic fibres 2 are close
Square structure is arranged in, is drawn and attenuated by flame sintering to 440um, interface is cut off and coat is peelled off
Input pumping light 1 welding of fibre, realizes the uniform beam splitting of pump light.Pump light by beam splitting enters 4 pumps
Transmitted in Pu energy-transmission optic fibre 2, peel off the overlay of 4 pumping energy-transmission optic fibres 2, and 4 pumpings are passed into energy
In the classification profile pump entering signal of optical fiber 2 optical fiber 3, pumping combiner effect is realized.
With further reference to Fig. 3, the present embodiment includes 7 pumping energy-transmission optic fibres 2, and the of input pumping light fibre 1
A diameter of 300um of one fibre core 13, a diameter of 330um of the first covering 12, the first coat 11 it is straight
Footpath is 480um, a diameter of 105um of the second fibre core 22 of pumping energy-transmission optic fibre 2, the second covering 21
A diameter of 125um.7 close-packed arrays of pumping energy-transmission optic fibre 2 are into regular hexagon structure, by flame by light
Fine beam sintering, cuts off fine 1 welding of input pumping light with peelling off coat by interface, realizes the equal of pump light
Even beam splitting.Pump light by beam splitting, which enters in 7 small diameter pumping energy-transmission optic fibres 2, to be transmitted, and peels off 7
The coat of root pumping energy-transmission optic fibre 2, and 7 pumping energy-transmission optic fibres 2 are classified profile pump entering signal
In optical fiber 3, the effect of pumping combiner is realized.
It is appreciated that above design parameter is only a kind of preferred embodiment, the present invention is not limited to above-mentioned number
According to.Those skilled in the art can make the beam splitting of different structure and performance parameter under the guidance of above-mentioned principle
Structure, all innovation and creation made within above-mentioned design principle, belongs to protection scope of the present invention.
The high-power optical-fiber bundling device that the present invention is provided avoids pump light by way of closing beam after first beam splitting
Aberration problems and used heat produce problem, improve the coupling efficiency of pump light and the security of laser system,
It is suitable for high-power laser, the laser comprising the optical-fiber bundling device is also in protection scope of the present invention
It is interior.
Presently preferred embodiments of the present invention is these are only, is not intended to limit the invention, it is all the present invention's
Any modification, equivalent substitution or improvement made within spirit and principle etc., should be included in the guarantor of the present invention
Within the scope of shield.
Claims (10)
1. a kind of high-power optical-fiber bundling device, it is characterised in that including an input pumping light fibre, many
Pumping energy-transmission optic fibre and a signal optical fibre, many pumps described in the fine output end welding of the input pumping light
Pu energy-transmission optic fibre, many pumping energy-transmission optic fibres are connected by being classified profile pump mode with the signal optical fibre
Connect, the core diameter of the fine core diameter of the input pumping light and signal optical fibre is all higher than the pumping and passes energy
The core diameter of optical fiber.
2. optical-fiber bundling device as claimed in claim 1, it is characterised in that many pumping energy-transmission optic fibres
Core diameter it is identical.
3. optical-fiber bundling device as claimed in claim 1, it is characterised in that the fine fibre of the input pumping light
Core diameter is more than or equal to 200um.
4. optical-fiber bundling device as claimed in claim 1, it is characterised in that the painting of the pumping energy-transmission optic fibre
Coating is stripped.
5. optical-fiber bundling device as claimed in claim 1, it is characterised in that the number of the pumping energy-transmission optic fibre
Amount is 2 with the fine ratio of number of the input pumping light:1、4:1 or 7:1.
6. the optical-fiber bundling device as described in any one of Claims 1 to 5, it is characterised in that many pumpings
One end of energy-transmission optic fibre sintered into by fused biconical taper mode it is a branch of, bored area cutting after with the front pump
The output end welding of Pu optical fiber, realizes pump light beam splitting.
7. optical-fiber bundling device as claimed in claim 6, it is characterised in that the pumping energy-transmission optic fibre and institute
One end of the fine welding of input pumping light is stated, adjacent pumping energy-transmission optic fibre is tangent, and outermost pumping passes energy
Optical fiber is inscribed within same circumference.
8. optical-fiber bundling device as claimed in claim 6, it is characterised in that many pumping energy-transmission optic fibres
The other end by be classified profile pump in the way of be connected with the covering of the signal optical fibre, realize pump light
Close beam.
9. optical-fiber bundling device as claimed in claim 8, it is characterised in that many pumping energy-transmission optic fibres
It is connected to the different length position of the signal optical fibre.
10. a kind of superpower laser, it is characterised in that including the light described in any one of claim 1~9
Fine bundling device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042230.3A CN106997074A (en) | 2016-01-22 | 2016-01-22 | A kind of high-power optical-fiber bundling device and laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610042230.3A CN106997074A (en) | 2016-01-22 | 2016-01-22 | A kind of high-power optical-fiber bundling device and laser |
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| CN106997074A true CN106997074A (en) | 2017-08-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201610042230.3A Pending CN106997074A (en) | 2016-01-22 | 2016-01-22 | A kind of high-power optical-fiber bundling device and laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108462028A (en) * | 2018-04-17 | 2018-08-28 | 中国工程物理研究院激光聚变研究中心 | Side pump-type fibre pump signal bundling device and preparation method thereof |
| CN113116516A (en) * | 2021-04-01 | 2021-07-16 | 广州迪光医学科技有限公司 | Laser coupling device |
| WO2022088307A1 (en) * | 2020-10-30 | 2022-05-05 | 山东海富光子科技股份有限公司 | High-power all-fiber laser beam combiner capable of adjusting shape of output beams |
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| WO2022088307A1 (en) * | 2020-10-30 | 2022-05-05 | 山东海富光子科技股份有限公司 | High-power all-fiber laser beam combiner capable of adjusting shape of output beams |
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