CN105116494A - Pump beam combiner and production method thereof - Google Patents
Pump beam combiner and production method thereof Download PDFInfo
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- CN105116494A CN105116494A CN201510634013.9A CN201510634013A CN105116494A CN 105116494 A CN105116494 A CN 105116494A CN 201510634013 A CN201510634013 A CN 201510634013A CN 105116494 A CN105116494 A CN 105116494A
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- optical fiber
- fiber
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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
- G02B6/255—Splicing of light guides, e.g. by fusion or bonding
Abstract
The invention provides a pump beam combiner and a production method thereof. The pump beam combiner comprises a signal input optical fiber, a transitional optical fiber, an output optical fiber and at least two pump optical fibers, wherein a first end of the transitional optical fiber is connected with the signal input optical fiber in a fusion manner, the transitional optical fiber is provided with at least two coupling areas, the coupling areas are uniformly distributed along the circumferential direction, the output optical fiber is connected with a second end of the transitional optical fiber in a fusion manner, and one pump optical fiber is connected with one coupling area by virtue of a fused biconical taper way. The invention also relates to the method of producing the pump beam combiner. By virtue of the setting of the transitional optical fiber and length control, as well as length and size control for the transitional optical fiber, parameters such as insertion loss, pump optical coupling efficiency, polarization extinction ratio and the like can be optimized, and the optimized control of a packaging way can be facilitated.
Description
Technical field
The present invention relates to laser field, particularly relate to the method for making of a kind of pump combiner and this pump combiner.
Background technology
Fiber pump combiner have easy to use, coupling efficiency is high, integrated level advantages of higher, oneself becomes pump coupling mode main in fiber laser, wherein, the main composition of fiber pump combiner comprises the fibre-optic waveguide structure after drawing cone shaping and encapsulating structure.
The encapsulating structure of existing fiber pump combiner is general more complicated, due to when the size of signal input optical fibre differs larger with the size of output optical fibre, then can cause as large in core diameter, cladding diameter difference, then card fibre core insertion loss, pump coupling efficiency is comparatively difficult to ensure, or make the more difficult encapsulation of pump combiner, and when fiber core and fibre cladding are the larger polarization maintaining optical fibre of difference, be also the polarization extinction ratio being comparatively difficult to ensure card pump combiner.
Summary of the invention
The first object of the present invention is to provide a kind ofly has excellent insertion loss and coupling efficiency and the pump combiner of convenient encapsulation.
The second object of the present invention is to provide a kind ofly has excellent insertion loss and coupling efficiency and the pump combiner method for making of convenient encapsulation.
In order to realize the first object of the present invention, the invention provides a kind of pump combiner, comprise signal input optical fibre, transition optical fiber, output optical fibre and at least two pumping optical fibers, the first end of transition optical fiber and the welding of signal input optical fibre, transition optical fiber is provided with at least two coupled zones, coupled zone is uniformly distributed circumferentially, the second end welding of output optical fibre and transition optical fiber, and a pumping optical fiber is connected by fused biconical taper mode with a coupled zone.
From such scheme, by arranging transition optical fiber between signal input optical fibre and output optical fibre, and this transition optical fiber is provided with coupled zone, then pumping optical fiber is connected with coupled zone, light signal is transmitted at transition optical fiber fibre core, and coupling pump light enters the covering of transition optical fiber, by the setting of transition optical fiber, and to the length of transition optical fiber and size Control, can realize optimizing the parameters such as insertion loss, coupling pump light efficiency, polarization extinction ratio, by being also conducive to the optimal control of packaged type.
Further scheme is, signal input optical fibre comprises the first fibre cladding and the first fiber core, transition optical fiber comprises the second fibre cladding and the second fiber core, the external diameter of the second fibre cladding equals the external diameter of the first fibre cladding, and the diameter of the second fiber core is more than or equal to the diameter of the first fiber core.
Further scheme is, signal input optical fibre comprises the first fibre cladding and the first fiber core, transition optical fiber comprises the second fibre cladding and the second fiber core, the external diameter of the second fibre cladding is more than or equal to the external diameter of the first fibre cladding, and the diameter of the second fiber core equals the diameter of the first fiber core.
Therefore adjusted by the size different to transition optical fiber, be conducive to adjusting pump combiner according to practical application scene, enable pump combiner adapt to various application scenarios, its applicability is extensive.
Further scheme is, the diameter of output optical fibre is greater than the diameter of transition optical fiber.
Therefore, effectively can be mated the Active Optical Fiber of same diameter by larger-diameter output optical fibre, facilitate its mutual welding and coupling.
Further scheme is, transition optical fiber is conical fiber.
Further scheme is, signal input optical fibre comprises the first fiber core, output optical fibre comprises the second fiber core, conical fiber comprises the 3rd fiber core, the diameter of the first end of the 3rd fiber core equals the first fiber core, and the diameter of the second end of the 3rd fiber core equals the second fiber core.
Further scheme is, the diameter of output optical fibre is greater than the diameter of signal input optical fibre.
Therefore, further can be improved the coupling efficiency of pump light by the setting of conical fiber, also be conducive to the Active Optical Fiber mating same diameter simultaneously, facilitate its mutual welding and coupling.
In order to realize the second object of the present invention, the invention provides a kind of pump combiner method for making, this method for making comprises: by the step of the first end welding of signal input optical fibre and transition optical fiber; By the step that pumping optical fiber is connected by the coupled zone that fused biconical taper mode and transition optical fiber are positioned in circumference; By the second end of transition optical fiber and the step of output optical fibre welding.
Further scheme is, before by the second end of transition optical fiber and the step of output optical fibre welding, pump combiner method for making also comprises: the step of excising unnecessary transition optical fiber.
From such scheme, by arranging transition optical fiber between signal input optical fibre and output optical fibre, and this transition optical fiber is provided with coupled zone, the transition optical fiber of weldable length-specific when making pump combiner, or as required cutting is carried out to transition optical fiber after welding signal input optical fibre, then pumping optical fiber is connected with coupled zone, light signal is transmitted at transition optical fiber fibre core, and coupling pump light enters the covering of transition optical fiber, by the setting of transition optical fiber, and to the length of transition optical fiber and size Control, can realize optimizing insertion loss, coupling pump light efficiency, the parameters such as polarization extinction ratio, by being also conducive to the optimal control of packaged type.
Accompanying drawing explanation
Fig. 1 is the process flow diagram of pump combiner method for making embodiment of the present invention.
Fig. 2 is pump combiner structural drawing in a first state in pump combiner method for making embodiment of the present invention.
Fig. 3 is pump combiner structural drawing in the second condition in pump combiner method for making embodiment of the present invention.
Fig. 4 is pump combiner structural drawing in a third condition in pump combiner method for making embodiment of the present invention.
Fig. 5 is the structural drawing of pump combiner first embodiment of the present invention.
Fig. 6 is the structural drawing of pump combiner second embodiment of the present invention.
Fig. 7 is the structural drawing of pump combiner of the present invention 3rd embodiment.
Below in conjunction with drawings and Examples, the invention will be further described.
Embodiment
Pump combiner method for making embodiment:
With reference to Fig. 1, Fig. 2 and Fig. 5, Fig. 1 is the process flow diagram of pump combiner method for making, and Fig. 2 is starting the first structure graph when making pump combiner, and Fig. 5 is the structural drawing of pump combiner first embodiment after making.Pump combiner comprises signal input optical fibre 1, transition optical fiber 2, pumping optical fiber 31, pumping optical fiber 32 and output optical fibre 41.When starting to make pump combiner, first step S11 is performed, because signal input optical fibre 1 comprises coat 11, fibre cladding 12 and the fiber core 13 arranged with wrapping up successively from outside to inside, transition optical fiber 2 comprises the coat 21, fibre cladding 22 and the fiber core 23 that arrange with wrapping up successively from outside to inside, therefore after first coat 11 and coat 21 being removed one section, by the first end welding of signal input optical fibre 1 and transition optical fiber 2.As seen from Figure 2, the external diameter of fibre cladding 12 equals the external diameter of fibre cladding 22, and the diameter of fiber core 23 is greater than the diameter of fiber core 13.
With reference to Fig. 3, after execution of step S11, then perform step S12, pumping optical fiber 31 is connected with transition optical fiber 2 by fused biconical taper mode with pumping optical fiber 32, particularly, the part of transition optical fiber 2 after removing coat 21 arranges two coupled zones, the circumference that two coupled zones are positioned at transition optical fiber 2 distributes equably, and coupled zone is the coupled zone making pumping optical fiber and signal output optical fibre be formed at transition optical fiber place by the mode of fused biconical taper, and pumping optical fiber 31 is connected with coupled zone by fused biconical taper mode with pumping optical fiber 32.
With reference to Fig. 4, after execution of step S12, then perform step S13, control the length of transition optical fiber 2 according to parameters such as the insertion loss of bundling device, coupling pump light efficiency and polarization extinction ratios, and excise unnecessary transition optical fiber 2.With reference to Fig. 5, perform step S14 subsequently, by the second end of transition optical fiber 2 and output optical fibre 41 welding, particularly, the diameter of output optical fibre 41 is greater than the diameter of transition optical fiber.Just the making of pump combiner first embodiment can be completed according to above step.
Pump combiner second embodiment:
With reference to Fig. 6, under the same principle of above-described embodiment, transition optical fiber also can adopt transition optical fiber 51 as shown in Figure 6, output optical fibre can adopt output optical fibre 42 as shown in Figure 6, particularly, the external diameter of the fibre cladding of transition optical fiber 51 is greater than the external diameter of the fibre cladding of signal input optical fibre, the diameter of the fiber core of transition optical fiber 51 equals the diameter of the fiber core of signal input optical fibre, the diameter of output optical fibre 42 is greater than the diametrically setting of transition optical fiber 51, and the fiber core of output optical fibre 42 is arranged with being greater than the fiber core of transition optical fiber 51.
Pump combiner the 3rd embodiment:
With reference to Fig. 7, under the same principle of above-described embodiment, transition optical fiber also can adopt transition optical fiber 52 as shown in Figure 7, output optical fibre can adopt output optical fibre 43 as shown in Figure 7, particularly, transition optical fiber 52 is conical fiber, and the fiber core of transition optical fiber 52 is arranged also taperedly, the first end of transition optical fiber 52 and the welding of signal output optical fibre, second end of transition optical fiber 52 and output optical fibre 43 welding, the diameter of the first end of the fiber core of transition optical fiber 52 equals the fiber core of signal input optical fibre, the diameter of the second end of the fiber core of transition optical fiber 52 equals the fiber core of output optical fibre, the diameter of the second end of transition optical fiber 52 is greater than the diameter of the first end of transition optical fiber 52, the diameter of output optical fibre 43 is greater than the diameter of signal input optical fibre.
Therefore, by arranging transition optical fiber between signal input optical fibre and output optical fibre, and this transition optical fiber is provided with coupled zone, the transition optical fiber of weldable length-specific when making pump combiner, or as required cutting is carried out to transition optical fiber after welding signal input optical fibre, then pumping optical fiber is connected with coupled zone, light signal is transmitted at transition optical fiber fibre core, and coupling pump light enters the covering of transition optical fiber, by the setting of transition optical fiber, and to the length of transition optical fiber and size Control, can realize optimizing insertion loss, coupling pump light efficiency, the parameters such as polarization extinction ratio, by being also conducive to the optimal control of packaged type.
Above-described embodiment is preferred embodiment of the present invention, more change can be had when practical application, quantity as pumping optical fiber is not only limited to two, also the six roots of sensation or more is adopted as required, the size of such as transition optical fiber can have more selection again, external diameter as the fibre cladding of transition optical fiber equals the external diameter of the fibre cladding of signal input optical fibre, the diameter of the fiber core of transition optical fiber is more than or equal to the diameter of the fiber core of signal input optical fibre, and for example the external diameter of the fibre cladding of transition optical fiber is more than or equal to the external diameter of the fibre cladding of signal input optical fibre, the diameter of the fiber core of transition optical fiber equals the diameter of the fiber core of signal input optical fibre.The first welding transition optical fiber of such as signal optical fibre again, then transition optical fiber and output optical fibre welding, finally realizes being coupled of pumping optical fiber and transition optical fiber by fused biconical taper mode again.These above-mentioned changes all can realize object of the present invention.
Claims (10)
1. pump combiner, comprises
Signal input optical fibre;
It is characterized in that:
Transition optical fiber, the first end of described transition optical fiber and the welding of described signal input optical fibre, described transition optical fiber is provided with at least two coupled zones, and described coupled zone is uniformly distributed circumferentially;
Output optical fibre, the second end welding of described output optical fibre and described transition optical fiber;
At least two pumping optical fibers, a described pumping optical fiber is connected by fused biconical taper mode with a described coupled zone.
2. pump combiner according to claim 1, is characterized in that:
Described signal input optical fibre comprises the first fibre cladding and the first fiber core;
Described transition optical fiber comprises the second fibre cladding and the second fiber core, and the external diameter of described second fibre cladding equals the external diameter of described first fibre cladding, and the diameter of described second fiber core is more than or equal to the diameter of described first fiber core.
3. pump combiner according to claim 1, is characterized in that:
Described signal input optical fibre comprises the first fibre cladding and the first fiber core;
Described transition optical fiber comprises the second fibre cladding and the second fiber core, and the external diameter of described second fibre cladding is more than or equal to the external diameter of described first fibre cladding, and the diameter of described second fiber core equals the diameter of described first fiber core.
4. the pump combiner according to any one of claims 1 to 3, is characterized in that:
The diameter of described output optical fibre is greater than the diameter of described transition optical fiber.
5. pump combiner according to claim 1, is characterized in that:
Described transition optical fiber is conical fiber.
6. pump combiner according to claim 5, is characterized in that:
Described signal input optical fibre comprises the first fiber core, described output optical fibre comprises the second fiber core, described conical fiber comprises the 3rd fiber core, the diameter of the first end of described 3rd fiber core equals described first fiber core, and the diameter of the second end of described 3rd fiber core equals described second fiber core.
7. the pump combiner according to claim 5 or 6, is characterized in that:
The diameter of described output optical fibre is greater than the diameter of described signal input optical fibre.
8. pump combiner method for making, is characterized in that,
Described method for making comprises:
By the step of the first end welding of signal input optical fibre and transition optical fiber;
By the step that pumping optical fiber is connected by the coupled zone that fused biconical taper mode and described transition optical fiber are positioned in circumference;
By the second end of described transition optical fiber and the step of output optical fibre welding.
9. pump combiner method for making according to claim 8, is characterized in that:
Before by the second end of described transition optical fiber and the step of output optical fibre welding, described pump combiner method for making also comprises:
Excise the step of unnecessary described transition optical fiber.
10. pump combiner method for making according to claim 8 or claim 9, is characterized in that:
Described transition optical fiber is conical fiber, and the diameter of the second end of described transition optical fiber is greater than the diameter of the first end of described transition optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510634013.9A CN105116494A (en) | 2015-09-28 | 2015-09-28 | Pump beam combiner and production method thereof |
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|---|---|---|---|
| CN201510634013.9A CN105116494A (en) | 2015-09-28 | 2015-09-28 | Pump beam combiner and production method thereof |
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Cited By (3)
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| CN107017551A (en) * | 2017-05-27 | 2017-08-04 | 中国工程物理研究院应用电子学研究所 | It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side |
| CN107134710A (en) * | 2017-06-19 | 2017-09-05 | 中科先为激光科技（北京）有限公司 | End-pump coupler and preparation method thereof |
| CN110441856A (en) * | 2019-09-06 | 2019-11-12 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of polarization maintaining optical fibre pump combiner and its producing device and method |
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| CN102890312A (en) * | 2011-12-30 | 2013-01-23 | 清华大学 | Large-mode-field fiber pumped coupler and manufacturing method thereof |
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| CN104166183A (en) * | 2014-08-25 | 2014-11-26 | 中国电子科技集团公司第十一研究所 | Double-clad fiber and photonic crystal fiber connecting method |
| CN104280822A (en) * | 2014-10-31 | 2015-01-14 | 中国人民解放军国防科学技术大学 | High-power weak-tapering low-loss pumping/signal combiner |
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| EP2071375A1 (en) * | 2007-12-14 | 2009-06-17 | Corelase OY | Means of coupling light into optical fibers and methods of manufacturing a coupler |
| WO2013038761A1 (en) * | 2011-09-16 | 2013-03-21 | 株式会社フジクラ | Pump combiner, bridge fiber, and fiber laser |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107017551A (en) * | 2017-05-27 | 2017-08-04 | 中国工程物理研究院应用电子学研究所 | It is a kind of（2+1）Melt the method for packing of tapered fiber pump combiner in × 1 side |
| CN107134710A (en) * | 2017-06-19 | 2017-09-05 | 中科先为激光科技（北京）有限公司 | End-pump coupler and preparation method thereof |
| CN110441856A (en) * | 2019-09-06 | 2019-11-12 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | A kind of polarization maintaining optical fibre pump combiner and its producing device and method |
| CN110441856B (en) * | 2019-09-06 | 2023-11-28 | 上海传输线研究所（中国电子科技集团公司第二十三研究所） | Polarization maintaining fiber pump beam combiner and manufacturing device and method thereof |
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Application publication date: 20151202 |