CN102081195A - Device and method for coupling double cladding optical fiber laser - Google Patents
Device and method for coupling double cladding optical fiber laser Download PDFInfo
- Publication number
- CN102081195A CN102081195A CN 201010549751 CN201010549751A CN102081195A CN 102081195 A CN102081195 A CN 102081195A CN 201010549751 CN201010549751 CN 201010549751 CN 201010549751 A CN201010549751 A CN 201010549751A CN 102081195 A CN102081195 A CN 102081195A
- Authority
- CN
- China
- Prior art keywords
- optical fiber
- fiber
- laser
- fibre
- cladding
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Lasers (AREA)
Abstract
The invention relates to the field of optical fiber transmission and aims to provide a device and method for coupling a double cladding optical fiber laser. The device comprises a double cladding optical fiber, and the double cladding optical fiber is formed by a cored optical fiber zone and a coreless optical fiber zone which are closely parallel to each other in an inner side coupling manner, wherein the coreless optical fiber zone is connected with externally connected power transmission optical fibers, and the other ends of the power transmission optical fibers are provided with a laser light pump. The optical fibers in one of the cored inner cladding zone are used for obtaining lasers, and the other inner cladding zone is used for pumping so as to couple semiconductor pumped lasers in the power transmission optical fibers into the inner cladding layers of the double cladding optical fiber. The invention has the characteristics of high coupling power, and the like, and a plurality of pumped power transmission optical fibers can be connected to one double cladding optical fiber for realizing multiple-point coupling. The invention is applicable to high-power optical fiber lasers or amplifiers.
Description
Technical field:
The present invention relates to the Optical Fiber Transmission field, particularly doubly clad optical fiber and be used for laser coupled device and method between the energy-transmission optic fibre of pumping laser in high-capacity optical fiber laser or the amplifier.
Background technology:
In powerful fiber laser and fiber amplifier, need the semiconductor pumped laser in the energy-transmission optic fibre be transferred in the inner cladding of doubly clad optical fiber.If the diameter of two optical fiber is identical or close, then directly the end face of two optical fiber is welded together, if the diameter difference of two optical fiber is bigger, then adopt discrete optical element the first collimation of the laser in the energy-transmission optic fibre, focus on then in the inner cladding of coupled into double-clad fiber on the end face of doubly clad optical fiber.Directly the method for welding is that pad always produces certain loss, and the tolerant laser power of pad is less than the damage threshold of optical fiber itself usually.And the laser that produces in the fibre core of doubly clad optical fiber turns back in the energy-transmission optic fibre easily, causes the damage of the laser diode pumping source that links together with energy-transmission optic fibre.Method with discrete optical element coupling is risen by doubly clad optical fiber end face temperature, and end face can be destroyed during as the arrival laser-damaged threshold value, limited the coupling of pumping laser between optical fiber.
Summary of the invention:
The objective of the invention is in order to overcome deficiency of the prior art, a kind of laser coupled device and method that reduces the restriction of fiber end face laser-damaged threshold value is provided, can carry out pumping at the energy-transmission optic fibre of welding more than 2 on the position on the inner cladding of a doubly clad optical fiber, connect by multistage optical fiber, realize a plurality of somes pumpings, avoided concentrating very big laser power, improved laser greatly and can obtain power at fiber end face.
Specifically, technical solution of the present invention is as follows:
A kind of double-cladding fiber laser coupling device comprises a doubly clad optical fiber, and described doubly clad optical fiber is formed by the inner side coupling scheme by 2 close parallel have core fibre district and coreless fiber districts arranged side by side; Described coreless fiber district links to each other with external energy-transmission optic fibre, and the other end of described energy-transmission optic fibre is provided with laser light pump.
As a further improvement on the present invention, described energy-transmission optic fibre has 2, is connected on respectively on the two ends in described coreless fiber district.
As a further improvement on the present invention, described coreless fiber is divided into more than 2 sections, and every section two ends all are connected to described energy-transmission optic fibre respectively and link to each other.
As a further improvement on the present invention, described doubly clad optical fiber constitutes by linking to each other more than at least 2 sections, and the end face that the core fibre district is arranged of each section links to each other in twos, and the coreless fiber district of each section links to each other in twos with the end face of external described energy-transmission optic fibre respectively.
As a further improvement on the present invention, the described opposing end faces that is connected in twos polishes the back laser bonding and links to each other.
It is as a further improvement on the present invention, described that the core in core fibre district is arranged is the fibre core that is mixed with rare earth.
As a further improvement on the present invention, described fibre core is single mode or multimode, and fibre core is the single-mode optics fibre core less than 10 micron dimensions, is the multimode fibre core greater than 10 micron dimensions.
As a further improvement on the present invention, described the cross section in core fibre district and coreless fiber district is arranged is polygon, as long as there is a plane in 2 zones, just can combine closely in 2 zones.Generally mostly be sexangle or octagon, because sexangle and anise be relatively near circular, therefore can be better and external circular energy-transmission optic fibre welding.
As a further improvement on the present invention, described laser light pump is the semiconductor laser optical pumping that has tail optical fiber.
The invention also discloses a kind of method of novel doubly clad optical fiber coupling, the steps include: earlier one section coat of doubly clad optical fiber to be removed, expose inner cladding, and 2 parts of inner cladding are distinguished; Again the coat of another root energy-transmission optic fibre is removed, expose fibre core, with laser bonding the surface of contact of the centreless inner cladding of doubly clad optical fiber and energy-transmission optic fibre fibre core is polished and welds then and fuse together, the pumping laser that transmits in energy-transmission optic fibre so just can be transferred in the rare earth doped fiber that can obtain laser by doubly clad optical fiber.
Apparatus of the present invention are the optical fiber with 2 inner cladding regions, one has the in-core clad region to obtain laser, an inner cladding region is as pumping, so that the semiconductor pumped laser coupled in the energy-transmission optic fibre is advanced in the inner cladding of doubly clad optical fiber, it is big to have coupled power, can connect characteristics such as a plurality of pumping energy-transmission optic fibres on a doubly clad optical fiber.Technical solution principle of the present invention is: the one section surrounding layer and the coat of energy-transmission optic fibre and novel doubly clad optical fiber are removed, centreless inner cladding with energy-transmission optic fibre fibre core and novel doubly clad optical fiber welds then, the laser of its transmission is not because the refractive index of air much smaller than the refractive index of fiber optic materials, therefore can leak.The present invention has core district and centreless district effectively to be coupled by novel optical fiber, can make optical-fiber laser obtain higher laser power.
The present invention can be applied in high-capacity optical fiber laser or the amplifier, and it is big to have the laser power that can bear simultaneously, can realize characteristics such as multiple spot coupling.
Description of drawings:
Fig. 1 is the structural representation of double-cladding fiber laser coupling device of the present invention.
Fig. 2 is the cut-open view of the doubly clad optical fiber end face among Fig. 1.
Fig. 3 is a specific embodiment of the present invention.
Embodiment:
The present invention is described in further detail below in conjunction with the drawings and specific embodiments:
Shown in Figure 1 is double-cladding fiber laser coupling device of the present invention, comprise a doubly clad optical fiber, this doubly clad optical fiber can see clearly in Fig. 2 that in the inside of coat 4 being is hexagonally to have core fibre district 1 and coreless fiber district 2 close parallel ground to arrange to constitute by 2 cross sections, the core that core fibre district 1 is wherein arranged is the fibre core 3 that is mixed with rare earth, and the two can form the transmission of inner side coupling scheme like this.
In Fig. 1, the two ends in coreless fiber district 2 respectively are circumscribed with an energy-transmission optic fibre 6, and the other end of this energy-transmission optic fibre 6 is provided with a semiconductor laser optical pumping 8 that has tail optical fiber; During making, be earlier doubly clad optical fiber to be removed a bit of coat 4 on the position of an outer end, make the short as far as possible and closely contact of exposed part, generally no longer than 10 centimetres, again 2 clad regions are separated from each other, be formed with mix rare earth core fibre district 1 and coreless fiber district 2 arranged; The end that will be used for the energy-transmission optic fibre 6 of pumping semiconductor laser then, also remove a bit of coat 5, be formed with the end, then the exposed coreless fiber of doubly clad optical fiber district 2 is polished and abuts against with energy-transmission optic fibre 6 exposed fibre core end faces, adopt laser welding method, on the surface of contact of two optical fiber, produce fused layers 7, like this can be with semiconductor pumped laser coupled to having in the core fibre district 1 and forming laser by energy-transmission optic fibre 6.
As shown in Figure 3, for example as a full fiberize fiber laser of output laser power 10W, the core diameter of the doubly clad optical fiber after the fiber grating 9 is 20 μ m, the inner cladding diameter is 200 μ m, the laser diode that needs two 10W is as optical pumping 8, and the output optical fibre of laser diode optical pumping 8 is the energy-transmission optic fibre of 200 μ m.In the place of doubly clad optical fiber near fiber grating, keep at a certain distance away and remove two sections surrounding layers and coat respectively, also each removes one section coat respectively to the output terminal of 2 laser diode output optical fibres, then the 200 μ m fibre cores of removing coat are abutted against doubly clad optical fiber and remove on the inner cladding of coat, the surface of contact of two optical fiber is welded together with laser welding method.Make bigger fiber laser if desired, also can will on the position 10 of end face separately, weld respectively on 2 sections doubly clad optical fibers, can obtain more laser power, as obtaining 20W power with 2 sections optical fiber among the figure, wherein fiber grating and output end face are formed laser cavity.
Certainly the double-cladding fiber laser coupling device of the present invention of more segmentations can also be linked to each other one by one, to obtain more strong big laser power and transmission range.
At last, it is also noted that what more than enumerate only is a specific embodiment of the present invention.Obviously, the present invention can also have many distortion, and all distortion that those of ordinary skill in the art can directly derive or associate from content disclosed by the invention all should be thought protection scope of the present invention.
Claims (10)
1. a double-cladding fiber laser coupling device comprises a doubly clad optical fiber, it is characterized in that, described doubly clad optical fiber is formed by the inner side coupling scheme by 2 close parallel have core fibre district (1) and coreless fiber district (2) arranged side by side; Described coreless fiber district (2) links to each other with external energy-transmission optic fibre (6), and the other end of described energy-transmission optic fibre (6) is provided with laser light pump (8).
2. double-cladding fiber laser coupling device according to claim 1 is characterized in that, described energy-transmission optic fibre (6) has 2, is connected on respectively on the two ends in described coreless fiber district (2).
3. double-cladding fiber laser coupling device according to claim 2 is characterized in that, described coreless fiber district (2) is divided into more than 2 sections, and every section two ends all are connected to described energy-transmission optic fibre (6) respectively and link to each other.
4. according to each described double-cladding fiber laser coupling device in the claim 1 to 3, it is characterized in that, described doubly clad optical fiber constitutes by linking to each other more than at least 2 sections, the end face that core fibre district (1) is arranged of each section links to each other in twos, and the coreless fiber district (2) of each section links to each other in twos with the end face of external described energy-transmission optic fibre (6) respectively.
5. double-cladding fiber laser coupling device according to claim 4 is characterized in that, the described opposing end faces that is connected in twos polishes the back laser bonding and links to each other.
6. double-cladding fiber laser coupling according to claim 1 becomes to attach together to be put, and it is characterized in that, described the core in core fibre district (1) is arranged is the fibre core (3) that is mixed with rare earth.
7. double-cladding fiber laser coupling device according to claim 6 is characterized in that, described fibre core (3) is single mode or multimode.
8. double-cladding fiber laser coupling device according to claim 1 is characterized in that, described the cross section of core fibre district (1) and coreless fiber district (2) is arranged is polygon.
9. double-cladding fiber laser coupling device according to claim 1 is characterized in that, described laser light pump (8) is for having the semiconductor laser optical pumping of tail optical fiber.
10. a realization the steps include: earlier one section coat of doubly clad optical fiber to be removed according to the method for the doubly clad optical fiber coupling of claim 1, exposes inner cladding, and 2 parts of inner cladding are distinguished; Again the coat of another root energy-transmission optic fibre is removed, expose fibre core, with laser bonding the surface of contact of the centreless inner cladding of doubly clad optical fiber and energy-transmission optic fibre fibre core is polished and welds then and fuse together, the pumping laser that transmits in energy-transmission optic fibre so just can be transferred in the rare earth doped fiber that can obtain laser by doubly clad optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010549751 CN102081195A (en) | 2010-11-18 | 2010-11-18 | Device and method for coupling double cladding optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010549751 CN102081195A (en) | 2010-11-18 | 2010-11-18 | Device and method for coupling double cladding optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102081195A true CN102081195A (en) | 2011-06-01 |
Family
ID=44087265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010549751 Pending CN102081195A (en) | 2010-11-18 | 2010-11-18 | Device and method for coupling double cladding optical fiber laser |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102081195A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102436036A (en) * | 2011-12-16 | 2012-05-02 | 烽火通信科技股份有限公司 | Optical fiber beam combiner and manufacturing method thereof |
| CN102513693A (en) * | 2011-11-04 | 2012-06-27 | 杭州奥克光电设备有限公司 | High-power optical fiber laser welding machine |
| CN103490271A (en) * | 2013-09-03 | 2014-01-01 | 华中科技大学 | Optical fiber and fiber laser comprising optical fiber |
| CN103944051A (en) * | 2014-05-15 | 2014-07-23 | 中国工程物理研究院应用电子学研究所 | Side-by-side side pump coupler and preparation method thereof |
| CN109085677A (en) * | 2017-06-14 | 2018-12-25 | 福州高意光学有限公司 | A kind of high-power optical-fiber coupling structure of ultralow Insertion Loss |
| US11685357B2 (en) | 2018-01-30 | 2023-06-27 | Robert Bosch Gmbh | Communication method between a brake booster of a vehicle and an ESP control unit of the vehicle, and a brake system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6434302B1 (en) * | 1998-03-04 | 2002-08-13 | Jds Uniphase Corporation | Optical couplers for multimode fibers |
| CN1461082A (en) * | 2003-05-30 | 2003-12-10 | 阎长鹍 | Optical fibre lateral edge coupling method of pumping light source |
| CN101609179A (en) * | 2009-07-08 | 2009-12-23 | 中国科学院上海光学精密机械研究所 | Multi-joint coupling type double-clad optical fiber and preparation method thereof |
| CN101833132A (en) * | 2010-05-18 | 2010-09-15 | 中国科学院上海光学精密机械研究所 | Method for laser coupling between optical fibers |
| CN201955492U (en) * | 2010-11-18 | 2011-08-31 | 杭州华威药业有限公司 | Doubly clad optical fiber laser coupling device |
-
2010
- 2010-11-18 CN CN 201010549751 patent/CN102081195A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6434302B1 (en) * | 1998-03-04 | 2002-08-13 | Jds Uniphase Corporation | Optical couplers for multimode fibers |
| CN1461082A (en) * | 2003-05-30 | 2003-12-10 | 阎长鹍 | Optical fibre lateral edge coupling method of pumping light source |
| CN101609179A (en) * | 2009-07-08 | 2009-12-23 | 中国科学院上海光学精密机械研究所 | Multi-joint coupling type double-clad optical fiber and preparation method thereof |
| CN101833132A (en) * | 2010-05-18 | 2010-09-15 | 中国科学院上海光学精密机械研究所 | Method for laser coupling between optical fibers |
| CN201955492U (en) * | 2010-11-18 | 2011-08-31 | 杭州华威药业有限公司 | Doubly clad optical fiber laser coupling device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102513693A (en) * | 2011-11-04 | 2012-06-27 | 杭州奥克光电设备有限公司 | High-power optical fiber laser welding machine |
| CN102513693B (en) * | 2011-11-04 | 2014-08-06 | 杭州奥克光电设备有限公司 | High-power optical fiber laser welding machine |
| CN102436036A (en) * | 2011-12-16 | 2012-05-02 | 烽火通信科技股份有限公司 | Optical fiber beam combiner and manufacturing method thereof |
| CN103490271A (en) * | 2013-09-03 | 2014-01-01 | 华中科技大学 | Optical fiber and fiber laser comprising optical fiber |
| CN103944051A (en) * | 2014-05-15 | 2014-07-23 | 中国工程物理研究院应用电子学研究所 | Side-by-side side pump coupler and preparation method thereof |
| CN103944051B (en) * | 2014-05-15 | 2017-02-01 | 中国工程物理研究院应用电子学研究所 | Side-by-side side pump coupler and preparation method thereof |
| CN109085677A (en) * | 2017-06-14 | 2018-12-25 | 福州高意光学有限公司 | A kind of high-power optical-fiber coupling structure of ultralow Insertion Loss |
| US11685357B2 (en) | 2018-01-30 | 2023-06-27 | Robert Bosch Gmbh | Communication method between a brake booster of a vehicle and an ESP control unit of the vehicle, and a brake system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3987840B2 (en) | Cladding pump optical fiber gain device | |
| US7327920B2 (en) | Optical fiber pump multiplexer | |
| US8085464B2 (en) | Multi-clad optical fibre amplifier with optimized pumping | |
| CN201955492U (en) | Doubly clad optical fiber laser coupling device | |
| JP4866788B2 (en) | Manufacturing method of fiber bundle | |
| WO2014132990A1 (en) | Optical-fiber-bundle structure, rare-earth-doped multi-core fiber, connection structure therefor, method for exciting rare-earth-doped multi-core fibers, and multi-core-optical-fiber amplifier | |
| US8320039B2 (en) | Cladding-pumped optical amplifier having reduced susceptibility to spurious lasing | |
| CN102081195A (en) | Device and method for coupling double cladding optical fiber laser | |
| US11808973B2 (en) | Optical fiber splice encapsulated by a cladding light stripper | |
| CN101794955A (en) | Full optical fiber laser synthesizer and preparation method thereof | |
| CN102944915A (en) | Optical fiber connecting method | |
| CA2354783A1 (en) | Convex polygon-shaped all-glass multi-clad optical fiber and method of fabrication thereof | |
| CN101833132A (en) | Method for laser coupling between optical fibers | |
| JP2009271108A (en) | Optical combiner, and method for manufacturing the same | |
| JP5020509B2 (en) | Optical fiber type pump combiner, optical fiber amplifier and optical fiber laser | |
| JP3353755B2 (en) | Optical fiber amplifier | |
| CN102081190A (en) | Double-clad laser fiber and laser coupling method thereof | |
| US9768581B2 (en) | Pump and signal combiner for high numerical aperture use | |
| CN101403810B (en) | Pump coupling structure of double-cladding optical fiber laser | |
| CN115663578A (en) | Optical fiber laser amplifier based on multi-gully and pumping-gain integrated technology | |
| CN102183813B (en) | Optical fiber structure with spotlighting layer | |
| CN201937160U (en) | Low-power optical fiber laser device | |
| JP2010232634A (en) | Optical combiner and fiber laser using the same | |
| US9362709B1 (en) | Optical fiber laser architecture with partitioned pump and signal coupling | |
| CN214375389U (en) | Optical fiber combiner |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110601 |