CN104345387A - Cladding power stripper for double-clad optical fibers - Google Patents
Cladding power stripper for double-clad optical fibers Download PDFInfo
- Publication number
- CN104345387A CN104345387A CN201410612251.5A CN201410612251A CN104345387A CN 104345387 A CN104345387 A CN 104345387A CN 201410612251 A CN201410612251 A CN 201410612251A CN 104345387 A CN104345387 A CN 104345387A
- Authority
- CN
- China
- Prior art keywords
- absorption layer
- optical fiber
- power stripper
- cladding
- doping
- 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
Classifications
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4266—Thermal aspects, temperature control or temperature monitoring
- G02B6/4268—Cooling
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4201—Packages, e.g. shape, construction, internal or external details
- G02B6/4266—Thermal aspects, temperature control or temperature monitoring
- G02B6/4268—Cooling
- G02B6/4269—Cooling with heat sinks or radiation fins
-
- 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
- G02B6/42—Coupling light guides with opto-electronic elements
- G02B6/4298—Coupling light guides with opto-electronic elements coupling with non-coherent light sources and/or radiation detectors, e.g. lamps, incandescent bulbs, scintillation chambers
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01S—DEVICES USING THE PROCESS OF LIGHT AMPLIFICATION BY STIMULATED EMISSION OF RADIATION [LASER] TO AMPLIFY OR GENERATE LIGHT; DEVICES USING STIMULATED EMISSION OF ELECTROMAGNETIC RADIATION IN WAVE RANGES OTHER THAN OPTICAL
- H01S3/00—Lasers, i.e. devices using stimulated emission of electromagnetic radiation in the infrared, visible or ultraviolet wave range
- H01S3/05—Construction or shape of optical resonators; Accommodation of active medium therein; Shape of active medium
- H01S3/06—Construction or shape of active medium
- H01S3/063—Waveguide lasers, i.e. whereby the dimensions of the waveguide are of the order of the light wavelength
- H01S3/067—Fibre lasers
- H01S3/06708—Constructional details of the fibre, e.g. compositions, cross-section, shape or tapering
- H01S3/06729—Peculiar transverse fibre profile
- H01S3/06733—Fibre having more than one cladding
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- General Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Lasers (AREA)
Abstract
The invention provides a cladding power stripper for double-clad optical fibers. The cladding power stripper comprises the double-clad optical fibers, a doped absorption layer, a heat conduction layer, a heat sink and a water cooling channel, wherein an external cladding with low refractive index is removed from the double-clad optical fibers; an optical absorption layer doped with carbon powder or aluminum oxide is used as an optical fiber external cladding; the refractive index of a substrate material of the optical absorption layer is greater than or equal to that of an internal cladding of the optical fibers; after the doped absorption layer absorbs leaked light and converts the leaked light into heat, the heat is conducted to the inside of the heat sink by the heat conduction layer and then is taken away by cold water circulating in the water cooling channel. According to the cladding power stripper provided by the invention, residual light in the double cladding is stripped along the optical fibers and then is directly converted into heat in the doped absorption layer; on the basis that an optical fiber structure is not damaged, the power stripping capability of the cladding power stripper is greatly improved.
Description
Technical field
The invention belongs to high power optical fibre laser technical field, be specifically related to a kind of double clad fiber cladding power stripper, for high-capacity optical fiber laser.
Background technology
The advantages such as the beam quality that high-capacity optical fiber laser and amplifier have is excellent, heat dissipation characteristics is good, be easy to miniaturization, operating cost is cheap, making it replace conventional high power laser instrument gradually becomes the new selection of the applications such as industrial processes one.Exporting to realize high power laser light, all adopting double-cladding doped fiber as Active Optical Fiber in Fiber laser and amplifier, and adopting cladding pumping mode that pumping laser is injected Active Optical Fiber.But the existence of spiral light causes the pump light in optical fiber can not be doped fibre core absorption completely and form residual light in double clad fiber cladding.If residual light is directly exported by optical fiber laser output end, extra heat deposition can be brought to equipment such as the beam shapings of optical fiber laser output end, even can the quality of deteriorated output facula.Therefore, the residual light in fibre cladding is divested very necessary at optical fiber laser output end.Stripping mode conventional at present has two kinds, the first is exactly to optical fiber coating high index of refraction ultraviolet glue, residual light in optical fiber inner cladding can leak in high folding coat by this method, but coat absorbs uneven along optical fiber to the absorption of light, make a large amount of leak light in the regional area generation light-thermal transition of height folding coat, cause the height of organic compound folding coat overheated and produce abrupt oxidization, causing device performance severe weakness.Another kind method is exactly by optical fiber inner cladding surface roughening, the residual light in inner cladding is made directly to produce leakage on its surface, this method can peel off the residual light in inner cladding effectively, but in manufacturing process, be difficult to the roughness of control surface, and easily causes damage to optical fiber structure.
Summary of the invention
The object of the present invention is to provide a kind of power stripper leaked for fibre cladding light.Residual light is peeled off along doubly clad optical fiber by power stripper of the present invention, mix light absorbing medium and can realize doping absorption layer being uniformly distributed along optical fiber heat deposition by regulating along the doping content of optical fiber, in the equal maximum temperature peeling off optical power down low-power stripper, thus reduce the damage risk of covering power stripper, to improve its power stripping ability.
Realizing technical scheme of the present invention is:
Double clad fiber cladding power stripper of the present invention, is characterized in, described power stripper comprises doubly clad optical fiber, doping absorption layer, heat conduction layer, heat sink, water-cooling channel.Its annexation is, described power stripper profile is cylindric, is provided with the doubly clad optical fiber of a removal surrounding layer in columned axial centre, and the axial periphery of described doubly clad optical fiber is disposed with doping absorption layer, heat conduction layer, heat sink.Described heat sink on be provided with axial U-type groove; Described doping absorption layer, as the surrounding layer as doubly clad optical fiber, is converted to heat after the light absorption leaked out by doubly clad optical fiber.Described heat conduction layer is closely wrapped in outside doping absorption layer, and heat sinkly to fit tightly with described.Described heat sink in be provided with water-cooling channel vertically.
Described water-cooling channel distributes at heat sink cross-sectional uniformity.
The light absorbing medium adulterated in the base material of described doping absorption layer is carbon dust or aluminium oxide.
In described doping absorption layer, the doping of carbon dust or aluminium oxide is uniformly distributed along optical fiber.
In described doping absorption layer, the doping of carbon dust or aluminium oxide replaces with and increases progressively distribution along optical fiber.
The refractive index of the base material of described doping absorption layer is more than or equal to the refractive index of optical fiber inner cladding.
Described heat conduction layer is carbon dust.
In the present invention, preferably the host material of doping absorption layer is melt temperature higher than the crystalline material of 150 DEG C.Preferred heat sink material is brass or aluminium.Preferred water-cooling channel directly punches and forms in thermosphere.
The present invention can by the residual light in covering along optic fibre guide to doping absorption layer in and be converted into heat, make leak light be doped absorption layer uniform pickup.Contribute to hot being uniformly distributed in covering power stripper like this, and overcome traditional covering power stripper along the uneven heat deposition causing regional area concentrations of fiber distribution.Do not destroying on the basis of optical fiber structure, the power greatly improving covering power stripper divests ability.Because the heat deposition in covering power stripper of the present invention is evenly distributed, and heat deposition region becomes large, thus can be used in more high-power fiber ring laser system.
Accompanying drawing explanation
Fig. 1 is double clad fiber cladding power stripper diagrammatic cross-section of the present invention;
Fig. 2 is double clad fiber cladding power stripper cross sectional representation of the present invention;
In figure, 1. doubly clad optical fiber 2. adulterates heat sink 5. water-cooling channels of absorption layer 3. heat conduction layer 4..
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described
Embodiment 1
Fig. 1 is double clad fiber cladding power stripper diagrammatic cross-section of the present invention, and Fig. 2 is double clad fiber cladding power stripper cross sectional representation of the present invention.In Fig. 1 ~ Fig. 2, double clad fiber cladding power stripper of the present invention, comprises doubly clad optical fiber 1, doping absorption layer 2, heat conduction layer 3, heat sink 4, water-cooling channel 5; Its annexation is, described power stripper profile is cylindric, is provided with the doubly clad optical fiber 1 of a removal surrounding layer in columned axial centre, and the axial periphery of described doubly clad optical fiber 1 is disposed with doping absorption layer 2, heat conduction layer 3, heat sink 4; Described thermosphere 4 is provided with axial U-type groove; Described doping absorption layer 2, as the surrounding layer as doubly clad optical fiber 1, is converted to heat after the light absorption that doubly clad optical fiber 1 is leaked out; Described heat conduction layer 3 is closely wrapped in outside doping absorption layer 2, and fits tightly with described heat sink 4; Water-cooling channel 5 is provided with vertically in described heat sink 4.
The refractive index of the base material of described doping absorption layer 2 is more than or equal to the refractive index of optical fiber inner cladding.Described heat conduction layer 3 is carbon dust.Described water-cooling channel is in heat sink 4 cross-sectional uniformity distributions.
In the present embodiment, water-cooling channel is provided with four altogether, and water-cooling channel 5 is one of them.The light absorbing medium adulterated in the base material of described doping absorption layer 2 is carbon dust.In described doping absorption layer 2, the doping of carbon dust is uniformly distributed along optical fiber.
Making programme of the present invention is: doubly clad optical fiber 1 is removed surrounding layer, carries out cleaning stand-by with high absolute alcohol to the doubly clad optical fiber 1 removing coating.Refractive index is more than or equal to doubly clad optical fiber 1 inner cladding refractive index and the crystal that temperature of fusion is 200 DEG C be placed in high temperature furnace heat up fusing.When after crystal melting, carbon dust to be added and uniform stirring, the crystal of the molten condition after stirring evenly is applied the doubly clad optical fiber 1 after clean, forms doping absorption layer 2.After cooling, the doubly clad optical fiber 1 being enclosed with doping absorption layer 2 is placed in the U-type groove of heat sink 4, and fills carbon dust formation heat conduction layer 3.The cold water passing into circulation in water-cooling channel 5, by the heat absorption in heat sink 4, makes the temperature of covering power stripper remain on reduced levels.
Embodiment 2
The present embodiment is identical with the structure of embodiment 1, and difference is, the light absorbing medium adulterated in the base material of described doping absorption layer is carbon dust.In described doping absorption layer, the doping of carbon dust increases progressively distribution along optical fiber.
Embodiment 3
The present embodiment is identical with the structure of embodiment 1, and difference is, the light absorbing medium adulterated in the base material of described doping absorption layer is aluminium oxide.In described doping absorption layer, the doping of aluminium oxide is uniformly distributed along optical fiber.
Embodiment 4
The present embodiment is identical with the structure of embodiment 1, and difference is, the light absorbing medium adulterated in the base material of described doping absorption layer is aluminium oxide.In described doping absorption layer, the doping of aluminium oxide increases progressively distribution along optical fiber.
Above one provided by the present invention is described in detail for double clad fiber cladding power stripper and its implementation, apply specific embodiment herein to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications.To sum up, this description should not be construed as limitation of the present invention.
Claims (7)
1. a double clad fiber cladding power stripper, is characterized in that, described power stripper comprises doubly clad optical fiber (1), doping absorption layer (2), heat conduction layer (3), heat sink (4), water-cooling channel (5); Its annexation is, described power stripper profile is cylindric, be provided with the doubly clad optical fiber (1) of a removal surrounding layer in columned axial centre, the axial periphery of described doubly clad optical fiber (1) is disposed with doping absorption layer (2), heat conduction layer (3), heat sink (4); Described heat sink (4) are provided with axial U-type groove; Described doping absorption layer (2) is as the surrounding layer as doubly clad optical fiber (1); Described heat conduction layer (3) is wrapped in doping absorption layer (2) outward, and fits tightly with described heat sink (4); Water-cooling channel (5) is provided with vertically in described heat sink (4).
2. covering power stripper according to claim 1, is characterized in that, described water-cooling channel (5) distributes at heat sink (4) cross-sectional uniformity.
3. covering power stripper according to claim 1, is characterized in that, the light absorbing medium adulterated in the base material of described doping absorption layer (2) is carbon dust or aluminium oxide.
4. the covering power stripper according to claim 1 or 3, is characterized in that, in described doping absorption layer (2), the doping of carbon dust or aluminium oxide is uniformly distributed along optical fiber.
5. the covering power stripper according to claim 1 or 3, is characterized in that, in described doping absorption layer (2), the doping of carbon dust or aluminium oxide replaces with and increases progressively distribution along optical fiber.
6. the covering power stripper according to claim 1 or 3, is characterized in that, the refractive index of the base material of described doping absorption layer (2) is more than or equal to the refractive index of optical fiber inner cladding.
7. covering power stripper according to claim 1, is characterized in that, described heat conduction layer (3) is carbon dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612251.5A CN104345387A (en) | 2014-11-05 | 2014-11-05 | Cladding power stripper for double-clad optical fibers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410612251.5A CN104345387A (en) | 2014-11-05 | 2014-11-05 | Cladding power stripper for double-clad optical fibers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104345387A true CN104345387A (en) | 2015-02-11 |
Family
ID=52501379
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410612251.5A Pending CN104345387A (en) | 2014-11-05 | 2014-11-05 | Cladding power stripper for double-clad optical fibers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104345387A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244740A (en) * | 2015-10-29 | 2016-01-13 | 中国工程物理研究院激光聚变研究中心 | Fiber cooling apparatus for fiber laser |
| CN106405737A (en) * | 2016-10-09 | 2017-02-15 | 武汉锐科光纤激光技术股份有限公司 | Cladding power stripper for removing high-order mode laser and manufacturing method of cladding power stripper |
| WO2017123462A1 (en) * | 2016-01-14 | 2017-07-20 | Coherent, Inc. | Enclosure for modified optical fiber |
| CN107861193A (en) * | 2017-11-07 | 2018-03-30 | 大族激光科技产业集团股份有限公司 | Optical-fiber bundling device and preparation method thereof, abatement optical fiber return reflective method and semiconductor laser |
| CN108565665A (en) * | 2018-03-23 | 2018-09-21 | 中国工程物理研究院激光聚变研究中心 | Cladding power stripper and optical fiber laser |
| CN109567932A (en) * | 2018-12-07 | 2019-04-05 | 中聚科技股份有限公司 | A kind of laser therapeutic system using thulium doped fiber |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110110625A1 (en) * | 2008-06-25 | 2011-05-12 | Coractive High-Tech Inc. | Packages for high power operation of optical fiber components |
| CN103197440A (en) * | 2013-03-05 | 2013-07-10 | 江苏天元激光科技有限公司 | Method for stripping double-clad fiber luminous power |
| CN103269010A (en) * | 2013-05-10 | 2013-08-28 | 上海飞博激光科技有限公司 | Cladding light filtering structure and manufacturing method thereof |
| CN103606803A (en) * | 2013-11-07 | 2014-02-26 | 北京工业大学 | Fiber cladding light stripper for high-power fiber laser |
| CN103676002A (en) * | 2013-11-29 | 2014-03-26 | 深圳市创鑫激光技术有限公司 | High-power fiber mode stripper |
| CN203535257U (en) * | 2013-11-19 | 2014-04-09 | 山东海富光子科技股份有限公司 | High power optical fiber cladding mode filtering device |
-
2014
- 2014-11-05 CN CN201410612251.5A patent/CN104345387A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110110625A1 (en) * | 2008-06-25 | 2011-05-12 | Coractive High-Tech Inc. | Packages for high power operation of optical fiber components |
| CN103197440A (en) * | 2013-03-05 | 2013-07-10 | 江苏天元激光科技有限公司 | Method for stripping double-clad fiber luminous power |
| CN103269010A (en) * | 2013-05-10 | 2013-08-28 | 上海飞博激光科技有限公司 | Cladding light filtering structure and manufacturing method thereof |
| CN103606803A (en) * | 2013-11-07 | 2014-02-26 | 北京工业大学 | Fiber cladding light stripper for high-power fiber laser |
| CN203535257U (en) * | 2013-11-19 | 2014-04-09 | 山东海富光子科技股份有限公司 | High power optical fiber cladding mode filtering device |
| CN103676002A (en) * | 2013-11-29 | 2014-03-26 | 深圳市创鑫激光技术有限公司 | High-power fiber mode stripper |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105244740A (en) * | 2015-10-29 | 2016-01-13 | 中国工程物理研究院激光聚变研究中心 | Fiber cooling apparatus for fiber laser |
| CN105244740B (en) * | 2015-10-29 | 2018-08-31 | 中国工程物理研究院激光聚变研究中心 | Optical fiber cooling apparatus for optical fiber laser |
| WO2017123462A1 (en) * | 2016-01-14 | 2017-07-20 | Coherent, Inc. | Enclosure for modified optical fiber |
| CN106405737A (en) * | 2016-10-09 | 2017-02-15 | 武汉锐科光纤激光技术股份有限公司 | Cladding power stripper for removing high-order mode laser and manufacturing method of cladding power stripper |
| CN106405737B (en) * | 2016-10-09 | 2019-08-09 | 武汉锐科光纤激光技术股份有限公司 | A kind of Cladding Power Stripper and production method removing higher order mode laser |
| CN107861193A (en) * | 2017-11-07 | 2018-03-30 | 大族激光科技产业集团股份有限公司 | Optical-fiber bundling device and preparation method thereof, abatement optical fiber return reflective method and semiconductor laser |
| CN108565665A (en) * | 2018-03-23 | 2018-09-21 | 中国工程物理研究院激光聚变研究中心 | Cladding power stripper and optical fiber laser |
| CN108565665B (en) * | 2018-03-23 | 2023-11-24 | 中国工程物理研究院激光聚变研究中心 | Cladding power stripper and fiber laser |
| CN109567932A (en) * | 2018-12-07 | 2019-04-05 | 中聚科技股份有限公司 | A kind of laser therapeutic system using thulium doped fiber |
| CN109567932B (en) * | 2018-12-07 | 2020-05-19 | 中聚科技股份有限公司 | Laser treatment system using thulium-doped optical fiber |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104297841A (en) | Double-cladding fiber cladding power stripper | |
| CN104345387A (en) | Cladding power stripper for double-clad optical fibers | |
| US9880355B2 (en) | Spatially modulated cladding mode stripper and optical fiber therewith | |
| CN103257399B (en) | Device used for fiber laser and capable of filtering out cladding light | |
| CN206432553U (en) | A kind of optical fiber laser cladding light stripper | |
| CN103904535B (en) | Cladding light filtering device for high-power optical fiber laser | |
| WO2020238933A1 (en) | Photonic crystal fiber, preform thereof, preparation method, and use | |
| CN106405737B (en) | A kind of Cladding Power Stripper and production method removing higher order mode laser | |
| WO2020259643A1 (en) | Triple-clad fiber, pump combiner, fiber grating, and fiber laser | |
| CN205333909U (en) | Coating film type covering luminous power stripper | |
| US20140270637A1 (en) | Dual-index optical pump stripper assembly | |
| CN103606803A (en) | Fiber cladding light stripper for high-power fiber laser | |
| WO2011085619A1 (en) | Large mode field active optical fiber and manufacture method thereof | |
| CN105204117A (en) | High-power double-clad optical fiber cladding light stripper device and manufacturing method | |
| CN104749694B (en) | The method for making of optical fiber mode stripper and optical fiber mode stripper | |
| EP2778728B1 (en) | Apparatus for removing unwanted light from high-power optical systems | |
| CN204758864U (en) | High power fiber cladding power strips and scattered light suppression device dorsad | |
| US20100229604A1 (en) | Indirect heat type double-clad crystal fiber fabrication method | |
| CN105826802A (en) | Cladding light stripper for optical fiber lasers and making method thereof | |
| CN106772787A (en) | For filtering the optical fiber of cladding light and applying its cladding light stripper | |
| Liu et al. | > 2 kW high stability robust fiber cladding mode stripper with moderate package temperature rising | |
| CN110011170A (en) | A method of efficiently filtering out optical fiber high-order mode | |
| CN114624812B (en) | Multi-core energy-transmitting optical fiber and preparation method thereof | |
| CN204666860U (en) | Fibre cladding mould stripper | |
| CA2810351C (en) | Dual-index optical pump stripper assembly |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150211 |
|
| WD01 | Invention patent application deemed withdrawn after publication |