CN203596497U - Optical fiber cladding layer optical stripper used for high-power optical fiber laser - Google Patents
Optical fiber cladding layer optical stripper used for high-power optical fiber laser Download PDFInfo
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- CN203596497U CN203596497U CN201320701610.5U CN201320701610U CN203596497U CN 203596497 U CN203596497 U CN 203596497U CN 201320701610 U CN201320701610 U CN 201320701610U CN 203596497 U CN203596497 U CN 203596497U
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Abstract
The utility model relates to an optical fiber cladding layer optical stripper used for a high-power optical fiber laser and belongs to the technical field of optical fiber laser devices. The optical fiber cladding layer optical stripper comprises an optical fiber and a heat radiation device. The coating layer and the outer cladding layer of the optical fiber are subjected to thermal stripping treatment and the optical fiber is coated with optical gel with high refractive index. The heat radiation device is processed from a piece of integrated metal (preference is given to metal with high thermal conductivity). The heat radiation device comprises a pedestal and a semicircular column projected from the pedestal, and the cross section is Omega-shaped. Two fine grooves are arranged at the tops of two ends of the semicircular column. Thermistors are fixed inside the heat radiation device through the two fine grooves respectively. The optical fiber cladding optical stripper is simple and small, and can conduct the heat transferred from the cladding layer light effectively.
Description
Technical field
The utility model relates to a kind of fiber cladding photospallation device for high-capacity optical fiber laser, belongs to optical-fiber laser device technical field.
Background technology
In recent years, along with the maturation gradually of high-power semiconductor laser pump technology and doubly clad optical fiber drawing technology, fiber laser is transformed to all optical fibre structure by space separate structure, power output improves constantly, current maximum single-mode output power has exceeded a myriawatt, and multimode output power reaches tens thousand of watts.
In the optical fiber inner cladding of the end of double-cladding fiber laser system, except there being residual pump light, also there is a part of spontaneous emission light (ASE) and be leaked to the flashlight inner cladding at fusion point place from fibre core.Directly exported if these light are not stripped from, can affect laser beam quality, the device heatings such as the more serious pump combiner that also can cause next stage, even can burn device.If in the time peeling off cladding light, the heat that cladding light can not be changed into is led away in time, will cause optical fiber local overheating, causes optical fiber to blow.Therefore, significant for thoroughly peeling off for stability and the high-quality Laser output of high-power fiber laser system of fiber cladding light.
At present, the multiple method of peeling off fiber cladding light is proposed, such as the method (referring to the patent " filtering method of cladding light in doubly clad optical fiber " that on May 19th, 2011, disclosed patent publication No. was CN102255235A) that is directly coated with the method (referring to the patent " method of residual pump light in peeling off doubly clad optical fiber " that on December 9th, 2012, disclosed patent publication No. was CN101718916A) of high index of refraction optical gel on exposed inner cladding and inscribes V-type groove on inner cladding is all to make the higher order mode light in covering to leak from covering because do not meet total reflection condition both at home and abroad.But these methods cannot be by the light filtering of the low step mode in inner cladding.Someone proposes to adopt the method for corrosion part inner cladding to peel off cladding light (referring to " End-pumped300W continuous-wave ytterbium doped all-fiber laser with master oscillator multistage power amplifiers configuration ", Optics Express, Vol.16,2008, P17864-17869).But above-mentioned three kinds of methods are all peeling off most cladding lights in short fiber length very much, these cladding lights can cause optical fiber local temperature too high after changing into heat, serious meeting causes stripper to burn, and even burns forward whole laser system due to self-focusing effect.A kind of optical fiber seal that can peel off cladding light is in a canister that has water inlet and a delivery port, although and can play radiating effect to the device that this container passes to mobile cooling water, but need to consider the multiple manufacture crafts such as sealing, comparatively complicated, and optical fiber long period of soaking can be accelerated to aging (referring to the patent " fiber cladding light filter and manufacture method thereof " that on April 29th, 2011, disclosed patent publication No. was CN102255227A) of optical fiber in cooling water.
So, need a kind of simple small and exquisite fiber cladding photospallation device, and can effectively lead away the heat being changed into by cladding light.
Summary of the invention
The purpose of this utility model is effectively to lead away the heat being changed into by cladding light, and a kind of fiber cladding photospallation device for high-capacity optical fiber laser is provided thus.
Described fiber cladding photospallation device comprises to coat and surrounding layer is carried out hot strip process and applied optical fiber and the heat abstractor of high index of refraction optical gel, the semicircle column thing that described heat abstractor comprises base and protrudes on it, its cross section is Ω shape, semicircle column thing is equipped with through hole vertically, its aperture is slightly larger than fibre diameter, has two strias at the top at semicircle column thing two ends.
Described heat abstractor is processed by a complete metal (preferably high-thermal conductive metal).
Optical fiber fixing mode in heat abstractor is: optical fiber is placed in to through hole tension, unsettled, optical fiber is fixed on to through hole two ends with adhesive, make to be full of graphite between optical fiber and hole wall by stria.
Be fixed with respectively thermistor by above-mentioned stria in heat sink interior, thermistor is input and the output of close heat abstractor inner fiber respectively, by reading respectively the resistance of two thermistors, determine the temperature of the optical fiber of corresponding position, thereby realize Optical Maser System and catoptrical monitoring.
The base of described heat abstractor is provided with screw, for being fixed on the heat sink upper to use water-cooling of laser.
Beneficial effect
Compared with prior art, the utility model can be led away the heat being changed into by cladding light effectively, and the optical fiber in heat abstractor is not subject to pressure radially, can not produce self-focusing effect; Described fiber cladding photospallation device is provided with thermistor and is conducive to realize Optical Maser System and catoptrical monitoring; The base of its heat abstractor is provided with screw, can be arranged on the hot and cold water sink of superpower laser, is conducive to equipment miniaturization and densification.
Accompanying drawing explanation
Fig. 1 is according to the heat abstractor of the high-capacity optical fiber laser fiber cladding photospallation device of embodiment of the present utility model.
10 heat abstractors, 1001 and 1002 strias, 1003 screws, 1004 through holes.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is further described, but should limit the utility model scope with this.For not fuzzy theme of the present utility model, by the description of omitting known function or step.
As an embodiment of the present utility model, fiber cladding photospallation device comprises to coat and surrounding layer is carried out hot strip process and applied optical fiber and the heat abstractor of high index of refraction optical gel.Wherein said heat abstractor is processed by a complete high thermal conductivity metal, and cross section is Ω shape, and centre is equipped with through hole 1004, and aperture is slightly larger than fibre diameter, and two strias 1001 and 1002 are carved with at top.
The fixing mode of heat abstractor and optical fiber is: the part of first optical fiber being carried out to hot strip process to coat and surrounding layer and having applied high folding glue is put into through hole, then by optical fiber tension, unsettled, optical fiber is fixed on to through hole 1004 two ends with adhesive, last from the stria 1001 and 1002 use High Pressure Guns at top to the interior injection black lead wash of through hole 1004, make to be full of black lead wash between optical fiber and hole wall.So far, optical fiber and heat abstractor are fixed.
After solidifying completely Deng black lead wash, respectively a thermistor is attached to the black lead wash surface of solidifying in two strias 1001 and 1002.By reading the resistance of two thermistors, can determine the temperature of the optical fiber of each thermistor corresponding position, thereby realize respectively the monitoring of the cladding light to the reverberation from laser output incident from the external world and laser system self generation.
In view of current high-capacity optical fiber laser adopts water-cooling substantially, the base of heat abstractor is provided with screw 1003, heat abstractor can be fixed on to the heat sink upper it is dispelled the heat by water-cooled of laser by described screw, thereby save the volume and weight of stripper itself, simplified device.
The utility model is except can, for high-capacity optical fiber laser, being used for high-power fiber amplifier.
One of ordinary skill in the art will appreciate that the principle of the present utility model and spirit that defines its scope in the case of not departing from claims and equivalent thereof, in the embodiment that can describe herein, make various changes and modification.
Claims (5)
1. the fiber cladding photospallation device for high-capacity optical fiber laser, it is characterized in that, described cladding light is peeled off fiber cladding photospallation device and is comprised through hot strip process and apply optical fiber and the heat abstractor of high index of refraction optical gel, wherein, the semicircle column thing that described heat abstractor comprises base and protrudes on it, its cross section is Ω shape, and described semicircle column thing is equipped with through hole (1004) vertically, through hole (1004) aperture is slightly larger than fibre diameter, for placing optical fiber.
2. according to fiber cladding photospallation device claimed in claim 1, it is characterized in that, the top at the described semicircle column thing two ends of described heat abstractor has two strias (1001,1002);
Described optical fiber fixing mode in described heat abstractor is: will be placed in through hole (1004) tension, unsettled through hot strip process the fiber segment that applied high folding glue, optical fiber is fixed on to through hole (1004) two ends with adhesive, makes to be full of graphite between optical fiber and hole wall by two strias (1001,1002).
3. according to the fiber cladding photospallation device described in claim 1 or 2, it is characterized in that, be fixed with respectively thermistor by pore in heat sink interior, thermistor is input and the output of close heat abstractor inner fiber respectively.
4. according to the fiber cladding photospallation device described in claim 1 or 2, it is characterized in that, the base of described heat abstractor is provided with screw (1003), for being fixed on the heat sink upper to use water-cooling of described high-capacity optical fiber laser.
5. according to the fiber cladding photospallation device described in claim 1 or 2, it is characterized in that, described heat abstractor is processed by a complete metal, and described metal is high-thermal conductive metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701610.5U CN203596497U (en) | 2013-11-07 | 2013-11-07 | Optical fiber cladding layer optical stripper used for high-power optical fiber laser |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320701610.5U CN203596497U (en) | 2013-11-07 | 2013-11-07 | Optical fiber cladding layer optical stripper used for high-power optical fiber laser |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203596497U true CN203596497U (en) | 2014-05-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320701610.5U Expired - Fee Related CN203596497U (en) | 2013-11-07 | 2013-11-07 | Optical fiber cladding layer optical stripper used for high-power optical fiber laser |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606803A (en) * | 2013-11-07 | 2014-02-26 | 北京工业大学 | Fiber cladding light stripper for high-power fiber laser |
| CN104332811A (en) * | 2014-08-28 | 2015-02-04 | 清华大学 | Optical-fiber laser oscillation system |
-
2013
- 2013-11-07 CN CN201320701610.5U patent/CN203596497U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103606803A (en) * | 2013-11-07 | 2014-02-26 | 北京工业大学 | Fiber cladding light stripper for high-power fiber laser |
| CN104332811A (en) * | 2014-08-28 | 2015-02-04 | 清华大学 | Optical-fiber laser oscillation system |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20211107 |
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| CF01 | Termination of patent right due to non-payment of annual fee |