CN103560383A - High-power fiber cladding mode filter - Google Patents
High-power fiber cladding mode filter Download PDFInfo
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- CN103560383A CN103560383A CN201310579700.6A CN201310579700A CN103560383A CN 103560383 A CN103560383 A CN 103560383A CN 201310579700 A CN201310579700 A CN 201310579700A CN 103560383 A CN103560383 A CN 103560383A
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Abstract
The invention relates to a fiber cladding mode filter, in particular to a high-power fiber cladding mode filter. The high-power fiber cladding mode filter comprises a double-cladding fiber composed of a fiber core, inner cladding and outer cladding, fiber fixing rubber blocks, a heat conduction element and high refractive index adhesive tape. The high-power fiber cladding mode filter is characterized in that the double-cladding fiber is fixed to the heat conduction element through the fiber fixing rubber blocks, fixing points are located on a coating layer of the double-cladding fiber, the outer cladding of a section of double-cladding fiber outside the fixing points is removed, and the high refractive index adhesive tape coats the inner cladding of the fiber, and therefore cladding mode lasers transmitted in the inner cladding of the double-cladding fiber are filtered by the high refractive index adhesive tape and converted into heat, and heat is discharged in a conduction mode through the heat conduction element. The high-power fiber cladding mode filter has the advantages that the cladding mode lasers transmitted in the inner cladding of the double-cladding fiber can be effectively filtered, and the high-power fiber cladding mode filter can be widely applied to development of high-power fiber laser devices.
Description
Technical field
The present invention relates to a kind of optical fibers at cladding mode stripper, especially a kind of high-power fiber cladding mode stripper, belongs to optical fiber, optical communication and laser technology field.
Background technology
Fiber laser relies on its volume little in recent years, lightweight, hot spot is excellent, and heat radiation easily, cost is low, the outstanding speciality such as non-maintaining is just replacing traditional industry laser in each main laser application, and high power fiber laser becomes the state-of-the-art industrial processes laser of the third generation, and its application has expanded to automobile making, shipbuilding, high-speed railway, engineering machinery, war industry equipment and aviation.Fiber laser just increases rapidly with annual 40 percent speed at the possession share in industrial lasers field.
Doubly clad optical fiber is development high power, the most crucial device of high power fiber laser, basic principle is that the rare earth ion that the high power low-light level pump light by transmitting in covering is constantly adulterated in fibre core absorbs, and is finally converted into the high-brightness fiber-optic Laser output transmitting in fibre core.But at final output, in doubly clad optical fiber inner cladding, always have some cladding lights, comprise remaining clad pumping optical and cladding mode flashlight, these cladding mode laser are carried out to effectively clean filtering, be convenient to the subsequent applications of optical-fiber laser.The present invention proposes a kind of high power cladding pattern stripper, can be by the effectively clean filtering of the laser transmitting in the inner cladding of doubly clad optical fiber, filtering luminous power can reach hectowatt magnitude, can be widely used in multikilowatt, the development of myriawatt level fiber laser.
Summary of the invention
The object of this invention is to provide a kind of high-power fiber cladding mode stripper that the high power cladding Mode for Laser of transmitting in the inner cladding of doubly clad optical fiber has been carried out to effectively clean filtering.
The present invention can be realized by the following technical programs.
A kind of high-power fiber cladding mode stripper, comprise by fibre core, the doubly clad optical fiber 1 that inner cladding and surrounding layer form, optical fiber is blob of viscose 2 fixedly, heat-conduction component 3 and high index of refraction adhesive tape 4, it is characterized in that a doubly clad optical fiber 1 by optical fiber fixedly blob of viscose 2 be fixed on heat-conduction component 3, fixing point is on the overlay of doubly clad optical fiber, the surrounding layer of one section of doubly clad optical fiber 1 outside fixing point is divested and is used high index of refraction adhesive tape 4 to be coated on optical fiber inner cladding, therefore the laser cladding pattern of transmitting in the inner cladding of doubly clad optical fiber is by 4 filterings of high index of refraction adhesive tape and be converted into heat, heat conducts by heat-conduction component 3.
Doubly clad optical fiber of the present invention comprises fibre core, inner cladding and surrounding layer, and wherein fiber core refractive index is greater than inner cladding refractive index, and fibre core pattern is transmitted in fiber core by waveguiding effect; Inner cladding refractive index is greater than cladding refractive index, and cladding mode transmits in optical fiber inner cladding by waveguiding effect.
The present invention is provided with fixedly blob of viscose 2 of two blocks of optical fiber, optical fiber fixedly blob of viscose 2 compartment of terrains is fixed on doubly clad optical fiber 1 on heat-conduction component 3, the optical fiber fixedly surrounding layer of 2 pairs of doubly clad optical fibers 1 of blob of viscose does not cause damage, and the two blocks of optical fiber fixedly surrounding layer of the doubly clad optical fiber 1 of 2 of blob of viscoses is divested and use high index of refraction adhesive tape 4 to be coated on optical fiber inner cladding.
Heat-conduction component 3 of the present invention has the higher coefficient of heat conduction, it can be aluminum element, or copper element, in heat-conduction component 3, be provided with heat transfer path, heat-conduction component 3 is provided with inlet and liquid outlet, inlet is connected with heat transfer path with liquid outlet, by liquid cooling mode, the interior heat of heat-conduction component 3 is conducted.
The refractive index of high index of refraction adhesive tape 4 of the present invention is greater than the refractive index of the inner cladding of doubly clad optical fiber, when high index of refraction adhesive tape 4 is coated on optical fiber inner cladding, the waveguiding effect that can destroy inner cladding, the cladding mode filtering by the laser transmitting in inner cladding, is converted into heat.
Advantage of the present invention is that the high power cladding Mode for Laser having realized transmitting in the inner cladding of doubly clad optical fiber by easy device has been carried out effectively clean filtering, can be widely used in the development of high power, high power fiber laser.
accompanying drawing explanation:
A kind of high-power fiber cladding mode of Fig. 1 stripper schematic diagram
Mark in figure: doubly clad optical fiber 1, optical fiber is blob of viscose 2, heat-conduction component 3, high index of refraction adhesive tape 4 fixedly.
Embodiment
Below in conjunction with accompanying drawing, the invention will be further described.
As shown in Figure 1, a kind of high-power fiber cladding mode stripper, comprise by fibre core, the doubly clad optical fiber 1 that inner cladding and surrounding layer form, optical fiber is blob of viscose 2 fixedly, heat-conduction component 3 and high index of refraction adhesive tape 4, the invention is characterized in a doubly clad optical fiber 1 by optical fiber fixedly blob of viscose 2 be fixed on heat-conduction component 3, fixing point is on the overlay of doubly clad optical fiber, the surrounding layer of one section of doubly clad optical fiber 1 outside fixing point is divested and is used high index of refraction adhesive tape 4 to be coated on optical fiber inner cladding, therefore the laser cladding pattern of transmitting in the inner cladding of doubly clad optical fiber is by 4 filterings of high index of refraction adhesive tape and be converted into heat, heat conducts by heat-conduction component 3, described doubly clad optical fiber comprises fibre core, inner cladding and surrounding layer, wherein fiber core refractive index is greater than inner cladding refractive index, fibre core pattern is transmitted in fiber core by waveguiding effect, inner cladding refractive index is greater than the refractive index of surrounding layer, cladding mode transmits in optical fiber inner cladding by waveguiding effect, the present invention is provided with fixedly blob of viscose 2 of two blocks of optical fiber, optical fiber fixedly blob of viscose 2 compartment of terrains is fixed on doubly clad optical fiber 1 on heat-conduction component 3, the optical fiber fixedly surrounding layer of 2 pairs of doubly clad optical fibers 1 of blob of viscose does not cause damage, the two blocks of optical fiber fixedly surrounding layer of the doubly clad optical fiber 1 of 2 of blob of viscoses is divested and is used high index of refraction adhesive tape 4 to be coated on optical fiber inner cladding, heat-conduction component 3 of the present invention has the higher coefficient of heat conduction, it can be aluminum element, or copper element, in heat-conduction component 3, be provided with heat transfer path, heat-conduction component 3 is provided with inlet and liquid outlet, inlet is connected with heat transfer path with liquid outlet, by liquid cooling mode, the interior heat of heat-conduction component 3 is conducted, the refractive index of high index of refraction adhesive tape 4 of the present invention is greater than the refractive index of the inner cladding of doubly clad optical fiber, when high index of refraction adhesive tape 4 is coated on optical fiber inner cladding, can destroy the waveguiding effect of inner cladding, by the cladding mode filtering to the laser transmitting in inner cladding, be converted into heat, advantage of the present invention is that the high power cladding Mode for Laser having realized transmitting in the inner cladding of doubly clad optical fiber by easy device has been carried out effectively clean filtering, can be widely used in high power, the development of high power fiber laser.
Claims (5)
1. a high-power fiber cladding mode stripper, comprise by fibre core, the doubly clad optical fiber that inner cladding and surrounding layer form, optical fiber is blob of viscose fixedly, heat-conduction component and high index of refraction adhesive tape, it is characterized in that a doubly clad optical fiber by optical fiber fixedly blob of viscose be fixed on heat-conduction component, fixing point is on the overlay of doubly clad optical fiber, the surrounding layer of one section of doubly clad optical fiber outside fixing point is divested and is used high index of refraction adhesive tape to be coated on optical fiber inner cladding, the laser cladding pattern of transmitting in the inner cladding of doubly clad optical fiber is by the filtering of high index of refraction adhesive tape and be converted into heat, heat conducts by heat-conduction component.
2. high-power fiber cladding mode stripper according to claim 1, is characterized in that doubly clad optical fiber comprises fibre core, inner cladding and surrounding layer, and fiber core refractive index is greater than inner cladding refractive index, and fibre core pattern is transmitted in fiber core by waveguiding effect; Inner cladding refractive index is greater than cladding refractive index, and cladding mode transmits in optical fiber inner cladding by waveguiding effect.
3. high-power fiber cladding mode stripper according to claim 1, it is characterized in that being provided with fixedly blob of viscose of two blocks of optical fiber, optical fiber fixing glue block gap doubly clad optical fiber is fixed on heat-conduction component, the surrounding layer of the doubly clad optical fiber of two optical fiber fixing glue interblocks is divested and is used high index of refraction adhesive tape to be coated on optical fiber inner cladding.
4. high-power fiber cladding mode stripper according to claim 1, it is characterized in that heat-conduction component adopts aluminum element or the copper element of high heat-conduction coefficient, in heat-conduction component, be provided with heat transfer path, heat-conduction component is provided with inlet and liquid outlet, and inlet is connected with heat transfer path with liquid outlet.
5. high-power fiber cladding mode stripper according to claim 1, it is characterized in that the refractive index of high index of refraction adhesive tape is greater than the refractive index of the inner cladding of doubly clad optical fiber, high index of refraction adhesive tape is coated on optical fiber inner cladding, destroy the waveguiding effect of inner cladding, cladding mode filtering by the laser transmitting in inner cladding, is converted into heat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579700.6A CN103560383A (en) | 2013-11-19 | 2013-11-19 | High-power fiber cladding mode filter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310579700.6A CN103560383A (en) | 2013-11-19 | 2013-11-19 | High-power fiber cladding mode filter |
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| CN103560383A true CN103560383A (en) | 2014-02-05 |
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| CN201310579700.6A Pending CN103560383A (en) | 2013-11-19 | 2013-11-19 | High-power fiber cladding mode filter |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104503018A (en) * | 2014-12-24 | 2015-04-08 | 江苏大学 | Mode filtering fiber |
| CN105093411A (en) * | 2015-06-19 | 2015-11-25 | 深圳联品激光技术有限公司 | Cladding power stripper |
| CN105449499A (en) * | 2015-12-11 | 2016-03-30 | 中电科天之星激光技术（上海）有限公司 | Filtering method for optical fiber cladding layer light by utilizing waveguide capillary |
| CN105739014A (en) * | 2016-04-13 | 2016-07-06 | 昆山华辰光电科技有限公司 | Novel high power optical fiber mode stripper and preparation method thereof |
| CN105891941A (en) * | 2014-09-17 | 2016-08-24 | 方强 | Fiber cladding mode leakage method and device |
| CN111123441A (en) * | 2020-01-16 | 2020-05-08 | 扬州兰都塑料科技有限公司 | Optical fiber connector for high-power laser cable |
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| CN201234052Y (en) * | 2008-07-01 | 2009-05-06 | 上海拜安信息科技有限公司 | Pump purge apparatus for double cladding optical fiber amplifier and optical fiber laser |
| CN101718916A (en) * | 2009-12-09 | 2010-06-02 | 中国科学院上海光学精密机械研究所 | Method for stripping residual pump light in double-coated optical fiber |
| 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 |
| 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 |
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2013
- 2013-11-19 CN CN201310579700.6A patent/CN103560383A/en active Pending
Patent Citations (4)
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| CN201234052Y (en) * | 2008-07-01 | 2009-05-06 | 上海拜安信息科技有限公司 | Pump purge apparatus for double cladding optical fiber amplifier and optical fiber laser |
| CN101718916A (en) * | 2009-12-09 | 2010-06-02 | 中国科学院上海光学精密机械研究所 | Method for stripping residual pump light in double-coated optical fiber |
| 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 |
| 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 |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105891941A (en) * | 2014-09-17 | 2016-08-24 | 方强 | Fiber cladding mode leakage method and device |
| CN104503018A (en) * | 2014-12-24 | 2015-04-08 | 江苏大学 | Mode filtering fiber |
| WO2016101470A1 (en) * | 2014-12-24 | 2016-06-30 | 江苏大学 | Mode filtering optical fibre |
| CN104503018B (en) * | 2014-12-24 | 2017-03-29 | 江苏大学 | Filter mode fiber |
| CN105093411A (en) * | 2015-06-19 | 2015-11-25 | 深圳联品激光技术有限公司 | Cladding power stripper |
| CN105093411B (en) * | 2015-06-19 | 2019-04-02 | 深圳联品激光技术有限公司 | A kind of Cladding Power Stripper |
| CN105449499A (en) * | 2015-12-11 | 2016-03-30 | 中电科天之星激光技术（上海）有限公司 | Filtering method for optical fiber cladding layer light by utilizing waveguide capillary |
| CN105739014A (en) * | 2016-04-13 | 2016-07-06 | 昆山华辰光电科技有限公司 | Novel high power optical fiber mode stripper and preparation method thereof |
| CN111123441A (en) * | 2020-01-16 | 2020-05-08 | 扬州兰都塑料科技有限公司 | Optical fiber connector for high-power laser cable |
| CN111123441B (en) * | 2020-01-16 | 2021-04-09 | 扬州兰都塑料科技有限公司 | Optical fiber connector for high-power laser cable |
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Application publication date: 20140205 |