CN103809246B - Optical fiber end cap fusion splicing devices and welding process thereof - Google Patents
Optical fiber end cap fusion splicing devices and welding process thereof Download PDFInfo
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- CN103809246B CN103809246B CN201410052539.1A CN201410052539A CN103809246B CN 103809246 B CN103809246 B CN 103809246B CN 201410052539 A CN201410052539 A CN 201410052539A CN 103809246 B CN103809246 B CN 103809246B
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Abstract
The present invention relates to a kind of optical fiber end cap fusion splicing devices and welding process thereof, described device includes following parts: a beam-expanding collimation mirror (1), the laser sent by laser generator carries out beam-expanding collimation, a speculum (2), the laser penetrating beam-expanding collimation mirror (1) is carried out reflection and turns to; One rotating mirror (4), is reflected into a conical shaped beam by the laser rotary that speculum (2) reflects back; One off axis paraboloid mirror speculum one (3), is reflected into circular light beam again by the conical shaped beam that rotating mirror (4) reflection is extended to; One off axis paraboloid mirror speculum two (7), reflects off axis paraboloid mirror speculum one (3) the circular light beam come and focuses to optical fiber (5) and the welding position of quartz end cap (8). Optical fiber end cap fusion splicing devices of the present invention and welding process thereof, application is convenient, welding is convenient and welding is effective.
Description
Technical field
The present invention relates to a kind of optical fiber end cap fusion splicing devices and welding process thereof, especially relate to and a kind of utilize laser to carry out dissolving device and the method thereof of operation to optical fiber and quartz end cap, belong to laser technology field.
Background technology
When transmitting high power laser light with energy-transmission optic fibre, the incident outgoing facet damage problem of energy-transmission optic fibre is the principal element of limit fibre transmission high power laser light; When laser power is very little, end face is not any change, after laser power increases gradually, there is obviously hole shape damage point in end face, but does not affect Optical Fiber Transmission laser, but the further increase along with laser power, partial melting phenomenon will there is, simultaneously end face surface generation miniature deformation; And producing plasma after laser power reaches damage threshold, with plasma flash of light and sound, optical fiber Output of laser energy declines; If continuing irradiation laser pulse, there will be serious melting phenomenon, optical fiber surface also will be subject to havoc;
The scheme solving fiber end face damage increases quartz end cap structure before fiber end face, under quartz end cap can effectively avoid high-peak power, fiber end face is damaged by laser, hold simultaneously the making of cap need adopt welding way, make optical fiber and hold cap material evenly and be intactly combined in together with;
At present, the method for most industrial connecting fiber adopts electric arc as thermal source, and this has limitation for needing the mode of connection changing heat source strength in quartz end cap and fused fiber splice process. And the change of connecting portion geometrical shape also requires that heat-source energy and welding distance to be had corresponding change; Most commercially available optical fiber splicer is all that the standard communication optical fiber for 125um diameter designs in addition, due to the restriction of its aspect such as fiber clamp, arc parameter, cannot be used for optical fiber and the welding of major diameter quartz end cap.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, one is provided to apply optical fiber end cap fusion splicing devices and welding process thereof easily, this device utilizes CO2 laser to realize large-diameter fibre-optical end cap welding, the output wavelength of CO2 laser is 10.6um, the light of this wavelength is had high absorption coefficient by quartz, therefore can be used as the thermal source of quartz end cap welding; And this thermal source is different from traditional thermal source, CO2 laser is that the mode by optical radiation carrys out welding, it is possible to accurately by lasing to connecting zone, and does not introduce impurity in fusion process, and this also meets the requirement of transmission high-power laser optical fiber device fabrication.
The object of the present invention is achieved like this: a kind of optical fiber end cap fusion splicing devices, and described device includes following parts:
One beam-expanding collimation mirror, the laser sent by laser generator carries out beam-expanding collimation,
One speculum, carries out reflection by the laser of injection beam-expanding collimation mirror and turns to;
One rotating mirror, the laser rotary reflected back by speculum is reflected into a conical shaped beam;
One off axis paraboloid mirror speculum one, is reflected into circular light beam again by the conical shaped beam that rotating mirror reflection is extended to;
One off axis paraboloid mirror speculum two, the circular light beam reflected by off axis paraboloid mirror speculum one focuses to optical fiber and the welding position of quartz end cap.
A kind of optical fiber end cap fusion splicing devices of the present invention, above-mentioned off axis paraboloid mirror speculum one has a through hole, and the axes coincide of the medullary ray of through hole and off axis paraboloid mirror speculum one, speculum turn to reflection after laser after this through hole, arrive the plane of reflection of rotating mirror.
A kind of optical fiber end cap fusion splicing devices of the present invention, above-mentioned off axis paraboloid mirror speculum two has a groove hole, and the axes coincide of the medullary ray in groove hole and off axis paraboloid mirror speculum two, described optical fiber passes this groove hole, and the fiber clamp being positioned at this groove hole clamps optical fiber.
A kind of optical fiber end cap fusion splicing devices of the present invention, described fiber clamp comprises and is arranged at the electric platforms that groove hole can be lifting up and down, has been embedded to an optical fiber fixed mechanism in described electric platforms.
A kind of optical fiber end cap fusion splicing devices of the present invention, described rotating mirror includes speculum body and motor, the output shaft of described motor erects to setting, the output shaft axis of motor and the axes coincide of off axis paraboloid mirror speculum one, and the output shaft of motor is connected with speculum body, and speculum body minute surface is in an acute angle towards the plane of reflection of off axis paraboloid mirror speculum one, the minute surface of speculum body and the axis of off axis paraboloid mirror speculum one.
A kind of optical fiber end cap fusion splicing devices of the present invention, the structure of described rotating mirror is including but not limited to said structure.
A kind of optical fiber end cap fusion splicing devices of the present invention, is provided with sight glass one and sight glass two near the focus position of described off axis paraboloid mirror speculum two.
Optical fiber end cap welding process of the present invention, described optical fiber end cap welding process includes following step:
The laser beam that step one, laser generator send is incident on the speculum of a rotation after collimator;
Beam reflection is become a circular cone shape light beam by the speculum of step 2, rotation, and on plane of reflection by this circular cone shape beam reflection to off axis paraboloid mirror speculum, this off axis paraboloid mirror speculum forms annular light beam after conical shaped beam being reflected;
Step 3, above-mentioned annular light beam are incident on the plane of reflection of another off axis paraboloid mirror speculum, focus to focus after this off axis paraboloid mirror speculum reflects, thus the welding position of the light and quartz end cap that are positioned at this focal point is carried out weld job.
Optical fiber end cap welding process of the present invention, above-mentioned steps one to three is all realized by optical fiber end cap fusion splicing devices, and described optical fiber end cap fusion splicing devices is disposed with beam-expanding collimation mirror, speculum, rotating mirror, off axis paraboloid mirror speculum one and off axis paraboloid mirror speculum two along light path.
Optical fiber end cap welding process of the present invention, the implement device of aforesaid method is including but not limited to above-mentioned optical fiber end cap welding assembling device.
Compared with prior art, the invention has the beneficial effects as follows:
The present invention utilizes the laser of focusing that optical fiber and quartz end cap are carried out welding, compared to electric arc welding, simple to operation, and can not introduce impurity, it is to increase the quality of welding, contributes to improving the quality of product.
Accompanying drawing explanation
Fig. 1 is the structural representation of optical fiber end cap fusion splicing devices of the present invention.
Fig. 2 is the structural representation of the beam-expanding collimation mirror of optical fiber end cap fusion splicing devices of the present invention.
Fig. 3 is the formation structural representation of the rotating mirror of optical fiber end cap fusion splicing devices of the present invention.
Fig. 4 is the structural representation of the off axis paraboloid mirror speculum one of optical fiber end cap fusion splicing devices of the present invention.
Fig. 5 is the structural representation of the off axis paraboloid mirror speculum two of optical fiber end cap fusion splicing devices of the present invention.
Fig. 6 is the formation structural representation of the fiber clamp of optical fiber end cap fusion splicing devices of the present invention.
Wherein:
Beam-expanding collimation mirror 1, speculum 2, off axis paraboloid mirror speculum 1, rotating mirror 4, optical fiber 5, fiber clamp 6, off axis paraboloid mirror speculum 27, quartz end cap 8, sight glass 1, sight glass 2 10, beam-expanding collimation mirror lens 11;
Through hole 31;
Speculum body 41, motor 42;
Electric platforms 61, optical fiber fixed mechanism 62;
Groove hole 71.
Embodiment
See Fig. 1 ~ 6, a kind of optical fiber end cap fusion splicing devices that the present invention relates to, described device includes following parts:
One beam-expanding collimation mirror 1, for laser generator is (preferred, adopting CO2 laser generator) laser that sends carries out beam-expanding collimation, to eliminate the impact of laser beam divergence degree, obtain the good laser beam of collimation, and by it, hot spot regulated the optical fiber end cap welding adapting to different size;
One speculum 2, turns to for the laser of injection beam-expanding collimation mirror 1 is carried out reflection;
One rotating mirror 4, for expanding to a conical shaped beam by the laser that speculum 2 reflects back;
One off axis paraboloid mirror speculum 1, for being again reflected into circular light beam by the conical shaped beam that rotating mirror 4 reflection is extended to;
One off axis paraboloid mirror speculum 27, focuses to optical fiber 5 and the welding position of quartz end cap 8 for off axis paraboloid mirror speculum 1 reflects the circular light beam come;
Said apparatus and flow process are the basic design of the present invention, any change that the technician of this area does according to above-mentioned design or improve all within the protection domain of this patent;
Below, for Fig. 1 ~ 6, the concrete enforcement mode setting forth an optimization:
In the present invention, the laser sent at laser apparatus is through beam-expanding collimation mirror 1, speculum 2, rotating mirror 4, optical fiber 5 and the welding position of quartz end cap 8 is focused to after off axis paraboloid mirror speculum 1 and off axis paraboloid mirror speculum 27, wherein, above-mentioned off axis paraboloid mirror speculum 1 has a through hole 31, and the axes coincide of the medullary ray of through hole 31 and off axis paraboloid mirror speculum 1, speculum 2 turn to reflection after laser after this through hole 31, arrive the plane of reflection of rotating mirror 4, above-mentioned off axis paraboloid mirror speculum 27 has a groove hole 71, and the axes coincide of the medullary ray in groove hole 71 and off axis paraboloid mirror speculum 27, described optical fiber 5 is through this groove hole 71, and the fiber clamp 6 being positioned at this groove hole 71 clamps optical fiber 5, concretely, described fiber clamp 6 comprise be arranged at groove hole 71 can up and down lifting electric platforms 61, the focusing focal point making the fusion point of optical fiber 5 and quartz end cap 8 be positioned at off axis paraboloid mirror speculum 27 for moving up and down, an optical fiber fixed mechanism 62 it has been embedded in described electric platforms 61, , for the optical fiber 5 through this optical fiber fixed mechanism 62 is fixed, and the optical fiber fixed mechanism 62 of customization is except grip optical fibers, the carbon dioxide laser reflected back by off axis paraboloid mirror speculum 27 can not be interfered,
In above-mentioned enforcement mode, rotating mirror 4 is realized by aforesaid way, described rotating mirror 4 includes speculum body 41 and motor 42, the output shaft of described motor 42 erects to setting, the output shaft axis of motor 42 and the axes coincide of off axis paraboloid mirror speculum 1, and the output shaft of motor 42 is connected with speculum body 41, and speculum body 41 minute surface is towards the plane of reflection of off axis paraboloid mirror speculum 1, the minute surface of speculum body 41 and the axis of off axis paraboloid mirror speculum 1 are in an acute angle, so that the speculum body 41 rotated can become a conical shaped beam by being incident upon beam reflection thereon, certainly, for a person skilled in the art, focus on rotating mirror 4, and it is not how it realizes rotating, the above-mentioned consideration being in complete scheme, citing one is easier to the scheme realized, and the technician of this area is under the enlightenment of this patent, other employing rotate implementation, all within the protection domain of this patent,
Meanwhile, namely near the welding position focus position of off axis paraboloid mirror speculum 27 (also) of optical fiber 5 and quartz end cap 8, it is provided with sight glass 1 and sight glass 2 10, for positioning before welding, and when welding, welding effect is observed;
In sum, the welding process of above-mentioned optical fiber end cap fusion splicing devices includes following basic step:
The laser beam that step one, laser generator send is incident on the speculum of a rotation after collimator;
Beam reflection is become a circular cone shape light beam by the speculum of step 2, rotation, and on plane of reflection by this circular cone shape beam reflection to off axis paraboloid mirror speculum, this off axis paraboloid mirror speculum forms annular light beam after conical shaped beam being reflected;
Step 3, above-mentioned annular light beam are incident on the plane of reflection of another off axis paraboloid mirror speculum, focus to focus after this off axis paraboloid mirror speculum reflects, thus the welding position of the light and quartz end cap that are positioned at this focal point is carried out weld job;
Adopt the optical fiber end cap of this method welding can significantly improve the damage threshold of optical fiber, substantially do not affect Laser output efficiency and beam quality simultaneously; The optical fiber end cap welding of high quality, low cost can be realized; When big batch connects quartz end cap and optical fiber, utilize high strength that carbon dioxide laser produces, extremely good center alignment and the advantages such as connection displaying more significantly can be repeated.
Claims (8)
1. an optical fiber end cap fusion splicing devices, it is characterised in that: described device includes following parts:
One beam-expanding collimation mirror (1), the laser sent by laser generator carries out beam-expanding collimation,
One speculum (2), carries out reflection by the laser penetrating beam-expanding collimation mirror (1) and turns to;
One rotating mirror (4), is reflected into a conical shaped beam by the laser rotary that speculum (2) reflects back;
One off axis paraboloid mirror speculum one (3), is reflected into circular light beam again by the conical shaped beam that rotating mirror (4) reflection is extended to;
One off axis paraboloid mirror speculum two (7), reflects off axis paraboloid mirror speculum one (3) the circular light beam come and focuses to optical fiber (5) and the welding position of quartz end cap (8).
2. a kind of optical fiber end cap fusion splicing devices as claimed in claim 1, it is characterized in that: above-mentioned off axis paraboloid mirror speculum one (3) has a through hole (31), and the axes coincide of the medullary ray of through hole (31) and off axis paraboloid mirror speculum one (3), speculum (2) turn to reflection after laser after this through hole (31), arrive the plane of reflection of rotating mirror (4).
3. a kind of optical fiber end cap fusion splicing devices as claimed in claim 1, it is characterized in that: above-mentioned off axis paraboloid mirror speculum two (7) has a groove hole (71), and the axes coincide of the medullary ray of groove hole (71) and off axis paraboloid mirror speculum two (7), described optical fiber (5) is through this groove hole (71), and the fiber clamp (6) being positioned at this groove hole (71) clamps optical fiber (5).
4. a kind of optical fiber end cap fusion splicing devices as claimed in claim 3, it is characterized in that: described fiber clamp (6) comprise be arranged at groove hole (71) can up and down lifting electric platforms (61), be embedded to an optical fiber fixed mechanism (62) in described electric platforms (61).
5. such as claim 1, 2, a kind of optical fiber end cap fusion splicing devices described in 3 or 4, it is characterized in that: described rotating mirror (4) includes speculum body (41) and motor (42), the output shaft of described motor (42) erects to setting, the output shaft axis of motor (42) and the axes coincide of off axis paraboloid mirror speculum one (3), and the output shaft of motor (42) is connected with speculum body (41), and speculum body (41) minute surface is towards the plane of reflection of off axis paraboloid mirror speculum one (3), the minute surface of speculum body (41) and the axis of off axis paraboloid mirror speculum one (3) are in an acute angle.
6. a kind of optical fiber end cap fusion splicing devices as described in claim 1,2,3 or 4, it is characterised in that: it is provided with sight glass one (9) and sight glass two (10) near the focus position of described off axis paraboloid mirror speculum two (7).
7. an optical fiber end cap welding process, it is characterised in that: described optical fiber end cap welding process includes following step:
The laser beam that step one, laser generator send is incident on the speculum of a rotation after collimator;
Beam reflection is become a circular cone shape light beam by the speculum of step 2, rotation, and on plane of reflection by this circular cone shape beam reflection to off axis paraboloid mirror speculum, this off axis paraboloid mirror speculum forms annular light beam after conical shaped beam being reflected;
Step 3, above-mentioned annular light beam are incident on the plane of reflection of another off axis paraboloid mirror speculum, focus to focus after this off axis paraboloid mirror speculum reflects, thus the welding position of the light and quartz end cap that are positioned at this focal point is carried out weld job.
8. a kind of optical fiber end cap welding process as claimed in claim 7, it is characterized in that: above-mentioned steps one to three is all realized by optical fiber end cap fusion splicing devices, and described optical fiber end cap fusion splicing devices is disposed with beam-expanding collimation mirror (1), speculum (2), rotating mirror (4), off axis paraboloid mirror speculum one (3) and off axis paraboloid mirror speculum two (7) along light path.
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| CN201410052539.1A CN103809246B (en) | 2014-02-17 | 2014-02-17 | Optical fiber end cap fusion splicing devices and welding process thereof |
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| CN201410052539.1A CN103809246B (en) | 2014-02-17 | 2014-02-17 | Optical fiber end cap fusion splicing devices and welding process thereof |
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| CN103809246B true CN103809246B (en) | 2016-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109683329A (en) * | 2019-01-08 | 2019-04-26 | 深圳市讯泉科技有限公司 | The laser system of cone is drawn for optical fiber and draws cone system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104793291A (en) * | 2015-04-21 | 2015-07-22 | 江苏法尔胜光电科技有限公司 | Fixture, system and method for welding quartz end caps of optical fibers |
| CN109001863A (en) * | 2018-09-07 | 2018-12-14 | 广东国志激光技术有限公司 | A kind of devices and methods therefor of ring-shaped light spot welding optic fibre end cap |
| CN109188609B (en) * | 2018-09-27 | 2020-06-09 | 江苏大学 | Optical fiber end cap welding system and welding method |
| CN111633326B (en) * | 2020-06-09 | 2021-11-09 | 相位光粒(北京)科技有限公司 | Fusion splicing device for double-clad fiber and quartz waveguide coupler |
| CN111999810B (en) * | 2020-09-16 | 2021-10-01 | 中南大学 | Automatic optical fiber end cap alignment welding device and method based on machine vision positioning |
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| CN203745677U (en) * | 2014-02-17 | 2014-07-30 | 江苏法尔胜光电科技有限公司 | Welding device of optical fiber end cap |
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| SE522255C2 (en) * | 2002-02-26 | 2004-01-27 | Ericsson Telefon Ab L M | Apparatus and method for melting the ends of two optical fibers |
| DE102007028504B4 (en) * | 2007-06-18 | 2009-07-30 | Scansonic Mi Gmbh | Device for processing a workpiece by means of a laser beam |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203245513U (en) * | 2013-04-03 | 2013-10-23 | 深圳市大族激光科技股份有限公司 | Annular light-spot welding device |
| CN203745677U (en) * | 2014-02-17 | 2014-07-30 | 江苏法尔胜光电科技有限公司 | Welding device of optical fiber end cap |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109683329A (en) * | 2019-01-08 | 2019-04-26 | 深圳市讯泉科技有限公司 | The laser system of cone is drawn for optical fiber and draws cone system |
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Address after: 214000 Wuxi, Jiangsu (Taihu) International Science and Technology Park, block KGY-YF-G-11.12, University of science and Technology Park sensor network industrial building, building B, building 5 Applicant after: WUXI FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Applicant after: FASTEN GROUP Co.,Ltd. Address before: 214000 Wuxi, Jiangsu (Taihu) International Science and Technology Park, block KGY-YF-G-11.12, University of science and Technology Park sensor network industrial building, building B, building 5 Applicant before: JIANGSU FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Applicant before: FASTEN GROUP Co.,Ltd. |
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Address after: 214000 Wuxi, Jiangsu (Taihu) International Science and Technology Park, block KGY-YF-G-11.12, University of science and Technology Park sensor network industrial building, building B, building 5 Co-patentee after: FASTEN GROUP Co.,Ltd. Patentee after: WUXI FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 214000 Wuxi, Jiangsu (Taihu) International Science and Technology Park, block KGY-YF-G-11.12, University of science and Technology Park sensor network industrial building, building B, building 5 Co-patentee before: FASTEN GROUP Co.,Ltd. Patentee before: WUXI FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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Effective date of registration: 20170418 Address after: 214434 Chengjiang Middle Road, Jiangsu, China, No. 278, No. Patentee after: JIANGSU FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 214000 Wuxi, Jiangsu (Taihu) International Science and Technology Park, block KGY-YF-G-11.12, University of science and Technology Park sensor network industrial building, building B, building 5 Co-patentee before: FASTEN GROUP Co.,Ltd. Patentee before: WUXI FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |
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