CN103809246A - Device and method for welding optical fibre and end cap - Google Patents
Device and method for welding optical fibre and end cap Download PDFInfo
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- CN103809246A CN103809246A CN201410052539.1A CN201410052539A CN103809246A CN 103809246 A CN103809246 A CN 103809246A CN 201410052539 A CN201410052539 A CN 201410052539A CN 103809246 A CN103809246 A CN 103809246A
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Abstract
The invention relates to a device and a method for welding an optical fibre and an end cap. The device comprises the following components: a beam expansion and collimation lens (1) used for carrying out beam expansion and collimation on a laser emitted by a laser emitter, a reflector (2) used for reflecting and reversing the laser emitted out of the beam expansion and collimation lens (1), a rotary reflector (4) used for reflecting the laser reflected by the reflector (2) into a conical light beam, an off-axis parabolic reflector I (3) used for reflecting the conical light beam reflected and expanded by the rotary reflector (4) again into an annular light beam, and an off-axis parabolic reflector II (7) used for focusing the annular light beam reflected by the off-axis parabolic reflector I (3) on the welded portion of the optical fibre (5) and the quartz end cap (8). The device and the method for welding the optical fibre and the end cap are convenient to apply and weld, and good in welding effect.
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 a kind of devices and methods therefor that utilizes laser optical fiber and quartzy end cap to be dissolved to operation, belong to laser technology field.
Background technology
During with energy-transmission optic fibre transmission high power laser light, energy-transmission optic fibre incident exit end surface damage problem is the principal element of limit fibre transmission high power laser light; In the time that laser power is very little, end face is not any change, after laser power increases gradually, there is obviously hole shape impaired loci in end face, but does not affect Optical Fiber Transmission laser, but along with the further increase of laser power, to there is partial melting phenomenon, simultaneously end face surface generation miniature deformation; And after reaching damage threshold, laser power produces plasma, with plasma flash of light and sound, optical fiber Output of laser energy decreases; If continue irradiation laser pulse, will there will be serious melting phenomenon, optical fiber surface also will be subject to havoc;
The scheme that solves fiber end face damage is before fiber end face, to increase quartzy end cap structure, quartz end cap can effectively avoid laser under high-peak power to damage fiber end face, the making of end cap simultaneously need to adopt the way of welding, and the material of optical fiber and end cap evenly and is intactly combined;
At present, the method for most industrial connection optical fiber is to adopt electric arc as thermal source, this for the connected mode that needs to change heat source strength in quartzy end cap and fused fiber splice process be have circumscribed.And the change of connecting portion geometric configuration also requires heat-source energy and welding distance will have corresponding change; Most commercially available optical fiber splicers are all the standard communication optical fiber designs for 125um diameter in addition, due to the restriction of the aspects such as its fiber clamp, arc parameters, cannot be used for the welding of optical fiber and major diameter quartz end cap.
Summary of the invention
The object of the invention is to overcome above-mentioned deficiency, provide one to apply optical fiber end cap fusion splicing devices and welding process thereof easily, this device utilizes CO2 laser to realize the welding of large-diameter fibre-optical end cap, the output wavelength of CO2 laser is 10.6um, quartz has high absorption coefficient to the light of this wavelength, therefore can be as the thermal source of quartzy end cap welding; And this thermal source is different from traditional thermal source, CO2 laser is to carry out welding by the mode of optical radiation, can exactly laser action be arrived to join domain, and in fusion process, not introduce impurity, and this also meets the requirement of transmission high power laser light optical fibre device processing.
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 that laser generator is sent carries out beam-expanding collimation,
One catoptron, reflects the laser that penetrates beam-expanding collimation mirror to turn to;
One rotating mirror, the laser rotary that catoptron is reflected back is reflected into a conical shaped beam;
One off-axis parabolic mirror one, reflects by rotating mirror the conical shaped beam being extended to and is again reflected into circular light beam;
One off-axis parabolic mirror two, the circular light beam that off-axis parabolic mirror one is reflected focuses to the welding position of optical fiber and quartzy end cap.
A kind of optical fiber end cap of the present invention fusion splicing devices, on above-mentioned off-axis parabolic mirror one, have a through hole, and the axis of the center line of through hole and off-axis parabolic mirror one coincides, catoptron turns to the laser after reflection after this through hole, to arrive the reflecting surface of rotating mirror.
A kind of optical fiber end cap of the present invention fusion splicing devices, on above-mentioned off-axis parabolic mirror two, have a slotted eye, and the axis of the center line of slotted eye and off-axis parabolic mirror two coincides, described optical fiber is through this slotted eye, and the fiber clamp that is positioned at this slotted eye clamps optical fiber.
A kind of optical fiber end cap of the present invention fusion splicing devices, described fiber clamp comprises and is arranged at the electric platforms that slotted eye can oscilaltion, has been embedded to an optical fiber fixed mechanism in described electric platforms.
A kind of optical fiber end cap of the present invention fusion splicing devices, described rotating mirror includes catoptron body and motor, the output shaft of described motor vertically arranges, the output shaft axis of motor and the axis of off-axis parabolic mirror one coincide, and the output shaft of motor is connected with catoptron body, and catoptron body minute surface is towards the reflecting surface of off-axis parabolic mirror one, and the axis of the minute surface of catoptron body and off-axis parabolic mirror one is in an acute angle.
A kind of optical fiber end cap of the present invention fusion splicing devices, the structure of described rotating mirror is including but not limited to said structure.
A kind of optical fiber end cap of the present invention fusion splicing devices, the focal position annex of described off-axis parabolic mirror two is provided with sight glass one and sight glass 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 1, laser generator send is incident on the catoptron of a rotation after collimating apparatus;
Beam reflection is become a coniform light beam by the catoptron of step 2, rotation, and by the reflecting surface of this coniform beam reflection to off-axis parabolic mirror, this off-axis parabolic mirror will form annular light beam after conical shaped beam reflection;
Optical fiber end cap welding process of the present invention, above-mentioned steps one to three all realizes by optical fiber end cap fusion splicing devices, and described optical fiber end cap fusion splicing devices is disposed with beam-expanding collimation mirror, catoptron, rotating mirror, off-axis parabolic mirror one and off-axis parabolic mirror two along light path.
Optical fiber end cap welding process of the present invention, the implement device of said 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 to carry out welding to optical fiber and quartzy end cap, than arc welding, simple to operation, and can not introduce impurity, has improved the quality of welding, contributes to improve 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 parabolic mirror one of optical fiber end cap fusion splicing devices of the present invention.
Fig. 5 is the structural representation of the off-axis parabolic mirror 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, catoptron 2, off-axis parabolic mirror 1, rotating mirror 4, optical fiber 5, fiber clamp 6, off-axis parabolic mirror 27, quartzy end cap 8, sight glass 1, sight glass 2 10, beam-expanding collimation mirror lens 11;
Through hole 31;
Catoptron body 41, motor 42;
Slotted eye 71.
Embodiment
Referring to Fig. 1 ~ 6, a kind of optical fiber end cap fusion splicing devices 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 can regulate to adapt to by it optical fiber end cap welding of different size to hot spot;
One catoptron 2, for reflecting the laser that penetrates beam-expanding collimation mirror 1 to turn to;
One rotating mirror 4, expands to a conical shaped beam for the laser that catoptron 2 is reflected back;
One off-axis parabolic mirror 1, is reflected into circular light beam again for rotating mirror 4 is reflected to the conical shaped beam being extended to;
One off-axis parabolic mirror 27, for focusing to the next circular light beam of off-axis parabolic mirror one 3 reflection at the welding position of optical fiber 5 and quartzy end cap 8;
Said apparatus and flow process are basic conception of the present invention, and any change that those skilled in the art does according to above-mentioned design or improvement are all within the protection domain of this patent;
For Fig. 1 ~ 6, specifically set forth an optimized embodiment below:
In the present invention, the laser sending at laser instrument is through beam-expanding collimation mirror 1, catoptron 2, rotating mirror 4, after off-axis parabolic mirror 1 and off-axis parabolic mirror 27, focus to the welding position of optical fiber 5 and quartzy end cap 8, wherein, on above-mentioned off-axis parabolic mirror 1, have a through hole 31, and the axis of the center line of through hole 31 and off-axis parabolic mirror 1 coincides, catoptron 2 turns to the laser after reflection after this through hole 31, to arrive the reflecting surface of rotating mirror 4, on above-mentioned off-axis parabolic mirror 27, have a slotted eye 71, and the axis of the center line of slotted eye 71 and off-axis parabolic mirror 27 coincides, described optical fiber 5 is through this slotted eye 71, and the fiber clamp 6 that is positioned at this slotted eye 71 clamps optical fiber 5, concretely, described fiber clamp 6 comprises and is arranged at the electric platforms 61 that slotted eye 71 can oscilaltion, for moving up and down the focusing focus place that makes optical fiber 5 and the fusion point of quartzy end cap 8 be positioned at off-axis parabolic mirror 27, in described electric platforms 61, be embedded to an optical fiber fixed mechanism 62, , 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, can not interfere the carbon dioxide laser being reflected back by off-axis parabolic mirror 27,
In above-mentioned embodiment, can realize by the way for rotating mirror 4, described rotating mirror 4 includes catoptron body 41 and motor 42, the output shaft of described motor 42 vertically arranges, the output shaft axis of motor 42 and the axis of off-axis parabolic mirror 1 coincide, and the output shaft of motor 42 is connected with catoptron body 41, and catoptron body 41 minute surfaces are towards the reflecting surface of off-axis parabolic mirror 1, the axis of the minute surface of catoptron body 41 and off-axis parabolic mirror 1 is in an acute angle, thereby make the catoptron body 41 of rotation the beam reflection being incident upon thereon can be become to a conical shaped beam, certainly, for a person skilled in the art, focus on rotating mirror 4, how to realize rotation and do not lie in it, the above-mentioned consideration in complete scheme, one is easier to the scheme realizing for example, and those skilled in the art is under the enlightenment of this patent, other rotation implementations that adopt, all within the protection domain of this patent,
Meanwhile, at the welding position of optical fiber 5 and quartzy end cap 8 (being also the focal position place of off-axis parabolic mirror 2 7), annex is provided with sight glass 1 and sight glass 2 10, for positioning before welding, and in the time of 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 1, laser generator send is incident on the catoptron of a rotation after collimating apparatus;
Beam reflection is become a coniform light beam by the catoptron of step 2, rotation, and by the reflecting surface of this coniform beam reflection to off-axis parabolic mirror, this off-axis parabolic mirror will form annular light beam after conical shaped beam reflection;
Adopt the optical fiber end cap of the method welding can significantly improve the damage threshold of optical fiber, substantially do not affect Laser output efficiency and beam quality simultaneously; Can realize high-quality, optical fiber end cap welding cheaply; In enormous quantities while connecting quartzy end cap and optical fiber, utilize high strength, splendid center that carbon dioxide laser produces to aim at and advantage the displaying more significantly such as can repeat to be connected.
Claims (10)
1. an optical fiber end cap fusion splicing devices, is characterized in that: described device includes following parts:
One beam-expanding collimation mirror (1), the laser that laser generator is sent carries out beam-expanding collimation,
One catoptron (2), reflects the laser that penetrates beam-expanding collimation mirror (1) to turn to;
One rotating mirror (4), the laser rotary that catoptron (2) is reflected back is reflected into a conical shaped beam;
One off-axis parabolic mirror one (3), reflects by rotating mirror (4) conical shaped beam being extended to and is again reflected into circular light beam;
One off-axis parabolic mirror two (7), the circular light beam that off-axis parabolic mirror one (3) reflection is come focuses to the welding position of optical fiber (5) and quartzy end cap (8).
2. a kind of optical fiber end cap fusion splicing devices as claimed in claim 1, it is characterized in that: on above-mentioned off-axis parabolic mirror one (3), have a through hole (31), and the axis of the center line of through hole (31) and off-axis parabolic mirror one (3) coincides, catoptron (2) turns to the laser after reflection after this through hole (31), to arrive the reflecting surface 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: on above-mentioned off-axis parabolic mirror two (7), have a slotted eye (71), and the axis of the center line of slotted eye (71) and off-axis parabolic mirror two (7) coincides, described optical fiber (5) is through this slotted eye (71), and the fiber clamp (6) that is positioned at this slotted eye (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) comprises and is arranged at the electric platforms (61) that slotted eye (71) can oscilaltion, has been embedded to an optical fiber fixed mechanism (62) in described electric platforms (61).
5. 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 catoptron body (41) and motor (42), the output shaft of described motor (42) vertically arranges, the axis of the output shaft axis of motor (42) and off-axis parabolic mirror one (3) coincides, and the output shaft of motor (42) is connected with catoptron body (41), and catoptron body (41) minute surface is towards the reflecting surface of off-axis parabolic mirror one (3), the axis of the minute surface of catoptron body (41) and off-axis parabolic mirror one (3) is in an acute angle.
6. a kind of optical fiber end cap fusion splicing devices as claimed in claim 5, is characterized in that: the structure of described rotating mirror (4) is including but not limited to said structure.
7. a kind of optical fiber end cap fusion splicing devices as described in claim 1,2,3 or 4, is characterized in that: the focal position annex of described off-axis parabolic mirror two (7) is provided with sight glass one (9) and sight glass two (10).
8. an optical fiber end cap welding process, is characterized in that: described optical fiber end cap welding process includes following step:
The laser beam that step 1, laser generator send is incident on the catoptron of a rotation after collimating apparatus;
Beam reflection is become a coniform light beam by the catoptron of step 2, rotation, and by the reflecting surface of this coniform beam reflection to off-axis parabolic mirror, this off-axis parabolic mirror will form annular light beam after conical shaped beam reflection;
Step 3, above-mentioned annular light beam are incident on the reflecting surface of another off-axis parabolic mirror, after the reflection of this off-axis parabolic mirror, focus to focus, thereby to being positioned at the light at this focus place and weld job is carried out at the welding position of quartzy end cap.
9. a kind of optical fiber end cap welding process as claimed in claim 8, it is characterized in that: above-mentioned steps one to three all realizes 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), catoptron (2), rotating mirror (4), off-axis parabolic mirror one (3) and off-axis parabolic mirror two (7) along light path.
10. a kind of optical fiber end cap welding process as claimed in claim 9, is characterized in that: the implement device of said method is including but not limited to above-mentioned optical fiber end cap welding assembling device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| 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 CN103809246B (en) | 2016-06-01 |
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Cited By (5)
| 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 |
| CN109188609A (en) * | 2018-09-27 | 2019-01-11 | 江苏大学 | A kind of end caps welding system and welding process |
| CN111633326A (en) * | 2020-06-09 | 2020-09-08 | 相位光粒(北京)科技有限公司 | Fusion splicing device for double-clad fiber and quartz waveguide coupler |
| CN111999810A (en) * | 2020-09-16 | 2020-11-27 | 中南大学 | Automatic optical fiber end cap alignment welding device and method based on machine vision positioning |
Families Citing this family (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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| US20050117856A1 (en) * | 2002-02-26 | 2005-06-02 | Wei-Ping Huang | Fiber splicer |
| WO2008155241A2 (en) * | 2007-06-18 | 2008-12-24 | Scansonic Gmbh | Device for machining a workpiece by means of a laser beam |
| 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 |
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2014
- 2014-02-17 CN CN201410052539.1A patent/CN103809246B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US20050117856A1 (en) * | 2002-02-26 | 2005-06-02 | Wei-Ping Huang | Fiber splicer |
| WO2008155241A2 (en) * | 2007-06-18 | 2008-12-24 | Scansonic Gmbh | Device for machining a workpiece by means of a laser beam |
| 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 (7)
| 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 |
| CN109188609A (en) * | 2018-09-27 | 2019-01-11 | 江苏大学 | A kind of end caps welding system and welding process |
| CN111633326A (en) * | 2020-06-09 | 2020-09-08 | 相位光粒(北京)科技有限公司 | Fusion splicing device for double-clad fiber and quartz waveguide coupler |
| 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 |
| CN111999810A (en) * | 2020-09-16 | 2020-11-27 | 中南大学 | Automatic optical fiber end cap alignment welding device and method based on machine vision positioning |
| 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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| CN103809246B (en) | 2016-06-01 |
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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. |