CN101013183A - Thick core optical fibre laser welder and welding method - Google Patents
Thick core optical fibre laser welder and welding method Download PDFInfo
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- CN101013183A CN101013183A CN 200710036882 CN200710036882A CN101013183A CN 101013183 A CN101013183 A CN 101013183A CN 200710036882 CN200710036882 CN 200710036882 CN 200710036882 A CN200710036882 A CN 200710036882A CN 101013183 A CN101013183 A CN 101013183A
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Abstract
It is a coarse fiber laser welding device and welding method for coarse fiber welding, using a small 100-watt CO2 laser as light source, and using an oral-shaped lens to form the laser beam of the laser to the ring beam, and bowl-shape mirror respecting this ring laser beam to the focus in the center of the bowl-shape mirror, and the welding fiber is placed on the position of focus. There is a hole in the center of the bowl-shape mirror, and the fiber passing through this hole, making the fiber welding part locating in the center of the bowl-shape mirror focus, and after the ring laser focusing, it can uniform irradiate on the welding position around the fiber. Control power and power output time of CO2 laser, to weld different diameter fibers. The invention solves the welding problem of the coarse fiber, making the fiber welding point uniform and smooth.
Description
Technical field
The present invention relates to the optical fiber welding, particularly a kind of large core fibre laser-welding machine and welding method that large core fibre more than diameter 400 μ is welded together.
Background technology
The prior art that realizes the large core fibre welding has two kinds: a kind of is traditional electric spark welding, and the communication optical fiber welding of this technology below diameter 200 μ is very ripe, but is used for the above optical fiber welding of diameter 400 μ, also is not very desirable at present.To be the ring-type electric heating body apply high temperature to the face to be welded of optical fiber to another kind welds.
Summary of the invention
The object of the present invention is to provide a kind of large core fibre laser-welding machine and welding method that is used for the large core fibre welding,, make the welding point uniform and smooth of optical fiber to solve the Welding Problems of diameter greater than the large core fibre of 400 μ.
Basic thought of the present invention is: adopt small-sized hectowatt grade CO2 laser instrument as light source, with the lens of a date core shaped the laser beam reshaping of laser instrument output light beam circlewise, bowl-shape catoptron is the focus of the laser-bounce of this beam ring shape to bowl-shape catoptron the rim of a bowl center, and optical fiber to be welded just is placed on the focal position.There is a circular hole at the center of bowl-shape catoptron, and optical fiber passes from this circular hole, makes the optical fiber welding position be positioned at the center of bowl-shape reflector focal point, and annular laser can be radiated on the point to be welded by wound fiber after focusing on equably.The power and the power output time of control CO2 laser instrument just can weld different diameter fibers.Whole soldering apparatus is made up of bowl-shape focus lamp, fiber clamp, fiber clamp positioner that Small-sized C O2 laser instrument, laser power and output time controller, center have aperture.The invention solves the Welding Problems of large core fibre, make the welding point uniform and smooth of optical fiber.
Concrete technical solution of the present invention is as follows:
A kind of large core fibre laser-welding machine is characterized in that this soldering apparatus comprises a CO
2Laser instrument is at this CO
2The working direction of Laser Output Beam is provided with the round-meshed bowl-shape reflect focalization mirror of date core shaped double cone lens and bowl center, the end, two fibre clip clamping optical fiber to be welded, and propping up of this fibre clip is placed on the three-dimensional mobile device described CO
2The laser beam of laser instrument output is shaped to the laser beam irradiation of annular distribution to described bowl-shape reflect focalization mirror by described date core shaped double cone lens, focus on the focal position of this bowl-shape reflect focalization mirror, adjust described three-dimensional mobile device, make joints two fibre clip clampings and two sections optical fiber to be welded that aim at mutually place the focal position of described bowl-shape reflect focalization mirror.
Described CO
2Laser instrument is the CO of hectowatt grade
2Laser instrument, 0-100W is adjustable continuously for the output laser power, and laser output time is controlled, and the laser beam pattern is TEM00.
Described date core shaped double cone lens are by the little optical material of 10.6 μ wavelength laser transmission losss is made, its basic configuration is a date core shaped double cone body broad in the middle pointed at both ends, the maximum gauge place is greater than the diameter of described laser beam, conical surface angle is the Brewster angle of 10.6 μ optical maser wavelengths, two awl points are placed on the optical axis during use, one of them awl point is facing to the incident direction of laser beam, and another awl point is facing to exit direction.
The bore of described bowl-shape reflect focalization mirror is greater than the external diameter of described annular laser bundle; The diameter of center hole is less than the internal diameter of described annular laser bundle, greater than the diameter of fibre clip; The focus of described bowl-shape reflect focalization mirror is positioned at the center of catoptron the rim of a bowl position.
There is a slit position of the support of the corresponding fibre clip in the below of the circular hole of described bowl-shape reflect focalization mirror, and the width of this slit equates with the thickness of described support, the gold-plated film of the reflecting surface of this bowl-shape reflect focalization mirror.
Utilize the method for described laser large core fibre soldering apparatus, comprise the following steps: the large core fibre welding
1. with two optical fiber to be welded two fibre clip clampings respectively, optical fiber to be welded passes the circular hole of bowl-shape reflect focalization mirror, by regulating the focal position that described three-dimensional mobile device makes the two welding ends butt joint of described two optical fiber to be welded and welding end placed described bowl-shape reflect focalization mirror;
2. adjust CO
2The laser output power of laser instrument makes described annular laser bundle can focus on the position to be welded that is radiated at optical fiber by bowl-shape reflect focalization mirror, starts CO
2The position to be welded that laser instrument, laser focusing are radiated at optical fiber produces the high temperature melt fiber optic materials, and two sections optical fiber are linked together;
3. will weld good optical fiber takes out from the slit of the below of the circular hole of described bowl-shape reflect focalization mirror.
The advantage of large core fibre laser-welding machine of the present invention is:
1. the heating power at fused fiber splice face place can be controlled accurately;
2. homogeneous heating;
3. simple structure.
Description of drawings
Fig. 1 is the laser shaping part-structure synoptic diagram of large core fibre laser-welding machine of the present invention.
Fig. 2 is the large core fibre clamping and the welding portion structural representation of large core fibre soldering apparatus of the present invention.
Embodiment
The invention will be further described below in conjunction with embodiment and accompanying drawing, but should not limit variation range of the present invention with this.
See also illustrated in figures 1 and 2ly, have figure as seen, large core fibre laser-welding machine of the present invention comprises a CO
2Laser instrument 1 is at this CO
2The working direction of laser instrument 1 output beam 2 is provided with the bowl-shape reflect focalization mirror 5 that date core shaped double cone lens 3 and bowl center, the end have circular hole 51, two sections optical fiber 7 to be welded of two fibre clip 6 clampings, the support 8 of this fibre clip 6 places on the three-dimensional mobile device 9, described CO
2The laser beam 4 that the laser beam 2 of laser instrument 1 output is shaped to annular distribution by described date core shaped double cone lens 3 shines on the described bowl-shape reflect focalization mirror 5, be focused the focal position of this bowl-shape reflect focalization mirror 5, adjust described three-dimensional mobile device 9, make joints two fibre clip 6 clampings and two sections optical fiber 7 to be welded that aim at mutually place the focal position of described bowl-shape reflect focalization mirror 5.
Described CO
2Laser instrument 1 is the CO of hectowatt grade
2Laser instrument, 0-100W is adjustable continuously for the output laser power, and laser output time is controlled, and the laser beam pattern is TEM00, beam diameter 5mm.
Described date core shaped double cone lens 3 are by the little optical material of 10.6 μ wavelength laser transmission losss is made, its basic configuration is a date core shaped double cone body broad in the middle pointed at both ends, the maximum gauge place is greater than the diameter of described laser beam 2, conical surface angle is the Brewster angle of 10.6 μ optical maser wavelengths, two awl points are placed on the optical axis during use, one of them awl point is facing to the incident direction of laser beam 2, and another awl point is facing to exit direction.
The bore of described bowl-shape reflect focalization mirror 5 is greater than the external diameter of described annular laser bundle 4, the diameter of center hole is less than the internal diameter of described annular laser bundle 4, greater than the diameter of fibre clip 6, the focus of described bowl-shape reflect focalization mirror 5 is positioned at the center of catoptron the rim of a bowl position.
There is a slit (not shown) position of the support 8 of the corresponding fibre clip 6 in the below of the circular hole 51 of described bowl-shape reflect focalization mirror 5, and the width of this slit equates with the thickness of described support, so that the taking-up of welding optical fiber well.The gold-plated film of the reflecting surface of this bowl-shape reflect focalization mirror.
Utilize the method for laser large core fibre soldering apparatus of the present invention, comprise the following steps: the large core fibre welding
1. with two fibre clip 6 clampings respectively of two optical fiber to be welded 7 usefulness, optical fiber 7 to be welded passes the circular hole of bowl-shape reflect focalization mirror 5, by regulating the focal position that described three-dimensional mobile device 9 makes the two welding ends butt joint of described two optical fiber to be welded 7 and welding end placed described bowl-shape reflect focalization mirror 5;
2. adjust CO
2The laser output power of laser instrument 1 makes described annular laser bundle 4 can focus on the position to be welded that is radiated at optical fiber 7 by bowl-shape reflect focalization mirror 5, starts CO
2The position to be welded that laser instrument 1, laser focusing are radiated at optical fiber 7 produces the high temperature melt fiber optic materials, and two sections optical fiber are linked together;
3. will weld good optical fiber 7 unloads and takes out from the slit of the below of the circular hole (51) of bowl-shape reflect focalization mirror (5) from described two fibre clip 6.
Described fibre clip 6 is commercially available, and its support 8 usefulness sheet steel plates are made, and is connected on the three-dimensional mobile device 9, and three-dimensional mobile device 9 drives optical fiber 7 respectively and makes its end face alignment, and makes face to be welded be in the focal position of laser.Laser focusing is radiated at the position to be welded of optical fiber 7, according to different fibre diameters at CO
2Select laser output power and laser output time on the laser instrument, melt the fiber optic materials at position to be welded, two optical fiber are welded together.
Laser large core fibre soldering apparatus of the present invention is used for the above large core fibre welding experiment of diameter 400 μ and shows, have practical, the characteristics of welding point uniform and smooth.
Claims (7)
1, a kind of large core fibre laser-welding machine is characterized in that this soldering apparatus comprises a CO
2Laser instrument (1) is at this CO
2The working direction of laser instrument (1) output beam is provided with date core shaped double cone lens (3) and bowl center, the end has the bowl-shape reflect focalization mirror (5) of circular hole (51), two fibre clip (6) clamping optical fiber to be welded (7), the support (8) of this fibre clip (6) places on the three-dimensional mobile device (9).
2, large core fibre laser-welding machine according to claim 1 is characterized in that described CO
2Laser instrument (1) is that a kind of power 1-100W is adjustable continuously, laser output time is controlled, and the laser beam pattern is TEM00 CO
2Laser instrument.
3, large core fibre laser-welding machine according to claim 1, it is characterized in that described date core shaped double cone lens (3) are by the little optical material of 10.6 μ wavelength laser transmission losss is made, its basic configuration is a date core shaped double cone body broad in the middle pointed at both ends, the maximum gauge place is greater than the diameter of described laser beam (2), conical surface angle is the Brewster angle of 10.6 μ optical maser wavelengths, two awl points are placed on the optical axis during use, one of them awl point is facing to the incident direction of laser beam (2), and another awl point is facing to exit direction.
4, large core fibre laser-welding machine according to claim 1, it is characterized in that the external diameter of the bore of described bowl-shape reflect focalization mirror (5) greater than described annular laser bundle (4), the diameter of center hole is less than the internal diameter of described annular laser bundle (4), greater than the diameter of fibre clip (6), the focus of described bowl-shape reflect focalization mirror (5) is positioned at the center of catoptron the rim of a bowl position.
5, large core fibre laser-welding machine according to claim 1, there is a slit below that it is characterized in that the circular hole (51) of described bowl-shape reflect focalization mirror (5) corresponding to the position of the support (8) of fibre clip (6), and the width of this slit equates with the thickness of described support.
6, large core fibre laser-welding machine according to claim 1 or 5 is characterized in that the gold-plated film of reflecting surface of described bowl-shape reflect focalization mirror (5).
7, utilize the method for the described laser large core fibre of claim 1 soldering apparatus, be characterised in that to comprise the following steps: the large core fibre welding
1. two optical fiber to be welded (7) are used two fibre clip (6) clamping respectively, optical fiber to be welded (7) passes the circular hole of bowl-shape reflect focalization mirror (5), by regulating the focal position that described three-dimensional mobile device (9) makes the two welding ends butt joint of described two optical fiber to be welded (7) and welding end placed described bowl-shape reflect focalization mirror (5);
2. adjust CO
2The laser output power of laser instrument (1) makes described annular laser bundle (4) can focus on the position to be welded that is radiated at optical fiber (7) by bowl-shape reflect focalization mirror (5), starts CO
2The position to be welded that laser instrument (1), laser focusing are radiated at optical fiber (7) produces the high temperature melt fiber optic materials, and two sections optical fiber are linked together;
3. will weld good optical fiber (7) takes out from the slit of the below of the circular hole (51) of described bowl-shape reflect focalization mirror (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100368827A CN100451702C (en) | 2007-01-26 | 2007-01-26 | Thick core optical fibre laser welder and welding method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100368827A CN100451702C (en) | 2007-01-26 | 2007-01-26 | Thick core optical fibre laser welder and welding method |
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| Publication Number | Publication Date |
|---|---|
| CN101013183A true CN101013183A (en) | 2007-08-08 |
| CN100451702C CN100451702C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2007100368827A Expired - Fee Related CN100451702C (en) | 2007-01-26 | 2007-01-26 | Thick core optical fibre laser welder and welding method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777279A (en) * | 2014-01-24 | 2014-05-07 | 中国科学院半导体研究所 | Optical fiber end cap butt fusion system |
| CN107764294A (en) * | 2017-11-03 | 2018-03-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of optical fiber Fabry-Perot sensor welding packaging system |
| CN109001862A (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 multiple spot ring-shaped light spot welding optic fibre end cap |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006215577A (en) * | 1995-08-31 | 2006-08-17 | Fujitsu Ltd | Manufacturing equipment of optical module assembly |
| JP2003048092A (en) * | 2001-07-30 | 2003-02-18 | Nidec Copal Corp | Laser welding device |
| JP2003340582A (en) * | 2002-05-23 | 2003-12-02 | Mitsubishi Heavy Ind Ltd | Apparatus and method for laser welding |
| CN1560659A (en) * | 2004-03-05 | 2005-01-05 | 长春理工大学 | Coupling positioning method of fibre-optical and semiconductor laser |
| CN201017061Y (en) * | 2007-01-26 | 2008-02-06 | 中国科学院上海光学精密机械研究所 | Thick-core optical fiber laser beam welding device |
-
2007
- 2007-01-26 CN CNB2007100368827A patent/CN100451702C/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103777279A (en) * | 2014-01-24 | 2014-05-07 | 中国科学院半导体研究所 | Optical fiber end cap butt fusion system |
| CN103777279B (en) * | 2014-01-24 | 2017-01-11 | 中国科学院半导体研究所 | Optical fiber end cap butt fusion system |
| CN107764294A (en) * | 2017-11-03 | 2018-03-06 | 中国航空工业集团公司北京长城计量测试技术研究所 | A kind of optical fiber Fabry-Perot sensor welding packaging system |
| CN107764294B (en) * | 2017-11-03 | 2020-01-10 | 中国航空工业集团公司北京长城计量测试技术研究所 | Fusion welding packaging device for optical fiber Fabry-Perot sensor |
| CN109001862A (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 multiple spot ring-shaped light spot welding optic fibre end cap |
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| CN100451702C (en) | 2009-01-14 |
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