CN204790068U - High -power optical collimator - Google Patents
High -power optical collimator Download PDFInfo
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- CN204790068U CN204790068U CN201520399292.0U CN201520399292U CN204790068U CN 204790068 U CN204790068 U CN 204790068U CN 201520399292 U CN201520399292 U CN 201520399292U CN 204790068 U CN204790068 U CN 204790068U
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- optical fiber
- lens
- glass bushing
- collimating apparatus
- power optical
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Abstract
The utility model relates to a high -power optical collimator, including lens, glass bushing, optic fibre, its characterized in that: lens one sides with the optic fibre core diameter butt fusion be in the same place, sheathe glass bushing again in on optic fibre to use carbon dioxide laser to melt glass bushing on the optic fibre core diameter. The focus of lens is served on the plane, optic fibre with lens the butt fusion be in the same place, the fiber end face is promptly in the focus department of lens. Glass bushing melts on optic fibre, plays the effect of peeling off covering light. This kind of optical collimator simple structure, the reliability is high, can realize high power laser's collimation.
Description
Technical field
The utility model relates to one can bear powerful optical fiber collimator, and this collimating apparatus coupling efficiency is high, good beam quality, can be used for semiconductor laser field.
Background technology
In recent years, along with the development of epitaxial growth of semiconductor material growing technology, semiconductor laser waveguiding structure optimisation technique, passivating cavity surface technology, high stability encapsulation technology, high efficiency and heat radiation technology, particularly the demand driving optical fiber of direct semiconductor Laser industry processed and applied and high power fiber laser to export high-power, the laser instrument develop rapidly of high light beam quality.The directional light that optical fiber collimator both may be used for multiple pumping chip to close bundle is coupled into optical fiber, also may be used for the light that collimating optical fibre sends, has a wide range of applications.
Along with the raising of laser power, the key transmitted in a fiber is not signal, but energy.Be be separated between traditional optical fiber collimator lens and optical fiber, optical fiber will plate anti-reflection film to reduce reflected light, and optical fiber utilizes glue to fix.After optical fiber collimator is used for high power laser, there is more problem in traditional optical fiber collimator, lens are separated with optical fiber, and causing has dust can drop on fiber end face or lensed endface, like this, produce power will pile up, cause optical fiber collimator to burn out; If the film number of plies that optical fiber plates too much just is easy to burn, the number of plies is very few will not reach requirement; The glue of fixed fiber is easy to be burnt, even if some glue can bear higher heat, but under long term high temperature working environment, and also can accelerated deterioration.
Fig. 1 is another kind of optical fiber collimator, can shown in See patent 103246019.A, described optical fiber collimator comprises a cylindrical lens 110 and optical fiber 120, at lens 110 front end face place, central axis has optical fiber duct 130, optical fiber is inserted in optical fiber duct 130, and intermediate gaps optical fiber coupling cream 140 fills up, wherein, 150 is optical glue, for the coating of naked fibre.This invention structure is simple, and without the need to the adjustment of loaded down with trivial details light path, but in the invention, used optical fiber coupling cream and optical glue, these, for after powerful laser, can volatilize material or burn out.
Summary of the invention
The purpose of this utility model is in order to overcome above-mentioned prior art Problems existing, and a kind of large-power optical fiber collimating apparatus is provided, optical fiber collimator of the present utility model is without the need to the adjustment of loaded down with trivial details light path, and parts are simplified, technique is simple, and can bear powerful laser.
The purpose of this utility model is achieved through the following technical solutions.
A kind of large-power optical fiber collimating apparatus, comprises lens, glass bushing, optical fiber, it is characterized in that: lens one side and optical fiber core diameter are welded together; Glass bushing on overlapping on optical fiber again, and use carbon dioxide laser to be melted on optical fiber core diameter by glass bushing.
Two faces of described lens, one of them face is free form surface, and a face is plane.
The center line of described lens and the center line of optical fiber are on same straight line, and fiber end face is together with a flush weld of lens.
The focus of described lens is in the plane of lens.
The free form surface of described lens is coated with anti-reflection film.
The refractive index of lens is identical with optical fiber or close.
The fusing point of described glass bushing is less than the fusing point of optical fiber.
The refractive index of described glass bushing is greater than the refractive index of optical fiber, plays the effect of peeling off cladding light.
Optical fiber collimator structure of the present utility model is simple, and reliability is high, can realize the collimation of high power laser light.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing patent 103246019.A.
Fig. 2 is the structural representation of the utility model example.
Fig. 3 is the schematic diagram of glass bushing of the present utility model.
Embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
As shown in Figure 2 and Figure 3, large-power optical fiber collimating apparatus of the present utility model comprises lens 1, glass bushing 2 and optical fiber 3, two faces of described lens 1, one of them face is free form surface, a face is plane, and the free form surface of described lens is sphere, and plane and the fiber end face core diameter of lens are welded together; Optical fiber removes one section of coat, exposes fiber core, fiber core puts glass bushing, and uses carbon dioxide laser to melt on optical fiber core diameter by glass bushing 2; The center line of described lens and the center line of optical fiber are on same straight line, and the focus of described lens, in the plane of lens, after therefore directional light can be focused on by thick lens, enters in optical fiber core diameter.The free form surface of described lens is coated with anti-reflection film.
The Refractive Index of Material of the lens that the focus of lens uses at the plane place of lens is identical with optical fiber core diameter, and like this, light enters optical fiber from thick lens, does not just have the generation of reflected light, and therefore, optical fiber does not need grinding and polishing and plated film.The fusing point of glass bushing is less than optical fiber core diameter, so just can be melted on optical fiber core diameter.Refractive index due to glass bushing is greater than optical fiber core diameter, and the light entering fibre cladding so has just been stripped out avoids cladding light to be burnt by optical fiber too much.
Claims (8)
1. a large-power optical fiber collimating apparatus, comprises lens, glass bushing, optical fiber, it is characterized in that: lens one side and optical fiber core diameter are welded together; Glass bushing on overlapping on optical fiber again, and use carbon dioxide laser to be melted on optical fiber core diameter by glass bushing.
2. a kind of large-power optical fiber collimating apparatus according to claim 1, is characterized in that: two faces of described lens, and one of them face is free form surface, and a face is plane.
3. a kind of large-power optical fiber collimating apparatus according to claim 2, is characterized in that: the center line of described lens and the center line of optical fiber are on same straight line, and fiber end face is together with a flush weld of lens.
4. a kind of large-power optical fiber collimating apparatus according to claim 2, is characterized in that: the focus of described lens is in the plane of lens.
5. a kind of large-power optical fiber collimating apparatus according to claim 2, is characterized in that: the free form surface of described lens is coated with anti-reflection film.
6. a kind of large-power optical fiber collimating apparatus according to claim 2, is characterized in that: the refractive index of described lens is identical with optical fiber or close.
7. a kind of large-power optical fiber collimating apparatus according to claim 1, is characterized in that: the fusing point of described glass bushing is less than the fusing point of optical fiber.
8. a kind of large-power optical fiber collimating apparatus according to claim 2, is characterized in that: the refractive index of described glass bushing is greater than the refractive index of optical fiber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399292.0U CN204790068U (en) | 2015-06-10 | 2015-06-10 | High -power optical collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520399292.0U CN204790068U (en) | 2015-06-10 | 2015-06-10 | High -power optical collimator |
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| Publication Number | Publication Date |
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| CN204790068U true CN204790068U (en) | 2015-11-18 |
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| CN201520399292.0U Active CN204790068U (en) | 2015-06-10 | 2015-06-10 | High -power optical collimator |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865646A (en) * | 2015-06-10 | 2015-08-26 | 武汉锐科光纤激光器技术有限责任公司 | High-power optical collimator |
| CN106654822A (en) * | 2015-11-02 | 2017-05-10 | 中国兵器装备研究院 | Integrated high power all-fiber device |
| CN106654821A (en) * | 2015-11-02 | 2017-05-10 | 中国兵器装备研究院 | Multifunctional integrated high-power all-fiber device |
-
2015
- 2015-06-10 CN CN201520399292.0U patent/CN204790068U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104865646A (en) * | 2015-06-10 | 2015-08-26 | 武汉锐科光纤激光器技术有限责任公司 | High-power optical collimator |
| CN106654822A (en) * | 2015-11-02 | 2017-05-10 | 中国兵器装备研究院 | Integrated high power all-fiber device |
| CN106654821A (en) * | 2015-11-02 | 2017-05-10 | 中国兵器装备研究院 | Multifunctional integrated high-power all-fiber device |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |