CN205608241U - Optical fiber collimator - Google Patents
Optical fiber collimator Download PDFInfo
- Publication number
- CN205608241U CN205608241U CN201620390997.0U CN201620390997U CN205608241U CN 205608241 U CN205608241 U CN 205608241U CN 201620390997 U CN201620390997 U CN 201620390997U CN 205608241 U CN205608241 U CN 205608241U
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- optical fiber
- optical lens
- face
- fiber collimator
- optical
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Abstract
The utility model relates to a laser technical field specifically discloses an optical fiber collimator, and it includes: optical lens with be fixed in the optic fibre of optical lens one end, optical lens includes preceding terminal surface and rear end face, optic fibre inserts through the butt fusion mode terminal surface before the optical lens. The utility model provides an optical fiber collimator adopts to melt the optical lens terminal surface and inserts the connected mode of peeling off coat optic fibre after melting, has promoted the fastness of optical lens with the fiber connection, and optic fibre and optical lens's logical light zone territory does not have any deformation, can guarantee optical quality, simultaneously, this optic fibre is peeled off coat part and has been plated the high refractive index membrane, the effective light of filtering higher order mode, and the optical quality of promotion output beam has fine guard action to optic fibre in addition.
Description
[technical field]
This utility model relates to laser technology field, particularly relates to a kind of optical fiber collimator.
[background technology]
Along with the extension of optic communication Yu optical-fiber laser range of application, the requirement to luminous power is more and more higher,
Especially in superpower laser, when superpower laser is exported by optical fiber collimator, optical fiber is accurate
The power density of the output end face fibre core of straight device is the highest, easily causes facet damage, therefore to optical fiber end
Flatness and the cleannes in face have high requirements, and not only increase the processing cost of optical fiber collimator, and make
Optical fiber collimator is higher to using environmental requirement, there is also hidden danger the service life of optical fiber collimator simultaneously.
As it is shown in figure 1, be the attachment structure schematic diagram of existing fiber collimator.This optical fiber collimator bag
Including optical lens 1 and optical fiber 2, optical fiber 2 is fixed by viscose glue in capillary tube 3, in order to improve return loss,
Optical lens 1 and optical fiber 2 need to be polished to the angle of wedge face of a band certain angle, this optical fiber collimator
Package assembly there is problems in that the angle of wedge face of optical lens 1 and optical fiber 2 is required for grinding and polishing
Coating film treatment, the process loaded down with trivial details time-consuming length of technique, and optical lens 1 and optical fiber 2 when collimator makes
Distance need accurate debugging, technology difficulty is big, completed optical consistency of performance is poor；Optical lens 1
Cause optical fiber collimator to go out light with the angle of wedge face of optical fiber 2 to have certain drift angle, affect the optocoupler of device below
Close efficiency；The power density of optical fiber 2 end face is big, and power bearing ability is extremely restricted.
[utility model content]
This utility model aims to solve the problem that the welding end face of existing fiber collimator optical lens and optical fiber all needs
Want grinding and polishing coating film treatment, process the loaded down with trivial details time-consuming length of technique, collimator make testing and measuring technology difficulty big,
Completed optical consistency of performance is poor；The angle of wedge face of optical lens and optical fiber causes optical fiber collimator to go out light to be had
Certain drift angle, affects the coupling efficiency of device below；The power density of fiber end face is big, and power holds
The problem being extremely restricted by ability, it is provided that a kind of optical fiber collimator, technical scheme is as follows:
This utility model provides a kind of optical fiber collimator, including: optical lens be fixed on described optics
The optical fiber of lens one end, described optical lens includes that front end face and rear end face, described optical fiber pass through welding
Mode inserts described optical lens front end face.
In certain embodiments, described optical fiber inserts a length of of described optical lens front end face part
5～50 μm.
In certain embodiments, described optical fiber is not inserted into the part of described optical lens and includes peeling off coating
Layer segment and unstripped coat part, described stripping coat part is coated with high refractive index film.
In certain embodiments, a length of the 10～100mm of high refractive index film part it are coated with described in.
In certain embodiments, the refractive index of described high refractive index film is more than 1.45.
In certain embodiments, the thickness of described high refractive index film is less than 10 μm.
In certain embodiments, the area of section of described optical lens front end face cutting more than described optical fiber
Face area.
In certain embodiments, described optical lens rear end face is sphere.
In certain embodiments, described optical lens rear end face is coated with optical anti-reflective film.
In certain embodiments, a length of the 3～30mm of described optical lens.
Having the beneficial effects that of this utility model specific embodiment uses and will insert after optical lens end face melting
Enter to peel off the connected mode of coat optical fiber, improve the fastness that optical lens is connected with optical fiber, light
The territory, transparent zone of fibre and optical lens, without any deformation, does not affect beam quality；Meanwhile, this optical fiber stripping
It is coated with high refractive index film from coat part, the light of higher order mode can not only be effectively filtered out, improve defeated
Go out the optical quality of light beam, and optical fiber is had good protective effect.
[accompanying drawing explanation]
Fig. 1 is the attachment structure schematic diagram of existing fiber collimator；
The attachment structure schematic diagram of the optical fiber collimator that Fig. 2 provides for this utility model embodiment；
The attachment structure schematic diagram of the optical fiber collimator that Fig. 3 provides for another embodiment of this utility model.
[detailed description of the invention]
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with
Drawings and Examples, are further elaborated to this utility model.Should be appreciated that this place is retouched
The specific embodiment stated, only in order to explain this utility model, is not used to limit this utility model.
As in figure 2 it is shown, the attachment structure signal of the optical fiber collimator provided for this utility model embodiment
Figure, this utility model embodiment provides a kind of optical fiber collimator, including: optical lens 1 be fixed on
The optical fiber 2 of described optical lens 1 one end, described optical lens 1 includes front end face 11 and rear end face 12,
Described optical fiber 2 inserts described optical lens 1 front end face 11, described optical lens 1 by welding mode
The area of section of front end face 11 is more than the area of section of described optical fiber 2, and this requirement is to ensure that optical fiber
2 front end faces 11 that can insert described optical lens 1 smoothly, in this enforcement, before optical lens 1
The diameter of section scope of end face 11 is 0.5～3mm, and described optical lens 1 rear end face 12 is sphere,
The rear end face 12 of described optical lens 1 is coated with optical anti-reflective film, it is therefore an objective to improve the light transmittance of light,
A length of the 3～30mm of described optical lens 1；Described optical fiber 2 inserts described optical lens 1 front end face
A length of 5～50 μm of part 21, this length can according to the radius of curvature of optical lens 1 and length and
The factors such as the refractive index of optical fiber 2 are adjusted, and described optical fiber 2 is not inserted into the portion of described optical lens 1
Divide and include peeling off coat part 22 and unstripped coat part 23, described stripping coat part
22 are coated with high refractive index film 3, and the refractive index of described high refractive index film 3 needs more than optical fiber 2 fibre core
Refractive index, thus the stripping out of high-order mode in ensureing covering, in the present embodiment, described high refractive index film 3
Refractive index more than 1.45, described in be coated with a length of the 10～100mm of high refractive index film 3 part, described
The thickness of high refractive index film 3 is less than 10 μm, does not affect the flexibility of optical fiber 2, it is to avoid stress damages
Output beam quality, the effect of this high refractive index layer on the one hand can be to the light of optical fiber 2 higher order mode
(including laser high-order mode, residual pump light etc.) carries out strip process, it is to avoid the light handle of higher order mode
Optical fiber collimator device below burns out, and ensures the beam quality of output beam simultaneously.On the other hand can
To protect optical fiber 2, this high refractive index layer is compactness good film layer, is possible to prevent optical fiber 2 growing
After phase use, crack growth becomes fragile.
Making side below in conjunction with a kind of optical fiber collimator that this utility model is provided by specific embodiment
Method is further detailed: by optical lens 1 with optical fiber 2 by high-temperature electric arc or laser welding
Mode be welded together.It is embodied as follows: the front end face 11 of optical lens 1 is carried out precision
Polishing, but without plated film, the rear end face 12 of optical lens 1 plates optical anti-reflective film, by optical lens
Mirror 1 is placed on fixed support, by the front end face 11 of arc discharge sintering optical lens 1, makes front end
The surface in face 11 is in melting state, at this moment advances optical fiber 2, makes the optical fiber after divesting coat 2 one
Being inserted partially into optical lens 1 internal, in the present embodiment, intubating length is 5～50 μm.This molten
Connecing method, the transparent zone of optical fiber 2 and optical lens 1 is without any deformation, it is ensured that good light beam
Quality, relative to the mode of conventional fused fiber splice (combining after two end face meltings simultaneously),
The method is greatly improved fastness.
The optical fiber collimator that the present embodiment provides, uses and is coated with inserting after optical lens end face melting to peel off
The connected mode of clad optical fiber, improves the fastness that optical lens is connected, meanwhile, this light with optical fiber
Fine coat part of peeling off is coated with high refractive index film, can not only effectively filter out the light of higher order mode, promote
The optical quality of output beam, and optical fiber is had good protective effect.
The foregoing is only preferred embodiment of the present utility model, not new in order to limit this practicality
Type, all any amendment, equivalent and improvement made within spirit of the present utility model and principle
Deng, within should be included in protection domain of the present utility model.
Claims (10)
1. an optical fiber collimator, including: optical lens and the light being fixed on described optical lens one end
Fibre, described optical lens includes front end face and rear end face, it is characterised in that described optical fiber passes through welding
Mode inserts described optical lens front end face.
2. optical fiber collimator as claimed in claim 1, it is characterised in that described optical fiber inserts described
A length of 5～50 μm of optical lens front end face part.
3. optical fiber collimator as claimed in claim 1, it is characterised in that described optical fiber is not inserted into institute
The part stating optical lens includes peeling off coat part and unstripped coat part, and described stripping is coated with
Coating portion is coated with high refractive index film.
4. optical fiber collimator as claimed in claim 3, it is characterised in that described in be coated with high index of refraction
A length of the 10 of film part～100mm.
5. optical fiber collimator as claimed in claim 3, it is characterised in that described high refractive index film
Refractive index is more than 1.45.
6. optical fiber collimator as claimed in claim 3, it is characterised in that described high refractive index film
Thickness is less than 10 μm.
7. optical fiber collimator as claimed in claim 1, it is characterised in that described optical lens front end
The area of section in face is more than the area of section of described optical fiber.
8. optical fiber collimator as claimed in claim 1, it is characterised in that described optical lens rear end
Face is sphere.
9. optical fiber collimator as claimed in claim 8, it is characterised in that described optical lens rear end
Face is coated with optical anti-reflective film.
10. optical fiber collimator as claimed in claim 1, it is characterised in that described optical lens
A length of 3～30mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390997.0U CN205608241U (en) | 2016-04-29 | 2016-04-29 | Optical fiber collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620390997.0U CN205608241U (en) | 2016-04-29 | 2016-04-29 | Optical fiber collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205608241U true CN205608241U (en) | 2016-09-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620390997.0U Active CN205608241U (en) | 2016-04-29 | 2016-04-29 | Optical fiber collimator |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045463A (en) * | 2018-01-15 | 2019-07-23 | 中国科学院上海光学精密机械研究所 | A kind of connector and method of fused fiber splice |
| CN110967795A (en) * | 2019-12-11 | 2020-04-07 | 瑞尔通(苏州)医疗科技有限公司 | Coupling structure applying end cap lens |
| CN113237850A (en) * | 2021-04-29 | 2021-08-10 | 广州永士达医疗科技有限责任公司 | Optical fiber collimator for OCT (optical coherence tomography), manufacturing method and OCT equipment |
| CN114192971A (en) * | 2021-06-15 | 2022-03-18 | 苏州创鑫激光科技有限公司 | Laser processing light path system, method and application thereof |
-
2016
- 2016-04-29 CN CN201620390997.0U patent/CN205608241U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110045463A (en) * | 2018-01-15 | 2019-07-23 | 中国科学院上海光学精密机械研究所 | A kind of connector and method of fused fiber splice |
| CN110967795A (en) * | 2019-12-11 | 2020-04-07 | 瑞尔通(苏州)医疗科技有限公司 | Coupling structure applying end cap lens |
| CN113237850A (en) * | 2021-04-29 | 2021-08-10 | 广州永士达医疗科技有限责任公司 | Optical fiber collimator for OCT (optical coherence tomography), manufacturing method and OCT equipment |
| CN114192971A (en) * | 2021-06-15 | 2022-03-18 | 苏州创鑫激光科技有限公司 | Laser processing light path system, method and application thereof |
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