CN203259687U - Optical fiber collimator - Google Patents
Optical fiber collimator Download PDFInfo
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- CN203259687U CN203259687U CN2013202964924U CN201320296492U CN203259687U CN 203259687 U CN203259687 U CN 203259687U CN 2013202964924 U CN2013202964924 U CN 2013202964924U CN 201320296492 U CN201320296492 U CN 201320296492U CN 203259687 U CN203259687 U CN 203259687U
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Abstract
An optical fiber collimator is provided. The optical fiber collimator includes a particularly special-shaped lens, an optical fiber and an optically-used structural bonding adhesive; the particularly special-shaped lens and the optical fiber are welded together; the optically-used structural bonding adhesive is bonded around a wielding point of the optical fiber and the particularly special-shaped lens; the optical fiber and the particularly special-shaped lens are made from the same material; grinding and polishing as well as film coating are not needed to be performed on a joint of the optical fiber and the lens; the lens is formed through adopting compression molding technology, so the lens can be produced in a batched mode; the size of the lens can be made to be so small that the size of the lens can be same with the diameter of the optical fiber, and therefore, the optical fiber collimator can be miniaturized and integrated maximally; the optical fiber collimator has few components, and therefore, a welding position of the optical fiber and the lens only needs to be centered such that welding can be performed without complex optical path adjustment required, and as a result, an assembly process can be more convenient and faster, and cost can be lower; and the optical fiber and the lens are made from the same material, and therefore, light passes through the fewest medium layers, and return loss can be decreased to the lowest degree.
Description
[technical field]
The utility model relates to optical fiber communication network and optical fiber communication equipment field, relates in particular to a kind of optical fiber collimator, and this optical fiber collimator collimates the light that optical fiber emits.
[background technology]
The optical communication network is comprised of a plurality of optical device, and accurate degree and coupling efficiency between optical fiber and other optical fibre devices affect the performance of optical communication network.Therefore need optical fiber collimator to improve coupling efficiency between optical fiber and optical fiber or optical fiber and the device, minimizing insertion loss.Optical fiber collimator is one of basic device that makes up on light communication system and network, continuous progress along with optical fiber communication technology, the manufacturing of optical fiber collimator towards the complexity, the reduced volume that reduce structure, be lowered into this direction and develop, continuous in enormous quantities and integrated production.
With reference to the accompanying drawings 1, this accompanying drawing has embodied the structure of optical fiber collimator 10 used in the ordinary optical collimator apparatus.This optical fiber collimator 10 is comprised of optical fiber 11, kapillary 12, GRIN Lens 14, glass tube 15, metal tube 16.Optical fiber 11 is in kapillary 12 pores, and fixing by viscose glue 13, kapillary 12 end face 12a places have the grinding oblique angle, this oblique angle and vertical plane folder 8 degree angles, and plating antireflection film 12a.The both ends of the surface grinding and polishing of GRIN Lens 14 also plates antireflection film 14a, 14b; Kapillary 12 is concentric by using glass tube 15 to locate with GRIN Lens 14, and antireflection film 12a and 14a position use viscose glue 13 to be fixed in the glass tube 15 through adjusting when reaching best optical property; The metal tube 16 of at last optical fiber 11, kapillary 12, GRIN Lens 14, glass tube 15 being packed into is interior and bonding, finishes the optics assembling.There is following problem in the package assembly of this optical fiber collimator 10: GRIN Lens, kapillary all need to process through the grinding and polishing of end face, process length consuming time, technology difficulty large, be difficult to guarantee yield rate, incident is that production efficiency is lower; The part that assembling needs is many, and assembling process is loaded down with trivial details, must be through the cooperation more than 3 times, bonding process; Central shaft capillaceous must be coaxial with the fibre core axle core of GRIN Lens plating, and in order to reach best optical property, guarantee highly coaxially, just need to repeatedly adjust the position of antireflection film 12a, 14a, adjustment process length consuming time, operating personnel's technique proficiency is required high; The return loss of collimating apparatus is large: light is by the antireflection film of antireflection film, GRIN Lens and the GRIN Lens end face of kapillary, kapillary end face, still have part light to reflect at its interface, boundary, the light of reflection can disturb harmonic light in the laserresonator, cause laser instrument unstable, simultaneously so that the return loss of collimating apparatus is excessive.
Fig. 2 is another kind of simple optics collimator 20, can consult explanation shown in the patent No. 02147235.1, and described optical fiber collimator 20 comprises the rod-shaped lens 21 of gradually changed refractive index and the optical fiber 22 that is connected with rod-shaped lens 21 optics; Form antireflection film 21b on the end face of rod-shaped lens 21, reflectance coating 21b is comprised of tens of layer dielectrics; After certain distance is adjusted on the end face of optical fiber 22 and antireflection film 21b light incident side surface, use taper optical cement 23 to combine.There is following problem in this optical fiber collimator 20: rod-shaped lens 21 needs the grinding and polishing end face, needs for a long time, and causes the reduction of yield rate and production efficiency; Optical fiber 22 needs repeatedly to adjust with the core centre of rod-shaped lens 21, could best optical property, therefore before finally finishing, need through loaded down with trivial details optical beam path adjustment, consumption consuming time artificial; The return loss of collimating apparatus (RL) is large: because the reflectance coating 21b that light forms by tens of layer dielectrics such as optical fiber 22 end faces, optical cement 23, always having part light on its interface reflects, even plate antireflective film at the interface, the light that reflects can disturb the harmonic light in the laserresonator, so that laser instrument is unstable, also so that collimating apparatus return loss (RL) is large.The structure of this collimating apparatus 20 is relatively fixing, further minification and integrated.
[summary of the invention]
The utility model has proposed for above situation that a kind of optical element is few, size is little, assembling process is simple, can at utmost integrated optical fiber collimator, and the technique that has proposed to make this optical fiber collimator.The reflecting medium of this collimating apparatus is few, the optics adjustment process simple, its lens can adopt multiple pitch.
A kind of method for making of optical fiber collimator at first needs to be the die sinking of Idiotype lens, the mould that making can Foundry Production Idiotype lens; This mould has die cavity, and this die cavity comprises cylinder units, circular cone unit and free form surface unit, and this cylinder units comprises the first plane, the second plane and a curved surface, and curved surface connects the first plane and the second plane; And this circular cone unit comprises plane of greatest diameter, minimum diameter plane and be connected plane of greatest diameter and the conical surface on minimum diameter plane, and plane of greatest diameter and minimum diameter plane are the circular flat of vertical conical central axis; And this free form surface unit comprises a circular flat and the free form surface that is formed at this circular flat; The circular cone unit is connected the first plane of cylinder units with its plane of greatest diameter; The circular flat diameter of free form surface unit and the equal diameters of cylinder units, free form surface unit are connected the second plane of cylinder units with its circular flat; Pour into silica flour to the die cavity of this mould, and cast out the Idiotype lens through high-temperature fusion, these Idiotype lens comprise that tapered segment, column part and free form surface partly form; Free form surface end face plating reflectance coating partly at the Idiotype lens; At the tapered segment of Idiotype lens, its minimum diameter equates with fibre diameter, fiber end face is bonded on the minimum diameter plane of Idiotype lens tapered segment by the high temperature melting connection technology; Bonding point increases fusing point protection structure.
The maximum gauge of described circular cone unit and the equal diameters of cylinder units.
The maximum gauge of described circular cone unit is less than the diameter of cylinder units.
Described fusing point protection structure is to be centered around bonding point optics construction bonds glue on every side.
Described high temperature melting connection technology refers to laser or arc welding technology.
Described free form surface refers to convex-concave sphere, convex-concave aspheric surface and arcwall face.
A kind of optical fiber collimator, comprising Idiotype lens, optical fiber and optics construction bonds glue, described Idiotype lens and optical fibre high temp are welded together, and described optics uses the construction bonds glue bond around the fusion point of optical fiber and Idiotype lens; Described Idiotype lens comprise tapered segment, column part and free form surface part, and this column part comprises the first plane, the second plane and a curved surface, and curved surface connects the first plane and the second plane; And this tapered segment comprises plane of greatest diameter, minimum diameter plane and be connected plane of greatest diameter and the conical surface on minimum diameter plane, and plane of greatest diameter and minimum diameter plane are the circular flat of vertical conical central axis; And this free form surface partly comprises a circular flat and the free form surface that is formed at this circular flat; Tapered segment is connected the first plane of column part with its plane of greatest diameter; The circular flat diameter of free form surface part and the equal diameters of column part, the free form surface part is connected the second plane of column part with its circular flat, the diameter on tapered segment minimum diameter plane equates with fibre diameter, described Idiotype lens are welded together with its tapered segment minimum diameter plane and fiber end face, are coated with reflectance coating at described free form surface.
The maximum gauge of described tapered segment and the equal diameters of column part.
The maximum gauge of described tapered segment is less than the diameter of column part.
Described free form surface refers to convex-concave sphere, convex-concave aspheric surface and arcwall face.
The special plane that is deformed into of described free form surface.
Described optical fiber is consistent with the material of described Idiotype lens.
Improvement owing to structure in the utility model has the following advantages: optical fiber and lens junction do not need grinding and polishing and plated film; Lens use compression molding technology, can produce in enormous quantities; Physical dimension can be accomplished extremely small, size small to the fibre diameter consistent size, optical fiber collimator is can be to greatest extent microminiaturized, integrated; Parts are few, and it is weldable that optical fiber and lens weld only need simple centering, need not loaded down with trivial details light path adjustment, and assembling process is more simple and direct, and cost is lower.Optical fiber is consistent with the lens material, and the dielectric layer that light passes through is minimum, and return loss is near minimum.
[description of drawings]
Fig. 1 is the structural representation of the utility model prior art one;
Fig. 2 is the structural representation of the utility model prior art two;
Fig. 3 is side structure rough schematic view among the utility model embodiment 1;
Fig. 4 makes the as shown in Figure 3 die structure dwg of Idiotype lens;
Fig. 5 is side structure rough schematic view among the utility model embodiment 2.
Wherein: 100, mould; 110 cylinder units 111, the first plane; 112, curved surface; 113, the second plane; 120 circular cone unit; 121, minimum diameter plane; 122, the conical surface; 123, plane of greatest diameter; 130, free form surface unit; 131, circular flat; 132, free form surface; 200,300, Idiotype lens; 210,310, column part; The 211,311, first plane; 212,312, curved surface; The 213,313, second plane; 220,320, tapered segment; 221,321, minimum diameter plane; 222,322, the conical surface; 223,323, plane of greatest diameter; 230,330, free form surface part; 231,331, circular flat; 232,332, free form surface; 233,333, reflectance coating; 20, optical fiber; 30, fusing point protection structure.
[embodiment]
Below in conjunction with the utility model the drawings and specific embodiments the utility model optical fiber collimator and preparation method thereof is further described in detail.
Embodiment 1: please refer to accompanying drawing 1, this there is shown the mould of Idiotype lens.The method for making of described optical fiber collimator at first needs to be the die sinking of Idiotype lens, the mould 100 that making can Foundry Production Idiotype lens; This mould 100 has die cavity, and this die cavity comprises cylinder units 110, circular cone unit 120 and free form surface unit 130, is combined into the injection moulding die cavity that holds the complete entity of Idiotype lens by these three parts.
This cylinder units 110 comprises the first plane 111, the second plane 113 and a curved surface 112, and curved surface 113 connects the first plane 111 and the second plane 112.And this circular cone unit 120 comprises plane of greatest diameter 123, minimum diameter plane 121 and be connected the conical surface 122 on plane of greatest diameter 123 and minimum diameter plane 121, and plane of greatest diameter 123 and minimum diameter plane 121 are the circular flat of vertical conical central axis.And this free form surface unit 130 comprises a circular flat 131 and the free form surface 132 that is formed at this circular flat 131.Circular cone unit 120 is connected the first plane 111 of cylinder units 110 with its plane of greatest diameter 123.In this embodiment, the equal diameters of the maximum gauge of circular cone unit 120 and cylinder units 110 produces justified margin so two planes are affixed without step surface.Circular flat 131 diameters of free form surface unit 130 and the equal diameters of cylinder units 110, free form surface unit 130 are connected the second plane 113 of cylinder units 110 with its circular flat 131.
More than consisted of the mould of Idiotype lens, by Mold Making Idiotype lens 200.Pour into silica flour to the die cavity of this mould 100, and cast out Idiotype lens 200 through high-temperature fusion, these Idiotype lens 200 comprise that column part 210, tapered segment 220 and free form surface part 230 form; End face plating reflectance coating 233 in the free form surface part 230 of Idiotype lens 200; At the tapered segment 220 of Idiotype lens 200, its minimum diameter and optical fiber 20 equal diameters are bonded in optical fiber 20 end faces on the minimum diameter plane of Idiotype lens tapered segment 210 by the high temperature melting connection technology; Bonding point increases fusing point protection structure 30.
Described fusing point protection structure 30 is to be centered around bonding point optics construction bonds glue on every side.
Described high temperature melting connection technology refers to laser or arc welding technology.
Described free form surface refers to convex-concave sphere, convex-concave aspheric surface and arcwall face.
The special plane that is deformed into of described free form surface.
A kind of optical fiber collimator of making by the way, described optical fiber collimator comprises Idiotype lens 200, optical fiber 20 and is bonded in optical fiber 20 and optics construction bonds glue, described Idiotype lens 200 are welded together with optical fibre high temp, and described optics uses the construction bonds glue bond around the fusion point of optical fiber 20 and Idiotype lens 200; Described Idiotype lens 200 comprise tapered segment 220, column part 210 and free form surface part 230, and this column part 210 comprises the first plane 211, the second plane 213 and a curved surface 212, and curved surface 212 connects the first plane 211 and the second plane 213; And this tapered segment 220 comprises plane of greatest diameter 223, minimum diameter plane 221 and be connected plane of greatest diameter and the conical surface 222 on minimum diameter plane, and plane of greatest diameter 223 and minimum diameter plane 221 are the circular flat of vertical conical central axis; And this free form surface part 230 comprises a circular flat 231 and the free form surface 232 that is formed at this circular flat 231; The equal diameters of the maximum gauge of this tapered segment 220 and column part 210, tapered segment 220 are connected the first plane 211 of column part 210 with its plane of greatest diameter; Circular flat 231 diameters of free form surface part 230 and the equal diameters of column part 210, free form surface part 230 is connected the second plane 213 of column part 210 with its circular flat 231, the diameter on tapered segment 220 minimum diameter planes 221 and optical fiber 20 equal diameters, described Idiotype lens 200 are welded together with optical fiber 20 end faces with its tapered segment minimum diameter plane 221.
Described free form surface refers to convex-concave sphere, convex-concave aspheric surface and arcwall face.
Described free form surface can specially be deformed into the plane.
Be coated with reflectance coating 233 at described free form surface 232.
Described optical fiber 20 is consistent with the material of described Idiotype lens 200.
Embodiment 2:
The above, it only is the utility model preferred embodiment, be not that the utility model is done any pro forma restriction, although the utility model discloses as above with preferred embodiment, yet be not to limit the utility model, any those skilled in the art, within not breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be not break away from the technical solutions of the utility model content, refer to any simple modification that above embodiment is done according to the utility model technology, equivalent variations and modification all belong in the scope of technical solutions of the utility model.
Claims (6)
1. optical fiber collimator, it is characterized in that, described optical fiber collimator comprises Idiotype lens, optical fiber and optics construction bonds glue, and described Idiotype lens and optical fibre high temp are welded together, and described optics uses the construction bonds glue bond around the fusion point of optical fiber and Idiotype lens; Described Idiotype lens comprise tapered segment, column part and free form surface part, and this column part comprises the first plane, the second plane and a curved surface, and curved surface connects the first plane and the second plane; And this tapered segment comprises plane of greatest diameter, minimum diameter plane and be connected plane of greatest diameter and the conical surface on minimum diameter plane, and plane of greatest diameter and minimum diameter plane are the circular flat of vertical conical central axis; And this free form surface partly comprises a circular flat and the free form surface that is formed at this circular flat; Tapered segment is connected the first plane of column part with its plane of greatest diameter; The circular flat diameter of free form surface part and the equal diameters of column part, the free form surface part is connected the second plane of column part with its circular flat, the diameter on tapered segment minimum diameter plane equates with fibre diameter, described Idiotype lens are welded together with its tapered segment minimum diameter plane and fiber end face, are coated with reflectance coating at described free form surface.
2. described optical fiber collimator according to claim 1 is characterized in that the maximum gauge of described tapered segment and the equal diameters of column part.
3. described optical fiber collimator according to claim 1 is characterized in that the maximum gauge of described tapered segment is less than the diameter of column part.
4. described optical fiber collimator according to claim 1 is characterized in that described free form surface refers to convex-concave sphere, convex-concave aspheric surface and arcwall face.
5. the method for making of described optical fiber collimator according to claim 4 is characterized in that the special plane that is deformed into of described free form surface.
6. described optical fiber collimator according to claim 1 is characterized in that described optical fiber is consistent with the material of Idiotype lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202964924U CN203259687U (en) | 2013-05-23 | 2013-05-23 | Optical fiber collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013202964924U CN203259687U (en) | 2013-05-23 | 2013-05-23 | Optical fiber collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203259687U true CN203259687U (en) | 2013-10-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013202964924U Withdrawn - After Issue CN203259687U (en) | 2013-05-23 | 2013-05-23 | Optical fiber collimator |
Country Status (1)
| Country | Link |
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| CN (1) | CN203259687U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246020A (en) * | 2013-05-23 | 2013-08-14 | 深圳市天阳谷科技发展有限公司 | Optical fiber collimator and production method thereof |
| CN103926656A (en) * | 2014-04-21 | 2014-07-16 | 深圳市天阳谷科技发展有限公司 | Optical fiber collimator |
-
2013
- 2013-05-23 CN CN2013202964924U patent/CN203259687U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103246020A (en) * | 2013-05-23 | 2013-08-14 | 深圳市天阳谷科技发展有限公司 | Optical fiber collimator and production method thereof |
| CN103246020B (en) * | 2013-05-23 | 2015-07-08 | 深圳市天阳谷科技发展有限公司 | Optical fiber collimator and production method thereof |
| CN103926656A (en) * | 2014-04-21 | 2014-07-16 | 深圳市天阳谷科技发展有限公司 | Optical fiber collimator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20131030 Effective date of abandoning: 20150708 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20131030 Effective date of abandoning: 20150708 |
|
| RGAV | Abandon patent right to avoid regrant |