CN203870286U - Optical fiber collimator - Google Patents
Optical fiber collimator Download PDFInfo
- Publication number
- CN203870286U CN203870286U CN201420193427.3U CN201420193427U CN203870286U CN 203870286 U CN203870286 U CN 203870286U CN 201420193427 U CN201420193427 U CN 201420193427U CN 203870286 U CN203870286 U CN 203870286U
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- CN
- China
- Prior art keywords
- optical fiber
- free form
- form surface
- grin lens
- fiber collimator
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
The utility model discloses an optical fiber collimator which comprises at least one optical fiber and free curved surface self-focusing lenses of which the number corresponds with the number of the optical fibers. Each optical fiber comprises a coating layer and a fiber core. One end of the fiber core is bared from the coating layer. Each free curved surface self-focusing lens comprises a cuboid part and a free curved surface part. The bared optical core is inserted into the inner part of the cuboid part from a surface which opposes the surface of the free curved surface part. The bared optical fiber is closely integrated with the cuboid part. The total length of the bared fiber core is larger than the length of the optical fiber part which is inserted into the cuboid part. The optical axis of a free curved surface self-focusing lens is coaxial with the corresponding optical fiber. The optical fiber collimator has advantage of simple structure, easy assembling, low insertion loss, and small element size. The optical fiber and the lens are integrated and can be used singly or in an array manner. The optical fiber collimator further has advantages of high stability, high reliability, small volume, small weight, etc. The dimension of the optical fiber collimator can be minimized.
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 the light that this optical fiber collimator emits optical fiber collimates.
Background technology
Optical fiber is fibre-optic writing a Chinese character in simplified form, and is a kind of light conduction instrument that utilizes the total reflection principle of light in the fiber that glass or plastics are made and reach, and is widely used in the every field such as communication.According to the transmission mode quantitative classification in optical fiber, optical fiber can be divided into multimode optical fiber and single-mode fiber again.Multimode optical fiber can adopt step-refraction index to distribute, and also can adopt graded index to distribute; Single-mode fiber adopts step-refraction index to distribute more.Therefore, existing optical fiber can be divided into three kinds of multimode step index optical fiber, multimode graded index fiber and single mode step index optical fibers.
Yet single-mode fiber is typical step index fiber, only dispersing of single-mode fiber, is unfavorable for being coupled on other device, and coupling efficiency is low; And single-mode fiber is when receiving the optical fiber of light, the absorptivity of light is not high, and coupling efficiency is also low; At present, optical fiber is widely used in the every field such as communication, and the data volume that relies on its transmission is also very huge; And in the experiments such as silicon optics, be often difficult to optical fiber align to slab guide.
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 the coupling efficiency between optical fiber and optical fiber or optical fiber and device, reduce insertion loss.Optical fiber collimator is one of basic device building on light communication system and network, continuous progress along with optical fiber communication technology, the manufacture of optical fiber collimator towards reduce structure complexity, reduced volume, reduce costs future development, continuous in enormous quantities and integrated production.
Therefore, be necessary to provide a kind of simple in structure, volume is small, cost is low, can effectively improve the optical fiber collimator of coupling efficiency and coupling operating distance.
Summary of the invention
For solving existing problem in above-mentioned prior art, the utility model provides that a kind of optical element is few, size is little, assembling process is simple, optical fiber collimator that can be at utmost integrated.
The utility model adopts following technical scheme to realize: a kind of optical fiber collimator, comprise at least one optical fiber and with the free form surface GRIN Lens of optical fiber respective amount, described optical fiber comprises overlay and fibre core, one end of described fibre core is exposed outside described overlay, described free form surface GRIN Lens comprises rectangular parallelepiped part and free form surface part, described free form surface is partly arranged on the center on described rectangular parallelepiped part minimal face, exposed fibre core is inserted into described rectangular parallelepiped partial interior from the opposite of described free form surface part one side, closely be connected as a whole with described rectangular parallelepiped part, the total length of described exposed fibre core is greater than it and is inserted in the length in described rectangular parallelepiped part, the optical axis of described free form surface GRIN Lens is concentric with described optical fiber.
Preferably, the quantity of described optical fiber is many, and described free form surface GRIN Lens is a plurality of, and a plurality of described free form surface GRIN Lens are pressed array arrangement and as a whole.
Preferably, described free form surface is partly plane, convex-concave sphere, convex-concave aspheric surface or arcwall face.
Preferably, the slightly about described free form surface part of described rectangular parallelepiped part minimal face.
Preferably, the intersection of described optical fiber and described free form surface GRIN Lens scribbles optics protection glue around.
Preferably, in described free form surface part, be coated with reflectance coating.
Preferably, described optical fiber is any one in glass optical fiber, silica fibre or plastic optical fiber.
Preferably, the material of described free form surface GRIN Lens is any one in optics moulded glass, quartz or optical plastic.
Compared with prior art, the utlity model has following beneficial effect: the utility model is simple in structure, easily assembling, there is low insertion loss and can make element microminiaturized, by optical fiber and lens, the two is combined as a whole, can be single or array use, coupling efficiency and coupling operating distance have effectively been improved, it is poor that spherical lens can reduce spherical imaging, increase acceptance angle, further improve coupling efficiency, there is focal length long, the feature that optically-coupled rate is high, high stability, high reliability, the features such as volume is little and lightweight, can make collimator size be miniaturized into minimum, parts are simplified, assembling process simple, cost saves manpower and time, optical fiber can be consistent with lens material, and the dielectric layer that light passes through is minimum, and return loss is near minimum.
Accompanying drawing explanation
Fig. 1 is the front view of a kind of optical fiber collimator embodiment 1 of the utility model;
Fig. 2 is the vertical view of a kind of optical fiber collimator embodiment 1 of the utility model;
Fig. 3 is the front view of a kind of optical fiber collimator embodiment 2 of the utility model;
Fig. 4 is the vertical view of a kind of optical fiber collimator embodiment 2 of the utility model;
Fig. 5 is the front view of the single optical fiber collimator after a kind of optical fiber collimator of the utility model is cut apart.
Embodiment
Below in conjunction with accompanying drawing, embodiment of the present utility model and embodiment are described in detail, described specific embodiment only, in order to explain the utility model, is not intended to limit embodiment of the present utility model.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 5, the utility model proposes a kind of optical fiber collimator, comprise 81 optical fiber 1 and 81 free form surface GRIN Lens 2, described optical fiber 1 adopts silica fibre, the material of described free form surface GRIN Lens 2 adopts optics moulded glass, and 81 described free form surface GRIN Lens 2 are by 9 * 9 array arrangements and as a whole, described optical fiber 1 comprises overlay 12 and fibre core 14, and one end of described fibre core 14 is exposed outside described overlay 12, described free form surface GRIN Lens 2 comprises rectangular parallelepiped part 22 and free form surface part 24, described free form surface part 24 is protruding sphere, described free form surface part 24 is arranged on the center on described rectangular parallelepiped part 22 minimal faces, in described free form surface part 24, be coated with reflectance coating, described rectangular parallelepiped part 22 minimal faces are slightly larger than described free form surface part 24, exposed fibre core 14 is inserted into described rectangular parallelepiped part 22 inside from the opposite of described free form surface part 24 one sides, by described free form surface GRIN Lens 2, tightly pushed, closely be connected as a whole with described rectangular parallelepiped part 22, the total length of described exposed fibre core 14 is greater than it and is inserted in the length in described rectangular parallelepiped part 22, described optical fiber 1 scribbles optics protection glue around with described free form surface GRIN Lens 2 intersections, the optical axis of described free form surface GRIN Lens 2 is concentric with described optical fiber 1, described optical fiber collimator can wholely be used, and also can be divided into single optical fiber collimator through cutting and use.
Embodiment 2
As shown in Fig. 3, Fig. 4, Fig. 5, the utility model proposes a kind of optical fiber collimator, comprise 21 optical fiber 1 and 21 free form surface GRIN Lens 2, described optical fiber 1 adopts glass optical fiber, the material of described free form surface GRIN Lens 2 adopts optical plastic, and 21 described free form surface GRIN Lens 2 are by 7 * 3 array arrangements and as a whole, described optical fiber 1 comprises overlay 12 and fibre core 14, and one end of described fibre core 14 is exposed outside described overlay 12, described free form surface GRIN Lens 2 comprises rectangular parallelepiped part 22 and free form surface part 24, described free form surface part 24 is arcwall face, described free form surface part 24 is arranged on the center on described rectangular parallelepiped part 22 minimal faces, in described free form surface part 24, be coated with reflectance coating, described rectangular parallelepiped part 22 minimal faces are slightly larger than described free form surface part 24, exposed fibre core 14 is inserted into described rectangular parallelepiped part 22 inside from the opposite of described free form surface part 24 one sides, by described free form surface GRIN Lens 2, tightly pushed, closely be connected as a whole with described rectangular parallelepiped part 22, the total length of described exposed fibre core 14 is greater than it and is inserted in the length in described rectangular parallelepiped part 22, described optical fiber 1 scribbles optics protection glue around with described free form surface GRIN Lens 2 intersections, the optical axis of described free form surface GRIN Lens 2 is concentric with described optical fiber 1, described optical fiber collimator can wholely be used, and also can be divided into single optical fiber collimator through cutting and use.
The foregoing is only preferred embodiment of the present utility model; not in order to limit the utility model; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses, the variation that can expect easily or replacement, all should be encompassed in protection domain of the present utility model in.Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claim was defined.
Claims (8)
1. an optical fiber collimator, it is characterized in that: comprise at least one optical fiber and with the free form surface GRIN Lens of optical fiber respective amount, described optical fiber comprises overlay and fibre core, one end of described fibre core is exposed outside described overlay, described free form surface GRIN Lens comprises rectangular parallelepiped part and free form surface part, described free form surface is partly arranged on the center on described rectangular parallelepiped part minimal face, exposed fibre core is inserted into described rectangular parallelepiped partial interior from the opposite of described free form surface part one side, closely be connected as a whole with described rectangular parallelepiped part, the total length of described exposed fibre core is greater than it and is inserted in the length in described rectangular parallelepiped part, the optical axis of described free form surface GRIN Lens is concentric with described optical fiber.
2. optical fiber collimator according to claim 1, is characterized in that: the quantity of described optical fiber is many, and described free form surface GRIN Lens is a plurality of, and a plurality of described free form surface GRIN Lens are pressed array arrangement and as a whole.
3. optical fiber collimator according to claim 1 and 2, is characterized in that: described free form surface is partly plane, convex-concave sphere, convex-concave aspheric surface or arcwall face.
4. optical fiber collimator according to claim 1 and 2, is characterized in that: the slightly about described free form surface part of described rectangular parallelepiped part minimal face.
5. optical fiber collimator according to claim 1 and 2, is characterized in that: the intersection of described optical fiber and described free form surface GRIN Lens scribbles optics protection glue around.
6. optical fiber collimator according to claim 1 and 2, is characterized in that: in described free form surface part, be coated with reflectance coating.
7. optical fiber collimator according to claim 1 and 2, is characterized in that: described optical fiber is any one in glass optical fiber, silica fibre or plastic optical fiber.
8. optical fiber collimator according to claim 1 and 2, is characterized in that: the material of described free form surface GRIN Lens is any one in optics moulded glass, quartz or optical plastic.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193427.3U CN203870286U (en) | 2014-04-21 | 2014-04-21 | Optical fiber collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420193427.3U CN203870286U (en) | 2014-04-21 | 2014-04-21 | Optical fiber collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203870286U true CN203870286U (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420193427.3U Expired - Fee Related CN203870286U (en) | 2014-04-21 | 2014-04-21 | Optical fiber collimator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203870286U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109814209A (en) * | 2019-03-21 | 2019-05-28 | 江苏光扬光电科技有限公司 | A kind of optical fiber collimator and its production technology |
-
2014
- 2014-04-21 CN CN201420193427.3U patent/CN203870286U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN109814209A (en) * | 2019-03-21 | 2019-05-28 | 江苏光扬光电科技有限公司 | A kind of optical fiber collimator and its production technology |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 |
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| CF01 | Termination of patent right due to non-payment of annual fee |