CN204758868U - Optical fiber collimator - Google Patents
Optical fiber collimator Download PDFInfo
- Publication number
- CN204758868U CN204758868U CN201520484218.9U CN201520484218U CN204758868U CN 204758868 U CN204758868 U CN 204758868U CN 201520484218 U CN201520484218 U CN 201520484218U CN 204758868 U CN204758868 U CN 204758868U
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- CN
- China
- Prior art keywords
- optical fiber
- ferrule
- fiber collimator
- hole
- grin lens
- Prior art date
- 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.)
- Expired - Fee Related
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- Optical Couplings Of Light Guides (AREA)
Abstract
The utility model relates to an optical device, concretely relates to optical fiber collimator. The utility model discloses an optical fiber collimator, including optic fibre, ferrule, self -focusing lens and outer sleeve pipe, the optic fibre outside is located to the fixed cover of ferrule, ferrule with self -focusing lens contacts, the ferrule and the self -focusing lens outside are located to the fixed cover of ferrule. Generally speaking, it is fixed through the viscose that above -mentioned fixed cover is established, and particularly, optic fibre passes through the viscose and bonds in ferrule, and ferrule and self -focusing lens contact, just arranges to be a straight line, and it is intraductal in the skin cover to bond through the viscose jointly. Certainly, also can pass through to combine other fixed modes, the mode of welding for example, particularly, optic fibre through the welding fixing in ferrule, ferrule then accessible viscose bonds intraductally in the skin cover. The utility model discloses be applied to the reliability and the precision that improve optical fiber collimator.
Description
Technical field
The utility model relates to a kind of optical device, is specifically related to a kind of optical fiber collimator.
Background technology
Because optical fiber has wideband, low-loss, not by characteristics such as electromagnetic interference influences, in optical transport field, particularly plays more and more important effect in optical communication field.And because light signal is after input optical fibre enters optical system; usually multiple optical effect can be carried out by intrasystem optical device; as filtering, modulation, partial wave and conjunction ripple etc.; export via one or more output optical fibre, due to input optical fibre and output optical fibre not same optical fiber, and the aperture of optical fiber is less than the aperture of optical device usually again; therefore; after adopting when transmitting optical fiber collimator that flashlight is collimated in input optical device, thus reduce insertion loss, there is very important meaning.
Optical fiber collimator is accurately located by tail optical fiber and GRIN Lens to form.Transmission light in optical fiber can be transformed into collimated light (directional light) by it, or parallel for the external world (less parallel) is optically coupled in single-mode fiber.
Existing optical fiber collimator, owing to there is gap between outer layer sleeve and ferrule, makes the reliability of existing optical fiber collimator and precision not high, affects the usability of fibre system.
Utility model content
Technical problem to be solved in the utility model is, provides the optical fiber collimator that a kind of good reliability, precision are high, by bonding by viscose glue between outer layer sleeve and ferrule, makes to there is not gap between them, to solve the deficiency of prior art.
In order to solve the problems of the technologies described above, the technical scheme that the utility model adopts is, a kind of optical fiber collimator, comprise optical fiber, ferrule, GRIN Lens and outer layer sleeve, described ferrule fixed cover is located at outer fiber, described ferrule and described GRIN Lens contact, and described ferrule fixed cover is located at outside ferrule and GRIN Lens.Wherein, described ferrule is cylindric, comprises both ends of the surface and the diameter through hole slightly larger than fibre diameter; One end face of described ferrule is plane, and described through hole forms a pyramidal structure near this end, and described optical fiber is immobilizated in this through hole.Further, described optical fiber is immobilizated in the through hole of this pyramidal structure by viscose glue (such as epoxide-resin glue or ultraviolet freezing plastic), can also be immobilizated in the through hole of this pyramidal structure by the mode of welding.
In general, above-mentioned fixing sheathed be fixed by viscose glue, specifically, optical fiber is adhered in ferrule by viscose glue, and ferrule and GRIN Lens contact, and is arranged as a straight line, is jointly adhered in outer layer sleeve by viscose glue.Certainly, also can by such as, in conjunction with other fixed forms, welding manner, specifically, optical fiber is immobilizated in ferrule by welding, and ferrule is then adhered in outer layer sleeve by viscose glue.
Described GRIN Lens is cylindric, and comprise the inclined end face that a pitch angle is 6 degree to 8 degree, its pitch value is about 0.23.Further, the surface of described GRIN Lens is coated with antireflective film.
Further, described outer layer sleeve adopts glass material to make.
Further, the inwall indentation of described through hole.
The utility model, by such scheme, by bonding by viscose glue between outer layer sleeve and ferrule, makes to there is not gap between them, thus improves reliability and the precision of optical fiber collimator, and then promotes the usability of fibre system.
Accompanying drawing explanation
Fig. 1 is the schematic cross-section of embodiment 1 of the present utility model;
Fig. 2 is the schematic cross-section of embodiment 2 of the present utility model.
Embodiment
Now with embodiment, the utility model is further illustrated by reference to the accompanying drawings.
embodiment 1
As a specific embodiment of the present utility model; as shown in Figure 1; a kind of optical fiber collimator of the present utility model; comprise optical fiber 101, ferrule 102, GRIN Lens 103 and outer layer sleeve 104; this ferrule 102 fixing protection optical fiber 101; and increase the diameter of optical fiber assembled part, be convenient to the relative positioning controlling optical fiber 101 tail end and GRIN Lens 103.
Ferrule 102, roughly in cylindric, comprises both ends of the surface and the diameter through hole 105 slightly larger than the diameter of optical fiber 101.Wherein, one end face of this ferrule 102 is planes, through hole 105 forms a pyramidal structure near this end, to facilitate the insertion of optical fiber 101, this optical fiber 101 is immobilizated in the through hole 105 of ferrule 102 by epoxy resin or ultraviolet freezing plastic or other viscose glues or welding manner, and tail end is concordant with dip plane 106.Ferrule 102 is made up, as ruby, quartz and sapphire of the material mating with optical fiber 101.
This GRIN Lens 103 is roughly in cylindric, and comprise the inclined end face 107 that a pitch angle is 6 degree to 8 degree, its pitch value is about 0.23, is used for collimating from the light beam of optical fiber 101 output or the light beam from other optical device input optical fibre 101.Further, the surface of this GRIN Lens 103 is coated with antireflective film.
This outer layer sleeve 104 adopts glass material to make, and roughly cylindrically, its diameter, slightly larger than the diameter of ferrule 102 and GRIN Lens 103, is used for suit fixing this ferrule 102 and this GRIN Lens 103.The inner side of this outer layer sleeve 104 is fixedly connected with the outside of ferrule 102.And the length of ferrule 102 is less than the length of outer layer sleeve 104.
During assembling, first ferrule 102 is inserted after optical fiber 101 tail end being smeared viscose glue, secondly bonding agent is adopted to be fixed in outer layer sleeve 104 by GRIN Lens 103, wherein, the inclined end face 107 of GRIN Lens 103 is placed in outer layer sleeve 104, other end part stretches out outside outer layer sleeve 104, outer layer sleeve 104 is inserted after again ferrule 102 being smeared viscose glue, and the inclined end face 107 of GRIN Lens 103 is closed in its dip plane 106, the two keeps suitable spacing, the relative positioning of adjustment itself and GRIN Lens 103, to guarantee that every optical fiber property of optical fiber collimator reaches best.Finally by baking-curing viscose glue with fixing ferrule 102 in outer layer sleeve 104.
This optical fiber collimator is used for collimating the light beam inputted from optical fiber 101, or the output beam of other optical device is collimated to optical fiber 101.
embodiment 2
In the present embodiment, the inwall indentation of the pyramidal structure of described through hole, after pouring into or smearing viscose glue, jagged structure can ensure firmly to connect between optical fiber and ferrule.The miscellaneous part of the present embodiment and installation method, with embodiment 1, repeat no more here.
By such scheme, optical fiber collimator of the present utility model has good practicality.
Although specifically show in conjunction with preferred embodiment and describe the utility model; but those skilled in the art should be understood that; not departing from the spirit and scope of the present utility model that appended claims limits; can make a variety of changes the utility model in the form and details, be protection domain of the present utility model.
Claims (8)
1. an optical fiber collimator, it is characterized in that: comprise optical fiber, ferrule, GRIN Lens and outer layer sleeve, described ferrule fixed cover is located at outer fiber, described ferrule and described GRIN Lens contact, and described ferrule fixed cover is located at outside ferrule and GRIN Lens;
Described ferrule is cylindric, comprises both ends of the surface and the diameter through hole slightly larger than fibre diameter; One end face of described ferrule is plane, and described through hole forms a pyramidal structure near this end, and described optical fiber is immobilizated in this through hole.
2. a kind of optical fiber collimator according to claim 1, is characterized in that: described optical fiber is immobilizated in this through hole by viscose glue.
3. a kind of optical fiber collimator according to claim 2, is characterized in that: described optical fiber is immobilizated in this through hole by epoxide-resin glue or ultraviolet freezing plastic.
4. a kind of optical fiber collimator according to claim 1, is characterized in that: described optical fiber is immobilizated in this through hole by welding.
5. a kind of optical fiber collimator according to claim 1, is characterized in that: described GRIN Lens is cylindric, comprises the inclined end face that a pitch angle is 6 degree to 8 degree.
6. a kind of optical fiber collimator according to claim 1 or 5, is characterized in that: the surface of described GRIN Lens is coated with antireflective film.
7. a kind of optical fiber collimator according to claim 1, is characterized in that: described outer layer sleeve is the outer layer sleeve that glass material is made.
8. a kind of optical fiber collimator according to claim 1, is characterized in that: the inwall indentation of described through hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484218.9U CN204758868U (en) | 2015-07-08 | 2015-07-08 | Optical fiber collimator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520484218.9U CN204758868U (en) | 2015-07-08 | 2015-07-08 | Optical fiber collimator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204758868U true CN204758868U (en) | 2015-11-11 |
Family
ID=54473562
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520484218.9U Expired - Fee Related CN204758868U (en) | 2015-07-08 | 2015-07-08 | Optical fiber collimator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204758868U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976745A (en) * | 2017-10-26 | 2018-05-01 | 成都聚芯光科通信设备有限责任公司 | The collimater and its adjusting fixing means of a kind of micro module |
-
2015
- 2015-07-08 CN CN201520484218.9U patent/CN204758868U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107976745A (en) * | 2017-10-26 | 2018-05-01 | 成都聚芯光科通信设备有限责任公司 | The collimater and its adjusting fixing means of a kind of micro module |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151111 Termination date: 20180708 |