CN107037540A - A kind of small-sized polarization maintaining optical fibre focalizer - Google Patents
A kind of small-sized polarization maintaining optical fibre focalizer Download PDFInfo
- Publication number
- CN107037540A CN107037540A CN201710254107.2A CN201710254107A CN107037540A CN 107037540 A CN107037540 A CN 107037540A CN 201710254107 A CN201710254107 A CN 201710254107A CN 107037540 A CN107037540 A CN 107037540A
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- China
- Prior art keywords
- lens
- optical fiber
- wave plate
- sleeve pipe
- focalizer
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/32—Optical coupling means having lens focusing means positioned between opposed fibre ends
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
- G02B6/24—Coupling light guides
- G02B6/26—Optical coupling means
- G02B6/27—Optical coupling means with polarisation selective and adjusting means
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Optical Couplings Of Light Guides (AREA)
Abstract
The present invention discloses a kind of small-sized polarization maintaining optical fibre focalizer, including the optical fiber pigtail in sleeve pipe and light output end plug-in-sleeve, the first lens, 1/2 wave plate and the second lens are sequentially provided with sleeve pipe, the optical input surface of first lens is relative with the light output end of optical fiber pigtail, the optical input surface of second lens is relative with 1/2 wave plate, it is not attached between optical fiber pigtail, the first lens, 1/2 wave plate and the second lens and provided with centre-to-centre spacing, the polarization direction of the output light of the second lens is consistent with the angle of 1/2 wave plate.The structure construction of the present invention is ingenious, has flexibly used 1/2 wave plate, makes the just stable polarised light finally come out from the second lens, so as to realize the polarised light for making optical fiber output stable.Compared with prior art, the present invention is not only functionally more excellent, while have focusing and polarization-maintaining function concurrently, and structure design is simpler, be more easily manufactured, cost is lower, realizes the miniaturization of optical fiber focalizer.
Description
Technical field
The present invention relates to technical field of optical fiber, more particularly to a kind of it can make the small-sized polarization-maintaining light of the stable polarized light of optical fiber output
Fine focalizer.
Background technology
With the application of fiber optic communication, Fibre Optical Sensor in telecommunications, Aero-Space, navigation, industry manufacture field increasingly
Generally, the demand of the various optical devices to optical fiber telecommunications system, optical fiber sensing system is thereby increased.In specific demand,
Not only the quantity demand of sun adjuster part increasingly increases, while also wanting in terms of the species of sun adjuster part, performance, volume, cost
Ask and also improve constantly.
Optical fiber used in we are daily, is not a focal beam spot in diffusion light beam because its light guide exit face is big, so
Need, by the hot spot focusing of optical fiber, the output beam of optical fiber to be controlled in a micron-sized region in practical application.Again
Person, in actual applications, optical fiber, so as to produce birefringent phenomenon, can cause light because being become asymmetric by mechanical stress
Polarization state can have no regularly to change when transmitting in a fiber so that the unstable polarised light of optical fiber output.
Existing optical fiber focalizer can only focus on the hot spot of optical fiber, and can not make the stable polarised light of optical fiber output, and
The subject matter that optical fiber transmission is present can not be fully solved.And the manufacturing cost of existing optical fiber focalizer is all very high, structure
Design is complicated, and build is larger, inconvenient for use, can not meet miniaturization now, the market development requirement of low cost.
The content of the invention
It is an object of the invention to solve shortcoming and defect present in above-mentioned prior art there is provided one kind optical fiber can be made defeated
Go out the small-sized polarization maintaining optical fibre focalizer of stable polarized light.The structure simple structure of the polarization maintaining optical fibre focalizer, selection is easy to get, and 1/2
The ingenious cooperation of wave plate and remaining part, enables optical fiber to export stable polarised light.Compared with existing optical fiber focalizer, this hair
It is bright not only functionally more excellent, while have focusing function and polarization-maintaining function concurrently, and also cost is lower, be more easily manufactured, and realizes
It is the miniaturization of optical fiber focalizer, easy to use, it can meet the market demand now.
The technical solution adopted for the present invention to solve the technical problems is：A kind of small-sized polarization maintaining optical fibre focalizer, including set
It is saturating that the first lens, 1/2 wave plate and second are sequentially provided with optical fiber pigtail in pipe and light output end plug-in-sleeve, described sleeve pipe
Mirror, the optical input surface of the first lens is relative with the light output end of optical fiber pigtail, the optical input surface of the second lens and 1/2 wave plate phase
It is right, it is not attached between optical fiber pigtail, the first lens, 1/2 wave plate and the second lens and provided with centre-to-centre spacing, the second lens
The polarization direction of output light is consistent with the angle of 1/2 wave plate.（Those skilled in the art should appreciate that optical fiber pigtail as optical fiber
Tail optical fiber）
Further, the optical input surface of second lens is curved surface, and the light output end of the second lens is exposed to outside sleeve pipe.
Further, the light output end of the optical fiber pigtail is inserted in sleeve pipe by capillary fixation, the other end extends
To outside sleeve pipe.
Further, face relative between the capillary and the first lens is parallel to each other.
Further, the capillary, the first lens, 1/2 wave plate and the second lens realize that fixation is set by glue
It is placed in sleeve pipe.In this way, can avoid damaging part, and the good fixing effect of glue, cost is low, easily operation.
Further, the external diameter of described sleeve pipe is 3.5 ~ 4mm, and length is 17 ~ 18mm.
The manufacture method of small-sized polarization maintaining optical fibre focalizer of the present invention is：
1. the first lens are placed in into blend compounds water in sleeve pipe to be fixed；
2. the optical input surface phase for the light output end of optical fiber pigtail being placed in sleeve pipe and making it with the first lens by capillary
It is right；Then the centre-to-centre spacing between optical fiber pigtail and the first lens is calibrated, untill the hot spot collimation that optical fiber pigtail is exported；
Finally capillary is fixed with glue, the light output end of optical fiber pigtail is fixed in sleeve pipe with realizing；
3. 1/2 wave plate is placed in sleeve pipe and makes it relative with the light gasing surface of the first lens；Then the angle of 1/2 wave plate is adjusted
Degree, makes the angle of 1/2 wave plate identical with the polarization angle of optical fiber pigtail, so that the output light of 1/2 wave plate reaches maximum,
Finally 1/2 wave plate is fixed with glue；
4. the second lens are placed in sleeve pipe, and make the optical input surface of the second lens relative with 1/2 wave plate；Then adjustment second is saturating
The position of mirror, makes to keep appropriate centre-to-centre spacing between the second lens and 1/2 wave plate, and be exposed to the light output end of the second lens
About 0.8mm outside sleeve pipe, is finally fixed the second lens with glue, completes manufacture.
Beneficial effects of the present invention are：The structure construction of the polarization maintaining optical fibre focalizer of the present invention is ingenious, neatly uses
1/2 wave plate, under the fiting effect of optical fiber pigtail, the first lens, 1/2 wave plate and the second lens, is realized final from second
The just stable polarised light that lens come out, it is achieved thereby that making the stable polarised light of optical fiber output.Compared with prior art, originally
Invention is not only functionally more excellent, while have focusing function and polarization-maintaining function concurrently, and also structure design is simpler, be easier to make
Make, cost it is lower, while also achieving the miniaturization of optical fiber focalizer, using more convenient, market need now can be met
Ask, it is easy to promoted.
Brief description of the drawings
Fig. 1 is a kind of longitudinal section sectional view of small-sized polarization maintaining optical fibre focalizer of the embodiment of the present invention 1.
In figure, sleeve pipe 1, optical fiber pigtail 2, the first lens 3,1/2 wave plate 4, the second lens 5, capillary 6, glue 7.
Embodiment
Embodiment 1
A kind of small-sized polarization maintaining optical fibre focalizer described by the present embodiment 1, as shown in figure 1, being inserted including sleeve pipe 1 and light output end
The first lens 3,1/2 wave plate 4 and the second lens 5 are sequentially provided with optical fiber pigtail 2 in sleeve pipe, the sleeve pipe, the first lens
Optical input surface is relative with the light output end of optical fiber pigtail, and the optical input surface of the second lens is relative with 1/2 wave plate, optical fiber pigtail
Be not attached between bar, the first lens, 1/2 wave plate and the second lens and provided with centre-to-centre spacing, the output light of the second lens it is inclined
The direction that shakes is consistent with the angle of 1/2 wave plate.
In the present embodiment, the optical input surface of the second lens is curved surface, and the light output end of the second lens is exposed to outside sleeve pipe.
In the present embodiment, the light output end of optical fiber pigtail is by the fixation of capillary 6 is inserted in sleeve pipe, the other end is extended to
Outside sleeve pipe.
In the present embodiment, relative face is parallel to each other between capillary and the first lens.
In the present embodiment, capillary, the first lens, 1/2 wave plate and the second lens are fixedly installed by glue 7 to realize
In in sleeve pipe.In this way, can avoid damaging part, and the good fixing effect of glue, cost is low, easily operation.
In the present embodiment, the external diameter of sleeve pipe is 3.85mm, and length is 17.50mm.
The manufacture method of the small-sized polarization maintaining optical fibre focalizer of the present embodiment is：
1. the first lens are placed in into blend compounds water in sleeve pipe to be fixed；
2. the optical input surface phase for the light output end of optical fiber pigtail being placed in sleeve pipe and making it with the first lens by capillary
It is right；Then the centre-to-centre spacing between optical fiber pigtail and the first lens is calibrated, untill the hot spot collimation that optical fiber pigtail is exported；
Finally capillary is fixed with glue, the light output end of optical fiber pigtail is fixed in sleeve pipe with realizing；
3. 1/2 wave plate is placed in sleeve pipe and makes it relative with the light gasing surface of the first lens；Then the angle of 1/2 wave plate is adjusted
Degree, makes the angle of 1/2 wave plate identical with the polarization angle of optical fiber pigtail, so that the output light of 1/2 wave plate reaches maximum,
Finally 1/2 wave plate is fixed with glue；
4. the second lens are placed in sleeve pipe, and make the optical input surface of the second lens relative with 1/2 wave plate；Then adjustment second is saturating
The position of mirror, makes to keep appropriate centre-to-centre spacing between the second lens and 1/2 wave plate, and be exposed to the light output end of the second lens
About 0.8mm outside sleeve pipe, is finally fixed the second lens with glue, completes manufacture.
The above described is only a preferred embodiment of the present invention, not making any form to the technology contents of the present invention
On limitation.Every any simple modification made according to technical spirit of the invention to above example, equivalent variations are with repairing
Decorations, in the range of still falling within technical scheme.
Claims (6)
1. a kind of small-sized polarization maintaining optical fibre focalizer, it is characterised in that：Including sleeve pipe（1）And the optical fiber in light output end plug-in-sleeve
Pigtail（2）, the first lens are sequentially provided with described sleeve pipe（3）, 1/2 wave plate（4）And second lens（5）, the light of the first lens
Input face is relative with the light output end of optical fiber pigtail, and the optical input surface of the second lens is relative with 1/2 wave plate, optical fiber pigtail,
It is not attached between first lens, 1/2 wave plate and the second lens and provided with centre-to-centre spacing, the polarization side of the output light of the second lens
To consistent with the angle of 1/2 wave plate.
2. a kind of small-sized polarization maintaining optical fibre focalizer according to claim 1, it is characterised in that：The light of second lens is defeated
Enter face for curved surface, the light output end of the second lens is exposed to outside sleeve pipe.
3. a kind of small-sized polarization maintaining optical fibre focalizer according to claim 2, it is characterised in that：The light of the optical fiber pigtail
Output end is by capillary（6）Fixation is inserted in sleeve pipe, the other end is extended to outside sleeve pipe.
4. a kind of small-sized polarization maintaining optical fibre focalizer according to claim 3, it is characterised in that：The capillary and first saturating
Relative face is parallel to each other between mirror.
5. a kind of small-sized polarization maintaining optical fibre focalizer according to claim 2, it is characterised in that：It is the capillary, first saturating
Mirror, 1/2 wave plate and the second lens pass through glue（7）It is fixedly installed on to realize in sleeve pipe.
6. a kind of small-sized polarization maintaining optical fibre focalizer according to claim 1, it is characterised in that：The external diameter of described sleeve pipe is
3.5 ~ 4mm, length is 17 ~ 18mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710254107.2A CN107037540A (en) | 2017-04-18 | 2017-04-18 | A kind of small-sized polarization maintaining optical fibre focalizer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710254107.2A CN107037540A (en) | 2017-04-18 | 2017-04-18 | A kind of small-sized polarization maintaining optical fibre focalizer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107037540A true CN107037540A (en) | 2017-08-11 |
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ID=59536135
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710254107.2A Pending CN107037540A (en) | 2017-04-18 | 2017-04-18 | A kind of small-sized polarization maintaining optical fibre focalizer |
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| Country | Link |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409141A (en) * | 2001-09-17 | 2003-04-09 | Jds尤尼费斯（深圳）有限公司 | Wavelength division multiplexing coupler |
| CN201017130Y (en) * | 2006-06-05 | 2008-02-06 | 上海未来宽带技术及应用工程研究中心有限公司 | Full glass bushing light isolator |
| CN201051160Y (en) * | 2007-03-19 | 2008-04-23 | 福州高意通讯有限公司 | A polarization calibrator with high polarization output |
| CN102565496A (en) * | 2011-11-23 | 2012-07-11 | 哈尔滨工业大学 | Two-way transmission optical current sensor |
| CN103376510A (en) * | 2012-04-24 | 2013-10-30 | 光越科技(深圳)有限公司 | Polarization-maintaining coupler |
| US8873909B1 (en) * | 2012-04-23 | 2014-10-28 | Alliance Fiber Optic Products, Inc. | Micro-optic filtering devices and method of making the same |
-
2017
- 2017-04-18 CN CN201710254107.2A patent/CN107037540A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1409141A (en) * | 2001-09-17 | 2003-04-09 | Jds尤尼费斯（深圳）有限公司 | Wavelength division multiplexing coupler |
| CN201017130Y (en) * | 2006-06-05 | 2008-02-06 | 上海未来宽带技术及应用工程研究中心有限公司 | Full glass bushing light isolator |
| CN201051160Y (en) * | 2007-03-19 | 2008-04-23 | 福州高意通讯有限公司 | A polarization calibrator with high polarization output |
| CN102565496A (en) * | 2011-11-23 | 2012-07-11 | 哈尔滨工业大学 | Two-way transmission optical current sensor |
| US8873909B1 (en) * | 2012-04-23 | 2014-10-28 | Alliance Fiber Optic Products, Inc. | Micro-optic filtering devices and method of making the same |
| CN103376510A (en) * | 2012-04-24 | 2013-10-30 | 光越科技(深圳)有限公司 | Polarization-maintaining coupler |
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Application publication date: 20170811 |
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