CN109814205A - A kind of polarization beam apparatus - Google Patents
A kind of polarization beam apparatus Download PDFInfo
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- CN109814205A CN109814205A CN201910177659.7A CN201910177659A CN109814205A CN 109814205 A CN109814205 A CN 109814205A CN 201910177659 A CN201910177659 A CN 201910177659A CN 109814205 A CN109814205 A CN 109814205A
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- China
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- optical fiber
- lens
- birefringece crystal
- fiber head
- polarization beam
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Abstract
The present invention provides a kind of polarization beam apparatus, including the first optical fiber head, the first lens, the second lens, birefringece crystal and the second optical fiber head；First optical fiber head is made of an optical fiber and capillary or ceramic insertion core, the other side of first optical fiber head is arranged in the birefringece crystal, the other side of the birefringece crystal is arranged in first lens, the side of first lens is arranged in second lens, the other side of second lens is arranged in second optical fiber head of light, second optical fiber head is made of double optical fiber and twin-core capillary or ceramic insertion core, the present invention passes through above structure, no setting is required by way of birefringece crystal is arranged wollaston prism or PBS prism, solve the problems, such as that wollaston prism and PBS prism cost are excessively high and need using wollaston prism inefficient caused by accurate matching angle, simultaneously it is also possible that polarization beam apparatus more compact can more minimize, and since birefringece crystal can be achieved at the same time Bundle of rays and the function of beam splitting have widened applicable scene of the invention so the present invention can also realize bundling device function by switching the input and output direction of optical fiber.
Description
Technical field
The present invention relates to light sensing field, especially a kind of polarization beam apparatus.
Background technique
Polarization beam apparatus is a kind of polarizer common in Fiber Optical Communication System or optical sensing means, existing inclined
It shakes in beam splitter, as shown in Figures 1 and 2, optical signal is sent from an optical fiber one end using wollaston prism or PBS prism
It realizes polarization beam splitting, is finally received again by two polarization maintaining optical fibres；But since the beam splitter of prism-type needs to handle collimator light, because
This bigger optical path of its clear aperature is longer, causes the volume of beam splitter to increase manufacturing cost high, and wollaston prism makes
Complex process, relatively low Coupling power loss could be obtained by needing to carry out point-device angle automatching, and PBS prism then needs
Expensive filming equipment is wanted, leads to the cost of manufacture raising of polarization beam apparatus and volume is big.
Summary of the invention
The main purpose of the present invention is to provide a kind of guarantor's polarization beam apparatus, press while closing beam and beam splitting function realizing
Division beam body product, and the cost of manufacture of beam splitter is reduced, to reduce the production cost of beam splitter.
To achieve the above object, the technical scheme adopted by the invention is as follows:
A kind of polarization beam apparatus, including the first optical fiber head, the first lens, the second lens, birefringece crystal and the second light
Fine head；The side of first optical fiber head is arranged in the birefringece crystal, and first lens are arranged in the birefringent crystalline substance
The side of first lens is arranged in the side of body, second lens, and the second optical fiber head setting is saturating described second
The side of mirror.
Further, the structure of first optical fiber head be by optical fiber in conjunction with capillary or optical fiber is in conjunction with ceramic insertion core
One of.
Further, the structure of second optical fiber head be double optical fiber with twin-core capillary ining conjunction with or double optical fiber with it is pair ceramic
One of lock pin combination.
Further, first lens are collimation lens.
Further, second lens are plus lens.
Further, the birefringece crystal be YVO4 birefringece crystal, TiO2 birefringece crystal or other have it is two-fold
Penetrate one of the crystal of property.
The present invention using the above structure, Wollaston rib of realizing that no setting is required in such a way that YVO4 birefringece crystal is set
Mirror angle matching or PBS prism, solve wollaston prism and PBS prism cost are excessively high, production efficiency is low to lead to beam splitter
Production cost the problem of increasing, and since the function of bundle of rays and beam splitting, institute can be achieved at the same time in YVO4 birefringece crystal
Also beam splitter or bundling device function can be realized by switching the input and output direction of light with the present invention, widened of the invention
It is applicable in scene.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of one polarization beam apparatus in the prior art of the present invention；
Fig. 2 is the structural schematic diagram of another polarization beam apparatus in the prior art of the present invention；
Fig. 3 is a kind of structural schematic diagram of one embodiment of polarization beam apparatus of the present invention；
Fig. 4 is a kind of structural schematic diagram of the another embodiment of polarization beam combiner one of the invention；
Figure label title are as follows: the first optical fiber head of 10-, the first lens of 20-, the second lens of 30-, 40- birefringece crystal,
The second optical fiber head of 50-.
Specific embodiment
Specific embodiments of the present invention will be further explained with reference to the accompanying drawing.It should be noted that for
The explanation of these embodiments is used to help understand the present invention, but and does not constitute a limitation of the invention.In addition, disclosed below
The each embodiment of the present invention involved in technical characteristic can be combined with each other as long as they do not conflict with each other.
A kind of polarization beam apparatus, as shown in Figures 3 and 4, including the first optical fiber head 10, the first lens 20, the second lens 30,
Birefringece crystal 40 and the second optical fiber head 50；The side of the first optical fiber head 10, the first lens 20 are arranged in birefringece crystal 40
The side of birefringece crystal 40 is set, and the side of the first lens 20 is arranged in the second lens 30, and the setting of the second optical fiber head 50 exists
The side of second lens 30；
First optical fiber head 10 and the second optical fiber head 50 are for fixing external optical fiber, to stablize external optical fiber input and defeated
Signal optical source out；
Birefringece crystal 40 is used to the optical signal inputted from the first optical fiber head 10 being divided into mutually perpendicular two beam of polarization state
Optical signal is completed polarization signal and is spatially separating；
Birefringece crystal 40 can also adjust polarization signal sky by changing thickness and the optical axis angle of birefringece crystal 40
Between separating distance size；
First lens 20 are used to the isolated two-beam signal of birefringece crystal 40 carrying out intersection convergence, while by adjusting
The beam crosses angle of thickness and optical axis angle the adjustment two-beam signal of birefringece crystal 40 makes two-beam signal by second
It can be with the location matches of two optical fiber in the second optical fiber head 50 after lens 30；
Second lens 30 by the two-beam signal that the first lens 20 reflect for converging again and being sent to the second optical fiber head
50, realize beam splitting；
Second lens 30 are also used to carry out the two-beam signal that the second optical fiber head 50 inputs intersection convergence, while adjusting two
The beam crosses angle of beam optical signal make two-beam signal after the first lens 20 can and with the light in the first optical fiber head 10
Fine location matches；
First lens 20 are also used to again converge the two-beam signal that the second lens 30 reflect and are sent to birefringent crystalline substance
Body 40；
The two-beam signal set that birefringece crystal 40 is also used to reflect on the second lens 30 is sent at a branch of optical signal
To the first optical fiber head 10, realizes and close beam.
Further, the structure of the first optical fiber head 10 be optical fiber in conjunction with capillary or optical fiber in conjunction with ceramic insertion core in
It is a kind of.
Further, the structure of the second optical fiber head 50 is double optical fiber in conjunction with twin-core capillary or double optical fiber are inserted with double ceramics
One of core combination.
Further, the first lens 20 are collimation lens.
Further, the second lens 30 are plus lens.
Further, birefringece crystal 40 be YVO4 birefringece crystal, TiO2 birefringece crystal or other have it is birefringent
One of crystal of property.
In a concrete application scene of the invention, the optical fiber in the first optical fiber head 10 is as input optical fibre, the second optical fiber head
Two optical fiber in 50 are as output optical fibre；
When input optical fibre starts input optical signal, it is mutual that the input optical signal is divided into polarization state by birefringece crystal 40
Vertical two-beam signal is completed polarization signal and is spatially separating, two beams that the first lens 20 separate birefringece crystal 40 later
Input optical signal carries out intersection convergence, while thickness and optical axis angle adjustment two-beam signal by adjusting birefringece crystal 40
Beam crosses angle make two-beam signal after the second lens 30 can and the second optical fiber head 50 in two fiber positions
Input optical signal after beam splitting can be passed through two output optical fibre outputs by matching, the second last optical fiber head 50.
In conjunction with attached drawing, the embodiments of the present invention are described in detail above, but the present invention is not limited to described implementations
Mode.For a person skilled in the art, in the case where not departing from the principle of the invention and spirit, to these embodiments
A variety of change, modification, replacement and modification are carried out, are still fallen in protection scope of the present invention.
Claims (6)
1. a kind of polarization beam apparatus, including the first optical fiber head, the first lens, the second lens, birefringece crystal and the second optical fiber
Head；The side of first optical fiber head is arranged in the birefringece crystal, and first lens are arranged in the birefringece crystal
Side, second lens are arranged in the side of first lens, and second optical fiber head is arranged in second lens
Side.
2. a kind of polarization beam apparatus as described in claim 1, which is characterized in that the structure of first optical fiber head is by optical fiber
In conjunction with capillary or optical fiber is one of in conjunction with ceramic insertion core.
3. a kind of polarization beam apparatus as described in claim 1, which is characterized in that the structure of second optical fiber head is double optical fiber
In conjunction with twin-core capillary or double optical fiber are one of in conjunction with double ceramic insertion cores.
4. a kind of polarization beam apparatus as described in claim 1, which is characterized in that first lens are collimation lens.
5. a kind of polarization beam apparatus as described in claim 1, which is characterized in that second lens are plus lens.
6. the birefringece crystal be YVO4 birefringece crystal, TiO2 birefringece crystal or other have the crystal of birefringence
One of.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177659.7A CN109814205A (en) | 2019-03-09 | 2019-03-09 | A kind of polarization beam apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910177659.7A CN109814205A (en) | 2019-03-09 | 2019-03-09 | A kind of polarization beam apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109814205A true CN109814205A (en) | 2019-05-28 |
Family
ID=66608544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910177659.7A Pending CN109814205A (en) | 2019-03-09 | 2019-03-09 | A kind of polarization beam apparatus |
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| Country | Link |
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| CN (1) | CN109814205A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501780A (en) * | 2019-08-01 | 2019-11-26 | 武汉理工大学 | Controllable polarization beam splitter based on multicore coupling optical fiber and substrate switching effect |
| CN111443429A (en) * | 2020-03-27 | 2020-07-24 | 北京航空航天大学 | Thin film type optical fiber polarizing device |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2450678Y (en) * | 2000-11-03 | 2001-09-26 | 福建华科光电有限公司 | Polarizing buncher |
| CN1365011A (en) * | 2000-07-14 | 2002-08-21 | Jds尤尼费斯公司 | Beam splitter and beam combiner with isolated polarized beam |
| CN2798127Y (en) * | 2005-04-15 | 2006-07-19 | 北京航空航天大学 | Micro optical polarized beam splitting device |
| JP4115208B2 (en) * | 2002-09-09 | 2008-07-09 | 古河電気工業株式会社 | Optical multiplexing / demultiplexing module |
-
2019
- 2019-03-09 CN CN201910177659.7A patent/CN109814205A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1365011A (en) * | 2000-07-14 | 2002-08-21 | Jds尤尼费斯公司 | Beam splitter and beam combiner with isolated polarized beam |
| CN2450678Y (en) * | 2000-11-03 | 2001-09-26 | 福建华科光电有限公司 | Polarizing buncher |
| JP4115208B2 (en) * | 2002-09-09 | 2008-07-09 | 古河電気工業株式会社 | Optical multiplexing / demultiplexing module |
| CN2798127Y (en) * | 2005-04-15 | 2006-07-19 | 北京航空航天大学 | Micro optical polarized beam splitting device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110501780A (en) * | 2019-08-01 | 2019-11-26 | 武汉理工大学 | Controllable polarization beam splitter based on multicore coupling optical fiber and substrate switching effect |
| CN111443429A (en) * | 2020-03-27 | 2020-07-24 | 北京航空航天大学 | Thin film type optical fiber polarizing device |
| CN111443429B (en) * | 2020-03-27 | 2021-04-02 | 北京航空航天大学 | Thin film type optical fiber polarizing device |
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Application publication date: 20190528 |