CN207851406U - Simple fibre-optic polarization adjuster - Google Patents
Simple fibre-optic polarization adjuster Download PDFInfo
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- CN207851406U CN207851406U CN201820235744.5U CN201820235744U CN207851406U CN 207851406 U CN207851406 U CN 207851406U CN 201820235744 U CN201820235744 U CN 201820235744U CN 207851406 U CN207851406 U CN 207851406U
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- shaft
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- winding disk
- rubber ring
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Abstract
The utility model discloses a kind of simple fibre-optic polarization adjusters, including fiber winding disk, shaft and holder, it is characterised in that：The groove of Optical Fiber Winding is useful on the fiber winding disk, the notch of groove extends to the edge of fiber winding disk, via is set below fiber winding disk, shaft is arranged in the vias, shaft and fiber winding disk fixed with the screw being radially arranged along shaft to make fiber winding disk that can rotate with shaft, the both ends of shaft are set in holder, and shaft is located at the part in holder and is set with rubber ring, shaft, rubber ring and holder tight fit.The utility model is simple in structure, single mode optical fiber is placed in adjuster, the stress anisotropy in cross section of optic fibre is caused to be distributed using fibre-optical bending, due to photoelastic effect, fiber optic materials index distribution changes, to generate additional stress birfringence, cause the variation of guided wave polarization state, realizes the control to polarization state.
Description
Technical field
The utility model is related to optical fiber regulation technology fields, and in particular to a kind of fibre-optic polarization adjuster of winding-type.
Background technology
The direction of vibration of light is called polarization for the asymmetry of the direction of propagation, and polarization is that shear wave is different from other longitudinal waves
One most apparent mark, only shear wave just has polarization phenomena.In coherent fiber communication system, only when signal light field and local oscillator
When the polarization state of light field is consistent, it is highly sensitive just to obtain expected heterodyne reception.However due to single mode optical fiber birefringent characteristic,
Optical fiber output polarization state can change with various factors such as temperature, pressure and bendings, cause between signal light and local oscillator light partially
Polarization state mismatch, to influence receiver sensitivity.In addition, using coherent measurement system of the polarization maintaining optical fibre as sensor fibre
In, often require that one of the polarization direction of incident light and the birefringence main shaft of optical fiber overlap, to meet the needs measured, such as optical fiber
Gyro, measured using the distributed sensing of optical fiber refracting characteristic etc..Therefore, Polarization Control is coherent fiber communication system, and
A problem of crucial importance in other coherent measurement systems.It is to solve the problems, such as that this one is effective using optical fiber polarization controller
Technological means.
Utility model content
The technical problems to be solved in the utility model, which provides, makes simple, fibre-optic polarization adjuster easy to use.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：A kind of simple optical fiber polarisation adjusting
Device, including fiber winding disk, shaft and holder, it is characterised in that：The groove of Optical Fiber Winding is useful on the fiber winding disk, groove
Notch extends to the edge of fiber winding disk, and via is arranged below fiber winding disk, and shaft is arranged in the vias, with what is be radially arranged along shaft
Screw fixes shaft and fiber winding disk to make fiber winding disk that can be rotated with shaft, and the both ends of shaft are set in holder, and turns
Part of the axle position in holder is set with rubber ring, shaft, rubber ring and holder tight fit.
Further, further include a baffle, baffle, which is fixed in fine plate disc, to be wrapped in for fixation on fiber winding disk
Optical fiber.
Further, the holder with the corresponding position of rubber ring is provided with transverse concave groove, roller end and rubber
Circle setting is respectively positioned in transverse concave groove, shaft and rubber ring is fixed in transverse concave groove with the catch being vertically arranged, catch is solid
It is scheduled on holder.
Further, holder is stretched out in wherein one end of the shaft, and a handle is arranged for rotating in extension
Shaft.
Further, the holder includes horizontally disposed chassis and two columns being vertically arranged, fiber winding disk and
Baffle length and column tight fit, fiber winding disk and baffle are located between two columns.
From above-mentioned technical proposal it can be seen that the utility model has the following advantages：The utility model is simple in structure, will be single
Mode fiber is placed in adjuster, causes the stress anisotropy in cross section of optic fibre to be distributed using fibre-optical bending, due to photoelastic effect
It answers, fiber optic materials index distribution changes, and to generate additional stress birfringence, causes the variation of guided wave polarization state,
Realize the control to polarization state.The utility model is simple in structure, easy to operate, and optical fiber is easy to loading and unloading, and complete machine makes simple, cost
It is low.It can be applied in the system that coherent fiber communication, coherent measurement etc. need light polarization, because polarised light transmits in a fiber
Without Space Coupling, it can be achieved that debugging in real time.
Description of the drawings
Fig. 1 is the structure principle chart of the utility model；
Fig. 2 is the structural schematic diagram of the utility model.
Specific implementation mode
It elaborates to specific embodiment of the present utility model below in conjunction with attached drawing.
As shown in Fig. 1 (catch and baffle are not drawn into) and Fig. 2, the simple fibre-optic polarization adjuster of the utility model include around
Fine disk 1, shaft 7 and holder 9, the groove 2 of Optical Fiber Winding is useful on the fiber winding disk 1, and the notch of groove is extended to around fibre
The edge of disk.Via is arranged in 1 lower section of fiber winding disk, and shaft 7 is arranged in the vias to make fiber winding disk that can rotate around the axis, is turned with edge
The screw 8 that axis is radially arranged fixes shaft 7 and fiber winding disk 1, and the both ends of shaft 7 are set in holder 9, and shaft is located at holder
In part be set with rubber ring 5,9 tight fit of shaft 7, rubber ring 5 and holder, shaft 7 does not rotate when no outer force effect, outside
Power rotating shaft can rotate.
The utility model further includes a baffle 10, and 10 shape and size of baffle are matched with fiber winding disk, and baffle 10 is logical
Screw 11 is crossed to be fixed on fiber winding disk for the fixed optical fiber being wrapped on fiber winding disk.
The holder is provided with transverse concave groove with the corresponding position of rubber ring, and equal position is arranged in roller end and rubber ring
In lateral groove, shaft 7 and rubber ring 5 are fixed in transverse concave groove with the catch being vertically arranged, catch 12 passes through spiral shell
Silk 13 is fixed on holder.The holder 9 includes horizontally disposed chassis and two columns being vertically arranged, fiber winding disk 1 with
And 10 length of baffle is slightly less than two column spacing, fiber winding disk and baffle are located between two columns.The structure can prevent
Axial offset occurs for shaft, and goes back countershaft and radially play certain fixation, and shaft is facilitated to be rotated.Shaft 7 is wherein
Holder is stretched out in one end, and a handle 4 is arranged for rotating shaft in extension.
The utility model is simple in structure, and single mode optical fiber is placed in adjuster, causes cross section of optic fibre using fibre-optical bending
Interior stress anisotropy distribution, due to photoelastic effect, fiber optic materials index distribution changes, to generate additional answer
Power birefringence causes the variation of guided wave polarization state, realizes the control to polarization state.The utility model is simple in structure, easy to operate,
Optical fiber is easy to loading and unloading, and complete machine makes simply, at low cost.It can be applied to coherent fiber communication, coherent measurement etc. and need light polarization
System in because polarised light transmit in a fiber without Space Coupling, it can be achieved that in real time debugging.
Claims (5)
1. a kind of simple fibre-optic polarization adjuster, including fiber winding disk, shaft and holder, it is characterised in that：On the fiber winding disk
It is useful for the groove of Optical Fiber Winding, the notch of groove extends to the edge of fiber winding disk, via, shaft setting are arranged below fiber winding disk
In the vias, shaft and fiber winding disk are fixed with the screw being radially arranged along shaft to make fiber winding disk that can rotate with shaft,
The both ends of shaft are set in holder, and shaft is located at the part in holder and is set with rubber ring, shaft, rubber ring and holder
Tight fit.
2. simple fibre-optic polarization adjuster according to claim 1, it is characterised in that：Further include a baffle, baffle is solid
It is scheduled in fine plate disc for the fixed optical fiber being wrapped on fiber winding disk.
3. simple fibre-optic polarization adjuster according to claim 2, it is characterised in that：Pair with rubber ring of the holder
Position is answered to be provided with transverse concave groove, roller end and rubber ring setting are respectively positioned in transverse concave groove, with the catch being vertically arranged
Shaft and rubber ring are fixed in transverse concave groove, catch is fixed on holder.
4. simple fibre-optic polarization adjuster according to claim 3, it is characterised in that：Wherein one end of the shaft is stretched out
Holder, and a handle is set for rotating shaft in extension.
5. simple fibre-optic polarization adjuster according to claim 4, it is characterised in that：The holder includes horizontally disposed
Chassis and two columns being vertically arranged, fiber winding disk and baffle and column tight fit, fiber winding disk and baffle are located at two
Between column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820235744.5U CN207851406U (en) | 2018-02-09 | 2018-02-09 | Simple fibre-optic polarization adjuster |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820235744.5U CN207851406U (en) | 2018-02-09 | 2018-02-09 | Simple fibre-optic polarization adjuster |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207851406U true CN207851406U (en) | 2018-09-11 |
Family
ID=63409409
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820235744.5U Active CN207851406U (en) | 2018-02-09 | 2018-02-09 | Simple fibre-optic polarization adjuster |
Country Status (1)
| Country | Link |
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| CN (1) | CN207851406U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407302A (en) * | 2018-11-22 | 2019-03-01 | 桂林聚联科技有限公司 | A kind of Polarization Controller |
| US10790908B1 (en) * | 2019-04-05 | 2020-09-29 | Verizon Patent And Licensing Inc. | Optical communication link identifier |
-
2018
- 2018-02-09 CN CN201820235744.5U patent/CN207851406U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109407302A (en) * | 2018-11-22 | 2019-03-01 | 桂林聚联科技有限公司 | A kind of Polarization Controller |
| US10790908B1 (en) * | 2019-04-05 | 2020-09-29 | Verizon Patent And Licensing Inc. | Optical communication link identifier |
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