CN206906697U - Electronic three-ring type Polarization Controller - Google Patents
Electronic three-ring type Polarization Controller Download PDFInfo
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- CN206906697U CN206906697U CN201720442355.5U CN201720442355U CN206906697U CN 206906697 U CN206906697 U CN 206906697U CN 201720442355 U CN201720442355 U CN 201720442355U CN 206906697 U CN206906697 U CN 206906697U
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- Prior art keywords
- polarization
- ring
- synchronous pulley
- rotary shaft
- stepper motor
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Abstract
The utility model discloses a kind of electronic three-ring type Polarization Controller, including base and three groups of drive mechanisms being arranged on side by side on base；Drive mechanism includes stepper motor, polarization ring, rotary shaft, timing belt, the first synchronous pulley and the second synchronous pulley；Stepper motor is fixed on base, and the main shaft connection of the first synchronous pulley and stepper motor, the second synchronous pulley is engaged with rotation axis connection, timing belt with the first synchronous pulley and the second synchronous pulley, and polarization ring is fixed on the rotary shaft；Stepper motor passes sequentially through timing belt and rotary shaft drives polarization ring to rotate；Three groups of drive mechanisms make light wave become arbitrary polarization state output after three polarize ring successively to adjust the deflection angle of three polarization rings respectively.The utility model can be by controlling stepper motor to realize the polarization state of motorized adjustment optical fiber output light, and control voltage is low, simple in construction, smaller to optical fiber damage, and is not influenceed by temperature, humidity.
Description
Technical field
The utility model belongs to fiber optic communication and technical field of optical fiber sensing, and in particular to a kind of electronic three-ring type polarization control
Device processed.
Background technology
Polarization Controller (Polarization controller, PC), refers to that the polarization state arbitrarily inputted can be changed into
The device of any desired output polarization state.
In coherent fiber communication system, only when signal light field is consistent with the polarization state of local oscillator light field, it can just obtain pre-
The heterodyne reception high sensitivity of phase.Yet with single-mode fiber birefringent characteristic, optical fiber output polarization state can be with temperature, pressure
With bending etc. various factors and change, cause polarization state mismatch between flashlight and local oscillator light, so as to influence receiver sensitivity.
In addition, polarization maintaining optical fibre is being used as polarization direction and the light in the coherent measurement system of sensor fibre, often requiring that incident light
One of fine birefringence main shaft overlaps, to meet measurement demand.Therefore, Polarization Controller is coherent fiber communication system, and
An extremely critical module in other coherent measurement systems.
Current existing Polarization Controller mainly includes two kinds of optical-fiber squeezing type and Optical Fiber Winding type, optical-fiber squeezing type polarization
Controller produces deformation so as to extrude optical fiber after being mainly powered by piezoelectric ceramics, be allowed to produce stress birfringence effect so as to change
Become the polarization state of output light, its advantage is simple in construction, and the response time is fast.Squash type polarizer shortcoming is needed using piezoelectric ceramics
High drive is wanted, and piezoelectric ceramics cost is high.Winding-type Polarization Controller is mainly at present three-ring type Polarization Controller, is passed through
Change three polarization ring angles to change the phase angle of polarization state and ovality.At present be mostly manual Polarization Controller, Wu Fa electricity
Dynamic control and remote control.Application No. 201310389254.2, the patent of invention of entitled " a kind of Polarization Controller " disclose
A kind of Polarization Controller, it utilizes gear drive, the change of polarization ring angle is realized by stepper motor, but structure is more multiple
It is miscellaneous.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of electronic three-ring type Polarization Controller, and it uses electric adjustable
Section, it is not necessary to high voltage, it is simple in construction, it is smaller to optical fiber damage, do not influenceed by temperature, humidity.
In order to solve the above technical problems, technical scheme is used by the utility model：
A kind of electronic three-ring type Polarization Controller, including base and three groups of driving machines being arranged on side by side on the base
Structure；
The drive mechanism includes stepper motor, and polarization ring, rotary shaft, timing belt, the first synchronous pulley and second are synchronous
Belt wheel；The stepper motor is fixed on the base, and first synchronous pulley is connected with the main shaft of the stepper motor, institute
State the second synchronous pulley and the rotation axis connection, the timing belt and first synchronous pulley and second synchronous pulley
Engagement, the polarization ring are fixed in the rotary shaft；The stepper motor passes sequentially through the timing belt and the rotary shaft
The polarization ring is driven to rotate；
Drive mechanism described in three groups makes light wave pass through three successively to adjust the deflection angle of three polarization rings respectively
Become arbitrary polarization state output after the individual polarization ring.
As the improvement of electronic three-ring type Polarization Controller of the present utility model, a positioning block is set on the polarization ring,
The both sides of the rotary shaft and it is provided with two locating dowels positioned at the base；When it is described polarization ring rotate make the locating piece with
During the locating dowel contact, the deflection angle of the polarization ring is 0 ° or 180 °.
As the improvement of electronic three-ring type Polarization Controller of the present utility model, the timing belt is that 2GT6 bandwidth is synchronous
Band, first synchronous pulley and second synchronous pulley are 2GT20 toothed timing wheels.
As the improvement of electronic three-ring type Polarization Controller of the present utility model, installed on the base provided with open slot
Support, the both ends of the rotary shaft are separately mounted on the open slot of two supports, and the rotary shaft turns with the support
Dynamic connection.
As the improvement of electronic three-ring type Polarization Controller of the present utility model, the wire difference of three stepper motors
Electrically connected with one drive circuit, the drive circuit driving three stepper motors to rotate respectively.
The advantageous effects that the utility model is brought using above-mentioned technical proposal are：
Relative to piezoelectric ceramic type Polarization Controller, the drive required for electronic three-ring type Polarization Controller of the present utility model
Dynamic voltage is smaller, it is not necessary to increases high-pressure modular；
Compared to common manual Polarization Controller, electronic three-ring type Polarization Controller of the present utility model passes through stepper motor
The polarization state of motorized adjustment optical fiber output light, and control voltage is low, it is simple in construction, optical fiber is damaged it is smaller, and not by temperature,
Humidity influences；
The utility model be meshed by timing belt with tooth with the teeth groove of the first synchronous pulley and the second synchronous pulley come
Passing power, it has the characteristics of gearratio is accurate, and tension stress is strong, it is possible to achieve the deflection angle of accurate control polarization ring.
Brief description of the drawings
Fig. 1 is the front view of the electronic three-ring type Polarization Controller of the embodiment of the utility model one；
Fig. 2 is the three-dimensional structure diagram of the electronic three-ring type Polarization Controller of the embodiment of the utility model one.
In figure, 1- polarization rings；2- rotary shafts；3- stepper motors；4- bases；The synchronous pulleys of 5- first；The timing belts of 6- second
Wheel；7- timing belts；8- supports；9- locating dowels；10- locating pieces.
Embodiment
It is new to this practicality below in conjunction with accompanying drawing to make the purpose of this utility model, technical scheme and advantage clearer
Each embodiment of type is explained in detail.
A kind of electronic three-ring type Polarization Controller, including base 4 and three groups of drive mechanisms being arranged on side by side on base 4；
Drive mechanism includes stepper motor 3, polarization ring 1, rotary shaft 2, timing belt 7, the first synchronous pulley 5 and the second synchronous pulley 6；
Stepper motor 3 is fixed on base 4, and the first synchronous pulley 5 is connected with the main shaft of stepper motor 3, the second synchronous pulley 6 and rotation
Axle 2 is connected, and timing belt 7 engages with the first synchronous pulley 5 and the second synchronous pulley 6, and polarization ring 1 is fixed in rotary shaft 2；Stepping
Motor 3 passes sequentially through timing belt 7 and rotary shaft 2 drives polarization ring 1 to rotate；Three groups of drive mechanisms adjusting three polarizations respectively
The deflection angle of ring 1, light wave is set to become arbitrary polarization state output after three polarize ring 1 successively.It is synchronous in the present embodiment
The advantages of band 7, the first synchronous pulley 5 and the second synchronous pulley 6 combine V belt translation, Chain conveyer and gear drive each.Rotate
When, by being meshed with tooth with the gear taken turns come passing power.Transmission has accurate gearratio, no cunning with the transmission of timing belt 7
Difference, stable drive, energy absorbing, noise is small, and gear range is big, general up to 1:10.Electronic three ring provided by the utility model
Arbitrary input light polarization conversion can be any form of output polarization state by formula Polarization Controller.The utility model is adopted
With motorized adjustment, it is not necessary to high voltage, it is simple in construction, it is smaller to optical fiber damage, do not influenceed by temperature, humidity.
In one embodiment of the present utility model, polarize and set a positioning block 10 on ring 1, in the both sides of rotary shaft 2 and position
Two locating dowels 9 are provided with base 4；When polarization ring 1, which rotates, locating piece 10 is contacted with locating dowel 9, the deflection of ring 1 is polarized
Angle is 0 ° or 180 °.In the present embodiment, locating piece 10 is located at the top of polarization ring 1, when locating piece 10 and one of positioning
When post 9 contacts, the deflection angle of polarization ring 1 is 0 °；When locating piece 10 contacts with another locating dowel 9, the deflection of ring 1 is polarized
Angle is 180 °.Comparatively 0 ° and 180 ° is.Positioning polarization ring 1 is calibrated by the contact with locating dowel 9 of locating piece 10
Deflection angle.
In one embodiment of the present utility model, timing belt 7 is 2GT6 bandwidth timing belt 7, the first synchronous pulley 5 and
Two synchronous pulleys 6 are 2GT20 toothed timing wheels.In the present embodiment, timing belt 7 selects 2GT6 bandwidth timing belts, with a length of
202mm, there is the characteristics of gearratio is accurate, and tension stress is strong, it is possible to achieve the anglec of rotation of accurate control rotary shaft 2.Accordingly
Ground, the first synchronous pulley 5 and the second synchronous pulley 6 selection 2GT20 toothed timing wheels, bandwidth 7mm, external diameter 16mm, size are big
It is small that 1 180 ° of ring of polarization is rotated freely.
In one embodiment of the present utility model, the inner side of polarization ring 1 has the annular optical fiber duct for accommodating optical fiber, optical fiber
Lay along optical fiber duct, and extended out from rotary shaft 2 to both sides.Optical fiber can be stressed under the drive that polarization ring 1 rotates
Effect, birefringence caused by stress makes to produce phase delay in orthogonal polarization orientation, you can realize the polarization state of light from
By changing.Wherein three polarization rings 1 are equivalent to λ/4, λ/2, λ/4 three kind wave plate respectively, and it is inclined that light wave by the wave plate of λ/4 is converted to line
Shake light, then adjusts polarization direction by the wave plate of λ/2, finally via the wave plate of λ/4 by the polarization state of linearly polarized light become it is arbitrary partially
Polarization state.Carryover effects are mainly by the cladding radius of optical fiber, fiber optic loop around radius and optical wavelength institute as caused by birefringence effect
Determine, electronic three-ring type Polarization Controller of the present utility model can produce the change of comprehensive polarization state, the polarization state of adjustment
Whole poincare sphere can be covered.
In one embodiment of the present utility model, support 8 of the installation provided with open slot, the both ends of rotary shaft 2 on base 4
It is separately mounted on the open slot of two supports 8, rotary shaft 2 is rotatablely connected with two supports 8.In the present embodiment, open slot with
The upper surface insertion of support 8, optical fiber thus can from the top down be filled in and do optical patchcord again, also devise optical fiber in addition and
Corresponding optical patchcord is built into polarization ring 1, you can is threaded directly into the optical fiber of outside in the joints of optical fibre, operation is very
It is convenient；The installation and removal of rotary shaft 2 are also convenient for simultaneously.
In one embodiment of the present utility model, the wire of three stepper motors 3 electrically connects with one drive circuit respectively,
Drive circuit driving three stepper motors 3 to rotate respectively.In the present embodiment, stepper motor 3 can be realized by program
Remote control, and then the accurate deflection angle for controlling polarization ring 1.
Compared to common manual Polarization Controller, the utility model can be by controlling stepper motor 3 to realize motorized adjustment
The polarization state of output light, its go into operation it is low to voltage, it is simple in construction, optical fiber is damaged smaller, and not influenceed by temperature, humidity.
In addition, compared to piezoelectric ceramic type Polarization Controller, the driving voltage required for the utility model is smaller, thus
High-pressure modular need not be increased.Polarization Controller provided by the utility model is required suitable for the light of random polarization state is converted into
Polarization state light.
To sum up, the utility model is simple in construction both can not to need high voltage again with motorized adjustment, to optical fiber damage compared with
Polarization Controller that is small, and not influenceed by temperature, humidity.
It is described above, the only preferable embodiment of the utility model, but the scope of protection of the utility model is not
This is confined to, any one skilled in the art can readily occur in the technical scope that the utility model discloses
Change or replacement, should all cover within the scope of protection of the utility model.Therefore, the scope of protection of the utility model should
It is defined by scope of the claims.
Claims (5)
- A kind of 1. electronic three-ring type Polarization Controller, it is characterised in that：It is arranged on side by side on the base including base and three groups Drive mechanism；The drive mechanism includes stepper motor, polarization ring, rotary shaft, timing belt, the first synchronous pulley and the second synchronous pulley； The stepper motor is fixed on the base, and first synchronous pulley is connected with the main shaft of the stepper motor, and described Two synchronous pulleys and the rotation axis connection, the timing belt are nibbled with first synchronous pulley and second synchronous pulley Close, the polarization ring is fixed in the rotary shaft；The stepper motor passes sequentially through the timing belt and the rotary shaft band The dynamic polarization ring rotates；Drive mechanism described in three groups makes light wave pass through three institutes successively to adjust the deflection angle of three polarization rings respectively Become arbitrary polarization state output after stating polarization ring.
- 2. electronic three-ring type Polarization Controller as claimed in claim 1, it is characterised in that：A positioning is set on the polarization ring Block, two locating dowels are provided with the both sides of the rotary shaft and on the base；When it is described polarization ring rotate make it is described fixed When position block contacts with the locating dowel, the deflection angle of the polarization ring is 0 ° or 180 °.
- 3. electronic three-ring type Polarization Controller as claimed in claim 1, it is characterised in that：The timing belt is that 2GT6 bandwidth is same Band is walked, first synchronous pulley and second synchronous pulley are 2GT20 toothed timing wheels.
- 4. electronic three-ring type Polarization Controller as claimed in claim 1, it is characterised in that：Installation is provided with opening on the base The support of groove, the both ends of the rotary shaft are separately mounted on the open slot of two supports, the rotary shaft and the branch Frame is rotatablely connected.
- 5. electronic three-ring type Polarization Controller as claimed in claim 1, it is characterised in that：The wire of three stepper motors Electrically connected respectively with one drive circuit, the drive circuit driving three stepper motors to rotate respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720442355.5U CN206906697U (en) | 2017-04-25 | 2017-04-25 | Electronic three-ring type Polarization Controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720442355.5U CN206906697U (en) | 2017-04-25 | 2017-04-25 | Electronic three-ring type Polarization Controller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206906697U true CN206906697U (en) | 2018-01-19 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720442355.5U Expired - Fee Related CN206906697U (en) | 2017-04-25 | 2017-04-25 | Electronic three-ring type Polarization Controller |
Country Status (1)
| Country | Link |
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| CN (1) | CN206906697U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031653A (en) * | 2018-07-23 | 2018-12-18 | 北京图湃影像科技有限公司 | A kind of automatic control and adjustment fiber polarization device |
-
2017
- 2017-04-25 CN CN201720442355.5U patent/CN206906697U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109031653A (en) * | 2018-07-23 | 2018-12-18 | 北京图湃影像科技有限公司 | A kind of automatic control and adjustment fiber polarization device |
| CN109031653B (en) * | 2018-07-23 | 2024-05-10 | 图湃(北京)医疗科技有限公司 | Device for automatically controlling and adjusting polarization state of optical fiber |
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|---|---|---|---|
| GR01 | Patent grant | ||
| 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: 20180119 Termination date: 20180425 |