CN108919521A - A kind of polarization principal axis alignment system and method for squeezing polarization maintaining optical fibre - Google Patents
A kind of polarization principal axis alignment system and method for squeezing polarization maintaining optical fibre Download PDFInfo
- Publication number
- CN108919521A CN108919521A CN201810845905.7A CN201810845905A CN108919521A CN 108919521 A CN108919521 A CN 108919521A CN 201810845905 A CN201810845905 A CN 201810845905A CN 108919521 A CN108919521 A CN 108919521A
- Authority
- CN
- China
- Prior art keywords
- polarization
- optical fibre
- principal axis
- maintaining optical
- polarization maintaining
- 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.)
- Pending
Links
- 230000010287 polarization Effects 0.000 title claims abstract description 186
- 239000013307 optical fiber Substances 0.000 title claims abstract description 144
- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000007246 mechanism Effects 0.000 claims abstract description 35
- 230000003287 optical effect Effects 0.000 claims abstract description 23
- 238000003780 insertion Methods 0.000 claims abstract description 4
- 230000037431 insertion Effects 0.000 claims abstract description 4
- 239000000835 fiber Substances 0.000 claims description 10
- 238000001125 extrusion Methods 0.000 claims description 5
- 230000008569 process Effects 0.000 claims description 5
- 230000008859 change Effects 0.000 claims description 4
- 238000012544 monitoring process Methods 0.000 claims 1
- 230000035882 stress Effects 0.000 description 21
- 206010007247 Carbuncle Diseases 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000003786 synthesis reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011253 protective coating Substances 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 241000271460 Crotalus cerastes Species 0.000 description 1
- 208000025174 PANDAS Diseases 0.000 description 1
- 208000021155 Paediatric autoimmune neuropsychiatric disorders associated with streptococcal infection Diseases 0.000 description 1
- 240000000220 Panda oleosa Species 0.000 description 1
- 235000016496 Panda oleosa Nutrition 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000006355 external stress Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000001953 sensory effect Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/0136—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour for the control of polarisation, e.g. state of polarisation [SOP] control, polarisation scrambling, TE-TM mode conversion or separation
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F1/00—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics
- G02F1/01—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour
- G02F1/011—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour in optical waveguides, not otherwise provided for in this subclass
- G02F1/0115—Devices or arrangements for the control of the intensity, colour, phase, polarisation or direction of light arriving from an independent light source, e.g. switching, gating or modulating; Non-linear optics for the control of the intensity, phase, polarisation or colour in optical waveguides, not otherwise provided for in this subclass in optical fibres
Abstract
The polarization principal axis that the invention discloses a kind of for squeezing polarization maintaining optical fibre is directed at system and method, the system comprises light source part, polarization principal axis alignment device and polarization analysis instrument；Wherein, the light source part is to generate a specific polarization state；Polarization principal axis alignment device is used to that extruding force to be made to be aligned with the polarization maintaining optical fibre polarization principal axis being extruded, including bottom plate, connector mounting base, rotation concentric mechanism, micropositioning stage, optical fiber clamp stick, optical fiber connector fixed frame.Squeeze polarization maintaining optical fibre progress polarization principal axis includes to the method for axis：Equipped with the polarization maintaining optical fibre to be extruded of connector, its one end is fixed in the connector mounting base, then passes through rotation concentric mechanism, then is embedded into optical fiber clamping stick, is put into micropositioning stage with clamping stick, is finally fixed in end mounts.Optical fiber is straightened and torsionally passes through concentric mechanism without any, insertion optical fiber clamping stick is simultaneously put into micropositioning stage, and point-blank with the optical axis of device；By rotation concentric mechanism and pressure is adjusted, until the circle on Poincare sphere is punctured into a point, the direction of polarization principal axis is had found, realizes to axis.
Description
Technical field
The invention belongs to fiber optic communications and sensory field of optic fibre, are related to a kind of for squeezing the polarization principal axis pair of polarization maintaining optical fibre
Barebone and method.
Background technique
Wave plate is a kind of polarization optics, and effect is the phase difference for changing two polarized components of light, so that optical transport is folded
Become new polarization state after adding.The phase difference of general wave plate be it is nonadjustable, when phase difference is 2 π or n times of 2 π, line polarisation
Polarization state, referred to as full-wave plate will not be changed after；When retardation is π or its odd-multiple, the vibration that is emitted after line polarisation enters
Dynamic direction can rotate the angle with 2 times of fast axle angle, referred to as half-wave plate；When retardation is pi/2 or its odd-multiple, line polarisation exists
When 45 degree of direction incidence, emergent light will become elliptically polarized light, referred to as quarter wave plate.Polarization maintaining optical fibre as a kind of special fiber, because
For with high birefringent and two orthogonal birefringence axis (also referred to as birefringent eigenstate, polarization principal axis), therefore can use
To make optical-fibre wave plate.
However, in optic fibre light path, phase difference between two polarized components is not known simultaneously, needs to be compensated with wave plate,
Then a kind of tunable optical-fibre wave plate is just needed.When polarization maintaining optical fibre is squeezed, new stress birfringence can be generated.When answering
When power direction is directed at the polarization principal axis of polarization maintaining optical fibre, the direction of stress birfringence and the intrinsic birefringent direction weight of polarization maintaining optical fibre
It closes, and size is added.Then, the birefringent size of compression section can be changed by changing pressure, to produce tunable
Wave plate.
When making tunable wave plate, a key factor is the polarization principal axis that must assure that stress direction and polarization maintaining optical fibre
Alignment, and polarization maintaining optical fibre is very thin, and within protective coating, people do not know its polarization principal axis in which direction completely
On, it is therefore necessary to a kind of method for finding axis alignment.Another key factor is, is ensuring that extruded segment optical fiber is squeezed device pressure
Under the premise of, the other parts of optical fiber, because any other stress can all cause new birefringent, cannot be become by any pressure
A kind of interference, so that tunable wave plate be made to fail.In addition, when squeezing optical fiber, it is necessary to assure polarization maintaining optical fibre institute's pressure is positive pressure
Power is sidewindered without other lateral pressures because will lead to optical fiber in this way.Above-mentioned stringent technique requirement, so that squeezing polarization-maintaining light
Fine polarization principal axis alignment device becomes a kind of critical process equipment for making optical-fibre wave plate.
Summary of the invention
The technical problem to be solved by the present invention is to：
In order to overcome the problems, such as that polarization maintaining optical fibre polarization principal axis is difficult to look for, and during assembling squeezer eliminate it
The influence of his stress, the polarization principal axis that the invention discloses a kind of for squeezing polarization maintaining optical fibre are directed at system and method.
The present invention uses following technical scheme to solve above-mentioned technical problem：
The present invention propose it is a kind of for squeeze polarization maintaining optical fibre polarization principal axis to Barebone, including sequentially connected light source portion
Point, polarization principal axis alignment device and polarization analysis instrument；Wherein, the light source part is for generating a specific light polarization
State；The polarization principal axis alignment device is aligned for realizing the direction of extrusion with the polarization principal axis for being extruded polarization maintaining optical fibre；Described
Polarization analysis instrument is used to monitor the polarization state of the polarization maintaining optical fibre output.
A kind of foregoing polarization principal axis for squeezing polarization maintaining optical fibre is to Barebone, further, the light source
Part includes tunable optical source, the polarizer and the Polarization Controller along polarization principal axis alignment；The polarizer and Polarization Controller
For adjusting and generating a polarization state, polarization maintaining optical fibre to be extruded is inputted.
A kind of foregoing polarization principal axis for squeezing polarization maintaining optical fibre is to Barebone, further, the polarization
Spindle alignment device includes bottom plate, connector mounting base, rotation concentric mechanism, micropositioning stage, optical fiber clamps stick, optical fiber connector is fixed
Frame；Connector mounting base, rotation concentric mechanism, micropositioning stage and the optical fiber connector fixed frame is sequentially arranged at bottom along optical axis
On plate, the optical fiber clamping stick is mounted in the centre bore of micropositioning stage.
A kind of foregoing polarization principal axis for squeezing polarization maintaining optical fibre is to Barebone, further, the rotation
Concentric mechanism includes support, swivel mount, platform and squeezer；The squeezer is fixed on platform；The platform is for adjusting
Highly, the axis of rotation of the compressive plane and swivel mount that make squeezer is kept in the same plane.
A kind of foregoing polarization principal axis for squeezing polarization maintaining optical fibre is to Barebone, further, the fine tuning
It includes x, tri- axis direction of y, z and flexion-extension, beat and the sextuple micropositioning stage around Zhong Xin rotary that frame, which is one, is fixed for adjusting
Optical fiber clamping stick position and direction, make clamp stick in optical fiber with pass through rotation concentric mechanism axle center and connector
The center of mounting rack point-blank, forms the optical axis of system；The longitudinal axis of the polarization maintaining optical fibre to be extruded needs and optical axis weight
It closes, and not by any other stress.
A kind of foregoing polarization principal axis for squeezing polarization maintaining optical fibre is to Barebone, further, the end
Fixed frame includes a support and a disk, and the groove for placing optical fiber is carved on the lateral margin of the disk；The disk
Diameter is sufficiently large, and when being extruded fiber optic disc around on disk, suffered stress can be ignored；The circle of disk groove should be with light
Axis is tangent.
The present invention also proposes that a kind of method for realizing axis alignment by squeezing polarization maintaining optical fibre, step include：
Step 1: the connector of polarization maintaining optical fibre is fixed in connector mounting base；
Step 2: the polarization maintaining optical fibre is straightened and torsionally passes through concentric mechanism without any, insertion optical fiber clamps stick
And it is put into micropositioning stage；
Step 3: adjust micropositioning stage so that from micropositioning stage stretch out polarization maintaining optical fibre, rotate concentric mechanism center and
3 points of the center of connector mounting rack point-blank, constitutes the optical axis of system；
Step 4: the end of polarization maintaining optical fibre is wrapped in the disk groove of end mounts；
Step 5: adjusting light source part, a determining polarization state is generated, is injected into the polarization maintaining optical fibre；
Step 6: regulating device, is in the polarization maintaining optical fibre on the optical axis of polarization principal axis alignment device；
Step 7: the polarization maintaining optical fibre is connect with polarization analysis instrument；
Step 8: the squeezer of control rotation concentric mechanism squeezes the polarization maintaining optical fibre, change extruding force, from polarization analysis
Observation is extruded shape of the output polarization state of optical fiber on Poincare sphere on instrument；
Step 9: the squeezer of concentric mechanism is allowed to rotate an angle, above-mentioned extrusion process is repeated；If Poincare sphere
On circle become larger, then enter the tenth step；If the circle on Poincare sphere becomes smaller, enter the 11st step；
Step 10: rotation concentric mechanism rotation is changed to opposite direction rotation, until the circle on Poincare sphere is punctured into one
Point；
Step 11: the angle of rotation concentric mechanism rotation is correct, continue to increase angle, until the circle on Poincare sphere is received
It is condensed to a point；
Step 12: the circle on Poincare sphere is punctured into a point, it is believed that the direction of polarization principal axis has been found, realizes
Polarization maintaining optical fibre to axis.
The invention adopts the above technical scheme compared with prior art, has the following technical effects：
Polarization maintaining optical fibre is very thin, it is within protective coating, which direction people are difficult to understand its polarization principal axis in
On, present invention firstly provides a kind of system and method for ensuring stress direction and being aligned with the polarization principal axis of polarization maintaining optical fibre；
The diameter that the present invention passes through increase end mounts disk, it is ensured that polarization maintaining optical fibre is equivalent to not by new bending shadow
Ring, be in order to meet under the premise of ensuring extruded segment optical fiber by pressure, the other parts of optical fiber not by the condition of any pressure,
It prevents any other stress from causing new birefringent, becomes a kind of interference, so that tunable wave plate be made to fail；
When squeezing optical fiber, the present invention realizes that polarization maintaining optical fibre is only squeezed by normal pressure using platform and squeezer, without by
Other lateral pressures avoid optical fiber and sidewinder, and realize stringent technique requirement.
The polarization principal axis alignment system and method for the present invention for squeezing polarization maintaining optical fibre can not only use the tunable wave plate of solution
In polarization maintaining optical fibre polarization principal axis to axis problem, it can also be used to other needs carry out to axis polarization maintaining optical fibre polarization principal axis
In system.
Detailed description of the invention
Fig. 1 is measuring device schematic diagram of the present invention.
Wherein appended drawing reference is explained：101- light source part；The polarization principal axis alignment device of 102- extruding polarization maintaining optical fibre；103-
Polarization analysis instrument；The polarization maintaining optical fibre that 104- is extruded；105- squeezer；301- bottom plate；302- optical fiber connector mounting base；303-
Rotate concentric mechanism；304- micropositioning stage；305- optical fiber clamps stick；306- optical fiber connector fixed frame；The polarization-maintaining light that 307- is extruded
It is fine；308- squeezer.
Fig. 2 is the schematic diagram of light-source structure of the present invention.
Wherein appended drawing reference is explained：201- tunable optical source；The 202- polarizer；203- Polarization Controller.
Specific embodiment
Technical solution of the present invention is described in further detail with reference to the accompanying drawing：
Those skilled in the art can understand that unless otherwise defined, all terms used herein (including skill
Art term and scientific term) there is meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
As shown in Figure 1, a kind of polarization principal axis for squeezing polarization maintaining optical fibre squeezes Barebone, including light source part 101
The polarization principal axis alignment device 102 and polarization analysis instrument 103 of polarization maintaining optical fibre.Wherein, the light source part 101 includes one
201, polarizers 202 of a tunable optical source and a Polarization Controller 203, as shown in Figure 2；The extruding polarization maintaining optical fibre
Polarization principal axis alignment device 102, mounting base 302, one including 301, optical fiber connectors of bottom plate rotations are to the heart
303, one, the mechanism optical fiber of micropositioning stage 304, one clamps 305, optical fiber connector fixed frames 306. of stick
The principle that the present invention realizes that squeezer is aligned with polarization maintaining optical fibre polarization principal axis is as follows：
Polarization maintaining optical fibre is when by stress, the dielectric constant of polarization maintaining optical fibre (such as bow-tie type or panda type polarization-preserving fiber)
It can be described as
The left side expression of equation (1), will be from isotropism by the dielectric constant of the optical fiber of stress due to elasto-optical effect
Become anisotropy, no matter its stress source is in inside of optical fibre or outside.The first item ε of right side of the formulaina(x, y, z) I is indicated
Not by the dielectric constant of stress, wherein I is one 3 × 3 unit matrix；The Section 2 C σ of right side of the formulaint(x,y,
Z) variations in refractive index due to caused by inside of optical fibre stress is indicated, and birefringent between two orthogonal polarization modes can be in optical fiber
It is obtained by experiment measurement；The right side Section 3 C σ of equation (1)ext(x, y, z) expression is reflected due to caused by outer fiber stress
Rate variation.Under normal circumstances, the direction of external stress is different from the Orientation of polarized main axis that internal stress determines, the folder between them
Angle is expressed as θ.It is theoretical using quaternary number polarization optics, it can be proved that birefringence axis caused by external carbuncle on Poincare sphere
Angle will become 2 θ.It is intrinsic birefringent with induced birefringence collective effect caused by external carbuncle, formed it is new birefringent, this
The birefringent of synthesis is equal to the intrinsic birefringent vector sum with stress birfringence, thus synthesize it is birefringent generally with it is intrinsic birefringent
It is not coaxial.Therefore, when there is external carbuncle, because of birefringent and inherently birefringent not coaxial, that is, the input polarization of synthesis
It is birefringent not coaxial with synthesis, it, will on the polarization analysis instrument being connected with output end at this moment if changing stress intensity
It can show a circle.Only when the direction of external carbuncle with the intrinsic birefringence axis of polarization maintaining optical fibre consistent and input polarization
When consistent with them, change stress intensity just can still maintain a point on polarization analysis instrument.
In the present embodiment, system includes sequentially connected light source part, polarization principal axis alignment device and polarization analysis instrument；
Wherein, the light source part is for generating a specific polarization state；The polarization principal axis alignment device is for squeezing polarization-maintaining
Optical fiber, and it is directed at pressure direction and the polarization principal axis of the polarization maintaining optical fibre；The polarization analysis instrument is used to monitor the guarantor
The polarization state of inclined optical fiber output.
Wherein, light source part includes tunable optical source, the polarizer and the Polarization Controller of successively polarization principal axis alignment；It is described
The polarizer and Polarization Controller input polarization maintaining optical fibre to be extruded for adjusting and generating a specific polarization state.
Polarization principal axis alignment device include bottom plate, connector mounting base, rotation concentric mechanism, micropositioning stage, optical fiber clamping stick,
Optical fiber connector fixed frame；Connector mounting base, rotation concentric mechanism, micropositioning stage and the optical fiber connector fixed frame is along optical axis
It is mounted on bottom plate, the optical fiber clamping stick is mounted in the centre bore of micropositioning stage.Wherein, rotation concentric mechanism include support,
Swivel mount, platform and squeezer；The squeezer is fixed on platform；The platform makes squeezing for squeezer for adjusting height
The axis of rotation of pressure surface and swivel mount is kept in the same plane.The micropositioning stage be one include x, tri- axis direction of y, z with
And flexion-extension, beat and the sextuple micropositioning stage around middle heart rotary make to clamp stick for adjusting the position of fixed optical fiber clamping stick
In optical fiber with pass through rotation concentric mechanism axle center and connector mounting rack center point-blank, formed optical axis；
The polarization maintaining optical fibre to be extruded and this optical axis coincidence, and not by any other stress.The end mounts include one
A support and a disk are carved with the groove for placing optical fiber on the lateral margin of the disk；The disk diameter is sufficiently large, when
Fiber optic disc around is extruded when on disk, suffered stress can be ignored.On the other hand, the circle of disk groove should be with optical axis phase
It cuts.
Being extruded the technical process that optical fiber is installed is：It is first that the connector of polarization maintaining optical fibre own to be extruded is direct
It is fixed in connector mounting base, therefore, does not generate new pressure at this point for the beginning for being extruded optical fiber；Then, will
Optical fiber is straightened and torsionally passes through rotation concentric mechanism without any, and insertion optical fiber clamping stick is simultaneously put into micropositioning stage；Installation
When, notice that optical fiber clamping stick only plays supporting role, applies any pressure without coping with optical fiber, and to ensure that optical fiber is flat
Straight and no any torsion；Adjust micropositioning stage so that from micropositioning stage stretch out optical fiber, rotate concentric mechanism center, with
And 3 points of the center of connector mounting rack is point-blank, forms unique optical axis；Finally, the end for being extruded optical fiber is twined
It is wound in the disk groove of end mounts；Since the diameter of disk is sufficiently large, it is believed that optical fiber not by new pressure, because
This, the present apparatus is for being extruded optical fiber, other than extruded segment, not by any new pressure.
After polarization fiber to be extruded is installed, carry out polarization principal axis to axis, specific method is：The first step,
Light source part is adjusted, a determining polarization state is generated, is injected into optical fiber to be extruded；Second step is regulated and is extruded
Optical fiber is on the optical axis of pressurizing unit；Third step will be extruded optical fiber and connect with polarization analysis instrument；4th step, using manual
Or electronic method squeezes optical fiber, and the output polarization state of optical fiber is extruded from polarization analysis instrument, and at this moment, output polarization
A circle can be presented in state on the Poincare sphere that polarization analysis instrument is shown；5th step allows the squeezer of concentric mechanism to rotate one
Angle repeats above-mentioned extrusion process, and at this moment, the circle on Poincare sphere will appear the two kinds of situations that become larger or become smaller；6th step,
If the circle on the Poincare sphere that the 5th step is observed becomes larger, illustrate that the angle direction of concentric mechanism rotation is wrong, it should change
For opposite direction rotation；If the circle on Poincare sphere becomes smaller, illustrate that the direction of rotation of concentric mechanism is correctly, can to continue to add
Wide-angle；Two steps for repeating the 5th and the 6th, until the circle on Poincare sphere is punctured into a point, i.e., it is believed that having looked for
The direction for having arrived polarization principal axis, realizes to axis.
The above is only some embodiments of the invention, it is noted that for the ordinary skill people of the art
For member, various improvements and modifications may be made without departing from the principle of the present invention, these improvements and modifications are also answered
It is considered as protection scope of the present invention.
Claims (7)
1. a kind of polarization principal axis for squeezing polarization maintaining optical fibre is to Barebone, which is characterized in that including sequentially connected light source portion
Point, axis alignment device and polarization analysis instrument；Wherein, the light source part is for generating a specific polarization state；It is described
Polarization principal axis alignment device is aligned for realizing the direction of extrusion with polarization maintaining optical fibre polarization principal axis is extruded；The polarization analysis instrument
For monitoring the polarization state of the polarization maintaining optical fibre output.
2. a kind of polarization principal axis for squeezing polarization maintaining optical fibre as described in claim 1 is to Barebone, which is characterized in that described
Light source part include polarization principal axis alignment tunable optical source, the polarizer and Polarization Controller；The polarizer and polarization control
Device processed inputs polarization maintaining optical fibre to be extruded for adjusting and generating a polarization state.
3. a kind of polarization principal axis for squeezing polarization maintaining optical fibre as described in claim 1 is to Barebone, which is characterized in that described
Polarization principal axis alignment device include bottom plate, optical fiber connector mounting base, rotation concentric mechanism, micropositioning stage, optical fiber clamping stick, light
Fine end mounts；Connector mounting base, rotation concentric mechanism, micropositioning stage and the optical fiber connector fixed frame is pacified along optical axis
On bottom plate, the optical fiber clamping stick is mounted in the centre bore of micropositioning stage.
4. a kind of polarization principal axis for squeezing polarization maintaining optical fibre as claimed in claim 3 is to Barebone, which is characterized in that described
Rotation concentric mechanism include support, swivel mount, platform and squeezer；The squeezer is fixed on platform；The platform is used
In adjusting height, the axis of rotation of the compressive plane and swivel mount that make squeezer is kept in the same plane.
5. a kind of polarization principal axis for squeezing polarization maintaining optical fibre as claimed in claim 3 is to Barebone, which is characterized in that described
Micropositioning stage be one include x, tri- axis direction of y, z and flexion-extension, beat and the sextuple micropositioning stage around Zhong Xin rotary, for adjusting
Fixed optical fiber clamping stick position and direction, make clamp stick in optical fiber with pass through rotation concentric mechanism axle center and
The center of connector mounting rack point-blank, forms optical axis；The polarization maintaining optical fibre to be extruded is overlapped with this straight line, and
Not by any other stress.
6. a kind of polarization principal axis for squeezing polarization maintaining optical fibre as claimed in claim 3 is to Barebone, which is characterized in that described
End mounts include a support and a disk, the groove for placing optical fiber is carved on the lateral margin of the disk；The circle
Disk diameter is sufficiently large, and when being extruded fiber optic disc around on disk, suffered stress can be ignored；The circle and optical axis of disk groove
It is tangent.
7. a kind of for squeezing the polarization principal axis alignment methods of polarization maintaining optical fibre, which is characterized in that
Step 1: the connector of polarization maintaining optical fibre is fixed in connector mounting base；
Step 2: the polarization maintaining optical fibre is straightened and torsionally passes through concentric mechanism without any, insertion optical fiber clamping stick is simultaneously put
Enter into micropositioning stage；
Step 3: micropositioning stage is adjusted, so that the polarization maintaining optical fibre stretched out from micropositioning stage, the center for rotating concentric mechanism and connection
3 points of the center of device mounting rack point-blank, forms the optical axis of system；
Step 4: the end of polarization maintaining optical fibre is wrapped in the disk groove of end mounts；
Step 5: adjusting light source part, a determining polarization state is generated, is injected into the polarization maintaining optical fibre；
Step 6: adjusting polarization principal axis alignment device, keep the longitudinal axis of the polarization maintaining optical fibre consistent with the optical axis of alignment device；
Step 7: the polarization maintaining optical fibre is connect with polarization analysis instrument；
Step 8: the squeezer of control rotation concentric mechanism squeezes the polarization maintaining optical fibre, change extruding force, from polarization analysis instrument
Observation is extruded shape of the output polarization state of optical fiber on Poincare sphere；
Step 9: the squeezer of concentric mechanism is allowed to rotate an angle, above-mentioned extrusion process is repeated；If on Poincare sphere
Circle becomes larger, then enters the tenth step；If the circle on Poincare sphere becomes smaller, enter the 11st step；
Step 10: the angle for rotating concentric mechanism rotation is changed to opposite direction rotation, until the circle on Poincare sphere is punctured into one
A point；
Step 11: the angle for rotating concentric mechanism rotation is continued to increase, until the circle on Poincare sphere is punctured into a point；
When the circle on Poincare sphere is punctured at one, it is believed that the direction that polarization principal axis has been found realizes polarization-maintaining light
Fine polarization principal axis to axis.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845905.7A CN108919521A (en) | 2018-07-27 | 2018-07-27 | A kind of polarization principal axis alignment system and method for squeezing polarization maintaining optical fibre |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810845905.7A CN108919521A (en) | 2018-07-27 | 2018-07-27 | A kind of polarization principal axis alignment system and method for squeezing polarization maintaining optical fibre |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108919521A true CN108919521A (en) | 2018-11-30 |
Family
ID=64418688
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810845905.7A Pending CN108919521A (en) | 2018-07-27 | 2018-07-27 | A kind of polarization principal axis alignment system and method for squeezing polarization maintaining optical fibre |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108919521A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199513A (en) * | 2021-10-15 | 2022-03-18 | 苏州光环科技有限公司 | Optical fiber push-pull testing device |
| CN116893045A (en) * | 2023-07-21 | 2023-10-17 | 武汉楚星光纤应用技术有限公司 | Test method and test device for optical fiber mechanical anisotropy/isotropy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592722A (en) * | 2013-08-22 | 2014-02-19 | 浙江大学 | Panda type polarization maintaining fiber side looking shaft alignment device and panda type polarization maintaining fiber side looking shaft alignment method |
| CN105785505A (en) * | 2016-05-12 | 2016-07-20 | 中国工程物理研究院总体工程研究所 | Photonic crystal optical fiber axis determination device and axis determination method |
| CN106547050A (en) * | 2017-01-24 | 2017-03-29 | 中国电子科技集团公司第四十研究所 | A kind of polarization maintaining optical fibre polarization principal axis alignment device |
| CN106989852A (en) * | 2017-04-11 | 2017-07-28 | 北京交通大学 | A kind of fibre optical sensor for measuring stress direction |
| CN209821544U (en) * | 2018-07-27 | 2019-12-20 | 南京恒高光电研究院有限公司 | Polarization main shaft alignment system for extruding polarization-maintaining optical fiber |
-
2018
- 2018-07-27 CN CN201810845905.7A patent/CN108919521A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103592722A (en) * | 2013-08-22 | 2014-02-19 | 浙江大学 | Panda type polarization maintaining fiber side looking shaft alignment device and panda type polarization maintaining fiber side looking shaft alignment method |
| CN105785505A (en) * | 2016-05-12 | 2016-07-20 | 中国工程物理研究院总体工程研究所 | Photonic crystal optical fiber axis determination device and axis determination method |
| CN106547050A (en) * | 2017-01-24 | 2017-03-29 | 中国电子科技集团公司第四十研究所 | A kind of polarization maintaining optical fibre polarization principal axis alignment device |
| CN106989852A (en) * | 2017-04-11 | 2017-07-28 | 北京交通大学 | A kind of fibre optical sensor for measuring stress direction |
| CN209821544U (en) * | 2018-07-27 | 2019-12-20 | 南京恒高光电研究院有限公司 | Polarization main shaft alignment system for extruding polarization-maintaining optical fiber |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114199513A (en) * | 2021-10-15 | 2022-03-18 | 苏州光环科技有限公司 | Optical fiber push-pull testing device |
| CN116893045A (en) * | 2023-07-21 | 2023-10-17 | 武汉楚星光纤应用技术有限公司 | Test method and test device for optical fiber mechanical anisotropy/isotropy |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8174650B2 (en) | Liquid crystal display device having first and second birefringent layers and first and second quarter-wave plates | |
| EP2226674B1 (en) | Liquid crystal display device | |
| US8314908B2 (en) | Liquid crystal display device with quarter plates and birefringent layers and liquid crystal having substantially vertical alignments in black state | |
| JP4137438B2 (en) | Optical film, polarizing film using the same, and method for improving viewing angle of polarizing film | |
| EP2239625A1 (en) | Method for manufacturing liquid crystal display, and liquid crystal display | |
| JP4107741B2 (en) | Optical film manufacturing method, optical film and liquid crystal display device | |
| EP0377757A4 (en) | Reflection-type liquid crystal electro-optical device and projection-type display device using the same | |
| CN108919521A (en) | A kind of polarization principal axis alignment system and method for squeezing polarization maintaining optical fibre | |
| KR20050050589A (en) | Privacy screen for a display | |
| US3177761A (en) | Polariscope having simultaneously rotatable waveplates | |
| JP5815492B2 (en) | Optical film, polarizing plate, image display device, and 3D image display system | |
| JPH04371903A (en) | Polarization plate and liquid crystal display device | |
| KR20040102862A (en) | A method of fabricating retardation film using of polarized uv | |
| US4737005A (en) | Method for eliminating birefringence in a fiber optic coupler and a coupler polarization corrector | |
| WO2014110857A1 (en) | Liquid crystal display apparatus and method for arranging polarizers thereof | |
| CN209821544U (en) | Polarization main shaft alignment system for extruding polarization-maintaining optical fiber | |
| US6429915B1 (en) | Tilted polarizers for liquid crystal displays | |
| JP3165175B2 (en) | Polarizing plate and liquid crystal display | |
| KR20020036311A (en) | Fabrication of Quarter-wave Films Using a Liquid Crystal and Application to the CLC Polarizer | |
| JP5049705B2 (en) | Transparent film, polarizing plate, and liquid crystal display device | |
| KR20030032749A (en) | Fabrication Method Of A Retardation Film Using Nematic Liquid Crystals And A Retardation Film Thereby | |
| CN220872738U (en) | Polarizing device for electronic equipment | |
| KR20050004455A (en) | A method of fabricating retardation film using of ion beam | |
| SUN et al. | 22.1: Fabrication of Broadband Quarter Wave Plate by Combination of Two Retardation Films Using Coating Technique | |
| CN107966755B (en) | Phase difference film, preparation method and display device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |