CN109507771A - A kind of polarization maintaining optical fibre end face is to shaft device and method - Google Patents
A kind of polarization maintaining optical fibre end face is to shaft device and method Download PDFInfo
- Publication number
- CN109507771A CN109507771A CN201811369359.0A CN201811369359A CN109507771A CN 109507771 A CN109507771 A CN 109507771A CN 201811369359 A CN201811369359 A CN 201811369359A CN 109507771 A CN109507771 A CN 109507771A
- Authority
- CN
- China
- Prior art keywords
- optical fibre
- maintaining optical
- polarization maintaining
- axis
- face
- 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.)
- Granted
Links
Classifications
-
- 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
- G02B6/02—Optical fibres with cladding with or without a coating
- G02B6/024—Optical fibres with cladding with or without a coating with polarisation maintaining properties
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/34—Microscope slides, e.g. mounting specimens on microscope slides
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B21/00—Microscopes
- G02B21/36—Microscopes arranged for photographic purposes or projection purposes or digital imaging or video purposes including associated control and data processing arrangements
- G02B21/361—Optical details, e.g. image relay to the camera or image sensor
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Mechanical Coupling Of Light Guides (AREA)
Abstract
The present invention provides a kind of polarization maintaining optical fibre end faces to shaft device and method.The end face to shaft device include microscope, lighting source, cross objective table, to axis control module, dead axle control module and executing agency；Wherein microscope ocular visual field is equipped with reference line, and ends cutting treated polarization maintaining optical fibre is clamped by the fixture to axis control module, will be to be placed under microcobjective to axis polarization maintaining optical fibre end face；Lighting source is used to carry out polishing illumination to polarization maintaining optical fibre side covering, so as to appear in microcobjective visual field to axis polarization maintaining optical fibre end face stressed zone；Axis control module is fixedly connected with cross objective table, executing agency is used to drive by adjusting cross objective table to the rotation of axis control module, keep polarization maintaining optical fibre end face stressed zone profile and the reference line in microscope ocular visual field tangent, realize fiber end face and reference line to axis, dead axle control module is used to that the polarization maintaining optical fibre to axis to be completed by the clamping of fixture grip block, completes fiber end face and reference line dead axle.
Description
Technical field
The present invention relates to a kind of polarization maintaining optical fibre end faces to shaft device and method, belongs to electronic optical fibre technical field.
Background technique
Polarization maintaining optical fibre is the important foundation equipment for constituting coherent light communication and Coherent optical fiber sensing system.By in light
It is artificially produced in fibre birefringent and " makes the propagation constant of two in polarization maintaining optical fibre linear polarization basic modes that larger difference occur to have
Effect inhibits random unstable mode-coupling resonat in communication process, to realize the transmission requirement of polarization-maintaining performance and high-precision signal.
Nearly 20dB can be improved in theoretically " sensitivity of the coherence detection than direct amplitude detection；Therefore based on polarization maintaining optical fibre
The Coherent fibre optical sensor of body becomes the hot spot of current optical fiber sensor research.
The detection and alignment in polarization axle orientation are the key that the application of polarization maintaining optical fibre relevant art and related device manufacture skill
Art.Can effectively control crosstalk in 30dB axis error less than 2 °, can satisfy the required precision of most of applications！
It is mentioned for polarization shaft detection and orientation problem, many scholars, mechanism according to the physical characteristic and stress structure feature of polarization maintaining optical fibre
Go out various methods, mainly there is traditional extinction ratio measurement detection technique, the center image area monitoring technology that Teng Cang company proposes,
Side can preferably solve this problem to repacking survey technology etc., but these technologies all have some limitations, and are primarily present
The problems such as application range is narrow, fiber identification ability difference or complicated device, and practical cost is higher.
Early stage, the country also had one kind to report based on micro- visual method, and operator determines it partially according to its side view as feature
Shake axis orientation.To the poor compatibility of polarization maintaining optical fibre, part polarization maintaining optical fibre is imaged unobvious the method by microscopic visual measurement, is difficult
It realizes to axis, polarization maintaining optical fibre even need to be immersed to matching fluid sometimes, and precision is lower, the debugging technical ability of operator is depended critically upon,
Error is inevitable and is difficult to calibrate, great work intensity, and operator's fatiguability is also poor to the stability of axis precision.
In addition it is larger to compared with cladding index difference to be adapted only to stressed zone refractive index for current this micro- ocular estimate
It is easy to observe the common polarization maintaining optical fibre of polarization axle.For certain particular devices, such as polarization-maintaining coupler etc. in order to improve device
Performance need to use stressed zone refractive index and cladding index difference very little PM fiber of MRI and side polishing it is difficult
With the photonic crystal polarization maintaining optical fibre of imaging.For this kind of polarization maintaining optical fibre, imaging features are not obvious, and are difficult directly to beat by side
Light imaging observation carries out polarization shaft detection, and to axis process sometimes for using matching fluid to also limit working efficiency and application
Range.
Summary of the invention
Technology of the invention solves the problems, such as: overcoming the deficiencies of the prior art and provide a kind of polarization maintaining optical fibre end face and fills to axis
It sets and method, improves the accuracy and efficiency to axis.
The technical solution of the invention is as follows: a kind of polarization maintaining optical fibre end face is to axis method, and this method comprises the following steps:
S1, the first polarization maintaining optical fibre and reference line are carried out to axis, after completing reference line to axis, by fixture grip block according to
The first polarization maintaining optical fibre to axis is completed with the clamping of the reference line same direction, completes determining for the first polarization maintaining optical fibre end face and reference line
Axis；
S2, the second polarization maintaining optical fibre and reference line are carried out to axis, after completing reference line to axis, by fixture grip block according to
The second polarization maintaining optical fibre to axis is completed with the clamping of the reference line same direction, completes determining for the second polarization maintaining optical fibre end face and reference line
Axis；
S3, fixture is respectively placed in single mode optical fiber heat sealing machine or concentric light together with the first polarization maintaining optical fibre and the second polarization maintaining optical fibre
The fixture direction of adjusting bracket two sides, the first polarization maintaining optical fibre and the second polarization maintaining optical fibre point-blank, adjusts two polarization maintaining optical fibres
Distance between the surface is held, realizes polarization maintaining optical fibre welding or docking.
The step s2 are as follows: fixture after completing reference line to axis, is pressed from both sides to axis by the second polarization maintaining optical fibre and reference line
Plate is held according to being in the second polarization maintaining optical fibre for determining the clamping of angle direction and being completed to axis with reference line, completes the second polarization maintaining optical fibre end
The dead axle in face and reference line.
The determining corner dimension is equal to shaft angle deviation θ:
For the first polarization maintaining optical fibre or the line polarisation output extinction ratio of the second polarization maintaining optical fibre；
For output extinction ratio after the first polarization maintaining optical fibre and the connection of the second polarization maintaining optical fibre；
Determine the direction of angle by successively determining using the angle of positive and negative both direction to test verifying after axis.
The step (s1) is to axis method particularly includes:
(s1.1), by ends cutting, treated to be placed under the object lens of microscope (1) to axis polarization maintaining optical fibre；
(s1.2), it treats and polishing illumination is carried out to axis polarization maintaining optical fibre side covering；
(s1.3), polarization maintaining optical fibre end face stressed zone is observed by microscopical eyepiece；
(s1.4), polarization maintaining optical fibre is rotated, keeps polarization maintaining optical fibre end face stressed zone profile and reference line tangent, realizes baseline pair
Axis.
The step s1 and step s2 is using the end face of polarization maintaining optical fibre to the realization of axis dead axle device, the end of the polarization maintaining optical fibre
In face of shaft device include microscope, lighting source, cross objective table, to axis control module, dead axle control module and executing agency；
Wherein microscope ocular visual field is equipped with reference line, and ends cutting treated polarization maintaining optical fibre is pressed from both sides by the fixture to axis control module
It holds, it will be to be placed under microcobjective to axis polarization maintaining optical fibre end face；Lighting source is used to carry out polishing to polarization maintaining optical fibre side covering
Illumination, so as to be appeared in microcobjective visual field to axis polarization maintaining optical fibre end face stressed zone；To axis control module and cross loading
Platform is fixedly connected, and executing agency is used to drive by adjusting cross objective table to the rotation of axis control module, makes polarization maintaining optical fibre end face
Stressed zone profile and the reference line in microscope ocular visual field are tangent, realize fiber end face and reference line to axis, dead axle controls mould
Block is used to that the polarization maintaining optical fibre to axis to be completed by the clamping of fixture grip block, completes fiber end face and reference line dead axle.
Another technical solution of the invention is: a kind of polarization maintaining optical fibre end face is to shaft device, including microscope, illumination
Light source, cross objective table, to axis control module, dead axle control module and executing agency；Wherein microscope ocular visual field is equipped with base
Directrix, ends cutting treated polarization maintaining optical fibre are clamped by the fixture to axis control module, will be to set to axis polarization maintaining optical fibre end face
Under microcobjective；Lighting source is used to carry out polishing illumination to polarization maintaining optical fibre side covering, so as to axis polarization maintaining optical fibre end
Face stressed zone appears in microcobjective visual field；Axis control module is fixedly connected with cross objective table, executing agency is for leading to
It overregulates cross objective table to drive to the rotation of axis control module, makes polarization maintaining optical fibre end face stressed zone profile and microscope ocular visual field
Interior reference line is tangent, realizes fiber end face and reference line to axis, dead axle control module is used for through the clamping of fixture grip block
The polarization maintaining optical fibre to axis is completed, fiber end face and reference line dead axle are completed.
The polarization maintaining optical fibre end face further includes presser feet to shaft device, and the presser feet is pressed in outside polarization maintaining optical fibre.
It is less than or equal to 1.5 ° to the cut surface to axis polarization maintaining optical fibre.
The polarization maintaining optical fibre end face further includes DV, data collecting card, computer, computer to axis to shaft device
Feedback control module, microscopical eyepiece is opposite with the camera lens of DV, so that microscopical eyepiece field of view is all presented
Under the camera lens of DV, the stressed zone contour images information of DV acquisition is sent to meter by data collecting card
Calculation machine, computer parse the stressed zone profile information that acquires in real time, obtain polarization-maintaining polarization axle to be aligned to shaft angle, then will be right
Shaft angle degree is compared calculating with required angle, obtain polarization maintaining optical fibre to axis deviation angle information, according to pair of polarization maintaining optical fibre
Axis deviation angle information acts on executing agency, the executing agency is connecing by instructing to axis feedback module output driving
After receiving driving instruction, adjusts the drive of cross objective table and axis control module rotates polarization maintaining optical fibre；Make to axis polarization-maintaining
Fiber end face stressed zone profile and the reference line in microscope ocular visual field are tangent, realize fiber end face to axis.
The computer parses the stressed zone profile information acquired in real time, obtains polarization-maintaining polarization axle to be aligned to shaft angle
Method particularly includes:
(a), to binary conversion treatment is carried out in polarization maintaining optical fibre end face figure like, it is trivial that two discrete symmetrical covering stress are extracted
Domain；
(b), the position coordinates for finding out covering stress district center respectively are determined according to the line of centres of covering stressed zone and are polarized
The linear equation of main shaft；
(c), according to the linear equation of the linear equation of polarization principal axis and reference line, polarization principal axis and reference line are parsed
To shaft angle degree.
The formula algorithm that the step (b) carries out center calculation to covering stressed zone is as follows:
In formula, (xc,yc) it is mass center cell coordinate, (x, y) is the corresponding cell coordinate of pixel each in given area, f
(x, y) is pixel gray value of the image in (x, y) point.
The advantages of the present invention over the prior art are that:
(1), polarization maintaining optical fibre is integrated and is carried out in the same apparatus to axis, dead axle operation by apparatus of the present invention, can pass through detection
Fiber end face stressed zone determines polarization maintaining optical fibre polarization axle to simple, intuitive, so that polarization maintaining optical fibre (including photonic crystal polarization-maintaining light
It is fine) axis is more easily implemented.
(2), the present invention is a kind of low cost with discrete stationary fixture to, dead axle integrated device to axis method,
To need to two polarization maintaining optical fibres to axis be aligned using multiple step format, simplify to shaft device, reduce costs；
(2), the microscopic observation for being integrated in integral type to the operation of, dead axle is carried out axis method by the present invention in shaft device,
Reduce error cumulative in, dead axle circular flow and realizing is completed it is unbiased into attachment device to the polarization maintaining optical fibre of dead axle
Transfer is planted, so that polarization-maintaining welding completely is more easily implemented；
(3), the present invention using by be connected in the heart and be rotatably assorted etc. modes by high-precision cross objective table, precise clamp,
Multiple components such as high-precision rotating mechanism, low resistance presser feet assemble accurate to shaft device, rotate in low resistance high-precision
While, it is ensured that the proper alignment of system；
(4, side illumination of the present invention, end face microscopic observation to axis method, side illumination makes fiber end face stressed zone exist
During microscopic observation, due to the refringence of itself and covering, in inner and the outer sides in the case where the illumination of face, using blue white incident light
It is reflected away from outside to inside with varying strength from end face, and forms clear contour image.
(5), the present invention on microscope ocular channel by installing connection DV, data collecting card, processing meter
Calculation machine (containing software) and feedback control system, can be completed system upgrade, realize machine survey, the feedback control of polarization maintaining optical fibre polarization axle
And auto-alignment, it improves simple to axis precision and efficiency structure, at low cost and is easily achieved, operating characteristics is good, passes through operation
Mechanism guarantee has degree of precision.
Detailed description of the invention
Fig. 1 is composite structural diagram of the polarization maintaining optical fibre end face of the present invention to shaft device；
Fig. 2 is polarization maintaining optical fibre end face of the present invention to axis schematic diagram；
Fig. 3 is Computer Image Processing schematic diagram in polarization maintaining optical fibre end face of the present invention；
Fig. 4 is that polarization maintaining optical fibre of the present invention is connected by shaft schematic diagram.
Specific embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in detail.
As shown in Figure 1, the present invention provides a kind of end faces of polarization maintaining optical fibre to shaft device, which includes aobvious to shaft device
Micro mirror 1, lighting source 3, cross objective table 4, to axis control module 8, dead axle control module 9 and for make polarization maintaining optical fibre precision turn
Dynamic executing agency 10；Wherein microscope ocular visual field is equipped with reference line, and polarization maintaining optical fibre a, after ends cutting, cutting angle is little
In 1.5 °, treated that polarization maintaining optical fibre is clamped by the fixture to axis control module 8 for ends cutting, will be to axis polarization maintaining optical fibre end face
It is placed under microcobjective；Lighting source 3 is used to carry out polishing illumination to polarization maintaining optical fibre side covering, so as to axis polarization maintaining optical fibre
End face stressed zone appears in microcobjective visual field；Axis control module 8 is fixedly connected with cross objective table 4, executing agency 10
For driving by adjusting cross objective table 4 to the rotation of axis control module 8, make polarization maintaining optical fibre end face stressed zone profile and microscope
Reference line in eyepiece field of view is tangent, realizes fiber end face and reference line to axis, dead axle control module 9 is used to clamp by fixture
The polarization maintaining optical fibre to axis is completed in plate clamping, completes fiber end face and reference line dead axle.Reference line can be on the basis of on graticle 2
Straight line, benchmark graticle 2 is fixed on micro- eyepiece end, and there are optical interfaces in the microscope ocular channel, can be only
It is aligned by benchmark graticle using control is manually visualized.
Microscope of the invention is illuminated using external light source, and the identification of polarization maintaining optical fibre end face stressed zone is polarization axle alignment
Precondition, this requires improve the contrast of stressed zone and covering in end face figure like.To improve fibre core and packet in end face figure like
The contrast of layer, introduces covering transmission-type servicing lighting, covering is illuminated in tested optical fiber side.Microscope configuration
Plain stage substituted by accurate cross objective table, because of fiber end face effective diameter (i.e. cladding diameter) very little, only
There are 40~125 μm, it is accurately placed in immediately below object lens, as close as possible to objective lens optical axis, and to guarantee fiber end face and light
Axis is vertical, therefore objective table will reach certain required precision.
The lighting source 3 uses imaging features obvious and 440 nanometers~500 nanometers of blue light or Lan Bai of eye-safe
Mixed light.The light source type of the lighting source 3 is the fibre-optical cold light source based on light emitting diode, based on the cold of light emitting diode
Light source not only can provide enough contrasts, and continuous-stable, fully meet the needs of acquisition image.The lighting source 3
Light source drawn by snakelike optical fiber tube, optical fiber pipe end distance polarization maintaining optical fibre end face to be operated longitudinally is no more than 5cm, laterally not
More than 1cm, direction is pointed into fiber end face side to tilt.Illumination intensity is improved, the comparison of end face stressed zone and covering can be improved
Degree, so as to realize stressed zone refractive index and cladding index difference very in the case where not carrying out specially treated to optical fiber
The microscopic observation of small PM fiber of MRI or special photonic crystal polarization maintaining optical fibre, and can be located in real time online by image software
Reason further increases contrast, so that end face observation is can be suitably used for various optical fiber, to expand application field, and avoids matching fluid
It uses, the use cost and complexity of device can also be reduced.
The micro- alignment in multiple step format end face need to be used to two polarization maintaining optical fibres of axis, it is same but axisymmetric fixed by adjusting two
Axis control module can freely be transplanted to polarization maintaining optical fibre welding or other docking facilities.The invention also includes presser feet, the presser feet pressure
Outside polarization maintaining optical fibre.With by the modes such as be connected in the heart and be rotatably assorted by high-precision cross objective table, precise clamp, high-precision
Multiple components such as rotating mechanism, low resistance presser feet assemble a set of accurate to shaft device, will be integrated in one to, dead axle operation
The microscopic observation of formula is carried out in shaft device, is completed for reducing to error cumulative in, dead axle circular flow and realizing to fixed
Zero deflection transplanting of the polarization maintaining optical fibre of axis into attachment device, and while low resistance high-precision rotates, guarantee the same of device
Axis.
In order to improve measuring accuracy of the invention, the present invention can also be by installing connection DV and number on it
According to capture card, processing computer (algorithm software containing dead axle) and feedback control module, realize that the machine of polarization maintaining optical fibre polarization axle is surveyed, is anti-
Feedback control and auto-alignment integration, improve precision and efficiency.
End face of the present invention further includes that DV 5, data collecting card 6, computer 7, computer are anti-to axis to shaft device
Control module 11 is presented, the eyepiece of microscope 1 is opposite with the camera lens of DV 6, so that microscopical eyepiece field of view is all in
Under the camera lens of present DV 6, the eyepiece of microscope 1 can be improved to connect with DV, connect DV
Receipts face is placed exactly in the image planes of microcobjective, guarantees the conjugate relation of each camera lens and the accuracy of object lens enlargement ratio.
The stressed zone contour images information that DV 5 acquires is sent to computer by data collecting card 6, and computer 7 is to real-time
The stressed zone profile information of acquisition parses, and obtains polarization-maintaining polarization axle to be aligned to shaft angle, then will be to shaft angle degree and required angle
It is compared calculating, obtains leading to axis deviation angle information according to polarization maintaining optical fibre to axis deviation angle information for polarization maintaining optical fibre
It crosses and 11 output driving of axis feedback module is instructed, act on executing agency 10, the executing agency 10 is receiving driving instruction
Afterwards, the drive of cross objective table 4 is adjusted to rotate polarization maintaining optical fibre axis control module 8；Make to answer axis polarization maintaining optical fibre end face
Power area profile and the reference line in microscope ocular visual field are tangent, realize fiber end face to axis.Reference line can use above-mentioned base
Quasi- graticle 2 realizes, can also use the axis fixation method identified sign area profile center of computer picture aid in treatment, two points
The line at vertical stressed zone profile center is polarization principal axis, adjusts that the line is overlapped with reference line or angle is zero, such as Fig. 2
It is shown.Whole system is installed on stabilized platform 12.
Computer 7 parses the stressed zone profile information acquired in real time, obtains polarization-maintaining polarization axle to be aligned to the tool of shaft angle
Body method are as follows:
(a), the method for reasonable gray value as thresholding is set, to carrying out binary conversion treatment in polarization maintaining optical fibre end face figure like,
Extract two discrete symmetrical covering stress regions；
(b), the position coordinates for finding out covering stress district center respectively are determined according to the line of centres of covering stressed zone and are polarized
The linear equation of main shaft；
For polarization axle, determined by finding out the position coordinates of covering stress district center respectively in bianry image, two
The symmetrical covering stressed zone line of centres is polarization principal axis, as shown in Figure 3.The formula of center calculation is carried out to covering stressed zone
Algorithm is as follows:
In formula, (xc,yc) it is mass center cell coordinate, (x, y) is the corresponding cell coordinate of pixel each in given area,
F (x, y) is pixel gray value of the image in (x, y) point.
The calculated center point of the dead axle algorithm is assembly average, the data point for participating in calculating be contained within to
Determine all data points in region, and not the only data point of edges of regions, calculated result is stablized, accurately, detection error is small, resists
Interference performance is strong.
(c), according to the linear equation of the linear equation of polarization principal axis and reference line, polarization principal axis and reference line are parsed
To shaft angle degree, which, which can be used as, carries out closed-loop control to the input value connection rotation driving mechanism of axis feedback module.
Based on above equipment, the invention also provides a kind of end faces of polarization maintaining optical fibre to axis method, as shown in figure 4, the party
Method includes the following steps:
S1, the first polarization maintaining optical fibre and reference line are carried out to axis, after completing reference line to axis, by fixture grip block according to
The first polarization maintaining optical fibre to axis is completed with the clamping of the reference line same direction, completes determining for the first polarization maintaining optical fibre end face and reference line
Axis；Following steps are specially executed to shaft device using above-mentioned end face:
S1.1, by ends cutting, treated to be placed under the object lens of microscope (1) to axis polarization maintaining optical fibre；
S 1.2, it treats to the progress polishing illumination of axis polarization maintaining optical fibre side covering；
S 1.3, polarization maintaining optical fibre end face stressed zone is observed by the eyepiece of microscope (1)；
S1.4, rotation polarization maintaining optical fibre, keep polarization maintaining optical fibre end face stressed zone profile and reference line tangent, realize baseline to axis.
S2, the second polarization maintaining optical fibre and reference line are carried out to axis, after completing reference line to axis, by fixture grip block according to
The second polarization maintaining optical fibre to axis is completed with the clamping of the reference line same direction, completes determining for the second polarization maintaining optical fibre end face and reference line
Axis；
S3, fixture is respectively placed in single mode optical fiber heat sealing machine or concentric light together with the first polarization maintaining optical fibre and the second polarization maintaining optical fibre
The fixture direction of adjusting bracket two sides, the first polarization maintaining optical fibre and the second polarization maintaining optical fibre point-blank, adjusts two polarization maintaining optical fibres
Distance between the surface is held, realizes polarization maintaining optical fibre welding or docking.
According further to optical fiber optics, and consider that secondary be aligned in optical fiber connection of polarization maintaining optical fibre causes to increase shaft angle, delustring
Than reduction, following rule-of-thumb relation is obtained through theory deduction and lot of experiment validation:
I.e. using of the invention to shaft device, to shaft angle θ and the line polarisation output extinction ratio ε by one end inputa 2, defeated after being connected by shaft
Extinction ratio ε outc 2, above-mentioned mathematical model relational expression should be met.θ is target to shaft angle θ in formula1With systematic error angle θ2The sum of, by θ1
It is set as 0 degree of angular alignment, due to systematic error angle θ2=θ-θ1, then systematic error angle θ2It can be estimated by above formula, thus to this
Device realizes regular system calibration.
Therefore, preferably, step (2) of the present invention can be with: the second polarization maintaining optical fibre and reference line are carried out
To axis, after completing reference line to axis, fixture grip block is completed in determining angle direction clamping to axis according to reference line
Second polarization maintaining optical fibre completes the dead axle of the second polarization maintaining optical fibre end face and reference line.
The determining corner dimension is equal to shaft angle deviation θ:
εa 2For the first polarization maintaining optical fibre or the line polarisation output extinction ratio of the second polarization maintaining optical fibre；
εc 2For output extinction ratio after the first polarization maintaining optical fibre and the connection of the second polarization maintaining optical fibre；
The direction of angle is determined by successively determining using the angle of positive and negative both direction to test verifying after axis, in view of upper
The calculated θ value of formula is the square root that counts of shaft system error, does not include direction, is difficult to opposite direction rotation actually to offset this
To axis error, therefore, theoretically also need to continue positive and negative θ to the first polarization maintaining optical fibre and the second polarization maintaining optical fibre on the basis of the above
Degree tests repacking, tests its output extinction ratio ε respectivelyc 2+With εc 2-, should normally obtain one and be greater than 0 degree of output delustring to shaft angle
Compare εc 2, one is less than εc 2.If wherein newly surveying extinction ratio compared with εc 2Increase then shows that error angle θ calibrating direction is correct, subsequent to press this side
It is calibrated to θ angle；Otherwise it should be calibrated using opposite direction θ angle.
Apparatus of the present invention structure is simple, at low cost and be easily achieved, and operating characteristics is good, passes through operating mechanism Precision Machining
It can ensure that degree of precision, the end stress area of different types of polarization maintaining optical fibre can be adjusted to fine registration, and convenient for subsequent
Realization is mutually butted or welding.
The content that description in the present invention is not described in detail belongs to the well-known technique of professional and technical personnel in the field.
Claims (11)
1. a kind of polarization maintaining optical fibre end face is to axis method, it is characterised in that include the following steps:
S1, the first polarization maintaining optical fibre and reference line are carried out to axis, after completing reference line to axis, by fixture grip block according to base
The first polarization maintaining optical fibre to axis is completed in the clamping of the directrix same direction, completes the dead axle of the first polarization maintaining optical fibre end face and reference line；
S2, the second polarization maintaining optical fibre and reference line are carried out to axis, after completing reference line to axis, by fixture grip block according to base
The second polarization maintaining optical fibre to axis is completed in the clamping of the directrix same direction, completes the dead axle of the second polarization maintaining optical fibre end face and reference line；
S3, fixture is respectively placed in single mode optical fiber heat sealing machine or concentric optical tune together with the first polarization maintaining optical fibre and the second polarization maintaining optical fibre
The fixture direction of section frame two sides, the first polarization maintaining optical fibre and the second polarization maintaining optical fibre point-blank, adjusts two polarization maintaining optical fibre end faces
Between distance, realize polarization maintaining optical fibre welding or docking.
2. a kind of polarization maintaining optical fibre end face according to claim 1 is to axis method, it is characterised in that the step s2 are as follows: by
Two polarization maintaining optical fibres and reference line are carried out to axis, and after completing reference line to axis, fixture grip block is pressed from both sides according to reference line in determining
The second polarization maintaining optical fibre to axis is completed in angular direction clamping, completes the dead axle of the second polarization maintaining optical fibre end face and reference line.
3. a kind of polarization maintaining optical fibre end face according to claim 2 is to axis method, it is characterised in that the determining corner dimension
Equal to shaft angle deviation θ:
For the first polarization maintaining optical fibre or the line polarisation output extinction ratio of the second polarization maintaining optical fibre；
For output extinction ratio after the first polarization maintaining optical fibre and the connection of the second polarization maintaining optical fibre；
Determine the direction of angle by successively determining using the angle of positive and negative both direction to test verifying after axis.
4. being based on a kind of polarization maintaining optical fibre end face of any of claims 1 or 2 to axis method, it is characterised in that the step s1 is to axis
Method particularly includes:
S1.1, by ends cutting, treated to be placed under the object lens of microscope (1) to axis polarization maintaining optical fibre；
S1.2, it treats to the progress polishing illumination of axis polarization maintaining optical fibre side covering；
S1.3, polarization maintaining optical fibre end face stressed zone is observed by microscopical eyepiece；
S1.4, rotation polarization maintaining optical fibre, keep polarization maintaining optical fibre end face stressed zone profile and reference line tangent, realize baseline to axis.
5. a kind of polarization maintaining optical fibre end face according to claim 1 or 2 is to axis method, it is characterised in that the step s1 and step
Rapid s2 realizes that the end face of the polarization maintaining optical fibre includes microscope to shaft device to axis dead axle device using the end face of polarization maintaining optical fibre
(1), lighting source (3), cross objective table (4), to axis control module (8), dead axle control module (9) and executing agency (10)；
Wherein microscope (1) eyepiece field of view is equipped with reference line, and ends cutting treated polarization maintaining optical fibre is by the folder to axis control module (8)
Tool clamping, will be to be placed under microcobjective axis polarization maintaining optical fibre end face；Lighting source (3) be used for polarization maintaining optical fibre side covering into
Row polishing illumination, so as to be appeared in microcobjective visual field to axis polarization maintaining optical fibre end face stressed zone；To axis control module (8) with
Cross objective table (4) is fixedly connected, and executing agency (10) is used to drive by adjusting cross objective table (4) to axis control module
(8) rotate, keep polarization maintaining optical fibre end face stressed zone profile and the reference line in microscope ocular visual field tangent, realize fiber end face and
To axis, dead axle control module (9) is used to that the polarization maintaining optical fibre to axis to be completed by the clamping of fixture grip block reference line, completes optical fiber
End face and reference line dead axle.
6. a kind of polarization maintaining optical fibre end face is to shaft device, it is characterised in that including microscope (1), lighting source (3), cross objective table
(4), to axis control module (8), dead axle control module (9) and executing agency (10)；Wherein microscope ocular visual field is equipped with benchmark
Line, ends cutting treated polarization maintaining optical fibre are clamped by the fixture to axis control module (8), will be to set to axis polarization maintaining optical fibre end face
Under microcobjective；Lighting source (3) is used to carry out polishing illumination to polarization maintaining optical fibre side covering, so as to axis polarization maintaining optical fibre
End face stressed zone appears in microcobjective visual field；Axis control module (8) is fixedly connected with cross objective table (4), executes machine
Structure (10) is used to drive by adjusting cross objective table (4) to axis control module (8) rotation, makes polarization maintaining optical fibre end face stressed zone wheel
It is wide tangent with the reference line in microscope ocular visual field, fiber end face and reference line are realized to axis, and dead axle control module (9) is used for
The polarization maintaining optical fibre to axis is completed by the clamping of fixture grip block, completes fiber end face and reference line dead axle.
7. a kind of polarization maintaining optical fibre end face according to claim 6 is to shaft device, it is characterised in that it further include presser feet, the pressure
Foot press is outside polarization maintaining optical fibre.
8. a kind of polarization maintaining optical fibre end face according to claim 6 is to shaft device, it is characterised in to axis polarization maintaining optical fibre
Cut surface is less than or equal to 1.5 °.
9. according to a kind of described in any item polarization maintaining optical fibre end faces of claim 6~8 to shaft device, it is characterised in that further include number
Code video camera (5), data collecting card (6), computer (7), computer are to axis feedback control module (11), the mesh of microscope (1)
Mirror is opposite with the camera lens of DV (6), so that microscopical eyepiece field of view is all presented on the camera lens of DV (6)
Under, the stressed zone contour images information of DV (5) acquisition is sent to computer, computer by data collecting card (6)
(7) the stressed zone profile information that acquires in real time is parsed, obtains polarization-maintaining polarization axle to be aligned to shaft angle, then will to shaft angle degree with
Required angle is compared calculating, obtain polarization maintaining optical fibre to axis deviation angle information, according to polarization maintaining optical fibre to axis deflecting angle
Information is spent, by acting on executing agency (10), the executing agency (10) to the instruction of axis feedback module (11) output driving,
After receiving driving instruction, adjusts cross objective table (4) drive and axis control module (8) rotates polarization maintaining optical fibre；Make
To tangent to axis polarization maintaining optical fibre end face stressed zone profile and the reference line in microscope ocular visual field, realization fiber end face is to axis.
10. a kind of polarization maintaining optical fibre end face according to claim 9 is to shaft device, it is characterised in that computer (7) is to real-time
The stressed zone profile information of acquisition parses, and obtains polarization-maintaining polarization axle to be aligned to shaft angle method particularly includes:
(a), to binary conversion treatment is carried out in polarization maintaining optical fibre end face figure like, two discrete symmetrical covering stress regions are extracted；
(b), the position coordinates for finding out covering stress district center respectively determine polarization principal axis according to the line of centres of covering stressed zone
Linear equation；
(c), according to the linear equation of the linear equation of polarization principal axis and reference line, parse polarization principal axis and reference line to axis
Angle.
11. a kind of polarization maintaining optical fibre end face according to claim 10 is to shaft device, it is characterised in that the step (b) is to packet
The formula algorithm that ply stress area carries out center calculation is as follows:
In formula, (xc,yc) it is mass center cell coordinate, (x, y) is the corresponding cell coordinate of pixel each in given area, f (x, y)
It is pixel gray value of the image in (x, y) point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811369359.0A CN109507771B (en) | 2018-11-16 | 2018-11-16 | Polarization maintaining optical fiber end surface axial aligning device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811369359.0A CN109507771B (en) | 2018-11-16 | 2018-11-16 | Polarization maintaining optical fiber end surface axial aligning device and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109507771A true CN109507771A (en) | 2019-03-22 |
| CN109507771B CN109507771B (en) | 2020-09-18 |
Family
ID=65748877
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811369359.0A Active CN109507771B (en) | 2018-11-16 | 2018-11-16 | Polarization maintaining optical fiber end surface axial aligning device and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109507771B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542948A (en) * | 2019-07-19 | 2019-12-06 | 北京航天时代光电科技有限公司 | method and system for preparing photonic crystal fiber assembly |
| CN110888197A (en) * | 2019-12-11 | 2020-03-17 | 北京工业大学 | Polarization maintaining optical fiber counter shaft device based on optical fiber internal microstructure far-field pattern |
| CN111174717A (en) * | 2020-01-10 | 2020-05-19 | 长飞光纤光缆股份有限公司 | Optical fiber geometric parameter testing system and method |
| CN111579214A (en) * | 2020-05-28 | 2020-08-25 | 长飞光纤光缆股份有限公司 | Automatic space coupling optical fiber matching fluid dipping device |
| CN112596165A (en) * | 2020-12-14 | 2021-04-02 | 武汉红星杨科技有限公司 | Automatic coupling device for optical fiber waveguide array |
| CN114018933A (en) * | 2021-11-03 | 2022-02-08 | 株洲菲斯罗克光电科技股份有限公司 | Optical fiber surface observer |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002116339A (en) * | 2000-10-10 | 2002-04-19 | Sumitomo Electric Ind Ltd | Fusion splicing method for constant polarization optical fiber |
| US20020166953A1 (en) * | 2001-05-10 | 2002-11-14 | Toshiki Kubo | Method for estimating amount of angular disagreement of planes of polarization of polarization-maintaining optical fibers and for connecting polarization-maintaining optical fibers |
| CN2556659Y (en) * | 2002-05-10 | 2003-06-18 | 上海海蓝光通讯技术有限公司 | Automatic regulator for polarizing shaft |
| EP1478958A1 (en) * | 2002-02-26 | 2004-11-24 | Telefonaktiebolaget LM Ericsson (publ) | Pm fiber alignment |
| CN101419311A (en) * | 2008-11-11 | 2009-04-29 | 北京大学 | Countershaft matching method for side elevation of polarization maintaining optical fibre and apparatus thereof |
| WO2010039951A1 (en) * | 2008-10-01 | 2010-04-08 | Afl Telecommunications Llc | Method of aligning polarization-maintaining optical fiber by image profile analysis |
| CN103308978A (en) * | 2013-05-29 | 2013-09-18 | 北京航空航天大学 | Automatic polarization-maintaining optical fiber axis positioning system |
| 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 |
| CN203870289U (en) * | 2014-04-18 | 2014-10-08 | 河北四方通信设备有限公司 | Polarization maintaining fiber aligning and positioning device |
| CN106324750A (en) * | 2015-07-09 | 2017-01-11 | 中国航空工业第六八研究所 | Small-diameter polarization-maintaining fiber and micro-chip fixed-shaft coupling system and method |
| CN106569344A (en) * | 2015-10-08 | 2017-04-19 | 南京南瑞继保电气有限公司 | Axis measuring and axis rotating device for polarization maintaining optical fiber |
| CN207516593U (en) * | 2017-11-29 | 2018-06-19 | 江苏光扬光电科技有限公司 | A kind of wire jumper lock pin polarization maintaining optical fibre to axis tooling |
-
2018
- 2018-11-16 CN CN201811369359.0A patent/CN109507771B/en active Active
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002116339A (en) * | 2000-10-10 | 2002-04-19 | Sumitomo Electric Ind Ltd | Fusion splicing method for constant polarization optical fiber |
| US20020166953A1 (en) * | 2001-05-10 | 2002-11-14 | Toshiki Kubo | Method for estimating amount of angular disagreement of planes of polarization of polarization-maintaining optical fibers and for connecting polarization-maintaining optical fibers |
| EP1478958A1 (en) * | 2002-02-26 | 2004-11-24 | Telefonaktiebolaget LM Ericsson (publ) | Pm fiber alignment |
| CN2556659Y (en) * | 2002-05-10 | 2003-06-18 | 上海海蓝光通讯技术有限公司 | Automatic regulator for polarizing shaft |
| WO2010039951A1 (en) * | 2008-10-01 | 2010-04-08 | Afl Telecommunications Llc | Method of aligning polarization-maintaining optical fiber by image profile analysis |
| CN101419311A (en) * | 2008-11-11 | 2009-04-29 | 北京大学 | Countershaft matching method for side elevation of polarization maintaining optical fibre and apparatus thereof |
| CN103308978A (en) * | 2013-05-29 | 2013-09-18 | 北京航空航天大学 | Automatic polarization-maintaining optical fiber axis positioning system |
| 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 |
| CN203870289U (en) * | 2014-04-18 | 2014-10-08 | 河北四方通信设备有限公司 | Polarization maintaining fiber aligning and positioning device |
| CN106324750A (en) * | 2015-07-09 | 2017-01-11 | 中国航空工业第六八研究所 | Small-diameter polarization-maintaining fiber and micro-chip fixed-shaft coupling system and method |
| CN106569344A (en) * | 2015-10-08 | 2017-04-19 | 南京南瑞继保电气有限公司 | Axis measuring and axis rotating device for polarization maintaining optical fiber |
| CN207516593U (en) * | 2017-11-29 | 2018-06-19 | 江苏光扬光电科技有限公司 | A kind of wire jumper lock pin polarization maintaining optical fibre to axis tooling |
Non-Patent Citations (2)
| Title |
|---|
| 刘振华: "高准确度熊猫保偏光纤自动定轴技术", 《光子学报》 * |
| 王金娥: "基于五点特征值的匹配型保偏光纤定轴新方法", 《光通信技术》 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110542948A (en) * | 2019-07-19 | 2019-12-06 | 北京航天时代光电科技有限公司 | method and system for preparing photonic crystal fiber assembly |
| CN110888197A (en) * | 2019-12-11 | 2020-03-17 | 北京工业大学 | Polarization maintaining optical fiber counter shaft device based on optical fiber internal microstructure far-field pattern |
| CN111174717A (en) * | 2020-01-10 | 2020-05-19 | 长飞光纤光缆股份有限公司 | Optical fiber geometric parameter testing system and method |
| CN111579214A (en) * | 2020-05-28 | 2020-08-25 | 长飞光纤光缆股份有限公司 | Automatic space coupling optical fiber matching fluid dipping device |
| CN112596165A (en) * | 2020-12-14 | 2021-04-02 | 武汉红星杨科技有限公司 | Automatic coupling device for optical fiber waveguide array |
| CN114018933A (en) * | 2021-11-03 | 2022-02-08 | 株洲菲斯罗克光电科技股份有限公司 | Optical fiber surface observer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109507771B (en) | 2020-09-18 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109507771A (en) | A kind of polarization maintaining optical fibre end face is to shaft device and method | |
| CN103477206B (en) | Optical anisotropy's parameter measuring apparatus, measuring method and measurement system | |
| CN100412585C (en) | PM fiber alignment | |
| CN102829903B (en) | MEMS (Micro Electro Mechanical System) scanning type laser heterodyne interferometer and method thereof in measuring glass stress | |
| CN104949689A (en) | Source imaging-based laser plummet digital calibrating method and device | |
| CN107941477A (en) | Spectroscope measuring method and device capable of accurately controlling incident angle | |
| JPS63131042A (en) | Automatic lens meter | |
| CN107132618A (en) | A kind of microstructured optical fibers welding system and welding process | |
| CN105547198A (en) | Lens split beam photoelectric angle measuring device and detection method thereof | |
| CN101294965A (en) | Miniature non-mark protein chip detecting system | |
| CN107193141A (en) | The detection means and method of a kind of TFT substrate | |
| CN110530821B (en) | Measuring device and measuring method for refractive index of optical material | |
| CN107228828A (en) | The method of testing and its detection means of crystal optics uniformity | |
| US20190078973A1 (en) | Method and Apparatus for Performing Interrelation Profile Analysis | |
| CN207741917U (en) | Spectroscope measuring device capable of accurately controlling incident angle | |
| CN101526342B (en) | Detecting device and method of unevenness of a glass substrate | |
| CN2605569Y (en) | Semi automatic V prismatic refractometer | |
| JPH02196204A (en) | Method for aligning axis of constant polarization optical fiber | |
| KR20030046118A (en) | Automatic lensmeter and method for measuring refractive power of progressive lens | |
| CN102880018B (en) | Reference grating space image adjusting device used for alignment system and adjusting method | |
| CN205691840U (en) | A kind of photonic crystal fiber online dead axle instrument | |
| JPS6022322Y2 (en) | Visual alignment device for small-core optical fiber | |
| CN212674417U (en) | Device for measuring optical axis position degree of cut concave lens by reflection method | |
| CN116224627B (en) | Alignment system and method of polarization modulation equipment | |
| CN115112572B (en) | Automatic testing device for micro-area angle resolution poincare sphere |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |