CN208860314U - Panda type polarization-preserving fiber windup-degree on-line measurement device - Google Patents
Panda type polarization-preserving fiber windup-degree on-line measurement device Download PDFInfo
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- CN208860314U CN208860314U CN201821708120.7U CN201821708120U CN208860314U CN 208860314 U CN208860314 U CN 208860314U CN 201821708120 U CN201821708120 U CN 201821708120U CN 208860314 U CN208860314 U CN 208860314U
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Abstract
The utility model relates to a kind of panda type polarization-preserving fiber windup-degree on-line measurement device, it includes first laser incidence mount, second laser incidence mount, the first CCD camera, the second CCD camera, optical sensor and computer system；The first laser incidence mount and second laser incidence mount are separately positioned on the adjacent two sides of panda type polarization-preserving fiber, first CCD camera and the second CCD camera are separately positioned on the two sides of panda type polarization-preserving fiber corresponding with first laser incidence mount and second laser incidence mount, first CCD camera and the second CCD camera are connected with computer system respectively, and the computer system is connected with optical sensor.The windup-degree of real time position optical fiber can be obtained in the utility model, and measurement accuracy is higher, and reducing shake bring during drawing optical fibers or coiling are cyclic influences, and convenient for installing and the transformation to existing equipment.
Description
Technical field
The utility model relates to Fibre Optical Sensor the field of test technology more particularly to a kind of panda type polarization-preserving fiber windup-degrees
On-line measurement device.
Background technique
Polarization maintaining optical fibre, is mainly used in optical fiber current mutual inductor, optical fibre gyro, the sensors such as fibre optic hydrophone and DWDM,
The optical fiber telecommunications systems such as EDFA are a kind of with the special optical fiber type that value is widely applied.Stress birfringence polarization maintaining optical fibre master
There are bow-tie type polarization maintaining optical fibre, panda type polarization-preserving fiber and oval three kinds of polarization maintaining optical fibre of cladding type.Wherein, panda type polarization-preserving fiber
It is most widely used.
Polarization maintaining optical fibre transmits linearly polarized light, uses in fibre optical sensor based on being detected by optical coherence, realization pair
The high-acruracy survey of physical quantity is the core original for producing optical fibre gyro (inertial guidance system) and fibre optic hydrophone (Sonar system)
Material.With the continuous development of fibre optical sensor, to the stability of optical fiber property, higher requirements are also raised.Polarization maintaining optical fibre exists
Manufacture in the process of coiling cyclization, it may occur that the torsion of certain angle, this torsion can cause polarised light in optical fiber
The variation of polarization state when middle propagation, so as to cause the error of fiber sensor measuring precision.In order to improve the survey of fibre optical sensor
Accuracy of measurement, it is necessary to which the torsion of polarization maintaining optical fibre is measured.
In the prior art, Chinese patent literature CN103954240A discloses a kind of based on spectral-domain OCT system measurement polarization-maintaining
The method of optic fibre turning is imaged polarization maintaining optical fibre section to be measured using spectral coverage OCT imaging system, obtains polarization maintaining optical fibre difference
After the cross-sectional imaging of position, carried out according to windup-degree of the relative position of two stressed zone central points in imaging to polarization maintaining optical fibre
Measurement, this method is low in measuring accuracy, and needs to suspend optical fiber take-up and unwrapping wire in measurement process, is not useable for surveying online
Amount.Chinese patent literature CN103940373A discloses a kind of measurement method of outer torsional angle degree of panda type polarization-preserving fiber, the detection
Converging action of the method based on two stressed zones of panda type polarization-preserving fiber to light, detects the corresponding convergence of rays in two stressed zones
Polarization-maintaining is calculated by the vertical range between stressed zone convergent point according to the principle of geometric optics in vertical range between point
The windup-degree of optical fiber, this method need to move back and forth test platform in measurement process, it is also necessary to keep the first detector with
Second detector is in same level, and complicated operation for this method, is unfavorable for industrial application.
Utility model content
Purpose of the utility model is to overcome the above-mentioned shortcomings and provide a kind of panda type polarization-preserving fiber windup-degrees to survey online
Device is measured, without excessive human intervention operation and measurement accuracy height, high resolution can be used for drawing optical fibers or coiling
On-line real time monitoring when cyclic, while can effectively avoid optical fiber optical fiber in drawing or coiling annulation process slight
It is influenced caused by shake.
Purpose of the utility model is realized as follows:
A kind of panda type polarization-preserving fiber windup-degree on-line measurement device, panda type polarization-preserving fiber include fibre core, first answer
Power area, the second stressed zone and silica clad, it includes first laser incidence mount, second laser incidence mount, the first CCD phase
Machine, the second CCD camera, optical sensor and computer system；
Fine adjacent two sides, first CCD camera and the second CCD camera are separately positioned on and first laser incidence mount
The two sides of panda type polarization-preserving fiber corresponding with second laser incidence mount, first CCD camera and the second CCD camera difference
It is connected with computer system, the computer system is connected with optical sensor, and the optical sensor is installed on wire drawing
Equipment or on the traction wheel of ring apparatus.
A kind of panda type polarization-preserving fiber windup-degree on-line measurement device, the first laser incidence mount and second laser
Incidence mount launches the first collimated laser beam and the second collimated laser beam, first collimated laser beam and the second collimation respectively
The orthogonal thereto distribution of laser beam, and perpendicular to optical fiber axial direction direction.
A kind of panda type polarization-preserving fiber windup-degree on-line measurement device, the first laser incidence mount and second laser
The laser frequency of incidence mount transmitting is 2 ~ 50kHz.
A kind of panda type polarization-preserving fiber windup-degree on-line measurement device, first collimated laser beam and the second collimation swash
The effective measuring area that light beam is formed is 4mm*4mm.
A kind of panda type polarization-preserving fiber windup-degree on-line measurement device, the first laser incidence mount and second laser
The incident ray of incidence mount transmitting obtains the first covering interference light and the second covering interference light after silica clad, enters
It penetrates light and obtains stressed zone interference light by the first stressed zone and the second stressed zone.
Compared with prior art, the utility model has the beneficial effects that
1, the utility model by analysis collimated incident light perpendicular through after optical fiber axial direction direction interference illustration and
Light distribution, and by the method and computer Simulation calculation of ray tracing, the relative position of available stressed zone and
Windup-degree, this method measurement accuracy are higher；
2, the laser light incident system of the utility model includes two Laser emission ends, launches two beam collimated lights, two beams
The orthogonal thereto distribution of collimated light, formation survey effective measuring area is larger, greatly reduces in drawing optical fibers or turns to
Bring is shaken during ring to be influenced；
3, the utility model is easy to operate, and setting rationally, it is online can sufficiently to meet panda type polarization-preserving fiber windup-degree
The requirement of measurement, and convenient for installing and the transformation to existing equipment.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model one embodiment.
Fig. 2 is the interference illustration after the incident ray incident optical of the utility model one embodiment.
The optical fiber trace figure that Fig. 3 is the definition windup-degree of the utility model one embodiment when being 0 degree.
The surface of intensity distribution that Fig. 4 is the windup-degree of the utility model one embodiment when being 0 degree.
The optical fiber trace figure that Fig. 5 is the definition windup-degree of the utility model one embodiment when being 90 degree.
The surface of intensity distribution that Fig. 6 is the windup-degree of the utility model one embodiment when being 90 degree.
Fig. 7 is that the definition windup-degree of the utility model one embodiment is optical fiber trace figure when θ is spent.
Fig. 8 is that the windup-degree of the utility model one embodiment is surface of intensity distribution when θ is spent.
Fig. 9 is the lookup corresponding diagram of the excentric distance L and windup-degree α of two bright spots of the utility model.
Wherein:
Panda type polarization-preserving fiber 1, fibre core 2, the first stressed zone 3, the second stressed zone 4, silica clad 5, first laser are incident
Device 6, second laser incidence mount 7, the first collimated laser beam 8, the second collimated laser beam 9, the first CCD camera 10, the 2nd CCD
Camera 11, optical sensor 12, computer system 13, incident ray 14, the first covering interfere light 15, the second covering interference light
Light 17 is interfered in line 16, stressed zone.
Specific embodiment
Embodiment 1:
Referring to Fig. 1-9, the utility model relates to a kind of panda type polarization-preserving fiber windup-degree on-line measurement device, it is wrapped
Include first laser incidence mount 6, second laser incidence mount 7, the first CCD camera 10, the second CCD camera 11, optical sensor
12 and computer system 13.
Panda type polarization-preserving fiber 1 include fibre core 2, the first stressed zone 3, the second stressed zone 4 and silica clad 5, described first
Laser light incident device 6 and second laser incidence mount 7 are separately positioned on the adjacent two sides of panda type polarization-preserving fiber 1, and described first
CCD camera 10 and the second CCD camera 11 are separately positioned on corresponding with first laser incidence mount 6 and second laser incidence mount 7
Panda type polarization-preserving fiber two sides, first CCD camera 10 and the second CCD camera 11 are connected with computer system 13 respectively
Connect, the computer system 13 is connected with optical sensor 12, the optical sensor 12 be installed on wire-drawing equipment or around
On the traction wheel of ring apparatus, real-time fiber position can be learnt.
The first laser incidence mount 6 and second laser incidence mount 7 launch the first collimated laser beam 8 and respectively
Two collimated laser beams 9, first collimated laser beam 8 and the orthogonal thereto distribution of the second collimated laser beam 9, and perpendicular to optical fiber axial direction
The effective measuring area that direction, first collimated laser beam 8 and the second collimated laser beam 9 are formed is 4mm*4mm.
The laser frequency that the first laser incidence mount 6 and second laser incidence mount 7 emit is 2 ~ 50kHz.
First CCD camera 10 and the second CCD camera 11 are respectively intended to capture the first collimated laser beam 8 and the second collimation
Laser beam 9 is incident to the interference illustration formed after optical fiber.
The incident ray 14 that the first laser incidence mount 6 and second laser incidence mount 7 emit passes through silica clad 5
After obtain the first covering interference light 15 and the second covering interference light 16, incident ray 14 pass through the first stressed zone 3 and second
Stressed zone 4 obtains stressed zone interference light 17.
The measurement method of the panda type polarization-preserving fiber windup-degree on-line measurement device, comprising the following steps:
(1) panda type polarization-preserving fiber 1 is during being drawn into fine or coiling cyclization, perpendicular through first laser incidence
The measured zone that device 6 and second laser incidence mount 7 are formed；
(2) the first laser incidence mount 6 and second laser incidence mount 7 launch the first collimated laser beam 8 respectively
With the second collimated laser beam 9, the first collimated laser beam 8 and the second collimated laser beam 9 are perpendicular through optical fiber axial direction direction；
(3) first CCD cameras 10 and the second CCD camera 11 separately detect the first collimated laser beam 8 and the second collimation laser
Beam 9 is perpendicular through the interference illustration formed after optical fiber axial direction direction；
Due to the difference of the refractive index of panda type polarization-preserving fiber stressed zone and fibre core 2 and silica clad 5, work as incident ray
After light, the rear silica clad interference light and stressed zone interference light 17, corresponding CCD system of being formed will record to be formed
Interference illustration；
(4) first CCD cameras 10 and the second CCD camera 11 are connected with computer system 13 respectively, pass through ray tracing
Method obtains stressed zone relative position and the surface of intensity distribution, and two excentric distances of bright spot are L on the surface of intensity distribution；
(5) windup-degree of optical fiber is α, by searching for the lookup corresponding diagram and computer system of L- α, by the surface of intensity distribution
The excentric distance of upper two bright spots can learn the windup-degree of optical fiber；
(6) optical sensor 12 is connected to learn real-time fiber position with computer system 13, therefore available
The windup-degree of corresponding optical fiber at real time position.
The above is only the specific application examples of the utility model, do not constitute any limit to the protection scope of the utility model
System.Any technical scheme formed by adopting equivalent transformation or equivalent replacement, all fall within the utility model rights protection scope it
It is interior.
Claims (5)
1. a kind of panda type polarization-preserving fiber windup-degree on-line measurement device, panda type polarization-preserving fiber (1) includes fibre core (2),
One stressed zone (3), the second stressed zone (4) and silica clad (5), it is characterised in that: it include first laser incidence mount (6),
Second laser incidence mount (7), the first CCD camera (10), the second CCD camera (11), optical sensor (12) and department of computer science
It unites (13)；
The first laser incidence mount (6) and second laser incidence mount (7) are separately positioned on panda type polarization-preserving fiber (1) phase
Adjacent two sides, first CCD camera (10) and the second CCD camera (11) are separately positioned on and first laser incidence mount (6)
The two sides of corresponding panda type polarization-preserving fiber (1) with second laser incidence mount (7), first CCD camera (10) and second
CCD camera (11) is connected with computer system (13) respectively, and the computer system (13) is connected with optical sensor (12)
It connects, the optical sensor (12) is installed on wire-drawing equipment or on the traction wheel of ring apparatus.
2. panda type polarization-preserving fiber windup-degree on-line measurement device according to claim 1, it is characterised in that: described
One laser light incident device (6) and second laser incidence mount (7) launch the first collimated laser beam (8) respectively and the second collimation swashs
Light beam (9), first collimated laser beam (8) and the second collimated laser beam (9) orthogonal thereto distribution, and perpendicular to optical fiber axial direction side
To.
3. panda type polarization-preserving fiber windup-degree on-line measurement device according to claim 2, it is characterised in that: described
One laser light incident device (6) and the laser frequency of second laser incidence mount (7) transmitting are 2 ~ 50kHz.
4. panda type polarization-preserving fiber windup-degree on-line measurement device according to claim 2, it is characterised in that: described
The effective measuring area that one collimated laser beam (8) and the second collimated laser beam (9) are formed is 4mm*4mm.
5. panda type polarization-preserving fiber windup-degree on-line measurement device according to claim 1, it is characterised in that: described
One laser light incident device (6) and the incident ray (14) of second laser incidence mount (7) transmitting obtain after silica clad (5)
First covering interferes light (15) and the second covering interference light (16), and incident ray (14) passes through the first stressed zone (3) and the
Two stressed zones (4) obtain stressed zone interference light (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821708120.7U CN208860314U (en) | 2018-10-22 | 2018-10-22 | Panda type polarization-preserving fiber windup-degree on-line measurement device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821708120.7U CN208860314U (en) | 2018-10-22 | 2018-10-22 | Panda type polarization-preserving fiber windup-degree on-line measurement device |
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| CN208860314U true CN208860314U (en) | 2019-05-14 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307484A (en) * | 2018-10-22 | 2019-02-05 | 无锡法尔胜光电科技有限公司 | Panda type polarization-preserving fiber windup-degree on-line measurement device and its measurement method |
| CN111862560A (en) * | 2020-06-15 | 2020-10-30 | 广东博智林机器人有限公司 | Early warning device, glass fixing equipment, glass early warning system and glass early warning method |
| CN114315125A (en) * | 2021-11-25 | 2022-04-12 | 江苏法尔胜光电科技有限公司 | Preparation process of non-twist polarization maintaining optical fiber |
-
2018
- 2018-10-22 CN CN201821708120.7U patent/CN208860314U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109307484A (en) * | 2018-10-22 | 2019-02-05 | 无锡法尔胜光电科技有限公司 | Panda type polarization-preserving fiber windup-degree on-line measurement device and its measurement method |
| CN111862560A (en) * | 2020-06-15 | 2020-10-30 | 广东博智林机器人有限公司 | Early warning device, glass fixing equipment, glass early warning system and glass early warning method |
| CN111862560B (en) * | 2020-06-15 | 2021-09-14 | 广东博智林机器人有限公司 | Early warning device, glass fixing equipment, glass early warning system and glass early warning method |
| CN114315125A (en) * | 2021-11-25 | 2022-04-12 | 江苏法尔胜光电科技有限公司 | Preparation process of non-twist polarization maintaining optical fiber |
| WO2023093239A1 (en) * | 2021-11-25 | 2023-06-01 | 江苏法尔胜光电科技有限公司 | Preparation process of twist-free polarization-maintaining optical fiber |
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Effective date of registration: 20211103 Address after: 214400 No.278 Chengjiang Middle Road, high tech Zone, Jiangyin City, Wuxi City, Jiangsu Province Patentee after: JIANGSU FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. Address before: 5 / F, building B, Xingye building, sensor network university science and Technology Park, plot kgy-yf-g-11.12, Wuxi (Taihu Lake) International Science and Technology Park, 214000, Jiangsu Province Patentee before: WUXI FASTEN OPTOELECTRONICS TECHNOLOGY Co.,Ltd. |