CN107192346A - The calibrating installation and equipment of fibre strain tester - Google Patents
The calibrating installation and equipment of fibre strain tester Download PDFInfo
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- CN107192346A CN107192346A CN201710412388.XA CN201710412388A CN107192346A CN 107192346 A CN107192346 A CN 107192346A CN 201710412388 A CN201710412388 A CN 201710412388A CN 107192346 A CN107192346 A CN 107192346A
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- fiber
- length
- calibrating installation
- fibre strain
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/16—Measuring arrangements characterised by the use of optical techniques for measuring the deformation in a solid, e.g. optical strain gauge
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- Length Measuring Devices By Optical Means (AREA)
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Abstract
The invention discloses a kind of calibrating installation of fibre strain tester and equipment, the calibrating installation includes dependent variable control module, the dependent variable control module includes temperature controller and dismountable fiber reel, and the fiber reel is arranged with the standard fiber of the first length；The dependent variable control module is used to control the temperature change of the standard fiber with the first length of winding in the fiber reel by the temperature controller to change the dependent variable of the standard fiber with the first length.Small volume is obtained using the calibrating installation of embodiments of the invention, beneficial effect that is simple in construction, convenient and practical and improving Consumer's Experience.
Description
Technical field
The present invention relates to the calibrating installation and equipment of field of measuring techniques, more particularly to a kind of fibre strain tester.
Background technology
Optical fiber needs the parameter of metrology and measurement a lot, and major parameter includes luminous power, optical attenuation, attenuation coefficient, fibre ribbon
The parameters such as width, abbe number, index distribution, cutoff wavelength, mode field diameter, numerical aperture, heart footpath, circularity, concentricity.These
In parameter mainly：The intrinsic optical performance parameter of material, light-transfer characteristic parameter and physical dimension parameter etc..
The tester of current optical fiber parameter is commercially popularized already, but is due to practical optical fiber metrological standard unit
Scarcity, the domestic third-party institution does not carry out related service extensively always.For example when calibrating strain testing instrument, using mechanical stretching
Method makes metrological standard unit, and volume is big, complicated, and is not easy to curstomer's site development metering service work.
The content of the invention
The purpose of the embodiment of the present invention is to provide the calibrating installation and equipment of a kind of fibre strain tester, can effectively reduce
The volume and weight of calibrating installation, simplifies structure, and improve operating automation degree.
To achieve the above object, the embodiments of the invention provide a kind of calibrating installation of fibre strain tester, including should
Displacement variation control module, the dependent variable control module includes temperature controller and dismountable fiber reel, the fiber reel winding
There is the standard fiber of the first length；
The dependent variable control module be used for by the temperature controller control winding in the fiber reel with the
The temperature change of the standard fiber of one length is to change the dependent variable of the standard fiber with the first length.
Compared with prior art, the calibrating installation of fibre strain tester disclosed by the invention passes through temperature controller control
The temperature change of fiber reel judges the dependent variable of fiber reel with to the survey of the dependent variable parameter of fibre strain tester to change optical fiber
The technical scheme calibrated of examination function, the calibrating installation volume for solving prior art is big, complicated and be not easy to
The problem of curstomer's site carries out gage work, obtains small volume, simple in construction, convenient and practical and improve having for Consumer's Experience
Beneficial effect.
Preferably, first length is not more than 1km.
Preferably, the calibrating installation also includes the fiber grating with the second length, the light with the second length
Fine grating is the dispersion characteristics identical fiber grating with the standard fiber with the 3rd length；
Wherein, second length is not more than 20cm, and the 3rd length is not less than 10km.
Preferably, when the 3rd length is 10km, second length is 1cm~10cm.
Preferably, the calibrating installation also include fiber coupler and the first fiber optic loop, first fiber optic loop with it is described
Fiber coupler connects into closed circuit by standard fiber；
The fibre strain tester includes the first optical interface and the second optical interface, and it is defeated that the fiber coupler includes first
Enter end, the second input, the first output end and the second output end, the first input end passes through standard fiber and first light
Interface is connected, and first output end, fiber reel, the fiber grating are serially connected with second optical interface by standard fiber
Connect；
Second input is connected by standard fiber with one end of first fiber optic loop, second output
End is connected by standard fiber with the other end of first fiber optic loop.
Preferably, the calibrating installation also includes the second fiber optic loop；The fiber coupler, fiber reel, the optical fiber light
Grid, second fiber optic loop are connected in series by standard fiber.
Preferably, the fiber coupler is 2*2 fiber couplers.
Preferably, first fiber optic loop is the fiber optic loop for the standard fiber for being arranged with the 4th length, the described 4th
Length is not more than 1km；And/or, second fiber optic loop is the light for the standard fiber for being arranged with the 5th length
Fine ring, the 5th length is not more than 1km.
Preferably, the fibre strain tester is used for the one or more of parameter for testing optical fiber：Dispersion,
Loss, dependent variable, cutoff wavelength, index distribution and mode field diameter.
The embodiment of the present invention additionally provides a kind of equipment, includes the calibrating installation of described fibre strain tester.
Embodiments of the invention have the advantages that：A kind of calibration of fibre strain tester of the embodiment of the present invention
Device, by using dependent variable control module, controls the temperature change of fiber reel to judge to change optical fiber by temperature controller
The dependent variable of fiber reel is calibrated with the dependent variable parameter testing function to fibre strain tester, and this avoid use machine
Volume is big, complicated caused by the calibration of tool drawing process and is not easy to the problem of curstomer's site carries out gage work, reaches
Convenient and practical beneficial effect has been arrived, Consumer's Experience is improved；Secondly, the fiber grating mould by 20cm is less than using length is passed through
Intend the dispersion characteristics of the standard fiber not less than 10km, the standard fiber more than 10km can need not be used to be measured, reduced
Volume, weight is reduced, reduce cost and be easy to carry, use and produce in batches.
Brief description of the drawings
Fig. 1 is attachment structure schematic diagram of the calibrating installation with fibre strain tester of the embodiment of the present invention 1.
Fig. 2 is attachment structure schematic diagram of the calibrating installation with fibre strain tester of the embodiment of the present invention 2.
Fig. 3 is the 1cm fiber gratings and 10km standard fiber dispersion characteristics figures of the embodiment of the present invention 2.
Fig. 4 is attachment structure schematic diagram of the calibrating installation with fibre strain tester of the embodiment of the present invention 3.
Fig. 5 is attachment structure schematic diagram of the calibrating installation with fibre strain tester of the embodiment of the present invention 4.
Fig. 6 is attachment structure schematic diagram of the calibrating installation with fibre strain tester of the embodiment of the present invention 5.
Fig. 7 is attachment structure schematic diagram of the calibrating installation with fibre strain tester of the embodiment of the present invention 6.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clear, complete
Site preparation is described, it is clear that described embodiment is only a part of embodiment of the invention, rather than whole embodiments.It is based on
Embodiment in the present invention, it is every other that those of ordinary skill in the art are obtained under the premise of creative work is not made
Embodiment, belongs to the scope of protection of the invention.
Embodiment 1
It is the attachment structure of a kind of calibrating installation 1 and fibre strain tester 2 that the embodiment of the present invention 1 is provided referring to Fig. 1
Schematic diagram.
In the present embodiment, the calibrating installation 1 includes dependent variable control module 12, and the dependent variable control module 12 is wrapped
Temperature controller 121 and dismountable fiber reel 122 are included, the fiber reel 122 is arranged with the standard fiber of the first length；It is described
Dependent variable control module 12 is used for having first to grow by what the temperature controller 121 controlled winding in the fiber reel 122
The temperature change of the standard fiber of degree is to change the dependent variable of the standard fiber with the first length.Can reach makes calibration
Device volume diminishes, beneficial effect simple in construction and easy to use.
Specifically, in the survey for strain parameter by the dependent variable control module 12 to fibre strain tester
When amount function is calibrated, it is only necessary to which one end of the dependent variable control module 12 is passed through into standard fiber and fibre strain tester
The 2 optical interface connection for being used to launch optical signal, and connect the light for being used to receive optical signal of fibre strain tester 2
Mouth is hanging.
When carrying out specific calibration measurement, the dependent variable control module 12 controls institute by the temperature controller 121
The temperature change of the standard fiber with the 3rd length of winding in fiber reel 122 is stated to change the mark with the 3rd length
The dependent variable of quasi-fiber.The temperature controller 121 has the function of control heating and refrigeration, it is possible to achieve the automatic tune of temperature
Section, the temperature range that can be adjusted is -50 DEG C~50 DEG C, and actual temp scope is not limited to this.Wherein, fibre strain amount
Δ L/L=α Δ T, wherein α are that thermal coefficient of expansion is about 5*10- 7/ DEG C, Δ T is temperature change, so minimum strain amount is (Δ
L/L) min=α Δs Tmin, when temperature change precision is 0.1 DEG C, controllable minimum strain amount is 0.1 μ ε.And range of strain depends on
It is optical fiber switching node position in maximum strain amount, dependent variable exceedes at this | 3000 μ ε |.It is used for fibre strain tester
In the calibration process of the test function of strain parameter, temperature that temperature controller 121 controlled is altered in steps simultaneously by actual requirement
Strain testing instrument is read to provide result to complete gage work.So, can reach calibrating installation volume is diminished, it is simple in construction
And it is easy to use.
Wherein, the first length is not more than 1km.Specific length is not limited to this, can be selected according to actual conditions.
Embodiment 2
As shown in Fig. 2 being the connection knot of a kind of fibre strain tester 2 and calibrating installation 1 that the embodiment of the present invention 2 is provided
Structure schematic diagram, the calibrating installation 1 of the fibre strain tester of the present embodiment has been made further to change on the basis of embodiment 1
Enter, the improvement is that：The calibrating installation also includes the fiber grating with the second length, the light with the second length
Fine grating is the dispersion characteristics identical fiber grating with the standard fiber with the 3rd length；Wherein, second length is not
More than 20cm, the 3rd length is not less than 10km.
It should be noted that the second length wherein in the fiber grating 11 with the second length refers to fiber grating conduct
The length of one integral device.
Specifically, the calibrating installation 1 by the present embodiment to fibre strain tester 2 be used for test dispersion parameters
Test function when being calibrated, it is necessary to by one end of fiber grating 11 and fibre strain tester 2 be used for launch optical signal
Optical interface connection, the optical interface for receiving optical signal of the other end and fibre strain tester 2 is connected.And by described
, it is necessary to should by this when dependent variable control module 12 be calibrated to the measurement function for strain parameter of fibre strain tester
One end of displacement variation control module 12 is connected by standard fiber with the optical interface for being used to launch optical signal of fibre strain tester 2
, and make the optical interface for being used to receive optical signal of fibre strain tester 2 hanging.Specifically when carrying out measurement and calibration,
Flexibly selection it can be handled for connected mode, however it is not limited to the connected mode in accompanying drawing.
In the present embodiment, by using the fiber grating of no more than 20cm length, and make the fiber grating have with not
Standard fiber identical dispersion characteristics less than 10km, are so not less than by using the fiber grating simulation for being not more than 20cm
The dispersion of 10km standard fiber, in the calibration to fibre strain tester to dispersion parameters, can substitute and be not less than
10km standard fiber.The fiber grating 11 has high apodization performance and optical fibre refractivity modulation depth is deeper.The described 3rd
When length is 10km, second length is 1cm~10cm.Such as, length has and length for 1cm or 10cm fiber grating
For 10km standard fiber identical dispersion characteristics.As shown in figure 3, in 1cm fiber gratings and 10km fibre-optical dispersion performance plots, by
In the λ ＜ λ B of fiber grating Photonic Band this while for the anomalous dispersion region, to meet λ ＜ λ B relations, DFB is used in experiment
(Distributed Feedback Laser, distributed feedback laser) optical source wavelength is 1550.6nm, fiber grating Bradley
The a length of λ B of lattice wave are 1552.1nm, by the Distributed Feedback Laser pulse of fiber grating broadening with passing through 10km fibre-optical dispersions broadening one
Cause.It is thus possible to greatly reduce the volume of the calibrating installation, reduce weight and cost, and be easy to carry, using and batch
Production, and it is easy to curstomer's site to carry out metering service work.For the selection of fiber grating length, it is not limited to here
This, can be selected according to actual conditions.
Embodiment 3
The present embodiment has made further improvement on the basis of embodiment 1, thes improvement is that：As shown in figure 4, described
Calibrating installation 1 also includes the fiber optic loop 14 of fiber coupler 13 and first, first fiber optic loop 14 and the fiber coupler 13
Closed circuit is connected into by standard fiber.The fibre strain tester 2 includes the first optical interface 21 and the second optical interface 22,
The fiber coupler 13 includes first input end 131, the second input 132, the first output end 133 and the second output end 134,
The first input end 131 is connected by standard fiber with first optical interface 21, first output end 131, the light
Fine grating 11 is connected in series with second optical interface 22 by standard fiber；Second input 132 passes through standard fiber
It is connected with one end of first fiber optic loop 14, second output end 134 passes through standard fiber and first fiber optic loop 14
The other end connection.
In the present embodiment, when fibre strain tester 2 is by the second 22 vacantly i.e. open circuit of optical interface, connect by the first light
Mouth 21 launches optical signals, and now, the optical signal of transmitting is entered by the first input end 131 of fiber coupler 13, and in optical fiber
The other end of coupler 13 separates two ways of optical signals and exported respectively from the first output end 133 and the second output end 134, passes through second
The optical signal that output end 134 is exported after the first fiber optic loop 14 by entering back into fiber coupler 13 so as to realize that optical signal exists
Continuous decay in the closed circuit of fiber coupler and the first fiber optic loop composition, so that the multistage loss of analog optical signal.Can
The test function of the loss parameter of fibre strain tester 2 is calibrated with realizing.
The fiber coupler is 2*2 fiber couplers, and first fiber optic loop is arranged with the standard fiber of the 4th length,
4th length is not more than 1km, such as can select 1km, and the selection of specific length is not limited to this, can be according to reality
Situation is selected.
Embodiment 4
As shown in figure 5, the present embodiment has made further improvement on the basis of embodiment 2, the improvement is that：It is described
Calibrating installation 1 also includes the fiber optic loop 14 of fiber coupler 13 and first, first fiber optic loop 14 and the fiber coupler 13
Closed circuit is connected into by standard fiber.First output end 131, fiber reel 122, the optical interface of the fiber grating 11 and second
22 are connected in series by standard fiber；Second input 132 is connected by standard fiber with one end of the first fiber optic loop 14, and second
Output end 134 is connected by standard fiber with the other end of the first fiber optic loop 14.
In the present embodiment, when fibre strain tester 2 connects the first optical interface 21 and the second optical interface 22, first is passed through
Optical interface 21 launches optical signal, and optical signal is received by the second optical interface, can be used for test color to fibre strain tester
The test function for dissipating parameter is calibrated.
In addition, when fibre strain tester 2 is by the second 22 vacantly i.e. open circuit of optical interface, being launched by the first optical interface 21
Optical signal, now, the optical signal of transmitting are entered by the first input end 131 of fiber coupler 13, and in fiber coupler 13
The other end separate two ways of optical signals and exported respectively from the first output end 133 and the second output end 134, pass through the second output end
The optical signal of 134 outputs after the first fiber optic loop 14 by entering back into fiber coupler 13 so as to realize optical signal in optical fiber coupling
Continuous decay in the closed circuit of clutch and the first fiber optic loop composition, so that the multichannel loss of Multipexer optical signal.Can be with
Realize and the test function of the loss parameter of fibre strain tester 2 is calibrated.It is also possible to pass through temperature controller
The temperature change of 121 control fiber reels 122 is used to carry out school to the measurement function for strain parameter of fibre strain tester
It is accurate.To reach while what the measurement function for the measuring strain parameter to fibre strain tester and loss parameter was calibrated
Purpose.
Embodiment 5
As shown in fig. 6, the present embodiment has made further improvement on the basis of embodiment 3, the improvement is that：It is described
Calibrating installation 1 also includes the second fiber optic loop 15.The fiber coupler 13, the fiber grating 11, second fiber optic loop 15
It is connected in series by standard fiber.
In the present embodiment, by increasing by the second fiber optic loop 15 to increase the range of the metering of the calibrating installation.Wherein,
Two fiber optic loops 15 are the fiber optic loop for the standard fiber for being arranged with the 5th length, and the 5th length is not more than 1km, such as this second
The length of fiber optic loop 15 can be 1km, and the selection for length is not limited to this, can be according to actual conditions depending on.
Embodiment 6
As shown in fig. 7, the present embodiment has made further improvement on the basis of embodiment 4, the improvement is that：It is described
Calibrating installation 1 also includes the second fiber optic loop 15.The fiber coupler 13, fiber reel 122, the fiber grating 11, described
Two fiber optic loops 15 are connected in series by standard fiber.
In the present embodiment, by increasing by the second fiber optic loop 15 to increase the range of the metering of the calibrating installation.Wherein,
Two fiber optic loops 15 are the fiber optic loop for the standard fiber for being arranged with the 5th length, and the 5th length is not more than 1km, such as this second
The length of fiber optic loop 15 can be 1km, and the selection for length is not limited to this, can be according to actual conditions depending on.
In addition, the fibre strain tester 2 is used for the one or more of parameter for testing optical fiber：Dispersion, loss, should
Variable, cutoff wavelength, index distribution and mode field diameter.
In another embodiment of the invention, also disclose in a kind of equipment, including 1~embodiment of above-described embodiment 6 and appoint
The calibrating installation of fibre strain tester described in one embodiment.
The calibrating installation and equipment of the fibre strain tester of the embodiment of the present invention, by using dependent variable control module,
The temperature change of fiber reel is controlled to judge the dependent variable of fiber reel to change optical fiber to be surveyed to fibre strain by temperature controller
Examination instrument dependent variable parameter testing function calibrated, this avoid using mechanical stretching method calibration caused by volume greatly,
It is complicated and be not easy to curstomer's site carry out gage work the problem of, reached convenient and practical beneficial effect, lifted
Consumer's Experience；Secondly, the color of standard fiber of the fiber grating simulation not less than 10km by 20cm is less than using length is passed through
Characteristic is dissipated, the standard fiber more than 10km can need not be used to be measured, reduce volume, reduce weight, reduce into
This and be easy to carry, use and produce in batches.
Described above is the preferred embodiment of the present invention, it is noted that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvements and modifications can also be made, these improvements and modifications are also considered as
Protection scope of the present invention.
Claims (10)
1. a kind of calibrating installation of fibre strain tester, it is characterised in that including dependent variable control module, the dependent variable control
Molding block includes temperature controller and dismountable fiber reel, and the fiber reel is arranged with the standard fiber of the first length；
The dependent variable control module is used for having first to grow by what the temperature controller controlled winding in the fiber reel
The temperature change of the standard fiber of degree is to change the dependent variable of the standard fiber with the first length.
2. the calibrating installation of fibre strain tester as claimed in claim 1, it is characterised in that first length is not more than
1km。
3. the calibrating installation of fibre strain tester as claimed in claim 1, it is characterised in that the calibrating installation also includes
Fiber grating with the second length, it is described there is the second length fiber grating be and the standard fiber with the 3rd length
Dispersion characteristics identical fiber grating；
Wherein, second length is not more than 20cm, and the 3rd length is not less than 10km.
4. the calibrating installation of fibre strain tester as claimed in claim 3, it is characterised in that be in the 3rd length
During 10km, second length is 1cm~10cm.
5. the calibrating installation of the fibre strain tester as described in claim 1 or 3, it is characterised in that the calibrating installation is also
Including fiber coupler and the first fiber optic loop, first fiber optic loop is connected into the fiber coupler by standard fiber closes
Cyclization road；
The fibre strain tester includes the first optical interface and the second optical interface, and the fiber coupler includes the first input
End, the second input, the first output end and the second output end, the first input end are connect by standard fiber with first light
Mouth connection, first output end, fiber reel, the fiber grating are serially connected with second optical interface by standard fiber
Connect；
Second input is connected by standard fiber with one end of first fiber optic loop, and second output end passes through mark
Quasi-fiber is connected with the other end of first fiber optic loop.
6. the calibrating installation of fibre strain tester as claimed in claim 5, it is characterised in that the calibrating installation also includes
Second fiber optic loop；The fiber coupler, fiber reel, the fiber grating, second fiber optic loop are serial by standard fiber
Connection.
7. the calibrating installation of fibre strain tester as claimed in claim 5, it is characterised in that the fiber coupler is 2*
2 fiber couplers.
8. the calibrating installation of fibre strain tester as claimed in claim 6, it is characterised in that first fiber optic loop be around
The fiber optic loop of standard fiber provided with the 4th length, the 4th length is not more than 1km；And/or, second fiber optic loop be around
The fiber optic loop of standard fiber provided with the 5th length, the 5th length is not more than 1km.
9. the calibrating installation of the fibre strain tester as shown in claim 6, it is characterised in that the fibre strain tester
One or more of parameter for testing optical fiber：Dispersion, loss, dependent variable, cutoff wavelength, index distribution and mould field are straight
Footpath.
10. a kind of equipment, it is characterised in that include the school of the fibre strain tester as described in claim 1-9 any one
Standard apparatus.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412388.XA CN107192346B (en) | 2017-06-02 | 2017-06-02 | Calibration device and equipment of optical fiber strain tester |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710412388.XA CN107192346B (en) | 2017-06-02 | 2017-06-02 | Calibration device and equipment of optical fiber strain tester |
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| Publication Number | Publication Date |
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| CN107192346A true CN107192346A (en) | 2017-09-22 |
| CN107192346B CN107192346B (en) | 2022-03-08 |
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| CN201710412388.XA Active CN107192346B (en) | 2017-06-02 | 2017-06-02 | Calibration device and equipment of optical fiber strain tester |
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| JPH11101617A (en) * | 1997-09-26 | 1999-04-13 | Nkk Corp | Structure strain monitoring method and its monitoring device |
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2017
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| JPH11101617A (en) * | 1997-09-26 | 1999-04-13 | Nkk Corp | Structure strain monitoring method and its monitoring device |
| CN1988420A (en) * | 2006-12-14 | 2007-06-27 | 长飞光纤光缆有限公司 | Method for detecting optic fiber polarization mould dispersion |
| US20180195856A1 (en) * | 2014-11-11 | 2018-07-12 | Luna Innovations Incorporated | Optical fiber and method and apparatus for accurate fiber optic sensing under multiple stimuli |
| CN105115533A (en) * | 2015-07-30 | 2015-12-02 | 中国电子科技集团公司第四十一研究所 | Fiber grating demodulator calibration transfer member and calibration method |
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| CN107192346B (en) | 2022-03-08 |
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Address after: No. 8 Qishan Road, Shiqi Town, Panyu District, Guangzhou City, Guangdong Province, 510000, 150 Patentee after: Radio and TV Measurement and Testing Group Co.,Ltd. Address before: 510630 Xiping Road, Whampoa Road, Tianhe District, Guangzhou, Guangdong 163 Patentee before: GUANGZHOU GRG METROLOGY & TEST Co.,Ltd. |
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