CN109343068A - A kind of measuring device and measuring method of space length - Google Patents
A kind of measuring device and measuring method of space length Download PDFInfo
- Publication number
- CN109343068A CN109343068A CN201811524975.9A CN201811524975A CN109343068A CN 109343068 A CN109343068 A CN 109343068A CN 201811524975 A CN201811524975 A CN 201811524975A CN 109343068 A CN109343068 A CN 109343068A
- Authority
- CN
- China
- Prior art keywords
- optical
- laser
- detection
- port
- circulator
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title abstract description 7
- 230000003287 optical effect Effects 0.000 claims abstract description 149
- 238000001514 detection method Methods 0.000 claims abstract description 70
- 239000013307 optical fiber Substances 0.000 claims abstract description 39
- 239000006185 dispersion Substances 0.000 claims abstract description 34
- 238000001228 spectrum Methods 0.000 claims abstract description 34
- 238000005259 measurement Methods 0.000 claims abstract description 21
- 238000012545 processing Methods 0.000 claims abstract description 18
- 238000000691 measurement method Methods 0.000 claims abstract description 14
- 230000009466 transformation Effects 0.000 claims abstract description 12
- 230000003595 spectral effect Effects 0.000 claims description 14
- 239000000835 fiber Substances 0.000 claims description 9
- 238000005070 sampling Methods 0.000 claims description 9
- 238000012360 testing method Methods 0.000 claims description 6
- 230000008859 change Effects 0.000 claims description 2
- 230000001427 coherent effect Effects 0.000 abstract description 2
- 238000013461 design Methods 0.000 description 3
- 230000000243 photosynthetic effect Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000006855 networking Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
- G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
- G01S17/06—Systems determining position data of a target
- G01S17/08—Systems determining position data of a target for measuring distance only
Abstract
The invention discloses a kind of measuring device and measuring method of space length, the super continuous spectrums laser of this measuring device accesses optical combiner through reference optical fiber through the reference laser that optical splitter separates, detection laser emits through optical circulator to the detection optical transmitting set of space length L, the light being reflected back is through circulator to optical combiner, each wavelength laser after grating dispersion device dispersion reaches CCD waveguide array detector, and the output of CCD connects data processing unit.The coherent laser beam that this measurement method generates for super continuous spectrums laser, dispersion beam splitting, CCD waveguide array detector sample it to obtain wavelength-strength signal, and Fourier transformation obtains spatial-intensity relationship, realizes the measurement of high-precision space length.High-precision linear measure longimetry can be realized without wavelength tuning in the present invention, and measurement accuracy is high, and realization principle is simple.
Description
Technical field
The present invention relates to a kind of length measurement technique fields, and in particular to a kind of space length measuring device and measurement side
Method.
Background technique
Length carries out high-precision measurement as one of seven fundamental physical quantities, to it, the basic exploratory development to forward position
Application with advanced technology has vital meaning.With industrial technologies such as aerospace, car networking, laser radar ranges
Fast development, the demand to space length accurate measurement is also more more and more urgent." space length " refers to that tested media is rolled over
The length that rate is surveyed by 1 (such as vacuum or air), that is, the distance that laser transmits in air are penetrated, is different from light in other Jie
Light path in matter.
It is at present laser light splitting, the detection through certain space distance L with the method for common laser of narrowband measurement space length
Light and reference light are relevant, and both CCD sampled measurements phase interference state obtains space length L.But due to laser of narrowband spectrum
Very narrow, the data sample of CCD sampling is limited, is unable to get high-precision resolution ratio.In addition common laser of narrowband spectrum is uneven,
The error of CCD sampled data is larger, and the accuracy of measurement is not high, and current highest measurement accuracy is only 20 μm.
A kind of space length measurement method of more high measurement accuracy is needed at present.
Summary of the invention
The purpose of the present invention is designing a kind of space length measuring device, using super continuous spectrums laser, through optical splitter point
Reference laser and detection laser, reference laser access optical combiner through reference optical fiber out, and detection laser is accessed through optical circulator and examined
Survey optical transmitting set, the detection reflective optical system of transmitting to distance L；The light being reflected back is through circulator to optical combiner, after closing beam interferometer
Into grating dispersion device, each wavelength laser after dispersion completely arrives at the detection window of ccd array detector, CCD waveguide array
The output end of detector accesses data processing unit through electrical signal line.
It is another object of the present invention to design a kind of space length measurement method, space length designed by the invention is surveyed
Device is measured, reference laser accesses optical combiner through reference optical fiber；Laser is detected through optical circulator, detection optical transmitting set, detection light
Reflector becomes reception laser and also accesses optical combiner, closes beam, multi-wavelength light interference, interference in the two-beam of optical combiner input
Laser is output to grating dispersion device, multi-wavelength light dispersion beam splitting, the waveguide array detector for being irradiated to CCD, and CCD waveguide array is visited
Device to be surveyed it is sampled to obtain wavelength-strength signal, Fourier transformation obtains spatial-intensity relationship, realize the measurement of space length,
With measurement accuracy height, the simple feature of realization principle.
A kind of space length measuring device that the present invention designs, including super continuous spectrums laser source, optical splitter, reference light
Fibre, optical circulator, detection optical transmitting set, detection reflective optical system, optical combiner, grating dispersion device, CCD waveguide array detector and
Data processing unit.
The super continuous spectrums laser source connects optical splitter, the reference of the output port output of optical splitter through optical fiber
Laser connects an input port of optical combiner, the detection laser of the another output mouth output of optical splitter through reference optical fiber
The first port of optical circulator is connect through optical fiber, the second port of optical circulator is through optical fiber connecting detection optical transmitting set, detection light hair
It is atmosphere or vacuum, the two distance L between emitter and detection reflective optical system；The third port of optical circulator connects photosynthetic through optical fiber
Another input port of road device, two-way inputs photosynthetic beam interferometer in optical combiner, and the interference laser of optical combiner output connects
Enter grating dispersion device, the detection window of the output end face CCD waveguide array detector of grating dispersion device, grating dispersion device dispersion
Each wavelength laser afterwards completely arrives at the detection window of ccd array detector, and the output end of CCD waveguide array detector is through telecommunications
Number line accesses data processing unit.
The broad band laser spectral centroid wavelength that the super continuous spectrums laser source generates is 1525nm~1625nm, spectral width
For 0.8nm~80nm.
The detection reflective optical system is the reflector that frequency domain reflection is carried out to broad band laser.
A kind of space length measurement method that the present invention designs, the space length measuring device designed using the present invention.Institute
The broad band laser access optical splitter that super continuous spectrums laser source generates steady and continuous is stated, is divided into reference laser and detection swashs
Light.The broad band laser of the steady and continuous refers to spectral flatness better than 7dB/nm, and output power variation is less than or waits per minute
In the broad band laser of 0.5dB.Reference laser accesses optical combiner through reference optical fiber；Detection laser enters the first end of optical circulator
Mouthful, it is output to detection optical transmitting set through second port, detection optical transmitting set will test laser orientation and emit to form transmitting laser, examines
The space length surveying optical transmitting set and detecting between reflective optical system is L, and the detection reflective optical system will test optical transmitting set transmitting
Transmitting laser reflection return detection optical transmitting set, formed reflection laser.Detection light transmitter receipt reflection laser, which makes, to be connect
Laser is received, and is sent into the second port of optical circulator, the reception laser that second port inputs is sent to third port by optical circulator
It is output to optical combiner.It is exported in the optical combiner by the reference laser of reference optical fiber and optical circulator third port
It receives laser and carries out conjunction beam interferometer, form interference laser and be output to grating dispersion device.The grating dispersion device is defeated by optical combiner
Interference laser out carries out spatial dispersion, is split by different wave length, the light distribution for forming different wave length is different in space
The spatial beam of position, the spatial beam are irradiated on CCD waveguide array detector, and CCD waveguide array detector is to different waves
The strength signal of long light is sampled, and wavelength-strength signal is obtained, this signal is sent to data processing unit.The CCD wavelength
The wavelength sampling interval of detector array is 0.2pm~2pm.
It is indicated by the intensity of the reference laser of reference optical fiber are as follows:
The reception laser intensity of circulator third port output indicates are as follows:
λ in formulaiIndicate that some wavelength of super continuous spectrums laser, that is, CCD waveguide array detector swash super continuous spectrums
Some sampling wavelength in light series of samples；
N indicates optical fibre refractivity；
Exp { } indicates exponential function；
LTIndicate the fiber lengths for reaching optical combiner through reference optical fiber by optical splitter；
LRIt indicates by optical splitter through circulator first port, circulator second port to optical transmitting set, again by light emitting
Device returns to circulator second port, circulator third port, reaches the fiber lengths of optical combiner；
Its nLTIndicate the light path of the reference laser through reference optical fiber；
(nLR+ 2L) indicate that through circulator first port, arrival optical transmitting set, it is anti-to reach light through space length L for detection laser
Emitter, then optical transmitting set is returned through space length L, the second port through optical circulator to third port and it is output to photosynthetic road
The sum of laser light path of device；
Wavelength-strength signal indicates are as follows:
Reference optical fiber is adjusted, nL is madeT=nLR, then:
The data processing unit, the wavelength that CCD waveguide array detector is sent-strength signal carry out Fourier
Transformation, by the relationship P (λ between wavelength-intensityi), the relationship K (x being changed between spatial-intensityi),
K(xi)=FFT { P (λi)}
=δ (xi-0)+δ(xi-2L)
Wherein FFT { } indicates Fourier transformation, and δ () indicates delta function；
It is obtained from above formula, in xiAt=0, K (x0) there is a peak value, indicate detection light emitter position；In xiAt=L,
K(xL) also there is a peak value, indicate detection light reflector locations, xL-x0=L obtains measured space length.
The wavelength that the data processing unit sends CCD waveguide array detector-strength signal carries out Fourier
Transformation, by wavelength-intensity relationship, be changed into spatial-intensity relationship, obtain detection optical transmitting set and detect reflective optical system it
Between space length value.
Compared with prior art, a kind of space length measuring device and measuring method of the present invention have the advantage that 1, sheet
The scheme that invention provides is based on super continuous spectrums laser and CCD detection carries out space length measurement, and super continuous spectrums laser generates light
Spectral width reaches the coherent laser beam of tens nanometer, and high-precision linear measure longimetry can be realized without wavelength tuning；Connect if 2, surpassing
The central wavelength of continuous spectrum laser is 1550nm, and spectral width 80nm, measurement accuracy resolution ratio can reach 15 μm, than existing skill
The measurement accuracy of art is about high by 25%；3, using existing optical instrument, it is easy to accomplish；Suitable for aerospace, car networking, laser
The high-acruracy survey to space length such as radar range finding.
Detailed description of the invention
Fig. 1 is this space length measuring device example structure block diagram；
Fig. 2 is gained wavelength-strength relationship curve graph in this space length measurement method embodiment；
Fig. 3 is gained spatial-intensity graph of relation in this space length measurement method embodiment；
Fig. 4 is this space length measurement method embodiment intermediate-resolution schematic diagram.
Specific embodiment
Further to illustrate the present invention to reach the technical means and efficacy that predetermined purpose is taken, below in conjunction with attached
Figure, the present invention is described in detail as after.
This space length measuring device embodiment is as shown in Figure 1, include super continuous spectrums laser source, optical splitter, reference light
Fibre, optical circulator, detection optical transmitting set, detection reflective optical system, optical combiner, grating dispersion device, CCD waveguide array detector and
Data processing unit.Solid line connecting line indicates optical fiber connection in figure, and dashed connection line indicates the light connects in atmosphere, click and sweep connection
Line indicates electric signal connection.
The broad band laser spectral wavelength ranges that this example super continuous spectrums laser source generates are 1550nm ± 40nm.
This example super continuous spectrums laser source connects optical splitter, the reference of the output port output of optical splitter through optical fiber
Laser connects an input port of optical combiner, the detection laser of the another output mouth output of optical splitter through reference optical fiber
The first port of optical circulator is connect 1. through optical fiber, and the second port of optical circulator is 2. through optical fiber connecting detection optical transmitting set, this example
Detecting between optical transmitting set and detection reflective optical system is atmosphere, the two distance L；This example detect reflective optical system be to broad band laser into
The reflector of line frequency domain reflection.3. the third port of optical circulator connects grating dispersion device, the output of grating dispersion device through optical fiber
Rectify the detection window to CCD waveguide array detector, be therebetween also atmosphere, each wavelength after grating dispersion device dispersion swashs
Light completely arrives at the detection window of ccd array detector, and the output end of CCD waveguide array detector accesses data through electrical signal line
Processing unit.
Space length measurement method embodiment
This space length measurement method embodiment carries out in above-mentioned space length measuring device embodiment.This example is super to be connected
Continuous spectrum laser source generates spectral flatness and is less than 7dB/nm, and output power variation is less than the broad band laser of 0.5dB, center per minute
Wavelength X0=1550nm, spectral width △ λ=80nm.
The broad band laser that super continuous spectrums laser source generates accesses the optical splitter, is divided into reference laser and detection laser.
Reference laser accesses optical combiner through reference optical fiber；1. detection laser enters the first port of optical circulator, 2. through second port
Be output to detection optical transmitting set, detection optical transmitting set will test laser orientation and emit to form transmitting laser, detection optical transmitting set with
Detecting the space length between reflective optical system is L, and the transmitting laser that the detection reflective optical system will test optical transmitting set transmitting is anti-
It is emitted back towards detection optical transmitting set, forms reflection laser.Detection light transmitter receipt reflection laser makes reception laser, and is sent into
2., 2. reception laser that second port inputs is sent to third port and is 3. output to light the second port of optical circulator by optical circulator
Combiner.By the reception laser of the reference laser of reference optical fiber and the output of optical circulator third port in the optical combiner
Conjunction beam interferometer is carried out, interference laser is formed and is output to grating dispersion device.The interference that the grating dispersion device exports optical combiner
Laser carries out spatial dispersion, is split by different wave length, forms sky of the light distribution in the different position in space of different wave length
Between light beam, which is irradiated on CCD waveguide array detector, and CCD waveguide array detector is to the strong of different wavelengths of light
Degree signal is sampled, and obtains wavelength-strength signal, this signal is sent to data processing unit.
The wavelength that the data processing unit sends CCD waveguide array detector-strength signal carries out Fourier
Transformation, by wavelength-intensity relationship, be changed into spatial-intensity relationship, obtain detection optical transmitting set and detect reflective optical system it
Between space length value.
It is indicated by the intensity of the reference laser of reference optical fiber are as follows:
3. reception laser intensity that circulator third port exports indicates are as follows:
λ in formulaiIndicate that some wavelength of super continuous spectrums laser, that is, CCD waveguide array detector swash super continuous spectrums
Some sampling wavelength in light series of samples；According to the spectrum width of super continuous spectrums laser and wavelength sampling interval, determine multiple discrete
Value λiNumber, this example wavelength sampling interval 1pm.
N indicates optical fibre refractivity；
Exp { } indicates exponential function；
LTIndicate the fiber lengths for reaching optical combiner through reference optical fiber by optical splitter；
LRIndicate by optical splitter through circulator first port 1., circulator second port is 2. to optical transmitting set, again by light
Transmitter return circulator second port 2., circulator third port 3., reach the fiber lengths of optical combiner；
Its nLTIndicate the light path of the reference laser through reference optical fiber,
(nLR+ 2L) indicate 1. detection laser, reaches optical transmitting set, becomes transmitting laser, through sky through circulator first port
Between length L reach reflective optical system, formed reflection laser, then through space length L return optical transmitting set become receive laser, through the ring of light
3. and the sum of the laser light path for being output to optical combiner 2. the second port of shape device arrives third port.
The interference laser that this example grating dispersion device exports optical combiner carries out spatial dispersion, by the light distribution of different wave length
The position different to space, and be irradiated on CCD waveguide array detector.
This example CCD waveguide array detector receives the spatial beam of the different wave length of grating dispersion device dispersion, different wave length
The intensity of light is different, that is, forms wavelength-strength signal, and send data processing unit for this signal.This example wavelength-intensity
Relation curve is as shown in Fig. 2, the abscissa of Fig. 2 is wavelength Xi, unit nm；Ordinate is that CCD waveguide array detector obtains
Light intensity P (λi), unit is normalizated unit (a.u).
Wavelength-strength signal indicates are as follows:
Reference optical fiber is adjusted, nL is madeT=nLR=L0, then:
That is:
The data processing unit, the wavelength that CCD waveguide array detector is sent-strength signal carry out Fourier
Transformation, by the relationship P (λ between wavelength-intensityi), the relationship K (x being changed between spatial-intensityi), to realize detection
The measurement of space length L between optical transmitting set and detection reflective optical system.Resulting spatial-intensity curve after this example Fourier transformation
As shown in figure 3, the abscissa of Fig. 3 is spatial position xi, unit m；Ordinate is the intensity K (x of the light after Fourier transformationi),
Unit is normalizated unit (a.u).
Transformation of the wavelength-between intensity and spatial-intensity is expressed as:
K(xi)=FFT { P (λi)}
=δ (xi-0)+δ(xi-2L)
Wherein FFT { } indicates Fourier transformation, and δ () indicates delta function, wherein xiThe point of representation space coordinate, i
=1,2,3 ....It is obtained from above formula, in xiAt=0, K (x0) there is a peak value, indicate detection light emitter position；In xi=L
Place, K (xL) also there is a peak value, indicate detection light reflector locations, the distance between two peak values xL-x0=L is to get to being surveyed
The space length of amount.
As shown in figure 4, ordinate is the intensity K (x of light in schemingi), unit is normalizated unit (a.u), abscissa xi-
L, unit be μm, to explicitly indicate that out space length Measurement Resolution Δ x.
Space length Measurement Resolution are as follows:
λ in formula0Indicate the central wavelength of super continuous spectrums laser, △ λ is the spectral width of super continuous spectrums laser.This example is super to be connected
The central wavelength of continuous spectrum laser is 1550nm, and spectral width 80nm, the space length L of this example measurement are 0.5m, and measurement is differentiated
Rate reaches 15 μm, and final measured result is 0.5003507m, error 0.07%.
Above-described embodiment is only further described the purpose of the present invention, technical scheme and beneficial effects specific
A example, present invention is not limited to this.All any modifications made within the scope of disclosure of the invention, change equivalent replacement
Into etc., it is all included in the scope of protection of the present invention.
Claims (7)
1. a kind of space length measuring device, including super continuous spectrums laser source, optical splitter, reference optical fiber, optical circulator, detection
Optical transmitting set, detection reflective optical system, optical combiner, grating dispersion device, CCD waveguide array detector and data processing unit；
The super continuous spectrums laser source connects optical splitter, the reference laser of the output port output of optical splitter through optical fiber
An input port of optical combiner is connect through reference optical fiber, the detection laser of the another output mouth output of optical splitter is through light
Fibre connects the first port of optical circulator, and the second port of optical circulator detects optical transmitting set through optical fiber connecting detection optical transmitting set
It is atmosphere or vacuum, the two distance L between detection reflective optical system；The third port of optical circulator connects grating dispersion through optical fiber
Device, the detection window of the output end face CCD waveguide array detector of grating dispersion device, each wavelength after grating dispersion device dispersion
Laser completely arrives at the detection window of ccd array detector, and the output end of CCD waveguide array detector accesses number through electrical signal line
According to processing unit.
2. space length measuring device according to claim 1, it is characterised in that:
The broad band laser spectral centroid wave-length coverage that the super continuous spectrums laser source generates is 1525nm~1625nm, spectral width
For 0.8nm~80nm.
3. space length measuring device according to claim 1, it is characterised in that:
The detection reflective optical system is the reflector that frequency domain reflection is carried out to broad band laser.
4. a kind of space length measurement method uses according to claim 1 to space length measuring device described in 3, special
Sign is:
The super continuous spectrums laser source generates spectral flatness and is less than or equal to per minute better than 7dB/nm, output power variation
The broad band laser of 0.5dB accesses the optical splitter, is divided into reference laser and detection laser；Reference laser is accessed through reference optical fiber
Optical combiner；Detection laser enters the first port of optical circulator, is output to detection optical transmitting set, detection light hair through second port
Emitter will test laser orientation and emit to form transmitting laser, and the space length for detecting optical transmitting set and detecting between reflective optical system is
L, the transmitting laser reflection that the detection reflective optical system will test optical transmitting set transmitting return detection optical transmitting set, form reflection and swash
Light；Detection light transmitter receipt reflection laser makes reception laser, and is sent into the second port of optical circulator, optical circulator
The reception laser that second port inputs is sent to third port and is output to optical combiner；Pass through reference light in the optical combiner
Fine reference laser and the reception laser of optical circulator third port output carry out conjunction beam interferometer, form interference laser and are output to light
Grid dispersor；The interference laser that the grating dispersion device exports optical combiner carries out spatial dispersion, is divided by different wave length
Beam, forms spatial beam of the light distribution in the different position in space of different wave length, which is irradiated to CCD waveguide array
On detector, CCD waveguide array detector samples the strength signal of different wavelengths of light, obtains wavelength-strength signal, this
Signal is sent to data processing unit；
The wavelength that the data processing unit sends CCD waveguide array detector-strength signal carries out Fourier transformation,
By wavelength-intensity relationship, it is changed into spatial-intensity relationship, obtains detection optical transmitting set and detects and is empty between reflective optical system
Between length value.
5. space length measurement method according to claim 4, it is characterised in that:
The wavelength sampling interval of the CCD waveguide array detector is 0.2pm~2pm.
6. space length measurement method according to claim 4, it is characterised in that:
It is indicated by the intensity of the reference laser of reference optical fiber are as follows:
The reception laser intensity of circulator third port output indicates are as follows:
λ in formulaiIndicate some wavelength of super continuous spectrums laser, that is, CCD waveguide array detector is to super continuous spectrums laser array
Some sampling wavelength in sampling；
N indicates optical fibre refractivity；
Exp { } indicates exponential function；
LTIndicate the fiber lengths for reaching optical combiner through reference optical fiber by optical splitter；
LRIndicate by optical splitter through circulator first port 1., circulator second port is 2. to optical transmitting set, again by optical transmitting set
Return circulator second port 2., circulator third port 3., reach the fiber lengths of optical combiner；
Its nLTIndicate the light path of the reference laser through reference optical fiber；
(nLR+ 2L) indicate that detection laser through circulator first port, arrival optical transmitting set, reaches reflective optical system through space length L,
Optical transmitting set is returned through space length L again, the second port through optical circulator to third port and is output to optical combiner
The sum of laser light path；
Wavelength-strength signal indicates are as follows:
Reference optical fiber is adjusted, nL is madeT=nLR, then:
The data processing unit, the wavelength that CCD waveguide array detector is sent-strength signal carry out Fourier's change
It changes, by the relationship P (λ between wavelength-intensityi), the relationship K (x being changed between spatial-intensityi),
K(xi)=FFT { P (λi)}
=δ (xi-0)+δ(xi-2L)
Wherein FFT { } indicates Fourier transformation, and δ () indicates delta function；
It is obtained from above formula, in xiAt=0, K (x0) there is a peak value, indicate detection light emitter position；In xiAt=L, K (xL)
Also there is a peak value, indicate detection light reflector locations, xL-x0=L obtains measured space length.
7. space length measurement method according to claim 4, it is characterised in that:
Space length Measurement Resolution are as follows:
λ in formula0Indicate the central wavelength of super continuous spectrums laser, △ λ is the spectral width of super continuous spectrums laser.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811524975.9A CN109343068A (en) | 2018-12-13 | 2018-12-13 | A kind of measuring device and measuring method of space length |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811524975.9A CN109343068A (en) | 2018-12-13 | 2018-12-13 | A kind of measuring device and measuring method of space length |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109343068A true CN109343068A (en) | 2019-02-15 |
Family
ID=65304391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811524975.9A Pending CN109343068A (en) | 2018-12-13 | 2018-12-13 | A kind of measuring device and measuring method of space length |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109343068A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152591A (en) * | 2021-12-03 | 2022-03-08 | 中国电子科技集团公司第三十四研究所 | Position and wavelength demodulation system and method for cascade fiber grating sensing array |
Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0567701A1 (en) * | 1992-04-27 | 1993-11-03 | Canon Kabushiki Kaisha | Inspection method and apparatus |
| US20080018907A1 (en) * | 2006-07-18 | 2008-01-24 | Rene Beaulieu | Optical apparatus and method for distance measuring |
| CN102607720A (en) * | 2012-03-02 | 2012-07-25 | 北京航空航天大学 | Method and system for measuring optical distance |
| CN102628799A (en) * | 2012-04-25 | 2012-08-08 | 中国科学院上海光学精密机械研究所 | Method and system of time-domain optical coherence tomography without depth scan |
| CN102656420A (en) * | 2009-07-23 | 2012-09-05 | 拉夫伯勒大学 | Apparatus for the absolute measurement of two dimensional optical path distributions using interferometry |
| CN103929250A (en) * | 2014-04-28 | 2014-07-16 | 中国电子科技集团公司第三十四研究所 | Optical fiber phase compensator and use method thereof |
| CN104185353A (en) * | 2014-09-05 | 2014-12-03 | 中国人民解放军陆军军官学院 | Fusion reactor plasma density and temperature diagnosing method based on Thomson scattering weak coherent technique |
| CN104483022A (en) * | 2014-11-25 | 2015-04-01 | 北京工业大学 | Fourier conversion spectrum instrument based on Michelson interferometer of equivalent intersecting mirror |
| CN104596996A (en) * | 2015-01-06 | 2015-05-06 | 香港理工大学深圳研究院 | Gas detection method and gas detection system based on hollow-core optical fiber photothermal effect |
| CN104688188A (en) * | 2015-03-12 | 2015-06-10 | 清华大学 | Spectral optical coherence imaging system based on optic computation |
| CN106338308A (en) * | 2016-08-25 | 2017-01-18 | 武汉理工大学 | Distributed multi-parameter sensing system based on ultra-short fiber Bragg grating array |
| CN106840009A (en) * | 2017-04-14 | 2017-06-13 | 福建师范大学 | Big spacing lens wearer distance-measuring device and its measuring method |
| CN106840221A (en) * | 2017-01-06 | 2017-06-13 | 武汉理工大学 | Fiber grating demodulation device and method based on dispersion Mach Zehnder interferometry |
| CN107661089A (en) * | 2017-09-19 | 2018-02-06 | 北京工业大学 | A kind of domain optical coherence chromatographs continuous dispersion compensation imaging method and system |
| CN107678224A (en) * | 2017-11-14 | 2018-02-09 | 中国电子科技集团公司第三十四研究所 | A kind of luminous signal amplification method and amplifying device based on twin-stage Er-doped fiber |
| US20180128600A1 (en) * | 2015-06-15 | 2018-05-10 | Koninklijke Philips N.V. | Optical shape sensing system and method for sensing a position and/or shape of a medical device using backscatter reflectometry |
| CN108828618A (en) * | 2018-06-11 | 2018-11-16 | 天津大学 | Distant-range high-precision measuring device and method based on equal optical frequency intervals resampling |
| CN108981606A (en) * | 2018-09-17 | 2018-12-11 | 苏州大学 | A kind of fast illuminated whole audience white light interference microscopic measuring method and its device |
| CN108981584A (en) * | 2018-09-06 | 2018-12-11 | 中国工程物理研究院流体物理研究所 | A kind of all -fiber dynamic absolute distance measurement device and method |
| CN209590271U (en) * | 2018-12-13 | 2019-11-05 | 中国电子科技集团公司第三十四研究所 | A kind of measuring device of space length |
-
2018
- 2018-12-13 CN CN201811524975.9A patent/CN109343068A/en active Pending
Patent Citations (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0567701A1 (en) * | 1992-04-27 | 1993-11-03 | Canon Kabushiki Kaisha | Inspection method and apparatus |
| US20080018907A1 (en) * | 2006-07-18 | 2008-01-24 | Rene Beaulieu | Optical apparatus and method for distance measuring |
| CN102656420A (en) * | 2009-07-23 | 2012-09-05 | 拉夫伯勒大学 | Apparatus for the absolute measurement of two dimensional optical path distributions using interferometry |
| CN102607720A (en) * | 2012-03-02 | 2012-07-25 | 北京航空航天大学 | Method and system for measuring optical distance |
| CN102628799A (en) * | 2012-04-25 | 2012-08-08 | 中国科学院上海光学精密机械研究所 | Method and system of time-domain optical coherence tomography without depth scan |
| CN103929250A (en) * | 2014-04-28 | 2014-07-16 | 中国电子科技集团公司第三十四研究所 | Optical fiber phase compensator and use method thereof |
| CN104185353A (en) * | 2014-09-05 | 2014-12-03 | 中国人民解放军陆军军官学院 | Fusion reactor plasma density and temperature diagnosing method based on Thomson scattering weak coherent technique |
| CN104483022A (en) * | 2014-11-25 | 2015-04-01 | 北京工业大学 | Fourier conversion spectrum instrument based on Michelson interferometer of equivalent intersecting mirror |
| CN104596996A (en) * | 2015-01-06 | 2015-05-06 | 香港理工大学深圳研究院 | Gas detection method and gas detection system based on hollow-core optical fiber photothermal effect |
| CN104688188A (en) * | 2015-03-12 | 2015-06-10 | 清华大学 | Spectral optical coherence imaging system based on optic computation |
| US20180128600A1 (en) * | 2015-06-15 | 2018-05-10 | Koninklijke Philips N.V. | Optical shape sensing system and method for sensing a position and/or shape of a medical device using backscatter reflectometry |
| CN106338308A (en) * | 2016-08-25 | 2017-01-18 | 武汉理工大学 | Distributed multi-parameter sensing system based on ultra-short fiber Bragg grating array |
| CN106840221A (en) * | 2017-01-06 | 2017-06-13 | 武汉理工大学 | Fiber grating demodulation device and method based on dispersion Mach Zehnder interferometry |
| CN106840009A (en) * | 2017-04-14 | 2017-06-13 | 福建师范大学 | Big spacing lens wearer distance-measuring device and its measuring method |
| CN107661089A (en) * | 2017-09-19 | 2018-02-06 | 北京工业大学 | A kind of domain optical coherence chromatographs continuous dispersion compensation imaging method and system |
| CN107678224A (en) * | 2017-11-14 | 2018-02-09 | 中国电子科技集团公司第三十四研究所 | A kind of luminous signal amplification method and amplifying device based on twin-stage Er-doped fiber |
| CN108828618A (en) * | 2018-06-11 | 2018-11-16 | 天津大学 | Distant-range high-precision measuring device and method based on equal optical frequency intervals resampling |
| CN108981584A (en) * | 2018-09-06 | 2018-12-11 | 中国工程物理研究院流体物理研究所 | A kind of all -fiber dynamic absolute distance measurement device and method |
| CN108981606A (en) * | 2018-09-17 | 2018-12-11 | 苏州大学 | A kind of fast illuminated whole audience white light interference microscopic measuring method and its device |
| CN209590271U (en) * | 2018-12-13 | 2019-11-05 | 中国电子科技集团公司第三十四研究所 | A kind of measuring device of space length |
Non-Patent Citations (2)
| Title |
|---|
| 张记龙: "现代光电信息技术及应用", "北京.国防工业出版社", pages: 114 - 117 * |
| 李方家;刘军;李儒新;: "基于自衍射效应的自参考光谱干涉方法的研究", 物理学报, no. 06 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114152591A (en) * | 2021-12-03 | 2022-03-08 | 中国电子科技集团公司第三十四研究所 | Position and wavelength demodulation system and method for cascade fiber grating sensing array |
| CN114152591B (en) * | 2021-12-03 | 2024-02-13 | 中国电子科技集团公司第三十四研究所 | Position and wavelength demodulation system and method of cascade fiber bragg grating sensing array |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11098997B2 (en) | Interferometric distance measurement based on compression of chirped interferogram from cross-chirped interference | |
| CN105866795B (en) | The Larger Dynamic Wind measurement laser radar of F-P interferometers is scanned based on all -fiber | |
| US8094292B2 (en) | Cross-chirped interferometry system and method for light detection and ranging | |
| CN107328429B (en) | Device and method for improving proximity sensing stability in optical frequency domain reflection technology | |
| CN108303706B (en) | Aerosol optical parameter detection method and hyperspectral laser radar detection system | |
| CN110132138A (en) | Double swept light source range-measurement systems and method based on cascade interferometer | |
| CN108562237B (en) | Device and method for performing spectrum calibration in optical frequency domain reflection sensing system by adopting HCN (hydrogen cyanide) air chamber | |
| CN108534811A (en) | A kind of cavity length demodulating algorithm of short cavity optical fiber Fabry-Perot sensor | |
| CN209590271U (en) | A kind of measuring device of space length | |
| CN110441792B (en) | Rayleigh scattering laser radar system capable of measuring wind and temperature simultaneously and related calibration method | |
| CN109029271A (en) | DFB array swept light source optical fiber frequency domain interfeerometry ranging system and method | |
| CN114019525A (en) | High-precision laser spectrum distance measurement method based on optical comb | |
| CN103644859A (en) | Device and method used for measuring deformation of diamond anvil under high temperature high pressure condition | |
| Sosin et al. | Frequency sweeping interferometry for robust and reliable distance measurements in harsh accelerator environment | |
| CN107727234B (en) | Device and method for rapidly detecting terahertz output frequency instability of backward wave tube | |
| CN109343068A (en) | A kind of measuring device and measuring method of space length | |
| CN111721968B (en) | Method for measuring gas flow velocity based on double-optical comb system | |
| CN110456383B (en) | Molecular scattering coherent laser radar system | |
| CN104246476A (en) | Optical tomographic image acquiring device | |
| CN104655029B (en) | A kind of position phase reinforced membranes method for measuring thickness and system | |
| CN204612666U (en) | A kind of position phase reinforced membranes thickness measurement system | |
| JP7091563B2 (en) | Antenna system for inspection | |
| CN214174613U (en) | Absolute distance measuring device based on microwave frequency domain interference | |
| CN110793445A (en) | Multi-channel synchronous absolute distance measuring method and device based on all-fiber frequency domain interference | |
| Renner et al. | Detection of moving targets using coherent optical frequency domain reflectometry |
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 |