CN106644103B - A kind of system and method directly differentiating chaos light field Photon Statistical Properties - Google Patents
A kind of system and method directly differentiating chaos light field Photon Statistical Properties Download PDFInfo
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- G01J—MEASUREMENT OF INTENSITY, VELOCITY, SPECTRAL CONTENT, POLARISATION, PHASE OR PULSE CHARACTERISTICS OF INFRARED, VISIBLE OR ULTRAVIOLET LIGHT; COLORIMETRY; RADIATION PYROMETRY
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Abstract
The present invention relates to the discrimination technology of chaos light field, specifically a kind of system and method for directly differentiating chaos light field Photon Statistical Properties.The method of discrimination that the present invention solves existing chaos light field lacks the analysis to Photon Statistical Properties in chaos light field high-order coherence and single photon level, while accurately can not carry out chaos light field and other light fields effectively to differentiate the problem of distinguishing.A kind of direct system for differentiating chaos light field Photon Statistical Properties includes chaos light generating device, relevant light generating device, hot light generating device, quasi- single photon generation device, detection device；The chaos light generating device includes first laser device, Polarization Controller, optical fiber circulator, 80:20 fiber coupler, variable attenuator, fiber coupling follower, the first fiber coupling loader, the first spatial filter, the first optical fiber acousto-optic modulator, the first voltage controlled oscillator, the first arbitrary waveform generator, the first RF switch, the first power amplifier.The present invention is suitable for the differentiation of chaos light field.
Description
Technical field
It is specifically a kind of directly to differentiate chaos light field Photon Statistical Properties the present invention relates to the discrimination technology of chaos light field
System and method.
Background technique
Chaos is always heat concerned by people as the typical nonlinear dynamic phenomenon of light feedback semiconductor laser
Point.Have now been found that ruelle-takens route has period doubling bifurcation road, chaos paracycle, intermittency chaos etc..In recent years, chaos
Practicability causes the concern of people, and is widely studied in a series of fields, such as chaotic communication, chaos laser range-measurement.It is mixed
The height of ignorant dimension directly influences the privacy degrees of signal and the precision of chaos laser range-measurement.Meanwhile semiconductor laser
Coherence also directly influences its application in field of optical measurements.Therefore the differentiation of chaos light field is just particularly important.
Currently, the differentiation of chaos light field is mainly the following method：One, bifurcation diagram observation method：This method passes through comparison
Analysis and synthesis increases a parameter value of laser to determine the fork and chaos phenomenon that solve（Feedback intensity）, chaos light field
Timing diagram after it is periodical concussion, paracycle concussion enter chaos shake, it is this to be changed into another kind from a kind of concussion state
The phenomenon that concussion state referred to as bifurcated.Because bifurcation is only present in deterministic system, it is possible to be observed by fitting
The bifurcation diagram of light field determines deterministic chaos light field.Two, spectral density analytic approach：It is analyzed according to Fourier it is found that aperiodic
Signal it is corresponding in frequency space be successive line, this is because in chaotic motion, each chaos of track " access "
The average period of band, by the frequency spectrum of observation chaotic signal come analysis and distinguishing chaos light field, the spectrogram of chaotic signal has centainly
Periodic vibration element, and there is no this features [referring to document A. Uchida, " Optical for noise signal
Communication with Chaotic Lasers", Wiley-VCH, 2012.].Three, Lyapunov index method：For
Chaotic identification, early in 1989, the Iyapunov index that Stringerflq just proposes computing system differentiated with correlation dimension.
Because a condition of chaos is in the presence of one or more positive Lyapunov indexes, Liapunov exponent is then anticipated less than zero
Taste consecutive points finally to draw close and be merged into a bit, this corresponds to stable fixed point and periodic motion；If index is greater than zero,
Mean that consecutive points are finally to be separated, this corresponds to the local instability of track, if the ballast of track also entirety is (such as
Global boundedness, dissipate, there are capture regions etc.), then it is folding in this role and form chaos attractor.Index is bigger,
Illustrate that chaotic characteristic is more obvious, chaos degree is higher；Above method is it needs to be determined that bifurcation point and universal constant are needed to frequency spectrum, week
Various information such as phase property, bifurcation diagram are analyzed, and could distinguish chaos and noise.But light field can not be obtained
The more information of association, coherence etc..In conclusion the method for discrimination of existing chaos light field lacks to chaos light field high-order
The analysis of Photon Statistical Properties in coherence and single photon level, while can not accurately carry out chaos light field and other light fields
Effectively differentiate and distinguish, or even limited by detector dead time and light intensity, it is difficult to complete the measurement of high-precision and intensity.It is based on
This, it is necessary to a kind of completely new chaos light field discrimination technology is invented, to solve on existing for the method for discrimination of existing chaos light field
State problem.
Summary of the invention
The present invention lacks to solve the method for discrimination of existing chaos light field to chaos light field high-order coherence and single photon
The analysis of Photon Statistical Properties in level, while accurately can not carry out chaos light field and other light fields effectively to differentiate differentiation
Problem provides a kind of system and method for directly differentiating chaos light field Photon Statistical Properties.
The present invention adopts the following technical scheme that realization：
A kind of system directly differentiating chaos light field Photon Statistical Properties, including chaos light generating device, coherent light generate
Device, hot light generating device, quasi- single photon generation device, detection device；
The chaos light generating device includes first laser device, Polarization Controller, optical fiber circulator, 80:20 optical fiber coupling
Clutch, variable attenuator, fiber coupling follower, the first fiber coupling loader, the first spatial filter, the first optical fiber acousto-optic
Modulator, the first voltage controlled oscillator, the first arbitrary waveform generator, the first RF switch, the first power amplifier；
The exit end of first laser device and the incidence end of Polarization Controller connect；The exit end and fiber optic loop of Polarization Controller
The incidence end of shape device connects；The exit end of optical fiber circulator and 80:The incidence end of 20 fiber coupler connects；80:20 light
First exit end of fine coupler and the incidence end of variable attenuator connect；80:Second outgoing of 20 fiber coupler
End is connect with the incidence end of fiber coupling follower；The exit end of variable attenuator and the reflection end of optical fiber circulator connect；Light
The exit end of fibre coupling follower is connect with the incidence end of the first fiber coupling loader；The outgoing of first fiber coupling loader
End is connect with the incidence end of the first spatial filter；The exit end of first spatial filter enters with the first optical fiber acousto-optic modulator
Penetrate end connection；The signal output end of first voltage controlled oscillator and the signal output end of the first arbitrary waveform generator are penetrated with first
The signal input part connection of frequency switch；The signal input part of the signal output end of first RF switch and the first power amplifier connects
It connects；The signal output end of first power amplifier is connect with the signal input part of the first optical fiber acousto-optic modulator；
The relevant light generating device includes second laser, the second fiber coupling loader, second space filter,
Two optical fiber acousto-optic modulators, the second voltage controlled oscillator, the second arbitrary waveform generator, the second RF switch, the second power amplification
Device；
The exit end of second laser is connect with the incidence end of the second fiber coupling loader；Second fiber coupling loader
Exit end connect with the incidence end of second space filter；The exit end of second space filter and the second optical fiber acousto-optic modulation
The incidence end of device connects；The signal output end of second voltage controlled oscillator and the signal output end of the second arbitrary waveform generator with
The signal input part of second RF switch connects；The signal output end of second RF switch and the signal of the second power amplifier are defeated
Enter end connection；The signal output end of second power amplifier is connect with the signal input part of the second optical fiber acousto-optic modulator；
The hot light generating device includes third laser, third fiber coupling loader, third spatial filter, third
Optical fiber acousto-optic modulator, the first fibre optic attenuator, convex lens, the frosted glass of rotation, aperture, third voltage controlled oscillator,
Three arbitrary waveform generator, third RF switch, third power amplifier；
The exit end of third laser is connect with the incidence end of third fiber coupling loader；Third fiber coupling loader
Exit end connect with the incidence end of third spatial filter；The exit end of third spatial filter and the acousto-optic modulation of third optical fiber
The incidence end of device connects；The exit end of third optical fiber acousto-optic modulator is connect with the incidence end of the first fibre optic attenuator；First light
The exit end of fine attenuator and the incidence end of convex lens connect；The incidence end of the frosted glass of the exit end and rotation of convex lens connects
It connects；The exit end of the frosted glass of rotation and the incidence end of aperture connect；The signal output end of third voltage controlled oscillator and
The signal output end of three arbitrary waveform generator is connect with the signal input part of third RF switch；The letter of third RF switch
Number output end is connect with the signal input part of third power amplifier；The signal output end and third optical fiber of third power amplifier
The signal input part of acousto-optic modulator connects；
The quasi- single photon generation device include the 4th laser, the 4th fiber coupling loader, the 4th spatial filter,
4th optical fiber acousto-optic modulator, the second fibre optic attenuator, the 4th voltage controlled oscillator, the 4th arbitrary waveform generator, the 4th radio frequency
Switch, the 4th power amplifier；
The exit end of 4th laser is connect with the incidence end of the 4th fiber coupling loader；4th fiber coupling loader
Exit end connect with the incidence end of the 4th spatial filter；The exit end of 4th spatial filter and the 4th optical fiber acousto-optic modulation
The incidence end of device connects；The exit end of 4th optical fiber acousto-optic modulator is connect with the incidence end of the second fibre optic attenuator；4th pressure
The signal output end of the signal output end and the 4th arbitrary waveform generator of controlling oscillator is defeated with the signal of the 4th RF switch
Enter end connection；The signal output end of 4th RF switch is connect with the signal input part of the 4th power amplifier；4th power is put
The signal output end of big device is connect with the signal input part of the 4th optical fiber acousto-optic modulator；
The detection device includes optical filter, 50:50 non-polarizing beamsplitter, the first of binary channels single-photon detector are led to
Road, the second channel of binary channels single-photon detector, data acquisition and analysis system；
The exit end of first optical fiber acousto-optic modulator, the second optical fiber acousto-optic modulator exit end, aperture outgoing
It holds, the exit end of the second fibre optic attenuator is connect with the incidence end of optical filter；The exit end of optical filter and 50:50 it is unpolarized
The incidence end of beam splitter connects；50:Two exit ends of 50 non-polarizing beamsplitter respectively with binary channels single-photon detector
The incidence end of first passage is connected with the incidence end of the second channel of binary channels single-photon detector；Binary channels single-photon detector
First passage signal output end and binary channels single-photon detector second channel signal output end with data acquire
The signal input part of analysis system connects.
A kind of method directly differentiating chaos light field Photon Statistical Properties（This method is directly sentenced in one kind of the present invention
It is realized in the system of other chaos light field Photon Statistical Properties）, this method is using following steps realization：
Step 1：The laser that first laser device issues successively enters 80 through Polarization Controller, optical fiber circulator:20 optical fiber
Coupler, and through 80:20 fiber coupler is divided into two-way, and wherein first via laser is successively through variable attenuator, fiber annular
Device returns to first laser device, so that first laser device issues chaotic laser light；The chaotic laser light that first laser device issues successively passes through partially
Shake controller, optical fiber circulator, 80:20 fiber coupler, fiber coupling follower, the first fiber coupling loader, first
Spatial filter, the first optical fiber acousto-optic modulator are exported, and continuous chaos light is thus generated；
Step 2：The laser that second laser issues is successively through the second fiber coupling loader, second space filter, the
Two optical fiber acousto-optic modulators are exported, and continuous coherent light is thus generated；
Step 3：The laser that third laser issues is successively through third fiber coupling loader, third spatial filter, the
Three optical fiber acousto-optic modulators, the first fibre optic attenuator, convex lens, the frosted glass of rotation, aperture are exported, and are thus generated
Continuous Heat light；
Step 4：The laser that 4th laser issues is successively through the 4th fiber coupling loader, the 4th spatial filter, the
Four optical fiber acousto-optic modulators, the second fibre optic attenuator are exported；4th voltage controlled oscillator issue radiofrequency signal and the 4th
The pulse signal that waveform generator issues of anticipating enters the 4th power amplifier through the 4th RF switch, and through the 4th power amplification
Device obtains periodic radiofrequency signal, and periodic radiofrequency signal enters the 4th optical fiber acousto-optic modulator, so that through the 4th
The laser of optical fiber acousto-optic modulator output becomes quasi- single photon；
Step 5：Continuous chaos light, continuous coherent light, Continuous Heat light, quasi- single photon enter 50 through optical filter:50 it is non-
Polarization beam apparatus, and through 50:50 non-polarizing beamsplitter is divided into the equal two-beam of intensity, and two-beam is respectively through binary channels monochromatic light
The first passage of sub- detector and the second channel of binary channels single-photon detector enter data acquisition and analysis system, data acquisition
Analysis system detects the coincidence counting between two-beam；At this point, changing the first passage of binary channels single-photon detector
Relative delay between the second channel of binary channels single-photon detector, and by data acquisition and analysis system to different phases
Coincidence counting between two-beam under delay time is detected, continuous chaos light, continuous coherent light, Continuous Heat can be obtained
The second order coherence degree curve and theory analysis curve of light, quasi- single photon；
Step 6：The pulse signal that the radiofrequency signal and the first arbitrary waveform generator that first voltage controlled oscillator issues issue
Enter the first power amplifier through the first RF switch, and obtains periodic radiofrequency signal, week through the first power amplifier
The radiofrequency signal of phase property enters the first optical fiber acousto-optic modulator, so that through the continuous mixed of the first optical fiber acousto-optic modulator output
Ignorant light becomes pulse chaos light；
Step 7：The pulse signal that the radiofrequency signal and the second arbitrary waveform generator that second voltage controlled oscillator issues issue
Enter the second power amplifier through the second RF switch, and obtains periodic radiofrequency signal, week through the second power amplifier
The radiofrequency signal of phase property enters the second optical fiber acousto-optic modulator, so that the continuous phase exported through the second optical fiber acousto-optic modulator
Dry light becomes pulse coherence light；
Step 8：The pulse signal that the radiofrequency signal and third arbitrary waveform generator that third voltage controlled oscillator issues issue
Enter third power amplifier through third RF switch, and obtains periodic radiofrequency signal, week through third power amplifier
The radiofrequency signal of phase property enters third optical fiber acousto-optic modulator, so that the Continuous Heat exported through third optical fiber acousto-optic modulator
Light becomes pulse heat light；
Step 9：Pulse chaos light, pulse coherence light, pulse heat light enter 50 through optical filter:50 unpolarized beam splitting
Device, and through 50:50 non-polarizing beamsplitter is divided into the equal two-beam of intensity, and two-beam is respectively through binary channels single-photon detector
First passage and the second channel of binary channels single-photon detector enter data acquisition and analysis system, data acquisition and analysis system
Coincidence counting between two-beam is detected；At this point, changing the first passage and binary channels of binary channels single-photon detector
Relative delay between the second channel of single-photon detector, and when by data acquisition and analysis system to different relative delays
Between coincidence counting between lower two-beam detected, the second order of pulse chaos light, pulse coherence light, pulse heat light can be obtained
Degree of coherence curve and theory analysis curve.
Compared with the method for discrimination of existing chaos light field, a kind of directly differentiation chaos light field photon statistics of the present invention
The system and method for characteristic realizes horizontal to chaos light field high-order coherence and single photon by using completely new discrimination principles
The analysis of upper Photon Statistical Properties, while realizing and accurately carrying out chaos light field and other light fields effectively to differentiate differentiation, by
This realizes accurately and effectively differentiation chaos light field.
The method of discrimination that the present invention efficiently solves existing chaos light field lacks to chaos light field high-order coherence and monochromatic light
The analysis of sub horizontal upper Photon Statistical Properties, while accurately can not effectively differentiate by chaos light field and other light fields and distinguish
The problem of, the differentiation suitable for chaos light field.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram for the system for directly differentiating chaos light field Photon Statistical Properties in the present invention.
Fig. 2 is the second order coherence degree curve of continuous chaos light, continuous coherent light, Continuous Heat light, quasi- single photon in the present invention
Schematic diagram.
Fig. 3 is in the present invention when f=0.5（F is the width and the ratio in period for the pulse signal that arbitrary waveform generator issues
Value）When pulse chaos light, pulse coherence light, pulse heat light second order coherence degree curve synoptic diagram.
Fig. 4 is in the present invention when f=0.3,0.5,0.7（F be arbitrary waveform generator issue pulse signal width with
The ratio in period）When pulse chaos light, pulse coherence light, pulse heat light second order coherence degree curve synoptic diagram.
In figure：1a- first laser device, 2- Polarization Controller, 3- optical fiber circulator, 4-80:20 fiber coupler, 5- can
Become attenuator, 6- fiber coupling follower, 7a- the first fiber coupling loader, the first spatial filter of 8a-, the first optical fiber of 9a-
Acousto-optic modulator, the first voltage controlled oscillator of 19a-, the first arbitrary waveform generator of 20a-, the first RF switch of 21a-, 22a-
One power amplifier, 1b- second laser, 7b- the second fiber coupling loader, 8b- second space filter, the second light of 9b-
Fiber acousto-optic device, the second voltage controlled oscillator of 19b-, the second arbitrary waveform generator of 20b-, the second RF switch of 21b-, 22b-
Second power amplifier, 1c- third laser, 7c- third fiber coupling loader, 8c- third spatial filter, 9c- third
Optical fiber acousto-optic modulator, the first fibre optic attenuator of 10c-, 11- convex lens, the frosted glass of 12- rotation, 13- aperture, 19c-
Third voltage controlled oscillator, 20c- third arbitrary waveform generator, 21c- third RF switch, 22c- third power amplifier, 1d-
4th laser, the 4th fiber coupling loader of 7d-, the 4th spatial filter of 8d-, the 4th optical fiber acousto-optic modulator of 9d-, 10d-
Second fibre optic attenuator, the 4th voltage controlled oscillator of 19d-, the 4th arbitrary waveform generator of 20d-, the 4th RF switch of 21d-,
The 4th power amplifier of 22d-.
Specific embodiment
A kind of system directly differentiating chaos light field Photon Statistical Properties, including chaos light generating device, coherent light generate
Device, hot light generating device, quasi- single photon generation device, detection device；
The chaos light generating device includes first laser device 1a, Polarization Controller 2, optical fiber circulator 3,80:20 light
Fine coupler 4, variable attenuator 5, fiber coupling follower 6, the first fiber coupling loader 7a, the first spatial filter 8a,
First optical fiber acousto-optic modulator 9a, the first voltage controlled oscillator 19a, the first arbitrary waveform generator 20a, the first RF switch 21a,
First power amplifier 22a；
The exit end of first laser device 1a is connect with the incidence end of Polarization Controller 2；The exit end and light of Polarization Controller 2
The incidence end of fine circulator 3 connects；The exit end of optical fiber circulator 3 and 80:The incidence end of 20 fiber coupler 4 connects；80:
First exit end of 20 fiber coupler 4 is connect with the incidence end of variable attenuator 5；80:The of 20 fiber coupler 4
Two exit ends are connect with the incidence end of fiber coupling follower 6；The exit end of variable attenuator 5 is anti-with optical fiber circulator 3
Penetrate end connection；The exit end of fiber coupling follower 6 is connect with the incidence end of the first fiber coupling loader 7a；First optical fiber coupling
The exit end for closing loader 7a is connect with the incidence end of the first spatial filter 8a；The exit end of first spatial filter 8a and
The incidence end of one optical fiber acousto-optic modulator 9a connects；The signal output end of first voltage controlled oscillator 19a and the first random waveform hair
The signal output end of raw device 20a is connect with the signal input part of the first RF switch 21a；The signal of first RF switch 21a
Output end is connect with the signal input part of the first power amplifier 22a；The signal output end and first of first power amplifier 22a
The signal input part of optical fiber acousto-optic modulator 9a connects；
The relevant light generating device includes second laser 1b, the second fiber coupling loader 7b, second space filtering
Device 8b, the second optical fiber acousto-optic modulator 9b, the second voltage controlled oscillator 19b, the second arbitrary waveform generator 20b, the second radio frequency are opened
Close 21b, the second power amplifier 22b；
The exit end of second laser 1b is connect with the incidence end of the second fiber coupling loader 7b；Second fiber coupling is defeated
The exit end for entering device 7b is connect with the incidence end of second space filter 8b；The exit end and the second light of second space filter 8b
The incidence end of fiber acousto-optic device 9b connects；The signal output end and the second arbitrary waveform generator of second voltage controlled oscillator 19b
The signal output end of 20b is connect with the signal input part of the second RF switch 21b；The signal of second RF switch 21b exports
End is connect with the signal input part of the second power amplifier 22b；The signal output end and the second optical fiber of second power amplifier 22b
The signal input part of acousto-optic modulator 9b connects；
The hot light generating device includes third laser 1c, third fiber coupling loader 7c, third spatial filter
8c, third optical fiber acousto-optic modulator 9c, the first fibre optic attenuator 10c, convex lens 11, rotation frosted glass 12, aperture 13,
Third voltage controlled oscillator 19c, third arbitrary waveform generator 20c, third RF switch 21c, third power amplifier 22c；
The exit end of third laser 1c is connect with the incidence end of third fiber coupling loader 7c；Third fiber coupling is defeated
The exit end for entering device 7c is connect with the incidence end of third spatial filter 8c；The exit end and third light of third spatial filter 8c
The incidence end of fiber acousto-optic device 9c connects；The exit end of third optical fiber acousto-optic modulator 9c and the first fibre optic attenuator 10c's
Incidence end connection；The exit end of first fibre optic attenuator 10c is connect with the incidence end of convex lens 11；The exit end of convex lens 11 with
The incidence end of the frosted glass 12 of rotation connects；The exit end of the frosted glass 12 of rotation is connect with the incidence end of aperture 13；The
The signal output end of three voltage controlled oscillator 19c and the signal output end of third arbitrary waveform generator 20c are opened with third radio frequency
Close the signal input part connection of 21c；The signal output end of third RF switch 21c and the signal of third power amplifier 22c are defeated
Enter end connection；The signal output end of third power amplifier 22c is connect with the signal input part of third optical fiber acousto-optic modulator 9c；
The quasi- single photon generation device includes the 4th laser 1d, the 4th fiber coupling loader 7d, the filter of the 4th space
Wave device 8d, the 4th optical fiber acousto-optic modulator 9d, the second fibre optic attenuator 10d, the 4th voltage controlled oscillator 19d, the 4th random waveform
Generator 20d, the 4th RF switch 21d, the 4th power amplifier 22d；
The exit end of 4th laser 1d is connect with the incidence end of the 4th fiber coupling loader 7d；4th fiber coupling is defeated
The exit end for entering device 7d is connect with the incidence end of the 4th spatial filter 8d；The exit end and the 4th light of 4th spatial filter 8d
The incidence end of fiber acousto-optic device 9d connects；The exit end of 4th optical fiber acousto-optic modulator 9d and the second fibre optic attenuator 10d's
Incidence end connection；The signal output end of 4th voltage controlled oscillator 19d and the signal output end of the 4th arbitrary waveform generator 20d are equal
It is connect with the signal input part of the 4th RF switch 21d；The signal output end and the 4th power amplifier of 4th RF switch 21d
The signal input part of 22d connects；The signal of the signal output end of 4th power amplifier 22d and the 4th optical fiber acousto-optic modulator 9d
Input terminal connection；
The detection device includes optical filter 14,50:The of 50 non-polarizing beamsplitter 15, binary channels single-photon detector
One channel 16, the second channel 17 of binary channels single-photon detector, data acquisition and analysis system 18；
Exit end, the aperture 13 of the exit end of first optical fiber acousto-optic modulator 9a, the second optical fiber acousto-optic modulator 9b
Exit end, the second fibre optic attenuator 10d exit end connect with the incidence end of optical filter 14；The exit end of optical filter 14 with
50:The incidence end of 50 non-polarizing beamsplitter 15 connects；50:Two exit ends of 50 non-polarizing beamsplitter 15 respectively with bilateral
The incidence end of the second channel 17 of the incidence end and binary channels single-photon detector of the first passage 16 of road single-photon detector connects
It connects；The signal output end of the first passage 16 of binary channels single-photon detector and the second channel 17 of binary channels single-photon detector
Signal output end connect with the signal input part of data acquisition and analysis system 18.
The first laser device 1a, second laser 1b, third laser 1c, the 4th laser 1d are all made of central wavelength
For the LS-1550-SM type single mode semiconductor laser of 1550nm；The first optical fiber acousto-optic modulator 9a, the second optical fiber acousto-optic
Modulator 9b, third optical fiber acousto-optic modulator 9c, the 4th optical fiber acousto-optic modulator 9d are all made of 165 that centre frequency is 165MHz
FCAOM type optical fiber acousto-optic modulator；The focal length of the convex lens 11 is 12mm；It is the first voltage controlled oscillator 19a, second voltage-controlled
Oscillator 19b, third voltage controlled oscillator 19c, the 4th voltage controlled oscillator 19d are all made of ZOS-200+ type voltage controlled oscillator；It is described
First arbitrary waveform generator 20a, the second arbitrary waveform generator 20b, third arbitrary waveform generator 20c, the 4th any wave
Shape generator 20d is all made of Agilent-33220A type arbitrary waveform generator；The first RF switch 21a, the second radio frequency
Switch 21b, third RF switch 21c, the 4th RF switch 21d are all made of ZASWA-2-50DR+ type RF switch；Described first
Power amplifier 22a, the second power amplifier 22b, third power amplifier 22c, the 4th power amplifier 22d are all made of ZHL-
1-2W type power amplifier.
A kind of method directly differentiating chaos light field Photon Statistical Properties（This method is directly sentenced in one kind of the present invention
It is realized in the system of other chaos light field Photon Statistical Properties）, this method is using following steps realization：
Step 1：The laser that first laser device 1a is issued successively enters 80 through Polarization Controller 2, optical fiber circulator 3:20
Fiber coupler 4, and through 80:20 fiber coupler 4 divides for two-way, and wherein first via laser is successively through variable attenuator 5, light
Fine circulator 3 returns to first laser device 1a, so that first laser device 1a issues chaotic laser light；The chaos that first laser device 1a is issued
Laser is successively through Polarization Controller 2, optical fiber circulator 3,80:20 fiber coupler 4, fiber coupling follower 6, the first optical fiber
Coupling input device 7a, the first spatial filter 8a, the first optical fiber acousto-optic modulator 9a are exported, and continuous chaos is thus generated
Light；
Step 2：The laser that second laser 1b is issued is successively through the second fiber coupling loader 7b, second space filter
8b, the second optical fiber acousto-optic modulator 9b are exported, and continuous coherent light is thus generated；
Step 3：The laser that third laser 1c is issued is successively through third fiber coupling loader 7c, third spatial filter
8c, third optical fiber acousto-optic modulator 9c, the first fibre optic attenuator 10c, convex lens 11, the frosted glass 12 of rotation, aperture 13
It is exported, thus generates Continuous Heat light；
Step 4：The laser that 4th laser 1d is issued is successively through the 4th fiber coupling loader 7d, the 4th spatial filter
8d, the 4th optical fiber acousto-optic modulator 9d, the second fibre optic attenuator 10d are exported；The radio frequency that 4th voltage controlled oscillator 19d is issued
The pulse signal that signal and the 4th arbitrary waveform generator 20d are issued enters the 4th power amplification through the 4th RF switch 21d
Device 22d, and periodic radiofrequency signal is obtained through the 4th power amplifier 22d, periodic radiofrequency signal enters the 4th optical fiber
Acousto-optic modulator 9d, so that the laser exported through the 4th optical fiber acousto-optic modulator 9d becomes quasi- single photon；
Step 5：Continuous chaos light, continuous coherent light, Continuous Heat light, quasi- single photon enter 50 through optical filter 14:50
Non-polarizing beamsplitter 15, and through 50:50 non-polarizing beamsplitter 15 divides the two-beam equal for intensity, and two-beam is respectively through bilateral
The first passage 16 of road single-photon detector and the second channel 17 of binary channels single-photon detector enter data collection and analysis system
System 18, data acquisition and analysis system 18 detects the coincidence counting between two-beam；At this point, changing binary channels single-photon detecting
The relative delay between the first passage 16 of device and the second channel 17 of binary channels single-photon detector is surveyed, and is adopted by data
Coincidence counting under 18 pairs of set analysis system different relative delays between two-beam detects, and continuous chaos can be obtained
Light, continuous coherent light, Continuous Heat light, quasi- single photon second order coherence degree curve and theory analysis curve；
Step 6：The arteries and veins that the radiofrequency signal and the first arbitrary waveform generator 20a that first voltage controlled oscillator 19a is issued issue
It rushes signal and enters the first power amplifier 22a through the first RF switch 21a, and obtain the period through the first power amplifier 22a
Property radiofrequency signal, periodic radiofrequency signal enter the first optical fiber acousto-optic modulator 9a so that through the first optical fiber acousto-optic
The continuous chaos light of modulator 9a output becomes pulse chaos light；
Step 7：The arteries and veins that the radiofrequency signal and the second arbitrary waveform generator 20b that second voltage controlled oscillator 19b is issued issue
It rushes signal and enters the second power amplifier 22b through the second RF switch 21b, and obtain the period through the second power amplifier 22b
Property radiofrequency signal, periodic radiofrequency signal enter the second optical fiber acousto-optic modulator 9b so that through the second optical fiber acousto-optic
The continuous coherent light of modulator 9b output becomes pulse coherence light；
Step 8：The arteries and veins that the radiofrequency signal and third arbitrary waveform generator 20c that third voltage controlled oscillator 19c is issued issue
It rushes signal and enters third power amplifier 22c through third RF switch 21c, and obtain the period through third power amplifier 22c
The radiofrequency signal of property, periodic radiofrequency signal enters third optical fiber acousto-optic modulator 9c, so that through third optical fiber acousto-optic
The Continuous Heat light of modulator 9c output becomes pulse heat light；
Step 9：Pulse chaos light, pulse coherence light, pulse heat light enter 50 through optical filter 14:50 unpolarized beam splitting
Device 15, and through 50:50 non-polarizing beamsplitter 15 divides the two-beam equal for intensity, and two-beam is respectively through binary channels single-photon detecting
The second channel 17 of the first passage 16 and binary channels single-photon detector of surveying device enters data acquisition and analysis system 18, and data are adopted
Set analysis system 18 detects the coincidence counting between two-beam；At this point, changing the first of binary channels single-photon detector
Relative delay between channel 16 and the second channel 17 of binary channels single-photon detector, and by data acquisition and analysis system
Coincidence counting under 18 pairs of different relative delays between two-beam detects, and pulse chaos light, pulsion phase can be obtained
The second order coherence degree curve and theory analysis curve of dry light, pulse heat light.
Claims (3)
1. a kind of system for directly differentiating chaos light field Photon Statistical Properties, it is characterised in that：Including chaos light generating device, phase
Dry light generating device, hot light generating device, quasi- single photon generation device and detection device；
The chaos light generating device includes first laser device（1a）, Polarization Controller（2）, optical fiber circulator（3）,80:20
Fiber coupler（4）, variable attenuator（5）, fiber coupling follower（6）, the first fiber coupling loader（7a）, the first space
Filter（8a）, the first optical fiber acousto-optic modulator（9a）, the first voltage controlled oscillator（19a）, the first arbitrary waveform generator
（20a）, the first RF switch（21a）, the first power amplifier（22a）；
First laser device（1a）Exit end and Polarization Controller（2）Incidence end connection；Polarization Controller（2）Exit end with
Optical fiber circulator（3）Incidence end connection；Optical fiber circulator（3）Exit end and 80:20 fiber coupler（4）Incidence end
Connection；80:20 fiber coupler（4）First exit end and variable attenuator（5）Incidence end connection；80:20 light
Fine coupler（4）Second exit end and fiber coupling follower（6）Incidence end connection；Variable attenuator（5）Outgoing
End and optical fiber circulator（3）Reflection end connection；Fiber coupling follower（6）Exit end and the first fiber coupling loader
（7a）Incidence end connection；First fiber coupling loader（7a）Exit end and the first spatial filter（8a）Incidence end connect
It connects；First spatial filter（8a）Exit end and the first optical fiber acousto-optic modulator（9a）Incidence end connection；First voltage-controlled vibration
Swing device（19a）Signal output end and the first arbitrary waveform generator（20a）Signal output end with the first RF switch
（21a）Signal input part connection；First RF switch（21a）Signal output end and the first power amplifier（22a）Letter
The connection of number input terminal；First power amplifier（22a）Signal output end and the first optical fiber acousto-optic modulator（9a）Signal it is defeated
Enter end connection；
The relevant light generating device includes second laser（1b）, the second fiber coupling loader（7b）, second space filtering
Device（8b）, the second optical fiber acousto-optic modulator（9b）, the second voltage controlled oscillator（19b）, the second arbitrary waveform generator（20b）,
Two RF switches（21b）, the second power amplifier（22b）；
Second laser（1b）Exit end and the second fiber coupling loader（7b）Incidence end connection；Second fiber coupling is defeated
Enter device（7b）Exit end and second space filter（8b）Incidence end connection；Second space filter（8b）Exit end with
Second optical fiber acousto-optic modulator（9b）Incidence end connection；Second voltage controlled oscillator（19b）Signal output end and second any
Waveform generator（20b）Signal output end with the second RF switch（21b）Signal input part connection；Second RF switch
（21b）Signal output end and the second power amplifier（22b）Signal input part connection；Second power amplifier（22b）'s
Signal output end and the second optical fiber acousto-optic modulator（9b）Signal input part connection；
The hot light generating device includes third laser（1c）, third fiber coupling loader（7c）, third spatial filter
（8c）, third optical fiber acousto-optic modulator（9c）, the first fibre optic attenuator（10c）, convex lens（11）, rotation frosted glass（12）,
Aperture（13）, third voltage controlled oscillator（19c）, third arbitrary waveform generator（20c）, third RF switch（21c）,
Three power amplifiers（22c）；
Third laser（1c）Exit end and third fiber coupling loader（7c）Incidence end connection；Third fiber coupling is defeated
Enter device（7c）Exit end and third spatial filter（8c）Incidence end connection；Third spatial filter（8c）Exit end with
Third optical fiber acousto-optic modulator（9c）Incidence end connection；Third optical fiber acousto-optic modulator（9c）Exit end decline with the first optical fiber
Subtract device（10c）Incidence end connection；First fibre optic attenuator（10c）Exit end and convex lens（11）Incidence end connection；It is convex
Lens（11）Exit end and rotation frosted glass（12）Incidence end connection；The frosted glass of rotation（12）Exit end and aperture
Diaphragm（13）Incidence end connection；Third voltage controlled oscillator（19c）Signal output end and third arbitrary waveform generator（20c）
Signal output end with third RF switch（21c）Signal input part connection；Third RF switch（21c）Signal output
End and third power amplifier（22c）Signal input part connection；Third power amplifier（22c）Signal output end and third
Optical fiber acousto-optic modulator（9c）Signal input part connection；
The quasi- single photon generation device includes the 4th laser（1d）, the 4th fiber coupling loader（7d）, the 4th space filter
Wave device（8d）, the 4th optical fiber acousto-optic modulator（9d）, the second fibre optic attenuator（10d）, the 4th voltage controlled oscillator（19d）, the 4th
Arbitrary waveform generator（20d）, the 4th RF switch（21d）, the 4th power amplifier（22d）；
4th laser（1d）Exit end and the 4th fiber coupling loader（7d）Incidence end connection；4th fiber coupling is defeated
Enter device（7d）Exit end and the 4th spatial filter（8d）Incidence end connection；4th spatial filter（8d）Exit end with
4th optical fiber acousto-optic modulator（9d）Incidence end connection；4th optical fiber acousto-optic modulator（9d）Exit end decline with the second optical fiber
Subtract device（10d）Incidence end connection；4th voltage controlled oscillator（19d）Signal output end and the 4th arbitrary waveform generator
（20d）Signal output end with the 4th RF switch（21d）Signal input part connection；4th RF switch（21d）Letter
Number output end and the 4th power amplifier（22d）Signal input part connection；4th power amplifier（22d）Signal output end
With the 4th optical fiber acousto-optic modulator（9d）Signal input part connection；
The detection device includes optical filter（14）,50:50 non-polarizing beamsplitter（15）, binary channels single-photon detector
One channel（16）, binary channels single-photon detector second channel（17）, data acquisition and analysis system（18）；
First optical fiber acousto-optic modulator（9a）Exit end, the second optical fiber acousto-optic modulator（9b）Exit end, aperture
（13）Exit end, the second fibre optic attenuator（10d）Exit end and optical filter（14）Incidence end connection；Optical filter（14）
Exit end and 50:50 non-polarizing beamsplitter（15）Incidence end connection；50:50 non-polarizing beamsplitter（15）Two go out
Penetrate the end first passage with binary channels single-photon detector respectively（16）Incidence end and binary channels single-photon detector second
Channel（17）Incidence end connection；The first passage of binary channels single-photon detector（16）Signal output end and binary channels monochromatic light
The second channel of sub- detector（17）Signal output end and data acquisition and analysis system（18）Signal input part connection.
2. a kind of system for directly differentiating chaos light field Photon Statistical Properties according to claim 1, it is characterised in that：Institute
State first laser device（1a）, second laser（1b）, third laser（1c）, the 4th laser（1d）Being all made of central wavelength is
The LS-1550-SM type single mode semiconductor laser of 1550nm；The first optical fiber acousto-optic modulator（9a）, the second optical fiber acousto-optic
Modulator（9b）, third optical fiber acousto-optic modulator（9c）, the 4th optical fiber acousto-optic modulator（9d）Being all made of centre frequency is
The 165 FCAOM type optical fiber acousto-optic modulators of 165MHz；The convex lens（11）Focal length be 12mm；First voltage controlled oscillation
Device（19a）, the second voltage controlled oscillator（19b）, third voltage controlled oscillator（19c）, the 4th voltage controlled oscillator（19d）It is all made of ZOS-
200+ type voltage controlled oscillator；First arbitrary waveform generator（20a）, the second arbitrary waveform generator（20b）, third it is any
Waveform generator（20c）, the 4th arbitrary waveform generator（20d）It is all made of Agilent-33220A type arbitrary waveform generator；
First RF switch（21a）, the second RF switch（21b）, third RF switch（21c）, the 4th RF switch（21d）?
Using ZASWA-2-50DR+ type RF switch；First power amplifier（22a）, the second power amplifier（22b）, third
Power amplifier（22c）, the 4th power amplifier（22d）It is all made of ZHL-1-2W type power amplifier.
3. a kind of method for directly differentiating chaos light field Photon Statistical Properties, this method is straight in one kind as described in claim 1
It connects in the system for differentiating chaos light field Photon Statistical Properties and realizes, it is characterised in that：This method is realized using following steps：
Step 1：First laser device（1a）The laser of sending is successively through Polarization Controller（2）, optical fiber circulator（3）Into 80:20
Fiber coupler（4）, and through 80:20 fiber coupler（4）It is divided into two-way, wherein first via laser is successively through variable attenuation
Device（5）, optical fiber circulator（3）Return to first laser device（1a）, so that first laser device（1a）Issue chaotic laser light；First laser
Device（1a）The chaotic laser light of sending is successively through Polarization Controller（2）, optical fiber circulator（3）,80:20 fiber coupler（4）, light
Fibre coupling follower（6）, the first fiber coupling loader（7a）, the first spatial filter（8a）, the first optical fiber acousto-optic modulator
（9a）It is exported, thus generates continuous chaos light；
Step 2：Second laser（1b）The laser of sending is successively through the second fiber coupling loader（7b）, second space filter
（8b）, the second optical fiber acousto-optic modulator（9b）It is exported, thus generates continuous coherent light；
Step 3：Third laser（1c）The laser of sending is successively through third fiber coupling loader（7c）, third spatial filter
（8c）, third optical fiber acousto-optic modulator（9c）, the first fibre optic attenuator（10c）, convex lens（11）, rotation frosted glass（12）,
Aperture（13）It is exported, thus generates Continuous Heat light；
Step 4：4th laser（1d）The laser of sending is successively through the 4th fiber coupling loader（7d）, the 4th spatial filter
（8d）, the 4th optical fiber acousto-optic modulator（9d）, the second fibre optic attenuator（10d）It is exported；4th voltage controlled oscillator（19d）Hair
Radiofrequency signal and the 4th arbitrary waveform generator out（20d）The pulse signal of sending is through the 4th RF switch（21d）Into
4th power amplifier（22d）, and through the 4th power amplifier（22d）Obtain periodic radiofrequency signal, periodic radio frequency
Signal enters the 4th optical fiber acousto-optic modulator（9d）, so that through the 4th optical fiber acousto-optic modulator（9d）The laser of output becomes
Quasi- single photon；
Step 5：Continuous chaos light, continuous coherent light, Continuous Heat light, quasi- single photon are through optical filter（14）Into 50:50 it is non-
Polarization beam apparatus（15）, and through 50:50 non-polarizing beamsplitter（15）It is divided into the equal two-beam of intensity, two-beam passes through double respectively
The first passage of channel one-photon detector（16）With the second channel of binary channels single-photon detector（17）It is acquired into data
Analysis system（18）, data acquisition and analysis system（18）Coincidence counting between two-beam is detected；At this point, changing bilateral
The first passage of road single-photon detector（16）With the second channel of binary channels single-photon detector（17）Between relative delay
Time, and by data acquisition and analysis system（18）Coincidence counting between two-beam under different relative delays is visited
It surveys, the second order coherence degree curve and theory analysis of continuous chaos light, continuous coherent light, Continuous Heat light, quasi- single photon can be obtained
Curve；
Step 6：First voltage controlled oscillator（19a）The radiofrequency signal of sending and the first arbitrary waveform generator（20a）The arteries and veins of sending
Signal is rushed through the first RF switch（21a）Into the first power amplifier（22a）, and through the first power amplifier（22a）It obtains
Periodic radiofrequency signal is obtained, periodic radiofrequency signal enters the first optical fiber acousto-optic modulator（9a）, so that through first
Optical fiber acousto-optic modulator（9a）The continuous chaos light of output becomes pulse chaos light；
Step 7：Second voltage controlled oscillator（19b）The radiofrequency signal of sending and the second arbitrary waveform generator（20b）The arteries and veins of sending
Signal is rushed through the second RF switch（21b）Into the second power amplifier（22b）, and through the second power amplifier（22b）It obtains
Periodic radiofrequency signal is obtained, periodic radiofrequency signal enters the second optical fiber acousto-optic modulator（9b）, so that through second
Optical fiber acousto-optic modulator（9b）The continuous coherent light of output becomes pulse coherence light；
Step 8：Third voltage controlled oscillator（19c）The radiofrequency signal and third arbitrary waveform generator of sending（20c）The arteries and veins of sending
Signal is rushed through third RF switch（21c）Into third power amplifier（22c）, and through third power amplifier（22c）It obtains
Periodic radiofrequency signal is obtained, periodic radiofrequency signal enters third optical fiber acousto-optic modulator（9c）, so that through third
Optical fiber acousto-optic modulator（9c）The Continuous Heat light of output becomes pulse heat light；
Step 9：Pulse chaos light, pulse coherence light, pulse heat light are through optical filter（14）Into 50:50 non-polarizing beamsplitter
（15）, and through 50:50 non-polarizing beamsplitter（15）It is divided into the equal two-beam of intensity, two-beam is respectively through binary channels single photon
The first passage of detector（16）With the second channel of binary channels single-photon detector（17）Into data acquisition and analysis system
（18）, data acquisition and analysis system（18）Coincidence counting between two-beam is detected；At this point, changing binary channels single photon
The first passage of detector（16）With the second channel of binary channels single-photon detector（17）Between relative delay, and by
Data acquisition and analysis system（18）Coincidence counting between two-beam under different relative delays is detected, can be obtained
Pulse chaos light, pulse coherence light, pulse heat light second order coherence degree curve and theory analysis curve.
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| CN108398192B (en) * | 2018-02-08 | 2020-07-28 | 太原理工大学 | System for accurately measuring coherence time of chaotic light field by utilizing high-speed time-to-time conversion |
| CN108712212B (en) * | 2018-05-09 | 2020-08-28 | 太原理工大学 | Chaotic signal generation method and device based on non-deterministic quantum noise |
| CN109638641B (en) * | 2019-01-25 | 2021-04-02 | 太原理工大学 | Method and device for eliminating speckles in laser display by using chaotic circuit modulation laser |
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