CN106647102B - Ultrahigh speed digital-analog convertion method and device based on optical time domain compression - Google Patents
Ultrahigh speed digital-analog convertion method and device based on optical time domain compression Download PDFInfo
- Publication number
- CN106647102B CN106647102B CN201611223440.9A CN201611223440A CN106647102B CN 106647102 B CN106647102 B CN 106647102B CN 201611223440 A CN201611223440 A CN 201611223440A CN 106647102 B CN106647102 B CN 106647102B
- Authority
- CN
- China
- Prior art keywords
- time domain
- optical
- data compression
- signal
- broadening
- 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.)
- Active
Links
- 230000003287 optical effect Effects 0.000 title claims abstract description 64
- 238000007906 compression Methods 0.000 title claims abstract description 20
- 230000006835 compression Effects 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000013144 data compression Methods 0.000 claims abstract description 37
- 238000006243 chemical reaction Methods 0.000 claims abstract description 28
- 239000006185 dispersion Substances 0.000 claims description 9
- 238000007493 shaping process Methods 0.000 claims description 6
- 230000001934 delay Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000003111 delayed effect Effects 0.000 claims description 2
- 238000005070 sampling Methods 0.000 abstract description 7
- 239000002609 medium Substances 0.000 description 16
- 238000005516 engineering process Methods 0.000 description 7
- 239000013307 optical fiber Substances 0.000 description 6
- 238000004891 communication Methods 0.000 description 4
- 238000001228 spectrum Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000005611 electricity Effects 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 210000001367 artery Anatomy 0.000 description 2
- 229920005994 diacetyl cellulose Polymers 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 230000005622 photoelectricity Effects 0.000 description 2
- 238000004080 punching Methods 0.000 description 2
- 210000003462 vein Anatomy 0.000 description 2
- 238000001069 Raman spectroscopy Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 239000002612 dispersion medium Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000000644 propagated effect Effects 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02F—OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS
- G02F7/00—Optical analogue/digital converters
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Optics & Photonics (AREA)
- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
- Optical Communication System (AREA)
Abstract
The invention discloses a kind of ultrahigh speed digital-analog convertion methods based on optical time domain compression.Ultrashort light pulse is subjected to time domain broadening first, obtains chirped optical pulse；Then the analog electrical signal that electronics digital analog converter exports is modulated on the chirped optical pulse by electro-optic intensity modulator；Time domain data compression is carried out to light pulse signal after modulation；The optical signal after time domain data compression is finally subjected to photoelectric conversion, obtains compressed analog electrical signal in the time domain.The invention also discloses a kind of ultrahigh speed digiverters based on optical time domain compression.Compared with prior art, the present invention can be obtained the DAC output of higher sampling rate without high speed electronic switch, while keep biggish significant bit digit.
Description
Technical field
The present invention relates to a kind of digital-analog convertion method more particularly to a kind of ultrahigh speed digital-to-analogue conversions based on optical time domain compression
Method and device.
Background technique
Digital analog converter (DAC) has in fields such as communication, radar, electronic warfare, electronic system tests to be widely applied, and device is adopted
Sample rate and conversion accuracy largely determine the performance of system above.Currently, the sampling rate of single channel electronic DAC
Several girz can be reached (referring to [S.Randel, et al., " Generation of a digitally shaped 55-
GBd 64-QAM single-carrier signal using novel high-speed DACs,”paper.M2A.3,
Optical Fiber Communication Conf.and Exposition 2014.]).Although and the sample rate of photon DAC
It is able to achieve > the sample rate of 50GHz, but the bandwidth of modulator seriously limits the performance of system (referring to [Antonella
Bogoni,Xiaoxia Wu“160Gb/s All-Optical Binary-to-Quaternary Amplitude Shift
Keying Format Conversion,”Optical Fiber Communication Conference and
Exposition(OFC/NFOEC),pp.1-3,March,2011]).With the fast development of high-frequency wideband system, single channel
The sampling rate of DAC has been unable to meet many application demands, for example, next-generation transmission rate is the relevant of 400Gb/s or 1Tb/s
Optical communication system there is an urgent need to sample rate be more than the DAC of 40GSa/s generate the quadrature amplitude modulation signal of more level (referring to
[C.Laperle and M.O’Sullivan,“Advances in high-speed DACs,ADCs,and DSP for
optical coherent transceivers,”Journal of Lightwave Technology,vol.31,no.23,
pp.3780-3786,Dec.2013.])。
Multichannel DAC structure is a kind of means of common sampling rate for promoting DAC, it utilizes time-multiplexed original
Reason, by the low speed DAC output signal in multiple channels in time-domain multiplexed, can construct the DAC of high speed.Multi-pass based on electronic technology
Road DAC generallys use high-speed switch and switches between multi-path low speed DAC output signal, and different moments is made to export different low speed
The information of DAC.Due to the product that the switching rate of high-speed switch is low speed DAC sample rate and number of active lanes, this method is to electricity
The requirement of sub switch rate is high, causes the room for promotion of DAC sampling rate very limited.In addition, when existing for high-velocity electrons
The disadvantages of jitter is big, anti-electromagnetic interference capability is poor also limits the performance using this multichannel DAC system.On the other hand,
Although the sample rate of DAC can be greatly improved using photon technology, it is difficult to keep the higher significant bit digit of electric DAC.
Therefore, multichannel DAC structure how is improved to the promotion upper limit of sample rate and is improved its performance very significant.
Summary of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and to provide a kind of based on optical time domain compression
Ultrahigh speed digital-analog convertion method and device can be obtained the DAC output of higher sampling rate without high speed electronic switch, protect simultaneously
Hold biggish significant bit digit.
The present invention specifically uses following technical scheme to solve above-mentioned technical problem:
Based on the ultrahigh speed digital-analog convertion method of optical time domain compression, ultrashort light pulse is subjected to time domain broadening first, is obtained
Chirped optical pulse；Then the analog electrical signal that electronics digital analog converter exports is modulated to the Zhou by electro-optic intensity modulator
It sings in light pulse；Time domain data compression is carried out to modulated light pulse signal；The optical signal after time domain data compression is finally subjected to photoelectricity
Conversion, obtains compressed analog electrical signal in the time domain.
Optical Time Division Multiplexing Technology is combined on the basis of above scheme, and following technical scheme also can be obtained:
Based on the ultrahigh speed digital-analog convertion method of optical time domain compression, ultrashort light pulse is subjected to time domain broadening first, is obtained
Chirped optical pulse is simultaneously classified as multichannel；To the mould per chirped optical pulse all the way, respectively exported an electronics digital analog converter
Quasi- electric signal is modulated thereon by electro-optic intensity modulator, and the modulated light pulse signal in the road Bing Duige applies different delays
After merge；Time domain data compression is carried out to light pulse signal after merging；The optical signal after time domain data compression is finally carried out photoelectricity to turn
It changes, obtains the analog electrical signal for being compressed and being had big time width in the time domain.
The time domain broadening and time domain data compression can be by various existing or realize the technological means having, it is preferable that described
Time domain broadening and time domain data compression are realized by the dispersion interaction of dispersive medium, and time domain broadening and the used color of time domain data compression
The abbe number value symbol of dispersion media is opposite.
Following two ultrahigh speed digiverter can also be obtained according to identical invention thinking:
Ultrahigh speed digiverter based on optical time domain compression, comprising:
Light source, for exporting ultrashort light pulse；
Time domain broadening unit carries out time domain broadening for the ultrashort light pulse to light source output, to obtain chirped light arteries and veins
Punching；
Electronics digital analog converter, for digital electric signal to be converted to analog electrical signal；
Electro-optic intensity modulator, the analog electrical signal for exporting electronics digital analog converter are modulated to time domain broadening unit
On the chirped optical pulse of output；
Time domain data compression unit, light pulse signal carries out time domain data compression after the modulation for exporting electro-optic intensity modulator；
Photodetector, the optical signal after the time domain data compression for exporting to time domain compression unit carry out photoelectric conversion, obtain in time domain
Upper compressed analog electrical signal.
Ultrahigh speed digiverter based on optical time domain compression, comprising:
Light source, for exporting ultrashort light pulse；
Time domain broadening unit carries out time domain broadening for the ultrashort light pulse to light source output, to obtain chirped light arteries and veins
Punching；
Optical splitter, the chirped optical pulse for exporting time domain broadening unit are divided into multichannel；
One group of electronics digital analog converter, quantity is identical as the number that chirped optical pulse divides, for respectively by digital electricity
Signal is converted to analog electrical signal；
One group of electro-optic intensity modulator, quantity is identical as electronics digital analog converter quantity and corresponds, for distinguishing
The analog electrical signal that corresponding electronics digital analog converter exports is modulated on chirped optical pulse all the way；
One group of delay line, for applying different delays to the modulated light pulse signal in each road；
Photo-coupler, for that will be delayed, the modulated light pulse signal in the road Hou Ge is merged；
Time domain data compression unit carries out time domain data compression for the light pulse signal after merging；
Photodetector, the optical signal after the time domain data compression for exporting to time domain compression unit carry out photoelectric conversion, obtain
To the analog electrical signal for being compressed and being had big time width in the time domain.
Preferably, the time domain broadening unit, time domain data compression unit are dispersive medium, and the abbe number value of the two accords with
It is number opposite.
Further, the device further include:
Optical band pass filter is connected between light source and time domain broadening unit, for the ultrashort light pulse to light source output into
Row frequency spectrum shaping.
Compared with prior art, technical solution of the present invention has the advantages that
1) present invention realizes superfast digital-to-analogue conversion using photon technology, without the switching device of high speed, reduces and is
The requirement united to high speed device, is able to achieve the DAC of higher rate；
2) present invention utilizes the time domain data compression of pulse, by the pulse signal of low speed digital-to-analogue conversion modulates information after the stretch
On, then the time domain width of pulse is compressed, so that the DAC output of higher rate can be realized；
3) present invention can use Optical Time Division Multiplexing Technology, be multiplexed multiple signals in the time domain, thus extend signal when
Field width degree；
4) since low -velocity electron DAC has very high significant bit digit, i.e. the precision of generation waveform is high, and this programme passes through
Time domain data compression is carried out to the output of low -velocity electron DAC, is expected to keep higher significant bit digit, the accuracy of waveform of generation is high.
Detailed description of the invention
Fig. 1 is the principle schematic diagram of one specific embodiment of ultrahigh speed digiverter of the present invention；
Fig. 2 is the principle steps schematic diagram of ultrahigh speed digiverter of the present invention；
Fig. 3 is the structure principle chart of another specific embodiment of ultrahigh speed digiverter of the present invention.
Specific embodiment
Technical solution of the present invention is described in detail with reference to the accompanying drawing:
The purpose of the present invention is: the promotion for realizing digital-to-analogue conversion sample rate is compressed using optical time domain to overcome electronics multichannel
The problem of DAC sampling rate is limited by high-speed switching devices, basic ideas of the invention are: first by ultrashort light pulse in time domain
The output signal of the electronics digital analog converter of upper low speed is modulated after stretching by electrooptic modulator；Then by modulated optical signal
Time domain data compression is carried out, the low speed telecommunication number that light pulse envelope carries also is compressed in time；Finally by compressed optical signal
Photoelectric conversion is carried out by photodetector, obtains the output signal of ultrahigh speed digital-to-analogue conversion.
It is further detailed to be carried out to it with a specific embodiment below for the ease of public understanding technical solution of the present invention
It describes in detail bright.
Fig. 1 shows the structural principle of one specific embodiment of ultrahigh speed digiverter of the present invention.As shown in Figure 1,
The device includes: two, a ultrashort pulse laser, an optical band pass filter, dispersive medium one, dispersive medium low speed
DAC, an electrooptic modulator, a photodetector.Wherein, ultrashort pulse laser can produce the ultrashort pulse of femtosecond magnitude
Sequence；The dispersion values of dispersive medium one are D1；The dispersion values of dispersive medium two are D2(symbol of dispersion values and one phase of dispersive medium
Instead).
The ultrashort light pulse that ultrashort pulse laser generates carries out frequency spectrum shaping by optical band pass filter, thus available
Flat spectrum；After dispersive medium one, grown due to Different lightwave has difference in dispersive medium for light pulse after shaping
Speed is propagated, and the time explanation of pulse is resulted in, and generates chirped pulse signal；The output waveform signals of low speed DAC pass through electric light
Modulator is modulated on chirped pulse signal, forms modulated optical signal；Modulated optical signal carries out time domain by dispersive medium two
Compression, the low speed telecommunication number carried with optical pulse envelope is also compressed in time, to obtain high-speed digital-analog conversion signal；
Electric signal is converted optical signals in the high-speed digital-analog conversion signal input photodetector, can be obtained and pressed in the time domain
The electric signal waveform of contracting exports.
Fig. 2 is the principle steps schematic diagram of high-speed digital-analog conversion equipment.As shown in Fig. 2, what ultrashort pulse laser issued
Ultrashort light pulse obtains flat spectrum after optical band pass filter (such as waveshaper), as shown in A point in Fig. 2.Shaping
Optical signal afterwards passes through (the dispersion values D of dispersive medium one1, length L1), group velocity dispersion effect makes wavelength in dispersive medium one
In propagate at different rates, this process, which results in light pulse and broadens in time, forms chirped pulse signal, such as B in Fig. 2
Shown in point.It should be noted that the width after pulse broadening should be less than the inverse of its repetition rate.Then, chirped pulse is logical
The output waveform signals (sample rate fGS/s) that electrooptic modulator modulates upper low speed DAC are crossed, as shown in C point in Fig. 2.After modulation
Signal be sent into dispersive medium two in (dispersion values D2, length L2), wherein D2With D1Symbol is opposite.By dispersive medium two
After effect, chirp signal is compressed in the time domain, compression multiple are as follows:
The low speed telecommunication number carried with optical pulse envelope is also compressed in time, as shown in D point in Fig. 2.Finally, should
Signal can be obtained by the output signal of high-speed digital-analog conversion after electro-optic conversion, as shown in E point in Fig. 2.The digital-to-analogue of output
The sample rate of conversion signal is Mxf, M times of as former sample rate.
Present invention preferably employs dispersive optical fibers to realize time domain broadening and time domain data compression.On the one hand, dispersive optical fiber cost compared with
Low, on the other hand, dispersive optical fiber can be used as the gain media of light amplification, can reduce digital-to-analogue conversion in conjunction with fiber Raman amplification
Noise accumulation in journey, greatly improves the signal-to-noise ratio of signal, to improve the significant bit digit of digital-to-analogue conversion.
The sample rate of existing DAC can be improved more times by device proposed by the present invention, and the multiple of raising can be adjusted flexibly.
It should be noted that the expanded reach of sample rate is finally limited by the bandwidth of photodetector and ultrashort pulse source.But mesh
The bandwidth of preceding photodetector can achieve Terahertz, and if you do not need to high-speed digital-analog conversion signal is transformed into electricity
If domain, photodetector will not limit the upper limit of program sample rate.Meanwhile it being put using dispersive optical fiber combination fiber Raman
Big mechanism realizes distributed air-defense while time domain stretches or compresses, and can greatly improve the signal-to-noise ratio of system, reduces
The influence of noise and non-linear logistic mould conversion performance guarantees that the high-speed digital-analog conversion signal of output has biggish significant bit
Digit.
The present invention can also combine above scheme with Optical Time Division Multiplexing Technology, thus while greatly improving sample rate
Further expand output waveform time width.The structural principle of the device is as shown in Figure 3.As shown in figure 3, the chirp signal generated
Multichannel is divided by photo-coupler (or optical splitter), then modulate the waveform signal of upper low speed DAC output respectively and introduces the time
Delay.Signal synthesis after multichannel process is re-fed into dispersive medium two afterwards all the way and carries out time domain data compression.It should be noted that
The time delays after the modulation of appropriate adjustment every road between signal are wanted, to guarantee after dispersive medium two no overlap between each signal
And it is continuous in time.Finally, compressed signal carries out photoelectric conversion by photodetector, obtain being compressed in the time domain
Electric signal, the waveform of the signal is the merging of all low speed DAC output waveforms in the time domain.
Claims (10)
1. the ultrahigh speed digital-analog convertion method based on optical time domain compression, which is characterized in that ultrashort light pulse is carried out time domain first
Broadening, obtains chirped optical pulse；Then analog electrical signal electronics digital analog converter exported passes through electro-optic intensity modulator tune
It is formed on the chirped optical pulse；Time domain data compression is carried out to modulated light pulse signal；Finally the light after time domain data compression is believed
Number carry out photoelectric conversion, obtain compressed analog electrical signal in the time domain.
2. method as described in claim 1, which is characterized in that the time domain broadening and time domain data compression pass through the color of dispersive medium
Scattered effect is to realize, and time domain broadening is opposite with the abbe number value symbol of the used dispersive medium of time domain data compression.
3. the ultrahigh speed digital-analog convertion method based on optical time domain compression, which is characterized in that ultrashort light pulse is carried out time domain first
Broadening, obtains chirped optical pulse and is classified as multichannel；To every chirped optical pulse all the way, respectively by an electronics digital analog converter
The analog electrical signal of output is modulated thereon by electro-optic intensity modulator, and the modulated light pulse signal in the road Bing Duige applies not
It is merged after same delay；Time domain data compression is carried out to light pulse signal after merging；Finally by the optical signal after time domain data compression into
Row photoelectric conversion obtains the analog electrical signal for being compressed and being had big time width in the time domain.
4. method as claimed in claim 3, which is characterized in that the time domain broadening and time domain data compression pass through the color of dispersive medium
Scattered effect is to realize, and time domain broadening is opposite with the abbe number value symbol of the used dispersive medium of time domain data compression.
5. the ultrahigh speed digiverter based on optical time domain compression characterized by comprising
Light source, for exporting ultrashort light pulse；
Time domain broadening unit carries out time domain broadening for the ultrashort light pulse to light source output, to obtain chirped optical pulse；
Electronics digital analog converter, for digital electric signal to be converted to analog electrical signal；
Electro-optic intensity modulator, the analog electrical signal for exporting electronics digital analog converter are modulated to the output of time domain broadening unit
Chirped optical pulse on；
Time domain data compression unit, light pulse signal carries out time domain data compression after the modulation for exporting electro-optic intensity modulator；
Photodetector, the optical signal after the time domain data compression for exporting to time domain compression unit carry out photoelectric conversion, obtain
Compressed analog electrical signal in time domain.
6. device as claimed in claim 5, which is characterized in that the time domain broadening unit, time domain data compression unit are that dispersion is situated between
Matter, and the abbe number value symbol of the two is opposite.
7. such as claim 5 or 6 described devices, which is characterized in that its further include:
Optical band pass filter is connected between light source and time domain broadening unit, carries out frequency for the ultrashort light pulse to light source output
Compose shaping.
8. the ultrahigh speed digiverter based on optical time domain compression characterized by comprising
Light source, for exporting ultrashort light pulse；
Time domain broadening unit carries out time domain broadening for the ultrashort light pulse to light source output, to obtain chirped optical pulse；
Optical splitter, the chirped optical pulse for exporting time domain broadening unit are divided into multichannel；
One group of electronics digital analog converter, quantity is identical as the number that chirped optical pulse divides, for respectively by digital electric signal
Be converted to analog electrical signal；
One group of electro-optic intensity modulator, quantity is identical as electronics digital analog converter quantity and corresponds, for respectively by institute
The analog electrical signal of corresponding electronics digital analog converter output is modulated on chirped optical pulse all the way；
One group of delay line, for applying different delays to the modulated light pulse signal in each road；
Photo-coupler, for that will be delayed, the modulated light pulse signal in the road Hou Ge is merged；
Time domain data compression unit carries out time domain data compression for the light pulse signal after merging；
Photodetector, the optical signal after the time domain data compression for exporting to time domain compression unit carry out photoelectric conversion, obtain
The analog electrical signal of big time width is compressed and had in time domain.
9. device as claimed in claim 8, which is characterized in that the time domain broadening unit, time domain data compression unit are that dispersion is situated between
Matter, and the abbe number value symbol of the two is opposite.
10. such as claim 8 or 9 described devices, which is characterized in that its further include:
Optical band pass filter is connected between light source and time domain broadening unit, carries out frequency for the ultrashort light pulse to light source output
Compose shaping.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223440.9A CN106647102B (en) | 2016-12-27 | 2016-12-27 | Ultrahigh speed digital-analog convertion method and device based on optical time domain compression |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611223440.9A CN106647102B (en) | 2016-12-27 | 2016-12-27 | Ultrahigh speed digital-analog convertion method and device based on optical time domain compression |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106647102A CN106647102A (en) | 2017-05-10 |
| CN106647102B true CN106647102B (en) | 2019-05-24 |
Family
ID=58832851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611223440.9A Active CN106647102B (en) | 2016-12-27 | 2016-12-27 | Ultrahigh speed digital-analog convertion method and device based on optical time domain compression |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106647102B (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108880695B (en) * | 2018-07-19 | 2020-06-23 | 浙江大学 | Photon continuous time compression device and method thereof |
| CN109450547B (en) * | 2018-10-17 | 2021-06-15 | 贵州大学 | Broadband signal processing method and system |
| CN109981198B (en) * | 2019-04-10 | 2020-05-01 | 北京邮电大学 | Broadband radio frequency spectrum sensing method and system based on multimode optical fiber |
| CN112217564B (en) * | 2019-07-09 | 2022-04-01 | 中国海洋大学 | Pulse position modulation laser communication method based on chirped fiber grating |
| CN111614402B (en) * | 2020-04-23 | 2022-06-14 | 复旦大学 | Terahertz PAM-4 signal generation system and method based on binary driving single modulator |
| CN111208690B (en) * | 2020-04-23 | 2020-07-21 | 光子算数(北京)科技有限责任公司 | Optical digital-to-analog converter, signal processing system and photonic neural network chip |
| CN111610366B (en) * | 2020-05-15 | 2021-10-08 | 南京航空航天大学 | Broadband microwave measurement method and device based on ultrafast optical frequency sweep |
| CN113219760B (en) * | 2021-04-28 | 2022-08-23 | 杭州电子科技大学 | Digital-to-analog conversion method and system based on spectrum shaping |
| CN113660036B (en) * | 2021-09-23 | 2022-09-13 | 南京航空航天大学 | Method and device for measuring time-frequency characteristics of microwave signals |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676787A (en) * | 2008-09-17 | 2010-03-24 | 中国科学院半导体研究所 | Optical pulse time domain broadening analog-to-digital converter |
| CN102722059A (en) * | 2012-06-14 | 2012-10-10 | 电子科技大学 | All-optical quantification system and method based on dynamic spectrum compression |
| CN105467717A (en) * | 2016-01-20 | 2016-04-06 | 电子科技大学 | Microwave signal optical analog-digital conversion method and device based on time stretching |
| CN105842952A (en) * | 2016-03-11 | 2016-08-10 | 成都卓力致远科技有限公司 | Method and device improving microwave signal time stretching linearity |
-
2016
- 2016-12-27 CN CN201611223440.9A patent/CN106647102B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101676787A (en) * | 2008-09-17 | 2010-03-24 | 中国科学院半导体研究所 | Optical pulse time domain broadening analog-to-digital converter |
| CN102722059A (en) * | 2012-06-14 | 2012-10-10 | 电子科技大学 | All-optical quantification system and method based on dynamic spectrum compression |
| CN105467717A (en) * | 2016-01-20 | 2016-04-06 | 电子科技大学 | Microwave signal optical analog-digital conversion method and device based on time stretching |
| CN105842952A (en) * | 2016-03-11 | 2016-08-10 | 成都卓力致远科技有限公司 | Method and device improving microwave signal time stretching linearity |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106647102A (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106647102B (en) | Ultrahigh speed digital-analog convertion method and device based on optical time domain compression | |
| CN105467717B (en) | A kind of microwave signal optics D conversion method and device based on time-stretching | |
| CN106990642B (en) | Optical analog to digital conversion device based on modulator multichannel demultiplexing | |
| Soto et al. | Generation of Nyquist sinc pulses using intensity modulators | |
| CN111884727B (en) | High-speed photon digital-to-analog conversion method and system based on digital mapping | |
| US20090257344A1 (en) | All optical ofdm with integrated coupler based ifft/fft and pulse interleaving | |
| Gao et al. | Experimental demonstration of arbitrary waveform generation by a 4-bit photonic digital-to-analog converter | |
| CN102013924A (en) | Device and method for generating frequency doubling single side band optical carrier millimeter waves | |
| CN103888192B (en) | The photoelectricity generator of a kind of wavelength-division multiplex wideband correlation and method thereof | |
| CN110716366B (en) | Photoelectric mixed analog-digital conversion method and system based on optical delay | |
| Liao et al. | A time-domain photonic arbitrary waveform generator | |
| CN110995270A (en) | Sectional type photon digital-to-analog converter and waveform generation method thereof | |
| CN110967892A (en) | MZM-EAM cascade and pulse signal-based optical frequency comb generation device and method | |
| CN108259090B (en) | Radio frequency arbitrary waveform light generation method and system based on digital logic operation | |
| CN107135005B (en) | Ultra-wideband signal multi-path parallel compression sampling method based on photoelectric combination | |
| Zhang et al. | Analog-to-digital converters using photonic technology | |
| Hu et al. | Flexible width nyquist pulse based on a single Mach-Zehnder modulator | |
| Chou et al. | 150 GS/s real-time oscilloscope using a photonic front end | |
| Raybon et al. | High symbol rate transmission systems for data rates above 400 Gb/s using ETDM transmitters and receivers | |
| CN103780307B (en) | A kind of system and method that produces Optical Sampling pulse train | |
| CN108242759A (en) | A kind of Semiconductor laser equipment | |
| Scotti et al. | High precision photonic ADC with four time-domain-demultiplexed interleaved channels | |
| CN111679530B (en) | Photon time delay stretching analog-to-digital conversion method and system based on radio frequency signal | |
| Leuthold et al. | All-optical pulse shaping for highest spectral efficiency | |
| GB2540744A (en) | Photonic Digital-to-Analogue Converter |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |