CN103455306A - Double-line parallel high-speed random number generating device based on semiconductor ring laser - Google Patents
Double-line parallel high-speed random number generating device based on semiconductor ring laser Download PDFInfo
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- CN103455306A CN103455306A CN2013104135925A CN201310413592A CN103455306A CN 103455306 A CN103455306 A CN 103455306A CN 2013104135925 A CN2013104135925 A CN 2013104135925A CN 201310413592 A CN201310413592 A CN 201310413592A CN 103455306 A CN103455306 A CN 103455306A
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Abstract
The invention discloses a double-line parallel high-speed random number generating device based on a semiconductor ring laser. Two crossed feedback loops are introduced into the semiconductor ring laser to adjust feedback time delay and feedback intensity reasonably, so that the semiconductor ring laser outputs two lines of high-dimensional chaotic signals and sends the signals into two photoelectric detectors; a high-speed oscilloscope is utilized to sample the two lines of high-dimensional chaotic signals and covert the signals into floating-point number chaotic signals with the bit resolution of 52 (or above); the two lines of chaotic signals are subjected to higher difference treatment respectively, and multiple least significant bits are extracted, so as to obtain the double-line parallel high-speed random number finally. The double-line parallel high-speed random number generating device has a simple structure, is easy to control, and can generate a random number sequence of Tb/s magnitude without complicated follow-up treatment.
Description
Technical field
The present invention relates to a kind of two-way parallel high-speed random number generating apparatus of based semiconductor ring laser, be applicable to the fields such as secret communication, digital signature and computer simulation, be specifically related to a kind of random code production method based on cross feedback semiconductor ring laser device.
Background technology
The random number background that is commonly employed, as in fields such as secret communication, probabilistic model, digital signature and high-speed numerical simulations.Common random number generator has two kinds: a kind of Pseudo-random number generator that is based on the determinacy complicated algorithm; Another kind is based on the physical random number maker of certain chance phenomenon.The former speed is fast, but security is low; The latter is safe, but speed can only reach the Mb/s magnitude.
The one's own views report shows that the laser chaos signal can be used as the physical entropy source and can generate the high-speed physical random number.Physical random number maker based on this type of laser chaos has characteristics safe and reliable and high speed simultaneously, and its existing speed can reach hundreds of Gb/s.Wherein, luminous with counterclockwise both direction clockwise thereby novel semiconductor ring laser utensil has unique ring cavity to support simultaneously.In addition, the semiconductor ring laser utensil has that volume is little, cost is low, the integrated level advantages of higher.Therefore, by suitable feedback condition, the semiconductor ring laser device can produce the laser chaos signal of two-way " approximate independent ", and then generates the high speed random number as outstanding physical entropy source.Formerly technology [1] is (referring to R.M.Nguimdo, et al.Fast random bits generation based on a single chaotic semiconductor ring laser, Opt.Express2012) a kind of method of utilizing self feed back semiconductor ring laser device to produce the high-speed physical random number disclosed.Specifically, the two-way chaotic signal, by sampling, quantizes, coding, and extract 4 least significant bit (LSB)s generation random numbers, finally the two-way random number is obtained to the high-quality physical random number in a road by the step-by-step xor operation.But, this scheme subsequent treatment complexity of one side; On the other hand, if can make its two-way chaotic signal produce respectively two-way high-speed physical random number, will more fully effectively utilize the physical entropy source, have a extensive future.Formerly technology [2] is (referring to Symmetrization of single-sided or nonsymmetrical distributions:The way to enhance a generation rate of random bits from a physical source of randomness, Phys.Rev.E2010) a kind of method that can high efficiency extraction multidigit least significant bit (LSB) is disclosed, its principle is the floating number that the physical accidental source data that will have asymmetric probability distribution converts 52 bit resolutions to, by calculating higher difference, obtain having the data of highly symmetrical probability distribution, thereby each data point is extracted to 45 least significant bit (LSB)s, the final random number that generates.Its weak point is that its correlation noise entropy source bandwidth is too low, makes final speed also can only reach the Mb/s magnitude.And the method fails laser chaos physical entropy source is promoted and verified.
Summary of the invention
In view of the deficiency of the prior art of above statement, the present invention aims to provide a kind of device and method that generates the parallel high speed random number of two-way based on the novel semi-conductor ring laser.
The two-way parallel high-speed random number generating apparatus of a kind of based semiconductor ring laser provided by the invention comprises semiconductor ring laser device, semiconductor optical amplifier, optical circulator, photo-coupler, fibre delay line, photodetector, high-speed figure oscillograph.Wherein the high-speed figure oscillograph can substitute with analog to digital converter.
The present invention realizes by the following technical solutions.
A kind of two-way parallel high-speed random number generating apparatus of based semiconductor ring laser, it is characterized in that adopting the higher difference technology, and then allow the two-forty sampling and extract the multidigit least significant bit (LSB), realize that two-way high speed random number produces, and can take full advantage of stochastic source and have again the simple characteristics of subsequent treatment.Concrete treatment step comprises: by fibre delay line and semiconductor optical amplifier, introduce two cross feedback loops, regulate fibre delay line and the semiconductor optical amplifier in each loop, make the semiconductor ring laser device export clockwise the multi-dimension Chaos signal of two-way " approximate independent " with counter clockwise direction respectively; Utilize two photodetectors to detect respectively the two-way chaotic signal and send into oscillographic two passages of high-speed figure; The two-way chaotic signal that will obtain from oscillograph is converted into the floating number of 52 bit resolution and carries out respectively the higher difference computing; The data point of each road signal is only extracted to 40 least significant bit (LSB)s and form random number sequence.
The two-way parallel high-speed random number generating apparatus of a kind of based semiconductor ring laser that the present invention proposes and formerly technology comparison have the following advantages:
1. utilize a semiconductor ring laser device and existing communication system device commonly used, low cost, be easy to realize.
2. subsequent treatment is simple, only comprises that higher difference computing and least significant bit (LSB) extract.
3. systematic parameter is had to the height robustness, allow the two-forty sampling.
4. can produce the parallel high speed random number of two-way.
The accompanying drawing explanation
The system chart that Fig. 1 is two-way high speed random number device of the present invention.
Fig. 2 is the two-dimensional diagram of a road random number sequence wherein.
The statistic bias (left side) that Fig. 3 is a wherein road 10Gb random number sequence and serial correlation coefficient (right side).
Embodiment
As shown in Figure 1, be the system chart of the two-way parallel high-speed random number generating apparatus of based semiconductor ring laser of the present invention, this device can be realized the generation of two-way parallel high-speed random number, its synthesis rate can reach the Tb/s magnitude.
In Fig. 1, a semiconductor ring laser device is realized the output of two-way chaotic signal by two cross feedback loops, and the clockwise direction mould feeds back to counterclockwise mould, and counterclockwise mould feeds back to the clockwise direction mould simultaneously; Every backfeed loop has comprised fibre delay line, circulator, a semiconductor optical amplifier has been arranged, and wherein semiconductor optical amplifier is for regulating feedback intensity.By suitable fibre delay line and the reasonable feedback intensity of regulating, two-way chaotic signal degree of correlation is very little, can regard the physical entropy source of " approximate independent " as.At first, the two-way chaotic signal is sent into respectively the photodetector of two high speeds, then the two-way chaos electric signal that the photodetector photoelectric conversion is obtained sends into oscillographic two passages of high-speed figure, and sampling rate is 20GHz.Secondly, the oscillograph sampling signal that also analog to digital conversion obtains is converted into to the floating number chaotic signal of 52 bit resolution, wherein a road chaotic signal carries out the difference processing on 45 rank, and another road chaotic signal carries out the difference processing on 47 rank; The two-way chaotic signal adopts the difference processing of different rank further to reduce the correlativity of two paths of signals.Finally, two paths of signals extracts respectively 40 least significant bit (LSB)s and generates the high speed random number, and wherein the speed of each road random number sequence is 800Gb/s.Therefore, the synthetic effective speed of the parallel random number of two-way is 1.6Tb/s.
Fig. 2 is the two-dimensional distribution of a road random number sequence wherein.We select continuous in a road random number sequence 90000 scale-of-two random codes mapping, 1 point that is black wherein, and 0 is white point, and 90000 points are with from left to right in Fig. 2, and order from top to bottom draws successively.In these 90000 scale-of-two random codes, 1 probability occurred is that 0.4991,0 probability occurred is 0.5009.The random number that the method for utilizing the present invention to introduce produces can be crossed by existing random number test pack, and statistic bias and serial correlation coefficient are limited to negligible scope.As shown in Figure 3, the statistic bias of the random number of 10Gb (left side) and serial correlation coefficient (right side) meet the condition of three times of standard deviations, wherein σ
b=0.5N
-05, σ
c=N
-05, N=10Gb is random number sequence length.
Above stated be only a kind of embodiment of apparatus of the present invention; should be understood that; under the prerequisite that does not break away from apparatus of the present invention essence; in implementing, reality can make some changes (such as the single channel chaos entropy source of only realizing the single channel cross feedback; utilize the integrated chip circuit; adopt the more difference processing of high-order, adopt the analog to digital converter of higher rate) also should be included in protection scope of the present invention.
Claims (4)
1. the two-way parallel high-speed random number generating apparatus of a based semiconductor ring laser, by the semiconductor ring laser device, semiconductor optical amplifier, optical circulator, photo-coupler, fibre delay line, photodetector and high-speed figure oscillograph form, wherein the high-speed figure oscillograph can substitute with analog to digital converter, it is characterized in that for by fibre delay line and semiconductor optical amplifier, introducing two cross feedback loops, regulate fibre delay line and the semiconductor optical amplifier in each loop, make the semiconductor ring laser device export clockwise the multi-dimension Chaos signal of two-way " approximate independent " with counter clockwise direction respectively, utilize two photodetectors to detect respectively the two-way chaotic signal and send into oscillographic two passages of high-speed figure, the two-way chaotic signal that will obtain from oscillograph is converted into the floating number chaotic signal of 52 bit resolution and carries out respectively the higher difference processing, the data point of each road signal is only extracted to 40 least significant bit (LSB)s and finally generate random number sequence.
2. realize the two-way parallel high-speed random number generating apparatus of a kind of based semiconductor ring laser claimed in claim 1, its additional technical characterictic is: adopt the higher difference technology, and then allow the two-forty sampling and extract the multidigit least significant bit (LSB), realize that two-way high speed random number produces, and can take full advantage of stochastic source and have again the simple characteristics of subsequent treatment.
3. realize the two-way parallel high-speed random number generating apparatus of a kind of based semiconductor ring laser claimed in claim 1, its additional technical characterictic is: by the parameter in reasonable adjusting cross feedback loop, make the degree of correlation of two-way chaotic signal less.
4. realize the two-way parallel high-speed random number generating apparatus of a kind of based semiconductor ring laser claimed in claim 1, its additional technical characterictic is: the higher difference that the two-way chaotic signal is carried out to different rank is processed.
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Cited By (9)
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| CN103716149A (en) * | 2014-01-15 | 2014-04-09 | 东南大学 | High-speed random number generating system based on chaos network |
| CN104461456A (en) * | 2014-12-29 | 2015-03-25 | 太原理工大学 | Tbps all-optical parallel true random number producing method having ultra-strong scalability |
| CN106027224A (en) * | 2016-08-01 | 2016-10-12 | 西南大学 | Secure communication system based on photoelectric feedback ring laser |
| CN106933532A (en) * | 2016-12-14 | 2017-07-07 | 中国电子科技集团公司第三十研究所 | A kind of miniaturization randomizer based on laser phase noise |
| CN107479857A (en) * | 2017-07-14 | 2017-12-15 | 天津大学 | Random number produces and post processing circuitry |
| CN108540216A (en) * | 2018-04-23 | 2018-09-14 | 太原理工大学 | A kind of high-precision chaotic optical time domain reflectometer |
| CN108874366A (en) * | 2018-09-06 | 2018-11-23 | 西南大学 | A kind of high-speed physical randomizer based on chaotic laser light entropy source |
| CN109828421A (en) * | 2019-03-28 | 2019-05-31 | 杭州电子科技大学 | A kind of photon D conversion method and system based on intensity adjustment and differential encoding |
| CN113960567A (en) * | 2021-10-18 | 2022-01-21 | 烟台大学 | Laser radar signal source device based on semiconductor ring laser and ranging method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103716149A (en) * | 2014-01-15 | 2014-04-09 | 东南大学 | High-speed random number generating system based on chaos network |
| CN104461456B (en) * | 2014-12-29 | 2017-10-13 | 太原理工大学 | The parallel true random-number generating method of the full light of Tbps with scalability |
| CN104461456A (en) * | 2014-12-29 | 2015-03-25 | 太原理工大学 | Tbps all-optical parallel true random number producing method having ultra-strong scalability |
| CN106027224A (en) * | 2016-08-01 | 2016-10-12 | 西南大学 | Secure communication system based on photoelectric feedback ring laser |
| CN106933532B (en) * | 2016-12-14 | 2019-09-24 | 中国电子科技集团公司第三十研究所 | A kind of miniaturization randomizer based on laser phase noise |
| CN106933532A (en) * | 2016-12-14 | 2017-07-07 | 中国电子科技集团公司第三十研究所 | A kind of miniaturization randomizer based on laser phase noise |
| CN107479857A (en) * | 2017-07-14 | 2017-12-15 | 天津大学 | Random number produces and post processing circuitry |
| CN108540216A (en) * | 2018-04-23 | 2018-09-14 | 太原理工大学 | A kind of high-precision chaotic optical time domain reflectometer |
| CN108540216B (en) * | 2018-04-23 | 2021-01-08 | 太原理工大学 | High-precision chaotic optical time domain reflectometer |
| CN108874366A (en) * | 2018-09-06 | 2018-11-23 | 西南大学 | A kind of high-speed physical randomizer based on chaotic laser light entropy source |
| CN108874366B (en) * | 2018-09-06 | 2024-01-30 | 西南大学 | High-speed physical random number generator based on chaotic laser entropy source |
| CN109828421A (en) * | 2019-03-28 | 2019-05-31 | 杭州电子科技大学 | A kind of photon D conversion method and system based on intensity adjustment and differential encoding |
| CN109828421B (en) * | 2019-03-28 | 2021-12-10 | 杭州电子科技大学 | Photon analog-to-digital conversion method and system based on intensity adjustment and differential coding technology |
| CN113960567A (en) * | 2021-10-18 | 2022-01-21 | 烟台大学 | Laser radar signal source device based on semiconductor ring laser and ranging method |
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