CN203480497U - Two-way parallel high-speed random number generation device based on semiconductor ring laser - Google Patents
Two-way parallel high-speed random number generation device based on semiconductor ring laser Download PDFInfo
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- CN203480497U CN203480497U CN201320564599.2U CN201320564599U CN203480497U CN 203480497 U CN203480497 U CN 203480497U CN 201320564599 U CN201320564599 U CN 201320564599U CN 203480497 U CN203480497 U CN 203480497U
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Abstract
The utility model discloses a two-way parallel high-speed random number generation device based on a semiconductor ring laser. According to the device, two cross feedback loops are led into the semiconductor ring laser, and feedback time relay and feedback strength are adjusted reasonably so that the semiconductor ring laser can output two ways of high-dimensional chaotic signals and send the high-dimensional chaotic signals into two photoelectric detectors. The two ways of high-dimensional chaotic signals are sampled by means of a high-speed oscilloscope, and then are converted into floating-point number chaotic signals with 52-bit (or higher) resolution ratios. High-order difference processing is carried out on the two ways of chaotic signals respectively, and multiple least significant bits are extracted, and finally two-way parallel high-speed random numbers are obtained. The two-way parallel high-speed random number generation device is simple in structure, easy to control and capable of generating a random number sequence of a Tb/s magnitude without follow-up complex processing.
Description
Technical field
The utility model 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 is Pseudo-random number generator based on determinacy complicated algorithm; Another kind is the physical random number maker based on certain chance phenomenon.The former speed is fast, but security is low; The latter is safe, but speed can only reach Mb/s magnitude.
Appeared in the newspapers and shown that laser chaos signal can be used as physical entropy source and can generate high-speed physical random number.Physical random number maker based on this type of laser chaos has feature 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, semiconductor ring laser utensil has that volume is little, cost is low, integrated level advantages of higher.Therefore,, by suitable feedback condition, semiconductor ring laser device can produce the laser chaos signal of two-way " approximate independent ", and then generates 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 high-speed physical random number disclosed.Specifically, two-way chaotic signal, by sampling, quantizes, coding, and extract 4 least significant bit (LSB)s generation random numbers, finally two-way random number is obtained to the high-quality physical random number in a road by step-by-step xor operation.But this scheme subsequent treatment is complicated on the one hand; 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 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 physical accidental source data with asymmetric probability distribution to be converted to the floating number of 52 bit resolutions, 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 Mb/s magnitude.And the method fails laser chaos physical entropy source promote and verify.
Utility model content
In view of the deficiency of the prior art of above statement, the utility model aims to provide a kind of device and method that generates the parallel high speed random number of two-way based on novel semi-conductor ring laser.
The two-way parallel high-speed random number generating apparatus of a kind of based semiconductor ring laser that the utility model provides comprises semiconductor ring laser device, semiconductor optical amplifier, optical circulator, photo-coupler, fibre delay line, photodetector, high-speed figure oscillograph.Wherein high-speed figure oscillograph can substitute with analog to digital converter.
The utility model is realized 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 higher difference technology, and then allow two-forty sampling and extract multidigit least significant bit (LSB), realize two-way high speed random number and produce, can make full use of stochastic source and there is again the simple feature 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 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 two-way chaotic signal and send into oscillographic two passages of high-speed figure; The two-way chaotic signal obtaining from oscillograph is converted into the floating number of 52 bit resolution and carries out respectively 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 the utility model proposes and formerly technology comparison, have the following advantages:
1. utilize a semiconductor ring laser device and existing conventional communication system device, low cost, is easy to realize.
2. subsequent treatment is simple, only comprises that higher difference computing and least significant bit (LSB) extract.
3. pair systematic parameter has height robustness, allows two-forty sampling.
4. can produce the parallel high speed random number of two-way.
Accompanying drawing explanation
Fig. 1 is the system chart of two-way high speed random number device of the present utility model.
Fig. 2 is the two-dimensional diagram of a road random number sequence wherein.
Fig. 3 is the statistic bias (left side) and serial correlation coefficient (right side) of a wherein road 10Gb random number sequence.
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 utility model, this device can be realized the generation of two-way parallel high-speed random number, and its synthesis rate can reach Tb/s magnitude.
In Fig. 1, a semiconductor ring laser device is realized two-way chaotic signal by two cross feedback loops and is exported, and clockwise direction mould feeds back to counterclockwise mould, and counterclockwise mould feeds back to clockwise direction mould simultaneously; Every backfeed loop has comprised fibre delay line, circulator, has had a semiconductor optical amplifier, and wherein semiconductor optical amplifier is used for regulating feedback intensity.By suitable fibre delay line and rationally regulate feedback intensity, two-way chaotic signal degree of correlation is very little, can regard the physical entropy source of " approximate independent " as.First, two-way chaotic signal is sent into respectively the photodetector of two high speeds, then the two-way chaos electric signal that 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 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; 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 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 occurring is that 0.4991,0 probability occurring is 0.5009.Utilize the random number that the method for the utility model introduction produces can cross 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
-0.5, σ
c=N
-0.5, N=10Gb is random number sequence length.
Above stated be only a kind of embodiment of the utility model device; should be understood that; do not departing under the prerequisite of the utility model device essence; in implementing, reality can make some changes (such as only realizing the single channel chaos entropy source of single channel cross feedback; utilize 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 domain of the present utility model.
Claims (4)
1. the two-way parallel high-speed random number generating apparatus of a based semiconductor ring laser, by semiconductor ring laser device, semiconductor optical amplifier, optical circulator, photo-coupler, fibre delay line, photodetector and high-speed figure oscillograph form, wherein high-speed figure oscillograph can substitute with analog to digital converter, it is characterized in that for introducing two cross feedback loops by fibre delay line and semiconductor optical amplifier, regulate fibre delay line and the semiconductor optical amplifier in each loop, make 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 two-way chaotic signal and send into oscillographic two passages of high-speed figure, the two-way chaotic signal obtaining from oscillograph is converted into the floating number chaotic signal of 52 bit resolution and carries out respectively 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 higher difference technology, and then allow two-forty sampling and extract multidigit least significant bit (LSB), realize two-way high speed random number and produce, can make full use of stochastic source and there is again the simple feature of subsequent treatment.
3. the two-way parallel high-speed random number generating apparatus of realizing 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. the two-way parallel high-speed random number generating apparatus of realizing a kind of based semiconductor ring laser claimed in claim 1, its additional technical characterictic is: the higher difference that two-way chaotic signal is carried out to different rank is processed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320564599.2U CN203480497U (en) | 2013-09-12 | 2013-09-12 | Two-way parallel high-speed random number generation device based on semiconductor ring laser |
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| CN201320564599.2U CN203480497U (en) | 2013-09-12 | 2013-09-12 | Two-way parallel high-speed random number generation device based on semiconductor ring laser |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103455306A (en) * | 2013-09-12 | 2013-12-18 | 西南交通大学 | Double-line parallel high-speed random number generating device based on semiconductor ring laser |
| 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 |
| CN114995788A (en) * | 2022-08-04 | 2022-09-02 | 威海天航信息技术有限公司 | Physical random number generator, physical random number generating method and processor |
-
2013
- 2013-09-12 CN CN201320564599.2U patent/CN203480497U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103455306A (en) * | 2013-09-12 | 2013-12-18 | 西南交通大学 | Double-line parallel high-speed random number generating device based on semiconductor ring laser |
| 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 |
| CN114995788A (en) * | 2022-08-04 | 2022-09-02 | 威海天航信息技术有限公司 | Physical random number generator, physical random number generating method and processor |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140312 Termination date: 20140912 |
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