CN100568726C - A kind of based on the real random code generator of chaotic laser light and the method for generation random code thereof - Google Patents
A kind of based on the real random code generator of chaotic laser light and the method for generation random code thereof Download PDFInfo
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- CN100568726C CN100568726C CNB2007100621401A CN200710062140A CN100568726C CN 100568726 C CN100568726 C CN 100568726C CN B2007100621401 A CNB2007100621401 A CN B2007100621401A CN 200710062140 A CN200710062140 A CN 200710062140A CN 100568726 C CN100568726 C CN 100568726C
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Abstract
A kind of based on chaotic laser light the real random code generator and the method that produces random code belong to communication technical field, be specifically related to a kind of based on chaotic laser light the real random code generator and produce the method for random code, this generator comprises between chaotic laser light transmitter 1, photodetector 2, comparator 3 and data processor 4 and they and linking to each other successively; Its chaotic laser light transmitter 1 can by laser 1a, collimating lens 2a, beam splitter 3a, optical attenuator 4a and speculum 5a form and they between link to each other successively.Utilize said apparatus to produce the method for real random code: to utilize light feedback or light beam to go into mode and realize chaotic laser light output, the chaotic laser light of output converts the signal of telecommunication to through photodetector 2, chaotic signal by 3 pairs of outputs of comparator quantizes, and realizes the output of binary system real random code sequence by data processor 4 at last.This real random code generator utilizes chaotic laser light as stochastic source, and the true random signal of generation has very high speed and randomness.
Description
Technical field
The present invention is a kind of to belong to communication technical field based on the real random code generator of chaotic laser light and the method for generation random code thereof, is specifically related to a kind of based on the real random code generator of chaotic laser light and the method for generation random code thereof.
Background technology
Random code and random signal are used very extensive, especially in the communications field.
Random code can be divided into pseudo noise code and real random code.Pseudo noise code is generally produced by mathematical method, is to utilize complicated algorithm or algorithm combination to add that seed source produces pseudo noise code.Generally speaking,,,, can dope the distribution situation of pseudo noise code as long as know the rule of algorithm always there is certain rules though algorithm is complicated, can not be at last truly random code.
The generation of real random code is based on the randomness conversion of some physical quantity.The randomness of this random code depends on the stochastic behaviour of physical quantity, and with the real random code that the method produces, randomness is good more than pseudo noise code.The common physical process that is used for producing random code has: thermal noise, quantum chance event, nuclear decay process, electric chaos etc.
Reported random code generator has following a few class:
1. utilize noise as random signal source.Adopt analog circuit to produce white noise (CN85102755A) or utilize high-frequency triode produce broadband random-noise voltage (CN1327304A) or by two points on the voltage plane extract the difference noise (CN1278965A, US6247033B1) or utilize the Z diode as thermal noise source (WO03098428).
2. the oscillation source based on a random frequency hopping produces random signal (CN1165436A).
3. utilize single probe quantum true random code device to produce random code (CN1707309A).
4. utilize random sequence generator to produce random sequence, by XOR-generations random code (CN1343389A and US006593788B1) or utilize random sequence controlling resistance (electric capacity) and the switching network of electronic analog swtich composition with generation random signal (CN1062225A).
The random signal of utilizing circuit to produce, its bandwidth is little and randomness is poor; And the quantum stochastic source is because the data acquisition difficulty, and the influence of factors such as equipment complexity is difficult to realize practicability.
Summary of the invention
The present invention is a kind of to be to propose a kind of real random code generator based on chaotic laser light based on the real random code generator of chaotic laser light and the method purpose of generation random code thereof, this generator adopts chaotic laser light as stochastic source, in order to improve the randomness of output random signal.
A kind of real random code generator based on chaotic laser light of the present invention comprises between chaotic laser light transmitter 1, photodetector 2, comparator 3 and data processor 4 and they and linking to each other successively.
Described real random code generator based on chaotic laser light, this generator comprise between chaotic laser light transmitter 1, photodetector 2, comparator 3 and data processor 4 and they and linking to each other successively; Its chaotic laser light transmitter is by laser 1a, collimating lens 2a, beam splitter 3a, optical attenuator 4a and the first speculum 5a form or by injection laser 1b, fiber coupler 2b, optical attenuator 3b, Polarization Controller 4b and be injected into that laser 5b forms or by laser 1c, fiber coupler 2c, optical attenuator 3c, the Polarization Controller 4c and the second speculum 5c form, all be to connect successively between the device of three kinds of compositions of its chaotic laser light transmitter 1, its photodetector 2 adopts infrared photoelectric detector, comparator 3 adopts simple gate limit comparator, the S-C trigger that data processor 4 adopts the forward position to trigger.
Above-mentioned real random code generator produces the method for random code, it is characterized in that: at first utilize light feedback or light beam to go into mode and realize chaotic laser light output, then the chaotic laser light of output converts the signal of telecommunication to through photodetector, quantize by the chaotic signal of comparator again output, output TTL signal is realized the output of binary system real random code sequence by data processor at last.
The above-mentioned real random code generator that utilizes produces the method for random code, it is characterized in that described smooth feedback system is to utilize the first speculum 5a that output center wavelength is returned the laser 1a realization chaotic laser light output of this output center wavelength for 780nm for the Laser feedback of the laser 1a output of 780nm, or utilize the second speculum 5c that output center wavelength is returned the laser 1c realization chaotic laser light output of this output center wavelength for 1550nm for the Laser feedback of the laser 1c output of 1550nm; It is to utilize the laser of injection laser 1b output to be injected into to be injected among the laser 5b that described light beam is gone into mode, realizes chaotic laser light output.
The present invention is based on the real random code generator of chaotic laser light and the method and the reported random code generator of generation random code following advantage relatively arranged:
1. the chaotic laser light of selecting the generation of chaotic laser light transmitter for use is as stochastic source, and the random signal of output has high randomness and stability.
2. the bandwidth of chaotic laser light and being easy to generate.
3. can adopt commercial semiconductor laser as light source, cost is lower.
Description of drawings
Fig. 1, the structural representation based on chaotic laser light real random code generator of the present invention;
1: chaotic laser light transmitter, 2: photodetector, 3: comparator, 4: data processor
A concrete structure schematic diagram of Fig. 2, the real random code generator based on chaotic laser light of the present invention;
1: chaotic laser light transmitter, 2: photodetector, 3: comparator, 4: data processor, 1a: laser, 2a: collimating lens, 3a: beam splitter, 4a: optical attenuator, 5a: speculum
Another concrete structure schematic diagram of Fig. 3, the real random code generator based on chaotic laser light of the present invention;
1: chaotic laser light transmitter, 2: photodetector, 3: comparator, 4: data processor, 1b: injection laser, 2b: fiber coupler, 3b: optical attenuator, 4b: Polarization Controller, 5b: be injected into laser
Another structural representation of Fig. 4, the real random code generator based on chaotic laser light of the present invention;
1: chaotic laser light transmitter, 2: photodetector, 3: comparator, 4: data processor, 1c: laser, 2c: fiber coupler, 3c: optical attenuator, 4c: Polarization Controller, 5c: speculum
Embodiment
For illustrate better of the present invention based on chaotic laser light the real random code generator and produce the method for random code, the method that the present invention is based on the real random code generator of chaotic laser light and produce random code below in conjunction with accompanying drawing 2, accompanying drawing 3 and 4 pairs in accompanying drawing is further described.
Execution mode one:
Fig. 2 utilizes the light feedback system to realize a kind of structural representation of the real random code generator of chaotic laser light output.Embodiment is as follows:
Real random code generator based on chaotic laser light, comprise between chaotic laser light transmitter 1, photodetector 2, comparator 3 and data processor 4 and they and linking to each other successively, wherein chaotic laser light transmitter 1 comprises laser 1a, collimating lens 2a, beam splitter 3a, optical attenuator 4a and speculum 5a, and connects successively between them; Described random code generator, its photodetector 2 adopts Infrared Detectors, and comparator 3 adopts simple gate limit comparator, the S-C trigger that data processor 4 adopts the forward position to trigger.
Execution mode two:
Fig. 3 utilizes light beam to go into the another kind of structural representation that mode realizes the real random code generator of chaotic laser light output.Embodiment is as follows:
Real random code generator based on chaotic laser light, comprise between chaotic laser light transmitter 1, photodetector 2, comparator 3 and data processor 4 and they linking to each other successively, wherein chaotic laser light transmitter 1 comprise injection laser 1b, fiber coupler 2b, optical attenuator 3b, Polarization Controller 4b and be injected into laser 5b and they between connect successively; Described random code generator, its photodetector 2 adopts Infrared Detectors, and comparator 3 adopts simple gate limit comparator, the S-C trigger that data processor 4 adopts the forward position to trigger.
Execution mode three:
Fig. 4 utilizes the light feedback system to realize one structural representation of kind again of the real random code generator of chaotic laser light output, and embodiment is as follows:
Based on the real random code generator of chaotic laser light, its chaotic laser light transmitter 1 comprises between laser 1c, fiber coupler 2c, optical attenuator 3c, Polarization Controller 4c and speculum 5c and laser 1c, fiber coupler 2c, optical attenuator 3c, Polarization Controller 4c, the speculum 5c and connecting successively; Described real random code generator based on chaotic laser light, its photodetector 2 adopts Infrared Detectors, and comparator 3 adopts simple gate limit comparator, the S-C trigger that data processor 4 adopts the forward position to trigger.
Laser 1c selects commercial semiconductor laser (LDM5S752) for use, and output center wavelength is a 1550nm laser, and output light passes through fiber coupler 2c, optical attenuator 3c and Polarization Controller 4c successively after by speculum 5c reflected back laser 1c.Laser 1c exports chaotic laser light, and by the output of fiber coupler 2c one end, its last handling process is with embodiment two.
Claims (3)
1, a kind of real random code generator based on chaotic laser light, it is characterized in that it being that a kind of employing chaotic laser light is as stochastic source, utilize light feedback system or light beam to go into mode and realize chaotic laser light output, the chaotic laser light of output is to convert the signal of telecommunication to through photodetector, quantize by the chaotic signal of comparator output, it is continuous successively to realize that by data processor the generator of binary system real random code sequence output, this generator comprise between chaotic laser light transmitter (1), photodetector (2), comparator (3) and data processor (4) and they; Its chaotic laser light transmitter (1) is by laser (1a), collimating lens (2a), beam splitter (3a), optical attenuator (4a) and first speculum (5a) are formed or by injection laser (1b), fiber coupler (2b), optical attenuator (3b), Polarization Controller (4b) and be injected into that laser (5b) is formed or by laser (1c), fiber coupler (2c), optical attenuator (3c), Polarization Controller (4c) and second speculum (5c) are formed, all be to connect successively between the device of three kinds of compositions of its chaotic laser light transmitter (1), its photodetector (2) adopts Infrared Detectors, comparator (3) adopts simple gate limit comparator, the S-C trigger that data processor (4) adopts the forward position to trigger.
2, utilize the described real random code generator of claim 1 to produce the method for random code, it is characterized in that: at first utilize light feedback or light beam to go into mode and realize chaotic laser light output, then the chaotic laser light of output converts the signal of telecommunication to through photodetector, quantize by the chaotic signal of comparator again output, output TTL signal is realized the output of binary system real random code sequence by data processor at last.
3, the method for utilizing the described real random code generator of claim 1 to produce random code according to claim 2, it is characterized in that described smooth feedback system is that to utilize first speculum (5a) be that the Laser feedback of laser (1a) output of 780nm is returned the laser that this output center wavelength is 780nm (1a) and realized chaotic laser light output to output center wavelength, or to utilize second speculum (5c) be that the Laser feedback of laser (1c) output of 1550nm is returned the laser that this output center wavelength is 1550nm (1c) and realized chaotic laser light output to output center wavelength; It is to utilize the laser of injection laser (1b) output to be injected into to be injected in the laser (5b) that described light beam is gone into mode, realizes chaotic laser light output.
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Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101662278B (en) * | 2009-09-18 | 2011-08-03 | 江苏经贸职业技术学院 | Three-order switchable constant Lyapunov exponent spectra chaotic circuit and using method thereof |
| CN102280815B (en) * | 2011-07-16 | 2012-08-08 | 太原理工大学 | Optical feedback chaos laser |
| CN103368653B (en) * | 2013-07-22 | 2016-02-17 | 太原理工大学 | A kind of production method of Chaotic Wideband Signal of similar white noise and device |
| CN103427801B (en) * | 2013-08-30 | 2016-01-13 | 太原理工大学 | A kind of method and device producing real random code based on backward Rayleigh scattering |
| CN105262585B (en) * | 2015-09-22 | 2018-03-30 | 太原理工大学 | The key distribution system and method for a kind of safety high speed |
| CN105226492A (en) * | 2015-10-10 | 2016-01-06 | 杭州虹视科技有限公司 | Laser light source and laser display system |
| CN106301754B (en) * | 2016-08-01 | 2019-04-02 | 太原理工大学 | A kind of truly random password generating device based on vertical cavity surface emitting laser |
| CN108563422B (en) * | 2018-04-17 | 2020-10-09 | 图灵人工智能研究院（南京）有限公司 | Random number generator and random number generating method |
| CN109194463B (en) * | 2018-11-02 | 2022-02-01 | 杭州电子科技大学 | Anti-time photoelectric chaotic bidirectional secret communication system |
| CN110795065B (en) * | 2019-10-31 | 2020-05-22 | 太原理工大学 | TOAD-based all-optical random number generation device |
| CN111124362B (en) * | 2019-12-06 | 2022-03-15 | 太原理工大学 | High-speed physical random number generator based on monolithic integrated chaotic laser |
| CN114024662B (en) * | 2021-12-21 | 2022-05-24 | 渔翁信息技术股份有限公司 | Random number generator |
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| 光量子随机数发生器. 吴双，梁林梅，李承祖，Surasak，Chiangga.量子光学学报，第11卷第2期. 2005 |
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