Two-way secure communication system with reverse time electro-optic phase chaos
A technology of secure communication and chaotic signals, applied in the field of optical information, can solve problems such as the difficulty of broadband filters
Inactive Publication Date: 2019-03-29
HANGZHOU DIANZI UNIV
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[0002] Due to the influence of the operating speed of electrical components, it is difficult to design a broadband filter, which limits the application of digital chaos in broadband analog communication systems, but it is relatively easy to establish a broadband filter in the light field, so the anti-time chaos theory is proposed
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[0030] The present invention will be further described below in conjunction with the accompanying drawings, so that the solution of the present invention is more clear and understandable.
[0031] Such as figure 1 As mentioned above, this embodiment discloses a two-way secure communication system with anti-time electro-optical phase chaos. The two-way secure communication system includes: a laser 1, a first polarization controller 2-1, a second polarization controller 2-2 and The third polarization controller 2-3, the Mach-Zehnder modulator 3, the first photocoupler 4-1, the second photocoupler 4-2 and the third photocoupler 4-3, the first photodetector 5 -1, the second photodetector 5-2, the third photodetector 5-3, the fourth photodetector 5-4 and the fifth photodetector 5-5, the analog-to-digital converter 6, the bit extractor 7, Shift register 8, first electric amplifier 9-1, second electric amplifier 9-2, third electric amplifier 9-3, fourth electric amplifier 9-4 and fi...
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The invention discloses a two-way secure communication system with reverse time electro-optic phase chaos, comprising: a laser, a reverse time chaotic signal feedback loop, an input end and a receiving end, wherein the laser is respectively connected with the output and input of the anti-time chaotic signal feedback loop, and the laser is respectively connected with a transmitting end and the receiving end; the reverse time chaotic signal feedback loop converts chaotic signals generated by the laser into reverse time chaotic signals, and outputs the reverse time chaotic signal; the transmitting end modulates the reverse time chaotic signals with first information and then transmits the same; the output end modulates the generated reverse time chaotic signals with second information and then transmits the same; and the receiving end is connected with the transmitting end. The two-way secure communication system disclosed by the invention utilizes the reverse time chaotic signal feedbackloop, so that the chaotic signals with reverse times are input to a Mach-Zehnder modulator, meanwhile the chaotic signals are divided into two paths, and then the two paths of signals are respectively modulated and transmitted with two paths of information to effectively hide delay parameters so as to achieve secure two-way communication.
Description
technical field [0001] The invention belongs to the field of optical information technology, and in particular relates to a two-way secure communication system with inverse time electro-optical phase chaos. Background technique [0002] Due to the influence of the operating speed of electrical components, it is difficult to design a broadband filter, which limits the application of digital chaos in broadband analog communication systems, but it is relatively easy to establish a broadband filter in the light field, so the anti-time chaos theory is proposed . In order to generate optical anti-time chaos, random pulses and an appropriate filter can be utilized, so the dynamic complexity of the output signal can be determined by the complexity of the input binary sequence, which may be a more controllable method of generating chaotic signals. [0003] The present invention researches and provides a secure communication system based on the application requirements of the existin...
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IPC IPC(8): H04B10/25H04B10/275H04B10/50H04B10/548H04L27/00H04L29/06
CPCH04B10/2589H04B10/275H04B10/503H04B10/548H04L27/001H04L63/0428
Inventor 李齐良包小彬吴婷胡淼周雪芳曾然唐向宏
Owner HANGZHOU DIANZI UNIV