Two-way chaos security communication system and communication method based on twdm-pon

A TWDM-PON, secure communication technology, applied in the field of broadband chaotic laser communication, can solve problems such as the inability to meet the needs of high-speed secure communication

Active Publication Date: 2020-03-31
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0006] In order to solve the current chaotic secure communication system, dense wavelength division multiplexing (WDM-PON) can improve the bandwidth of users, but limited by the number of WDM wavelength divisions, it still cannot meet the high-speed secure communication needs of a large number of users problem, providing a two-way chaotic secure communication system and communication method based on TWDM-PON

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  • Two-way chaos security communication system and communication method based on twdm-pon
  • Two-way chaos security communication system and communication method based on twdm-pon

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Embodiment Construction

[0026] The present invention will be further described below in conjunction with specific examples.

[0027] A two-way chaotic secure communication system based on TWDM-PON, such as figure 1 As shown, it includes the optical injection part generated by the ultra-broadband chaotic laser, the multi-wavelength chaotic laser generation part without delay characteristics, the forward multi-channel information loading transmission demodulation part, and the reverse multi-channel information loading transmission demodulation part;

[0028] The light injection part generated by the ultra-broadband chaotic laser includes a single-mode band isolator wavelength-tunable semiconductor laser 1, and the output end of the single-mode band isolator wavelength-tunable semiconductor laser 1 is connected to the input end of the first optical amplification device 2 , the output end of the first optical amplification device 2 is connected to the input end of the first optical fiber polarization con...

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Abstract

The invention discloses a bidirectional chaotic secure communication system based on TWDM-PON and a communication method. A beam of continuous laser is injected into an isolator-free multi-longitudinal mode semiconductor laser with external cavity random grating feedback, thereby realizing spectrum broadening of multi-mode chaotic laser without delay feature; the light is divided into multiple paths through a multipath light splitter, three paths form one group, each group is connected with a forward multipath information loading transmission demodulation part and a backward multipath information loading transmission demodulation part; the chaotic laser is separated according to the longitudinal-mode wavelength by using a wave-division multiplexer so as to be used as the chaotic laser carrier of multipath communication; three paths of each group form two closed-loop structures for realizing forward multipath information loading transmission demodulation and backward multipath information loading transmission demodulation. The multiuser directional secure communication can be realized, and the high-speed information can be loaded, the user amount is greatly improved, and the user demand is satisfied.

Description

technical field [0001] The invention relates to the field of broadband chaotic laser communication, in particular to a TWDM-PON-based bidirectional chaotic secure communication system and a communication method, which can be used for chaotic laser wavelength division multiplexing secure communication. Background technique [0002] Chaotic laser has the characteristics of initial value sensitivity, unpredictability, wide spectrum, high energy, etc., which makes it have very important applications in the field of information security. For example, chaotic secure communication, high-speed true random code generation, etc. In the research of chaotic secure communication, people have used chaotic laser broadband and large amplitude characteristics to apply it to chaotic optical secure transmission, and have successfully realized a one-way information rate of 1Gb / s [Nature, Vol. 17, p. 348 , 2005], 2.5 Gb / s[Opt. Express,Vol. 18, p. 5188-5198, 2010] and 10Gb / s[IEEE J. Quantum Elec...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04J14/02H04J14/08H04L9/00H04Q11/00H04B10/85
CPCH04B10/85H04J14/0238H04J14/08H04L9/001H04Q11/0067
Inventor 韩红王大铭高华赵彤王龙生郭园园贾志伟
Owner TAIYUAN UNIV OF TECH
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