Chaotic laser communication system with high secrecy space

A chaotic laser and communication system technology, which is applied in the direction of secure communication, optical transmission system, and transmission system through chaotic signals, to achieve the effect of increasing bit error rate and improving confidentiality

Active Publication Date: 2018-11-06
NANJING UNIVERSTIY SUZHOU HIGH TECH INST +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] With the development of modern communication technology, deciphering and decryption technology has also developed. In recent years, it has become possible to steal info

Method used

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  • Chaotic laser communication system with high secrecy space
  • Chaotic laser communication system with high secrecy space
  • Chaotic laser communication system with high secrecy space

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Embodiment Construction

[0027] Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:

[0028] Those skilled in the art can understand that, unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. It should also be understood that terms such as those defined in commonly used dictionaries should be understood to have a meaning consistent with the meaning in the context of the prior art, and will not be interpreted in an idealized or overly formal sense unless defined as herein Explanation.

[0029] A high-secret space chaotic laser communication structure based on temperature-controlled electro-optic modulator operating point, such as figure 1 shown. Including transmitter, receiver and temperature control system. The transmitting end includes a first laser 1, a second laser 2, a f...

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Abstract

The invention discloses a chaotic laser communication system with a high secrecy space, comprising a transmitting end, a receiving end and a temperature control system. The transmitting end and the receiving end adopt an opto-feedback type structure; encryption on the hardware is used for realizing chaotic synchronization and information demodulation. The temperature control system realizes the synchronous and real-time control of the temperature of a Mach-Zehnder electro-optic modulator at the transmitting end and the receiving end through the terminal and the control modules of the transmitting end and the receiving end. Since the temperature of the modulator changes dynamically during communication, the difficulty for an eavesdropping party to crack information is increased as mismatchof the temperature of the modulator causes mismatch of a modulator operating point, which further makes the error rate increase even in the case that other parameters of the chaotic system are cracked. The chaotic laser communication system with high secrecy space in the invention can improve the secrecy performance of the existing chaotic system and has important significance for national defensesecurity and information security.

Description

technical field [0001] The invention belongs to the technical field of secure communication, in particular to a space chaotic laser communication system with high security. Background technique [0002] With the development of modern communication technology, deciphering and decryption technology has also developed. In recent years, it has become possible to steal information from traditional optical fiber communication systems and recover and extract them. The security of traditional optical fiber communication systems has been challenged. . In this case, higher requirements are put forward for the confidentiality of the communication system. Especially in the field of national defense, the research on secure communication is even more important. [0003] As a kind of secure communication, chaos communication is an encryption technology based on the physical layer, which uses transceivers with the same structure and parameters to generate the same chaotic carrier wave to ...

Claims

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Application Information

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IPC IPC(8): H04B10/50H04B10/85H04L9/00
CPCH04B10/505H04B10/85H04L9/001
Inventor 李密张欣宇陈向飞王苏宋跃江
Owner NANJING UNIVERSTIY SUZHOU HIGH TECH INST
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