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Long-distance laser chaotic synchronizer based on all fibers

A chaotic synchronization, long-distance technology, applied in secure communication devices, optical fiber transmission, secure communication through chaotic signals, etc., can solve the problems of difficult to get out of the laboratory, short transmission distance, no long-distance communication value, etc., and achieve low cost. , reduce transmission link loss, easy to achieve effect

Pending Publication Date: 2016-11-30
SOUTHWEST UNIVERSITY
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AI Technical Summary

Problems solved by technology

However, most of these solutions are implemented in free space, and the transmission distance is very short (meter level), it is difficult to get out of the laboratory, and it does not have the value of extending to long-distance communication

Method used

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  • Long-distance laser chaotic synchronizer based on all fibers
  • Long-distance laser chaotic synchronizer based on all fibers
  • Long-distance laser chaotic synchronizer based on all fibers

Examples

Experimental program
Comparison scheme
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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the accompanying drawings.

[0021] Such as Figures 1 to 2 As shown, the long-distance laser chaos synchronizing device based on all-fiber in this embodiment includes a fiber optic loop mirror module and an external transmission module, wherein the external transmission module includes a communication connection with the Fiber loop mirror module through the first long-distance optical fiber link The first semiconductor laser of the first semiconductor laser, the second semiconductor laser that is communicatively connected with the Fiber loop mirror module through the second long-distance optical fiber link, and the first polarization controller and the first attenuation between the first semiconductor laser and the Fiber loop mirror module device, a second polarization controller and a second attenuator between the second semiconductor laser and the Fiber ring mirror module, and also include a te...

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Abstract

The invention discloses a long-distance laser chaotic synchronizer based on all fibers. The synchronizer is divided into two major modules, i.e., an external transmission module and a Fiber environment module. Light is injected to a Fiber environment, through adjusting an optical phase in the Fiber environment, laser chaos output is divided into two same portions, one portion is fed back to SL1 via a fiber link LDFL1, and the other portion is injected to SL2 via a fiber link LDFL1. When the fiber link LDFL1 and the fiber link LDFL1 maintain symmetrical and the SL1 and the SL2 have similar internal parameters, in case of proper working conditions, laser chaos can be generated. Besides, by use of the Fiber environment, the SL1 and the SL2 can simultaneously receive injected light and feedback light, and corresponding polarization modes can realize high-quality chaotic synchronization. The chaotic synchronization based on the corresponding SL1 and the SL2 can help to realize bidirectional long-distance laser chaotic secret transmission of information.

Description

technical field [0001] The invention "a long-distance laser chaotic synchronization device based on all optical fibers" belongs to the field of information technology, and specifically relates to a technology for realizing long-distance laser chaotic synchronization based on a fiber optic environment using a Fiber ring mirror. Background technique [0002] The information industry has become an important pillar of the national economy. Information technology supports various fields such as economy, national defense, culture, and scientific research. Information technology brings us high efficiency and convenience. At the same time, there are also threats such as data tampering, system intrusion, and network attacks, mainly computer viruses and hacking techniques. Without information security, public information and state secrets will not be effectively protected. Therefore, exploring and developing advanced information security technology is the premise and important guara...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04B10/25
CPCH04L9/001H04B10/25891
Inventor 吴加贵张悦倪冬原
Owner SOUTHWEST UNIVERSITY
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