Chaotic light secret communication system for enhancing secret key space based on photoelectric filtering feedback

A technology of filter feedback and key enhancement, which is applied in the field of chaotic optical security communication system, can solve the problems of eavesdropping and cracking of chaotic security communication, and achieve the effect of enhanced security, small correlation and large adjustable range

Pending Publication Date: 2022-03-25
TAIYUAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the risk of the existing chaotic security communication being eavesdropped and cracked, the present invention provides a chao

Method used

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  • Chaotic light secret communication system for enhancing secret key space based on photoelectric filtering feedback
  • Chaotic light secret communication system for enhancing secret key space based on photoelectric filtering feedback
  • Chaotic light secret communication system for enhancing secret key space based on photoelectric filtering feedback

Examples

Experimental program
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Example Embodiment

[0035] Example one

[0036] Such as figure 1As shown, the embodiment of the present invention provides a chaotic light privacy communication system based on photoelectric filter feedback enhancing key space, including: ultra-radiation light emitting diode 1, first split element 4, first optical isolator 5a, second The optical isolator 5b, the first adjustable failure unit 6a, the second adjustable failure unit 6b, the transmitter, and the transmitter including the first semiconductor laser 7a, the second lighting element 8a, the first mirror 9a, The fourth substrate element 10a, the first photodetector 11a, the first tapered belt pass filter module 12a, and the first gain can be disposed, the receiver including the second semiconductor laser 7b, the third split element 8b, the second The mirror 9b, the fifth split element 10b, the second photodetector 11b, the second adjustable band pass filter module 12b, and the second gain can be modulated.

[0037] The broadband light signal e...

Example Embodiment

[0047] Example 2

[0048] Such as figure 2 As shown, the second embodiment of the present invention provides a system based on photoelectric filter feedback enhancing chaotic light confidential communication key space, and the specific structure is substantially the same as that of the Example. Unlike the embodiment, in the present embodiment, the optical filter 2, an erbium-doped fiber amplifier 3; the ultra-radiation light-emitting diode 1 is transmitted by the wideband optical signal light filter 2, and the erbium-doped fiber amplifier 3 It is divided into two ways to the first light receiving element 4; the first semiconductor laser 7a is injected, and the first semiconductor laser 7a is injected, and the second optical isolator 5b, the second The second semiconductor laser 7b is injected after the adjustable failure unit 6b.

[0049] Specifically, in this embodiment, the second optical isolator 5a and the third optical isolator 5b parameter setting are the same.

[0050] In a...

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Abstract

The invention belongs to the technical field of secret communication, and discloses a chaotic light secret communication system based on a photoelectric filtering feedback enhanced secret key space, which comprises a super radiation light emitting diode, a first light splitting element, a first optical isolator, a second optical isolator, a first adjustable attenuator, a second adjustable attenuator, a receiver and a transmitter, the transmitter comprises a first semiconductor laser, a first photoelectric detector, a first adjustable band-pass filtering module and a first gain adjustable amplifier, and the receiver comprises a second semiconductor laser, a second photoelectric detector, a second adjustable band-pass filtering module and a second gain adjustable amplifier. According to the method, the key space in the chaotic secret communication is effectively increased, the communication security is improved, and the method has relatively good popularization and application values.

Description

technical field [0001] The invention belongs to the technical field of secure communication, in particular to a chaotic optical secure communication system based on photoelectric filter feedback enhanced key space. Background technique [0002] Today, with the substantial growth of communication users and communication data, the security of communication has attracted more and more attention. To this end, it is necessary to effectively encrypt the transmitted information so that the information can be transmitted safely. [0003] Chaotic optical secure communication has the advantages of hardware encryption, compatibility with existing optical communication systems, and long-distance communication, so it is widely used in secure communication. The premise of chaotic optical security communication is to realize the chaotic synchronization between the receiver and the transmitter, which requires that the structural parameters of the receiver and the transmitter are completely...

Claims

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Application Information

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IPC IPC(8): H04L9/00H04B10/85H04B10/50H04B10/60
CPCH04L9/001H04B10/85H04B10/503H04B10/60
Inventor 郭园园王东生王安帮王云才王龙生赵彤
Owner TAIYUAN UNIV OF TECH
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