Method and device for suppressing chaotic delay by using broadband spontaneous emission quantum noise

A technology of spontaneous radiation and quantum noise, which is applied to devices for controlling laser output parameters, safety communication devices, secure communication through chaotic signals, etc., to achieve the effects of delay characteristic suppression, frequency bandwidth controllable, and sidelobe value reduction

Active Publication Date: 2019-12-13
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0004] The present invention overcomes the deficiencies in the prior art, provides a method and device for suppressing chaotic time delay by using broadband spontaneous radiation quantum noise, and solves the problem of time delay characteristics in the existing chaotic signal generation system

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  • Method and device for suppressing chaotic delay by using broadband spontaneous emission quantum noise
  • Method and device for suppressing chaotic delay by using broadband spontaneous emission quantum noise
  • Method and device for suppressing chaotic delay by using broadband spontaneous emission quantum noise

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[0027] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention clearer, the present invention will be further described in detail in combination with the embodiments and accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. The technical solutions of the present invention will be described in detail below in conjunction with the embodiments and drawings, but the scope of protection is not limited thereto.

[0028] Such as figure 1 As shown, it is a device that uses broadband spontaneous emission quantum noise to suppress chaotic time delay, including a broadband spontaneous emission quantum noise system and a continuous chaotic laser signal generation system. The broadband spontaneous emission quantum noise system includes a broadband spontaneous emission light source 1, an optical isolator ...

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Abstract

The invention relates to chaotic laser, in particular to a method and a device for suppressing chaotic delay by using broadband spontaneous emission quantum noise, which solves the problem that the existing chaotic signal generation system has delay characteristics. The device for suppressing chaotic delay by using broadband spontaneous emission quantum noise comprises a broadband spontaneous emission quantum noise system and a continuous chaotic laser signal generation system to construct a broadband spontaneous emission quantum noise preparation system. Chaos is modulated by generating continuous chaotic laser signals and broadband spontaneous emission quantum noise. The broadband spontaneous emission quantum noise adopted by the invention can provide uncertain initial values for chaoticsignals, so that the final chaotic signals cannot be predicted and become chaotic signals with uncertainty, chaotic laser delay characteristics can thus be effectively suppressed, and the method andthe device can be used in the field of secure communication.

Description

technical field [0001] The invention relates to chaotic laser, in particular to a method and device for suppressing chaotic time delay by using broadband spontaneous radiation quantum noise, which can be used for secure communication. Background technique [0002] Chaotic laser has the characteristics of high bandwidth, large amplitude, noise-like, and sensitivity to initial value conditions, and is widely used in chaotic secure communication, chaotic lidar, optical time domain reflectometer, optical coherence tomography, fast random number generator and other fields . While semiconductor lasers bring convenience to the application of chaotic lasers, they also have unfavorable factors—time delay characteristics. The so-called delay characteristic means that the chaotic laser output by the semiconductor laser will carry information related to the length of the feedback cavity, showing weak periodicity in the time domain. The existence of this delay characteristic seriously ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01S5/00H01S5/06H04L9/00
CPCH01S5/0085H01S5/06H04L9/001
Inventor 郭龑强房鑫赵彤郭晓敏
Owner TAIYUAN UNIV OF TECH
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