Method for generating chaotic light on basis of feedback interference principle

A technology of chaotic light and feedback light, applied in the coupling of optics, optical components, optical waveguides, etc., to eliminate security threats and improve anti-interference ability

Active Publication Date: 2019-12-31
TAIYUAN UNIV OF TECH
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Problems solved by technology

[0006] The present invention provides a method for generating chaotic light based on the principle of feedback interference in order to solve the technical problems caused by the generation of chaotic light signals by means of traditional perturbation

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  • Method for generating chaotic light on basis of feedback interference principle

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Embodiment Construction

[0013] Such as figure 1 As shown, the present invention proposes a method for generating chaotic light based on the principle of feedback interference. The device includes: a semiconductor laser, a circulator, a 3dB coupler, a semiconductor optical amplifier (SOA), an optical delay line, and a 1×3 coupler. The specific connection method is as follows: through the first semiconductor laser 1, the first detection optical signal λ / Inject into the input end of the first 3dB coupler 2; the first 3dB coupler 2 is divided into two outputs, respectively connected to the first semiconductor optical amplifier 3, the first circulator 5, the second semiconductor optical amplifier 4, and the second circulator 6 Its output is all connected to the input end of the second 3dB coupler 7, and the output end of the second 3dB coupler 7 is connected to the input end of the third circulator 11; By the second semiconductor laser 2, the second detection optical signal λ / / Inject the third semico...

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Abstract

The invention relates to the field of chaotic signals, in particular to a method for generating chaotic light on the basis of a feedback interference principle. The method for generating chaotic lighton the basis of the feedback interference principle is different from the traditional methods for generating chaotic light through disturbance manners such as light injection, light feedback, photoelectric feedback and the like by utilizing semiconductor optical devices, is a novel method for generating chaotic light, and is capable of effectively eliminating the security threat, for the chaoticlight systems, of the traditional disturbance manners and then greatly improving the disturbance rejection ability of the chaotic systems. The chaotic light is used as a phase chaotic signal and provides possibility and basis for realizing high-speed acquisition and quantification processes in the later period. Moreover, the method is capable of generating wide-frequency spectrum and high-entropyvalue chaotic light signals through debugging and optimization, and has significance in the fields of high-speed true random secret keys, chaotic light optical time domain reflectometers, chaotic ultra-wideband pulse signal generation and coherent length-tunable light sources.

Description

technical field [0001] The invention relates to the field of chaotic signals, in particular to a method for generating chaotic light based on the principle of feedback interference. Background technique [0002] In recent years, due to the characteristics of noise-like and wide spectrum, chaotic optical signals have shown broad application prospects in the fields of high-speed true random keys, chaotic optical time domain reflectometers, chaotic ultra-wideband pulse signal generation, and tunable coherence length light sources. , and has received extensive attention from researchers. [0003] The traditional method of generating chaotic light is obtained by perturbation methods such as optical feedback, optical injection or photoelectric feedback, and using semiconductor lasers (distributed feedback laser DFB, vertical cavity surface emitting laser VECSEL), etc. [0004] However, whether it is a distributed feedback laser or a vertical cavity surface emitting laser, the qua...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G02B27/10G02B6/26
CPCG02B6/26G02B27/1006
Inventor 王云才张国栋张建国李璞王安帮李才
Owner TAIYUAN UNIV OF TECH
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