Chaotic oscillator in frequency domain with fiber Fabry⁃Perot interferometer  

光纤法珀干涉仪的频域混沌振荡器

作　　者：WANG Huiying LI Chuandi LV Guohui 王慧莹;李传娣;吕国辉(黑龙江工商学院信息与机电工程学院,哈尔滨150025;黑龙江大学电子工程学院,哈尔滨150080)

机构地区：[1]Information and Mechanical and Electrical Engineering College,Heilongjiang College of Business and Technology,Harbin 150025,China [2]School of Electronic Engineering,Heilongjiang University,Harbin 150080,China

出　　处：《黑龙江大学工程学报(中英俄文)》2024年第4期40-46,共7页Journal of Engineering of Heilongjiang University

基　　金：黑龙江省自然科学基金项目(A200604);国家自然科学基金项目(60077007)

摘　　要：Chaos is a type of motion unique to nonlinear dynamical systems,characterized by extreme sensitivity to initial conditions and the randomness,which makes it potentially useful for secure communication.Chaos research require a easily controllable chaotic oscillator.Chaotic behavior in optical bistability provides a simple theoretical model.Based on the theoretical model,a novel chaotic oscillator in frequency domain is proposed.The chaotic oscillator is composed of a tunable fiber laser,fiber Fabry⁃Perot interferometer(FFPI)and hybrid delayed feedback loop.The laser itself plays a part in delay time which is induced by PZT device.The chaotic oscillator is realized by experiments and chaos behaviors are observed.The chaos oscillator has the characteristic of simplicity and flexibility.It have potential application value in the field of fiber optical communication encryption.混沌是非线性动力系统特有的一种运动类型,具有对初始条件的极端敏感性和随机性,使其在保密通信方面具有潜在的应用前景。混沌研究需要一种易于控制的混沌振荡器。光学双稳中的混沌行为提供了一个简单的理论模型。在此理论模型的基础上,提出了一种新型的频域混沌振荡器。该混沌振荡器由可调谐光纤激光器、光纤法珀干涉仪和延迟反馈回路组成。延迟反馈回路的延迟作用主要由作为激光器部件的PZT器件引起。实验证实了该混沌振荡器的可行性,并观察到了其混沌行为。该混沌系统具有结构简单、灵活的特点,在光纤通信加密领域有潜在的应用价值。

关 键 词：tunable fiber laser fiber Fabry⁃Perot interferometer delayed feedback chaotic oscillator in frequency domain 

分 类 号：TP212[自动化与计算机技术—检测技术与自动化装置]