Affiliation:
1. Taiyuan University of Technology
2. Key Lab of Advanced Transducers & Intelligent Control System (Taiyuan University of Technology)
Abstract
Chaos generation from a novel single-loop dispersive optoelectronic oscillator (OEO) with a broadband chirped fiber Bragg grating (CFBG) is numerically and experimentally investigated. The CFBG has much broader bandwidth than the chaotic dynamics such that its dispersion effect rather than filtering effect dominates the reflection. The proposed dispersive OEO exhibits chaotic dynamics when sufficient feedback strength is guaranteed. Suppression of chaotic time-delay signature (TDS) is observed as the feedback strength increases. The TDS can be further suppressed as the amount of grating dispersion increases. Without compromising bandwidth performance, our proposed system extends the parameter space of chaos, enhances the robustness to modulator bias variation, and improves TDS suppression by at least five times comparing to the classical OEO. Experimental results qualitatively agree well with numerical simulations. In addition, the advantage of dispersive OEO is further verified by experimentally demonstrating random bit generation with tunable rate up to 160 Gbps.
Funder
National Key Research and Development Program of China
National Natural Science Foundation of China
Natural Science Foundation of Sichuan Province
Science Fund for Distinguished Young Scholars of Sichuan Province
Sichuan Science and Technology Program
111 Project
Subject
Atomic and Molecular Physics, and Optics
Cited by
4 articles.
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