深圳大学学报（理工版）2025，Vol.42Issue(3)：363-370,8.DOI:10.3724/SP.J.1249.2025.03363
基于多横模VCSEL的时延隐藏混沌信号产生
Time-delay signature concealment of chaos generated by multi-transverse mode vertical-cavity surface-emitting laser
摘要
Abstract
To enhance the security of chaotic secure communication,the temporal and spectral characteristics of multi-transverse-mode vertical-cavity surface-emitting lasers(VCSELs)under different feedback strengths are investigated through both simulations and experiments.The system's output is observed to evolve from free-running operation to single-period,multi-period,and ultimately to a chaotic state.At the same time,it is found that the spatial intensity distribution and optical path associated with the multi-transverse mode affect the time-delay signature of the chaotic output.A chaotic signal with concealed time-delay features is successfully generated.Under planar mirror optical feedback,a VCSEL laser emitting three transverse modes produces a chaotic signal with a bandwidth of 2.68 GHz and an output power of 1 mW,while effectively concealing the time-delay characteristics.Such time-delay-concealed chaotic signal can be employed as a carrier to significantly enhance the security of chaos-based communication systems.关键词
光学/垂直腔面发射激光器/多横模/混沌激光/时延特征/自相关/模场分布Key words
optics/vertical-cavity surface-emitting laser/multi-transverse mode/chaotic laser/time-delay signature/autocorrelation/mode field distribution分类
电子信息工程引用本文复制引用
郝明明,高俊腱,陶春燕,刘泽邦,马雨心,李璞,王云才..基于多横模VCSEL的时延隐藏混沌信号产生[J].深圳大学学报（理工版）,2025,42(3):363-370,8.基金项目
National Key Research and Development Program of China(2024YFB2808400) （2024YFB2808400）
National Natural Science Foundation of China(61927811,62175177,62322504) （61927811,62175177,62322504）
Guangdong Introducing Innovative and Entrepreneurial Teams of"The Pearl River Talent Recruitment Program"(2019ZT08X340) 国家重点研发计划资助项目(2024YFB2808400) （2019ZT08X340）
国家自然科学基金资助项目(61927811,62175177,62322504) （61927811,62175177,62322504）
"珠江人才计划"引进创新创业团队资助项目(2019ZT08X340) （2019ZT08X340）
