Loss of time-delay signature in a ring of three unidirectionally coupled semiconductor lasers  

作　　者：杨磊 潘炜 闫连山 罗斌 穆鹏华 李念强 

机构地区：[1]Center for Information Photonics & Communications,School of Information Science and Technology,Southwest Jiaotong University

出　　处：《Chinese Optics Letters》2015年第4期45-49,共5页中国光学快报（英文版）

基　　金：supported by the National Natural Science Foundation of China(61274042)

摘　　要：A ring of three unidirectionally coupled semiconductor lasers （RTUC-SLs） is used to generate broadband chaos with no pronounced time-delay （TD） signature. Using the autocorrelation function and pernmtation entropy as the TD measures, we demonstrate that under suitable coupling strength, the loss of the TD signature of the lasers in the RTUC-SL configuration is achieved both for the intensity and the phase. These findings should prove valuable for developing high-quality optical chaos for potential applications, such as chaos-based communica- tions and random number generation.A ring of three unidirectionally coupled semiconductor lasers （RTUC-SLs） is used to generate broadband chaos with no pronounced time-delay （TD） signature. Using the autocorrelation function and pernmtation entropy as the TD measures, we demonstrate that under suitable coupling strength, the loss of the TD signature of the lasers in the RTUC-SL configuration is achieved both for the intensity and the phase. These findings should prove valuable for developing high-quality optical chaos for potential applications, such as chaos-based communica- tions and random number generation.

关 键 词：AUTOCORRELATION Random number generation Time delay 

分 类 号：TN248.4[电子电信—物理电子学]