色散反馈微腔激光器产生无时延特征宽带混沌  

Generation of wideband chaos without time delay signature using the microlaser with dispersive optical feedback

作　　者：王驿宣 王大铭 贾志伟 王安帮 WANG Yixuan;WANG Daming;JIA Zhiwei;WANG Anbang(Key Laboratory of Advanced Transducers and Intelligent Control System of Ministry of Education and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,Shanxi Province,P.R.China;College of Physics and Optoelectronics,Taiyuan University of Technology,Taiyuan 030024,Shanxi Province,P.R.China)

机构地区：[1]太原理工大学新型传感器与智能控制教育部与山西省重点实验室,山西太原030024 [2]太原理工大学物理与光电工程学院,山西太原030024

出　　处：《深圳大学学报（理工版）》2021年第3期252-257,共6页Journal of Shenzhen University(Science and Engineering)

基　　金：国家自然科学基金资助项目(61822509,61731014,61927811);山西省人才计划资助项目(201805D211027);山西省重点研发计划资助项目(201903D421012);山西省“1331工程”重点创新研究团队计划资助项目;山西省高等学校中青年拔尖创新人才计划资助项目。

摘　　要：提出并数值验证了利用啁啾光纤光栅反馈弧边六角形微腔激光器产生宽带、无时延特征的混沌激光.通过Lang-Kobayashi方程建立啁啾光纤光栅反馈下的弧边六角形微腔激光理论模型,研究弧边六角形微腔激光器偏置电流、反馈强度及啁啾光栅色散系数对混沌激光带宽及反馈时延特征的影响.结果表明,微腔激光器在具有宽带平坦调制响应特性的高偏置电流情况下,通过啁啾光纤光栅色散反馈可以产生无时延特征的宽带混沌,带宽可达14 GHz.We propose and numerically demonstrate a method of generating wideband chaos laser without time delay signature by using a circular-side hexagonal resonator(CSHR)microlaser with optical feedback from a chirped fiber Bragg grating(CFBG).The theoretical model of the circular-side hexagonal resonator microlaser with chirped fiber Bragg grating feedback is established according to the Lang-Kobayashi equations.The effects of bias current,feedback strength and CFBG dispersion on the bandwidth of the chaos laser and the feedback time delay signature are investigated.The results show that the CFBG-feedback CSHR microlaser can generate a wideband chaos without feedback time-delay signature under the condition of high bias current with a wideband and flat small-signal modulation response and the bandwidth can reach 14 GHz.

关 键 词：光学工程 半导体激光器 混沌 微腔激光器 啁啾光纤布拉格光栅 时延特征 

分 类 号：TN248.2[电子电信—物理电子学] O437[机械工程—光学工程]