摘要
通过建立仿真模型研究了VCSEL激光器的输出光功率以及小信号频率响应特性，并提出了VCSEL激光器L—I经验模型参数求解方法和小信号带宽模型的三种改进改进方案，提高了模型的预测精度和对不同环境温度的泛化能力．再次，推导得出了激光器的小信号频率响应的显式表达结果，并从理论和仿真角度分析了参数对小信号带宽和平坦性的影响，提出了拓展小信号带宽和改善平坦性的参数设计方案．最后，提出了一种形式更为简单，计算复杂度更低的小信号带宽二次模型．
In this paper, the characteristics for the output optical power and the small signal frequency response of Vertical Cavity Surface Emitting Laser （VCSEL） are studied based on the proposed mathematical models. We first proposed the methods for solving the parameter of the empirical L-I model. Moreover, three kinds of improvement methods for the better characterizing the relationship of L-I are proposed, with better prediction accuracy and the generalization ability of different ambient temperatures. Thirdly, the explicit expression of the small signal frequency response of the laser is derived. Theoretical analysis and simulations indicate the influence of the parameters on the bandwidth and flatness of the small signal. Then the scheme for parameter design of expanding the small signal bandwidth and improving the flatness are proposed. Finally, a quadratic polynomial model with simpler form and lower computation complexity is proposed.
作者
刘响
张国威
吴浩然
沈斐
LIU Xiang;ZHANG Guo-wei;WU Hao-ran;SHEN Fei(Key Laboratory of Wireless Sensor Network ＆ Communication,Shanghai Institute of Microsystem and Information Technology（SIMIT）,Chinese Academy of Sciences（CAS）,Shanghai 200050,China;University of Chinese Academy of Sciences,Beijing 100049,China;Shanghai Research Center for Wireless Communications,Shanghai 201800,Chin;Information College,Donghua University,Shanghai 201600,Chin)
出处
《数学的实践与认识》
北大核心
2018年第15期107-117,共11页
Mathematics in Practice and Theory
基金
政府间国际科技创新合作重点专项(2016YFE0122900)
5G网络边缘计算技术研发标准化与验证(2017ZX03001015)
无线网络海量数据末端缓存算法及激励机制研究(18ZR1437500)
