半导体激光器速率方程的参数提取(特邀)  

Extraction of Semiconductor Laser Rate Equations Parameters(Invited)

作　　者：王建坤 黄永光[1,2,3] 刘祎慧 WANG Jiankun;HUANG Yongguang;LIU Yihui(Key Laboratory of Semiconductor Materials Science,Institute of Semiconductors,Chinese Academy of Sciences,Beijing 100083,China;Center of Materials Science and Optoelectronics Engineering,University of Chinese Academy of Sciences,Beijing 100049,China;Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices,Beijing 100083,China)

机构地区：[1]中国科学院半导体研究所材料重点实验室,北京100083 [2]中国科学院大学材料与光电研究中心,北京100049 [3]低维半导体材料与器件北京市重点实验室,北京100083

出　　处：《光子学报》2022年第2期72-79,共8页Acta Photonica Sinica

基　　金：国家自然科学基金(No.61574137)。

摘　　要：重新评估了常见半导体激光器参数提取方法中近似条件的适用性,提出更加通用的方程进行半导体激光器速率方程的参数提取。以分布式反馈激光器芯片为例,利用小信号频率响应曲线(S21)准确提取了半导体激光器谐振频率fr与阻尼因子γ,结合激光器的光功率-电流(P-I)响应曲线,即可计算出半导体激光器速率方程的各个参数。对比之前的参数提取近似计算方法,本方法适用的激光器驱动电流范围更宽,大电流下谐振频率fr等参数的提取更精确,对宽工作电流工作的激光器如模拟激光器等的优化改进有借鉴意义。Semiconductor laser is one of the core light sources of optical fiber communication systems.Better semiconductor laser performance helps to increase the capacity and quality of the entire fiber optic communication system.In order to design better semiconductor lasers,it is often necessary to simulate various performances through rate equations.However,some parameters need to be obtained through experimental results,so it is necessary to fabricate semiconductor laser chip to extract the parameters.Through multiple rounds of iterative experiments and theoretical calculation,chip optimization is continuously carried out to achieve the final goal.In the process of optimization analysis,in order to better analyze the performance of laser chips,laser parameters are usually divided into eigen parameters and parasitic parameters.Parasitic parameters mainly include capacitance,resistance and other properties.They can be obtained by means of a fitting method by combining a reflection curve of the small-signal frequency response(S11)with an equivalent circuit model.These parameters are basically not affected by the lasercurrent change.However,the extraction of the eigenmetric parameters is related to the selected lasercurrent range,and the parameter extraction results themselves have a variety of possible answers.How to obtain more accurate and suitable for a wide operating current range of eigen parameters is the focus of this paper.In recent years,with the development of emerging applications such as 5G optical communication and Radio On Fiber(ROF)analog communication,semiconductor lasers are required to operate at larger drive currents to improve high-speed performance and are required to have better linearity.In such ROF analog communication systems,semiconductor lasers need to work at a lager bias laser-current and in the linear region to obtain excellent microwave performance.Besides,it is need to test and evaluate many microwave performance indicators,such as third-order intermodulation,second harmonic,relative inten

关 键 词：光纤通信 分布反馈激光器 半导体激光器 速率方程 参数提取 谐振频率 

分 类 号：TN248[电子电信—物理电子学]