空间辐射下卫星光通信系统半导体激光器的可靠性估计  

Reliability Evaluation of Space Irradiated Laser Diode in Laser Satellite Communication System

作　　者：刘韵[1] 赵尚弘[1] 杨生胜[2] 李勇军[1] 强若馨 

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077 [2]兰州空间技术物理研究所真空低温技术与物理实验室,甘肃兰州730000

出　　处：《激光与光电子学进展》2014年第5期117-121,共5页Laser & Optoelectronics Progress

摘　　要：基于空间辐射和器件辐射效应的特点,选取正态分布对辐射的剂量率和单位辐射剂量造成的性能退化量进行描述,得到了卫星光通信系统中半导体激光器的可靠度函数。进而以高轨空间辐射条件为背景,对器件的性能退化量进行了模拟,在模拟数据的基础上利用最大似然估计法计算性能退化量的分布函数,得到了器件的可靠度曲线以及平均寿命。最后分析了减少测试时间,以较少的样本数量进行估计的可行性。Laser diode is the preferred laser source for satellite laser communication system, and it is significant to analyze its reliability in space radiation environment. According to the character of space radiation and devices＇ radiation dose, normal distribution is used to describe both space radiation dose rate and performance degradation per unit radiation dose, and the reliability function of laser diode is achieved. The performance degradation in high- orbit radiation environment is simulated. On the basis of the simulated data, devices＇ distribution function is evaluated by maximum likelihood estimate, and then the reliability curve and average life are obtained. The feasibility of using less experimental time and less sample number to evaluate distribution function is analyzed.

关 键 词：激光器 半导体激光器 空间辐射环境 性能退化 可靠性 正态分布 

分 类 号：TN214[电子电信—物理电子学]