对于矢网中噪声选件计量过程所急需的噪声标准值计算方法展开了研究。报告了无源器件噪声标准值的含义和现有计算方法的特点,并通过现有的两种方法和不同温度条件的实验数据,对比分析了噪声标准值与环境温度、无源器件S参数的关系。基...对于矢网中噪声选件计量过程所急需的噪声标准值计算方法展开了研究。报告了无源器件噪声标准值的含义和现有计算方法的特点,并通过现有的两种方法和不同温度条件的实验数据,对比分析了噪声标准值与环境温度、无源器件S参数的关系。基于无源器件噪声模型,提出一种包含温度参数的新型矢量计算方法。在290 K环境温度下,该方法与商业化软件计算结果的最大偏差在10^(-4)~10^(-5)量级,在297 K环境温度下,噪声系数标准值计算准确度提高了0.08 d B左右,同时实验证明了环境温度对于最佳源反射系数的幅值和相位几乎没有影响。展开更多
The future of optical communication is all optical communication,while basic ingredient of all optical communication are optical passive devices.In this paper,we review present status of optical passive device which i...The future of optical communication is all optical communication,while basic ingredient of all optical communication are optical passive devices.In this paper,we review present status of optical passive device which include connector,coupler,optical switch,attenuater,WDM devices,isolator etc.We especially focus on optical switch which is the core of the new generation of optical switch system.We also comment on the future development of optical passive devices.展开更多
文摘对于矢网中噪声选件计量过程所急需的噪声标准值计算方法展开了研究。报告了无源器件噪声标准值的含义和现有计算方法的特点,并通过现有的两种方法和不同温度条件的实验数据,对比分析了噪声标准值与环境温度、无源器件S参数的关系。基于无源器件噪声模型,提出一种包含温度参数的新型矢量计算方法。在290 K环境温度下,该方法与商业化软件计算结果的最大偏差在10^(-4)~10^(-5)量级,在297 K环境温度下,噪声系数标准值计算准确度提高了0.08 d B左右,同时实验证明了环境温度对于最佳源反射系数的幅值和相位几乎没有影响。
文摘The future of optical communication is all optical communication,while basic ingredient of all optical communication are optical passive devices.In this paper,we review present status of optical passive device which include connector,coupler,optical switch,attenuater,WDM devices,isolator etc.We especially focus on optical switch which is the core of the new generation of optical switch system.We also comment on the future development of optical passive devices.
