光学纤维通讯技术上的进展,对硅雪崩光敏二极管的兴趣日益增长。这些器件所显示的噪声的内部倍增增益要比用PIN光电二极管电子放大系统得到的来得低。巳研制出几种杂质密度断面分布均匀或分布极为全面的不同类型的雪崩二极管。Webb、Mclntyre和Conradi表明,后者显示出很低的噪声增盖和高响应速率,然而它 Advances in optical fiber communication technology have shown an increasing interest in silicon avalanche photodiodes. The internal multiplication gain of the noise exhibited by these devices is lower than that obtained with a PIN photodiode electronic amplification system. Several different types of avalanche diodes have been developed that have uniform or highly distributed impurity density profiles. Webb, Mclntyre and Conradi show that the latter shows a very low noise floor and a high response rate, however it