公开(公告)号：US06919716B1

公开(公告)日：2005-07-19

申请号：US10229665

申请日：2002-08-28

申请人： Kevin Buehler

发明人： Kevin Buehler

IPC分类号： G01R19/00 ,  G01R31/302 ,  G01R31/305 ,  G01R31/308 ,  H03F3/08 ,  H04B10/158

CPC分类号： H03F3/08 ,  H04B10/6911

摘要： Precision measurement of optical signal power is provided. In one implementation, a Wilson current mirror senses current through an avalanche photodiode (APD) that has been exposed to the optical signal. The output of this APD may also be used to recover data. By incorporating a high voltage transistor as the buffer, the Wilson current mirror is able to operate in series with the APD at a high bias level.

摘要翻译： 提供光信号功率的精确测量。 在一个实施方案中，威尔逊电流镜通过暴露于光信号的雪崩光电二极管（APD）感测电流。 该APD的输出也可用于恢复数据。 通过结合高电压晶体管作为缓冲器，威尔逊电流镜能够以高偏置电平与APD串联工作。