基于ADN8831实现红外单光子探测器的精密温度控制  

Precise temperature control of single-photon detector at infrared communication wavelengths realized by application of ADN8831

作　　者：李水峰[1] 熊予莹[1] 廖常俊[2] 

机构地区：[1]华南师范大学物理与电信工程学院,广东广州510006 [2]华南师范大学信息光电子科技学院,广东广州510006

出　　处：《量子电子学报》2007年第6期704-708,共5页Chinese Journal of Quantum Electronics

基　　金：国家973技术资助项目(G2001039302);广东省科技专项(2003A103405);广州市科技攻关资助项目(2001-Z-095-01)

摘　　要：分析了在红外通信波段对量子密钥分配的关键器件单光子探测器进行精密温度控制的必要性.为了达到最好的探测效率和最小的暗计数,存在一个最佳工作温度;而且探测器噪声对温度相当敏感.介绍了基于ADN8831控制器控制半导体热电制冷器来实现红外单光子探测器的精密温度控制的方法.给出了ADN8831芯片的特点和应用电路.实验表明该电路控制精度可达±0.01℃。利用此精密温控电路来改变InGaAs/InP雪崩光电二极管的工作温度,得到几组不同温度下光电流、暗电流-电压特性曲线.Analysis indicates the importance of precise temperature control of single-photon detector used for quantum key distribution in infrared communication wavelengths. There exists an optimal operation temperature to satisfy the highest detection efficiency with the lowest dark counts and the dark counts are sensitive to the temperature. Precise temperature control based on ADN8831 is achieved for single-photon detector. The characteristics and applied circuit of the chip ADN8831 are presented in detail. The precision of the controlled temperature is 0.01℃. Photocurrent-Voltage and Dark-current-Voltage characteristics measured at different temperatures are presented.

关 键 词：量子光学 精密温控 ADN8831 半导体热电制冷器 雪崩光电二极管 暗计数 

分 类 号：O431.2[机械工程—光学工程]