一种完全集成的单光子雪崩二极管探测器  

A Fully Integrated Single Photon Avalanche Diode Detector

作　　者：岳恒[1] 徐跃[1] 赵菲菲[1] 陈小青[1] 谢小朋 黄杨[1] 

机构地区：[1]南京邮电大学电子科学与工程学院,南京210003

出　　处：《微电子学》2015年第1期72-75,共4页Microelectronics

基　　金：江苏省自然科学基金面上项目(BK20131379);江苏省高校自然科学基金面上项目(12KJD510010)

摘　　要：针对单光子雪崩二极管探测器,提出了一种紧凑的主动淬灭电路和读出电路,能够快速控制雪崩电流淬灭,对光子雪崩脉冲进行线性和对数方式的模拟计数。该电路能够最大限度地减少淬灭时间,缩短死区时间,扩大读数的动态范围,大幅度减小每个像素单元的面积,提高像素密度。采用SMIC 0.18μm CMOS工艺进行仿真,得到输入雪崩脉冲宽度约为8ns,线性计数达到103次,而对数计数可以达到105次,像素单元占空比得到显著提高。A compact active quenching circuit and a read-out circuit were presented,which could control the avalanche current immediatly and count the photons pulse signal.The circuit was able to minimize the quenching time and shorten the dead time,also expand the dynamic range of the read-out.Each pixel performed a significant decrease in the area,thus improving the pixel density.Based on SMIC 0.18μm CMOS process,the simulation results demonstrated that input pulse width was about 8ns,and linear-count reached 103,while the logarithmiccount could reach 105.Pixel unit duty cycle had been improved significantly.

关 键 词：弱光子探测 主动淬灭 读出电路 阵列 

分 类 号：TN492[电子电信—微电子学与固体电子学]