Double balanced differential configuration for high speed InGaAs/InP single photon detector at telec

来源 :OptoelectronicsLetters | 被引量 : 0次 | 上传用户:hrbqian
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
In this paper, we present an innovative method of double balanced differential configuration, in which two adjacent single photon avalanche diodes (SPADs) from the same wafer are configured as the first balanced structure, and the output signal from the first balanced stage is subtracted by the attenuated gate driving signal as the second balanced stage. The compact device is cooled down to 236 K to be characterized. At a gate repetition rate of 400 MHz and a 1 550 nm laser repetition rate of 10 MHz, the maximum photon detection efficiency of 13.5% can be achieved. The dark count rate is about 10-4ns-1at photon detection efficiency of 10%. The afterpulsing probability decreases with time exponentially. It is shown that this configuration is effective to discriminate the ultra-weak avalanche signal in high speed gating rates.
其他文献
Using transmitting volume Bragg gratings (TVBG) as a basis, an experiment on one-dimensional spatial filtering of a deformed laser beam is designed. The deformed laser beam results from a He-Ne laser beam modulated by an amplitude modulation plate with a
本文论述了双轴晶体中和频、差频、参量振荡、参量放大等各种三波相互作用过程时相位匹配曲线及有效非线性系数的数值计算方法.从而只要知道某种双轴晶体对相应波长的主折射率及非线性系数后,便可求得最佳相位匹配角θ(OPM)和φ(OPM).本文报导了对六种双轴晶体的计算结果和对二种双轴晶体的实验情况.实验结果与计算结果十分一致.
期刊
报道了一种能够增强液芯光纤中的受激拉曼散射的外部荧光种子植入法。在毛细管套液芯光纤之间充入荧光染料,实现染料介质与拉曼介质的分离,从外部植入染料荧光种子线性地放大液芯光纤中的受激拉曼散射的初始光强,有效无污染地增强了液芯光纤中拉曼介质的受激拉曼散射强度。实验结果表明,外部荧光染料浓度为最佳值约为10-6 mol/L时,可使液芯光纤中拉曼介质的各阶斯托克斯线均有最大增强。
研究了HoP5O14晶体生长,测定了它的结构,分析了它的晶面与几何外形。研究了吸收、激发、荧光及红外光谱。首次测出了HoP5O14晶体中Ho3 的5I7—5I8跃迁在2.046微米。
期刊
期刊
本文报导和讨论了激光FM锁模中LN调制器电光与声光效应之间的共振耦合现象。
期刊
A large-mode-area neodymium-doped silicate photonic bandgap fiber was theoretically designed and experimentally demonstrated. The relative index step between the high-index rods and the background glass was ~0.5%, which is the lowest cladding index differ
介绍一种数学形态学中的击中与否(Hit-or-Miss)算法,能快速准确实现光学多目标识别的新方案.避免了普通光学相关目标识别方法中经常出现的错误信号.因此,其目标识别结果更为有效可靠.
Optically transparent Er3 -doped tellurite-based nanocrystallized glasses with the composition of 70TeO2-15Li2O-15Nb2O5-0.5Er2O3 (mol) have been prepared by a conventional melting quenching and the subsequent heat treatment processes. The sizes of grown n
本文描述一种适于泵浦直径为45毫米的激活介质的同轴氙灯结构,列出了用这种灯于输出能量为1000~1500焦耳的钕玻璃激光器上的实验结杲。
期刊