APD探测器模块性能及噪声检测  

Detection of performances and noise of APD detector module

作　　者：李永亮 余健辉[1] 张军[1] LI Yongliang;YU Jianhui;ZHANG Jun(Key Laboratory of Visible Light Communication of Guangzhou,College of Science and Engineering,Jinan University,Guangzhou 510632,China)

机构地区：[1]暨南大学理工学院广州市可见光通信重点实验室

出　　处：《应用光学》2019年第6期1115-1119,共5页Journal of Applied Optics

基　　金：国家十二五重大工程项目（20150613）;国家自然科学基金面上项目（61675092）;航空科学基金（201708W4001）;广东省科技计划项目（2016B010111003）;广东省自然科学基金面上项目（2016A030313079）;广东省攻关项目子项目（32415118003）;广东省公益科技计划项目（2017A010102006）;广州市产业领军人才聚集工程项目（CXLJTD-201607）;广州市科技计划项目（201707010396）;暨南大学科研培育与创新基金（11618413)

摘　　要：为了实现可见光通信系统的探测器模块微小型化,设计并制作了一款50 cm^3的温控APD探测器模块,并对模块的稳定性、温控效果和噪声特性进行了检测。结果表明,APD探测器模块的光电流测量平均相对偏差为0.795%;APD探测器的雪崩增益和响应度随着温度的降低而提高;APD探测器电阻的变化影响负载电阻分压,使得过剩噪声因子的测量值远大于真实值,且会随着入射光功率的增大而增大。可以得出结论:提高反向偏置电压与降低温控温度相配合,更有利于弱光信号检测;检测电路中的负载电阻影响APD探测器噪声特性。In order to realize the miniaturization of the detector module of visible light communication system, a 50 cm^3 temperature-controlled avalanche photodiode(APD) detector module was designed and fabricated, and the stability, temperature control effect and noise characteristics of the module were tested. The results show that the average relative deviation of photocurrent measurement of APD detector module is 0.795%;the avalanche gain and responsivity of APD detector increase with the decrease of temperature;the change of the resistance of the APD detector affects the load resistor divider so that the measured value of the excess noise factor is much larger than the true value and increases as the incident light power increases. It can be concluded that increasing the reverse bias voltage in combination with lowering the temperature control temperature is more conducive to weak light signal detection;the load resistance in the detection circuit affects the noise characteristics of the APD detector.

关 键 词：APD探测器模块 雪崩增益 响应度 过剩噪声因子 

分 类 号：TN312.7[电子电信—物理电子学]