基于背向拉曼散射的分布式光纤温度传感器APD最佳雪崩增益的分析  

Research on the Optimum Gain of APD in Distributed Fiber Temperature Sensors

作　　者：赵洪志[1] 李乃吉[2] 赵达尊[2] 

机构地区：[1]清华大学精仪系,北京100084 [2]北京理工大学,北京100081

出　　处：《传感技术学报》1997年第3期27-31,共5页Chinese Journal of Sensors and Actuators

摘　　要：本文分析了基于背向拉曼散射的分布式光纤温度传感器中光电接收用雪崩光电二极管雪崩增益对接收电路信噪比的影响,给出了使传感系统接收电路输出信号信噪比最大这一最佳意义下APD雪崩增益的表达式并进行了分析,实验结果和理论分析基本一致。We present an analysis of the anti-Stokes in Raman backscatter for fiber temperature sensors to quantify the effect of varying the gain of the avalanche photodiode. An optimal gain was found based on maximizing the SNR of the received circuit output. Good agreement between calculated and measured avalanche gain of APD is obtained.

关 键 词：光纤传感器 雪崩光电二极管 信噪比 

分 类 号：TN253[电子电信—物理电子学] TP212[自动化与计算机技术—检测技术与自动化装置]