光纤环路光腔循环衰荡多组分气体浓度在线测量系统的研究  

Research on the Multi-Type Gas Concentration in-situ Measurement System Based on Fiber-Circled Cavity Ring-down Method

作　　者：李文超[1] 田秀仙[2] 吴飞[2] 沙晓鹏[2] 苏凤燕[2] 康莉莉[2] 李志全[2] 

机构地区：[1]秦皇岛职业技术学院,河北秦皇岛066100 [2]燕山大学电气工程学院,河北秦皇岛066004

出　　处：《传感技术学报》2008年第8期1466-1471,共6页Chinese Journal of Sensors and Actuators

基　　金：国家自然科学基金资助项目(60377002)

摘　　要：根据Beer-Lambert定律,设计和构造了一种新型的光纤环路光腔循环衰荡多组分气体浓度在线测量系统,并对设计过程中各参数之间的关系进行了具体的分析与研究,得出了七种特定峰值波长的光分别在对应浓度为100cm3/m3的七种气体中的衰荡时间,比较了不同浓度同种气体对光的吸收特性,研究了光的衰荡时间、环路损耗与气体对光的吸收系数和气体浓度的关系,为实现高精度的气体浓度在线测量提供了重要的依据。According to the law of Beer-Lambert, the new multi-type gas concentration in-situ measurement system based on fiber-circled cavity ring-down method was designed and constructed. And the precise analysis to the parameters of the system was done during the designing progress. Then, the ring-down times of seven certain light in seven corresponding gases （with the same concentration of 100 cm^3/m^3） were obtained, and the gas absorption characteristics in different concentrations were given. Also, the ring-down time-gas absorption coefficient-gas concentration relation and the loop loss-gas absorption coefficient-gas concentration relation were analyzed, all of which provided important reference for the high accuracy gas concentration in-situ measurement

关 键 词：光纤环路 衰荡时间 在线测量 吸收系数 气体浓度 

分 类 号：O433.4[机械工程—光学工程]