光谱吸收型光纤气体传感器的研究  

Study on spectrum absorptive optical fiber gas sensor

作　　者：王立新[1] 张爱军[1] 张宇[1] 罗德新[1] 甘维兵[1] 

机构地区：[1]武汉理工大学光纤传感技术研究中心,湖北武汉430070

出　　处：《传感器技术》2005年第1期12-13,共2页Journal of Transducer Technology

基　　金：湖北省重大攻关项目(2001AA101A02)

摘　　要：研究和讨论了一种易于实现的光谱吸收型光纤气体传感器。采用LED作为光源,利用可调谐法布里-珀罗腔的选频特性进行检波,并采用谐波检测,显著提高了检测的灵敏度。同时,采用多光路设计和软件控制相结合,可在线检测多种气体,克服了以往气体传感器只能检测一种气体的缺点,大大增加了该传感器的适用性。An easy-realizable spectrum absorption type optic fiber gas sensor is studied and discussed.With the frequency-selecting property of tunable Fabry-Perot cavity,using LED as light source,the detection sensitivity has been greatly improved by harmonic measurement.And several kinds of gases concentration can be detected by multi-pass design and software control.It overcomes the shortage of traditional gas sensors that can only detect one kind of gas,which improves its applicability greatly.

关 键 词：光纤气体传感器 可调谐法布里-珀罗腔 光谱吸收 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]