光纤光栅调制式光纤甲烷气体传感器的研究  

Study on the Optic Fiber CH_4 Sensor By Modulated Fiber Grating

作　　者：王玉田[1] 刘瑾[1] 杨海马[1] 

机构地区：[1]燕山大学电气工程学院,河北秦皇岛市066004

出　　处：《传感技术学报》2003年第3期324-327,共4页Chinese Journal of Sensors and Actuators

基　　金：河北省自然科学基金资助项目 (编号 :6 0 0 2 2 7)

摘　　要：介绍一种检测甲烷气体的全光纤传感方法。基于甲烷气体的近红外吸收光谱 ,采用LED宽带光源 ,通过光纤光栅和压电陶瓷 (PZT)对其进行波长调制 ,获得窄带出射光 ,检测二次谐波 。An optical fiber gas sensor for methane is described. Based on the principles of methane molecules' near-infrared absorption spectra, a LED is used as a light source and its wavelength modulation is realized by a fiber grating and piezoelectric ceramics(PZT) to obtain modulated narrowband output light. The high sensitivity detection of methane can be obtained from the second harmonic signal.

关 键 词：甲烷气体 光纤光栅 近红外吸收光谱 压电陶瓷 传感器 

分 类 号：TP212.14[自动化与计算机技术—检测技术与自动化装置]