| 差分吸收式光纤气体传感器的研究 |
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| 引用本文： | 张爱军,冉昌艳,张宇. 差分吸收式光纤气体传感器的研究[J]. 传感器与微系统, 2005, 24(10): 8-9,12 |
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| 作者姓名： | 张爱军 冉昌艳 张宇 |
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| 作者单位： | 武汉理工大学,光纤传感技术与信息处理教育部重点实验室,湖北,武汉,430070 |
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| 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。采用分布反馈式半导体激光器作为光源,通过光源调制实现气体体积分数的谐波检测,显著提高了检测的灵敏度。同时,采用差分结构,消除了激光器光强波动等共模噪声的影响。
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| 关 键 词： | 光纤气体传感器 谐波检测 差分光吸收 |
| 文章编号： | 1000-9787（2005）10-0008-02 |
| 收稿时间： | 2005-04-25 |
| 修稿时间： | 2005-04-25 |
Study on difference absorptive optical fiber gas sensor |
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| ZHANG Ai-jun,RAN Chang-yan,ZHANG Yu. Study on difference absorptive optical fiber gas sensor[J]. Transducer and Microsystem Technology, 2005, 24(10): 8-9,12 |
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| Authors: | ZHANG Ai-jun RAN Chang-yan ZHANG Yu |
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| Abstract: | An easy-realizable gas sensing system using absorption type optical fiber is studied and discussed.Using DFB LD as light source,the detection sensitivity has been greatly improved by light source modulation harmonic measurement.By using difference construction,it can overcome the influence of common mode interfering signals caused by the wave of LD's light intension. |
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| Keywords: | optical fiber gas sensor harmonic measurement difference optic absorption |
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