| 光纤浓度传感器的实验研究 |
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| 引用本文： | 向清,黄德修.光纤浓度传感器的实验研究[J].光子学报,1994,23(5):437-442. |
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| 作者姓名： | 向清 黄德修 |
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| 作者单位： | 华中理工大学光电子工程系 |
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| 摘 要： | 本文报道了采用光谱吸收法测量气体吸度的光纤传感器系统。在该系统中,可调谐的激光二极管作光源,几何长度0.8832m的怀特池作为吸收池。对CH4气体的测量灵敏度达3.7×10-9,还介绍了达到这一探测灵敏度的信号调制与探测技术,理论上对该系统的最小可探测压强作了估算。
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| 关 键 词： | 光纤浓度传感器 调制与探测技术 灵敏度 最小可探测压强 |
| 收稿时间： | 1993-08-14 |
THE EXPERIMENTAL RESEARCH OF OPTICAL FIBER CONCENTRATION SENSOR |
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| XiangQing,Huang Dexiu.THE EXPERIMENTAL RESEARCH OF OPTICAL FIBER CONCENTRATION SENSOR[J].Acta Photonica Sinica,1994,23(5):437-442. |
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| Authors: | XiangQing Huang Dexiu |
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| Institution: | The Department of Optronic Engineering, Huazhong University of Science and Technology, Wuhan 430074 |
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| Abstract: | The optical fiber sensor system for measuring gas concentraction using theabsorption spectrum is described in which a tunable diode laser source and the white、cell with the geometrical length of 0.883m are used, its sensitivity is better than 3.7×10-9 for CH4,the modulation and detection techniques employed to achieve this sensitivityare described.The minimum detectable pressure of this system is estimated theoretically. |
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| Keywords: | ptical fiber concentraction sensor Modulation and detection technique Sensifivity Minimum detectable pressure |
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