| 李娟妮,周红,贾振安,冯德全,王启.一种二次镀银光纤光栅气敏传感器[J].光电子激光,2017,28(3):233~237 |
| 一种二次镀银光纤光栅气敏传感器 |
| A double-plating silver FBG gas sensor |
| 投稿时间：2016-06-02 |
| DOI： |
| 中文关键词: 光纤Bragg光栅(FBG) 气敏传感器 二次镀银(Ag) 硫化氢(H2S)气体 |
| 英文关键词:fiber Bragg grating (FBG) gas sensor double-plating silver hydrogen sulfi de (H2S) gas |
| 基金项目:国家自然科学基金(11247229)和陕西省教育厅科研计划项目(16JK1602)资助项目 (西安石油大学 光电油气测井与检测教育部重点实验室,陕西 西安 710065) |
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| 中文摘要: |
| 为了更加有效地实时检测井下硫化氢(H2S)气体,提出一种在光纤Bragg光栅(FBG)上二次 涂镀银(Ag)膜的光纤气敏传感器。一方面,采用二次镀Ag的制备方法增加Ag膜的均匀性,提 高气敏元件的灵敏度；另一方面,采用特殊的油气分离、流线型设计,保证了H2S气体与 气敏元件的有效接触,实 现井下低浓度气体的实时检测。根据实验,当镀Ag的FBG气敏元件置于H2S气体中时,传入 光 纤的倏逝波能量减小,反射光谱的峰值功率下降2.0dBm。 |
| 英文摘要: |
| In order to detect hydrogen sulfide ( H2S) gas more effectively,a double-plating silver fiber Bragg grating (FBG) gas sensor is pro posed.On the one hand,the double-plating silver is adopted to increase the uni formity of the silver film and improve the sensitivity of gas sensor.On the other hand,the sensor which is designed to ach ieve the separation of oil and gas is used to ensure the effective contact between the H2S gas and the gas sensor,an d to complete real-time detection of low concentration gas in underground mine.According to the experiment of double -plating silver FBG gas sensor, the relationship between the H2S gas concentration and absorption spectrum is obtained.Results indicate that the energy of evanescent wave decreases and the peak power of back reflection spectrum drops b y 2.0dBm. |
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