| 基于波长扫描的差分吸收光纤煤矿瓦斯传感系统设计 |
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| 引用本文： | 肖尚辉,唐才杰,江毅,汤俊. 基于波长扫描的差分吸收光纤煤矿瓦斯传感系统设计[J]. 光子学报, 2014, 41(12): 1479-1482. DOI: 10.3788/gzxb20124112.1479 |
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| 作者姓名： | 肖尚辉 唐才杰 江毅 汤俊 |
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| 作者单位： | 1. 电子科技大学 通信抗干扰重点实验室,成都 611731;2. 宜宾学院 物理与电子工程学院,四川 宜宾 644007;3. 北京理工大学 光电学院,北京 100081;4. 川煤集团芙蓉煤矿有限公司,四川 宜宾 644002 |
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| 基金项目： | 四川省科技厅科技支撑项目(No.2011GZ0254)和宜宾市科技局重点科技项目(No.2010GY023)资助 |
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| 摘 要： | 以1 330 nm波段的超辐射发光二极管为光源,利用可调谐光纤法珀滤波器为滤光元件,设计了一套光纤煤矿瓦斯传感系统.该系统采用了参考测量方法和差分吸收技术:一路参考光被引出用以消除光源波动的影响;扫描光纤法珀滤波器获得信号光波长和参考光波长,在实现差分吸收测量的同时,避免了不同滤光元件性能差异和中心波长漂移的影响.实验结果表明,所设计的光纤煤矿瓦斯传感系统的最低可探测甲烷浓度为0.15%.
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| 关 键 词： | 光纤元件 甲烷传感 差分吸收 可调谐光纤法珀滤波器 |
| 收稿时间： | 2012-06-04 |
Design on Optical Fiber Methane Sensing Systems Employing Wavelength-Scanning Based Differential Absorption Techniques |
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| XIAO Shang-hui,TANG Cai-jie,JIANG Yi,TANG Jun. Design on Optical Fiber Methane Sensing Systems Employing Wavelength-Scanning Based Differential Absorption Techniques[J]. Acta Photonica Sinica, 2014, 41(12): 1479-1482. DOI: 10.3788/gzxb20124112.1479 |
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| Authors: | XIAO Shang-hui TANG Cai-jie JIANG Yi TANG Jun |
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| Affiliation: | 1. National Key Lab of Communication, University of Electronic Science and Technology of China, Chengdu 611731, China;2. School of Physics and Electronic Engineering, Yibin University, Yibin, Sichuan 644007, China;3. School of Optoelectronics, Beijing Institute of Technology, Beijing 100081, China;4. Sichuan Coal Group Furong Company, Yibin, Sichuan 644002, China |
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| Abstract: | Utilizing a super-luminescent diode (SLD) in 1 330 nm band and a fiber Fabry-Perot tunable filter (FFP-TF), an optical fiber methane sensing system is experimentally demonstrated. The differential absorption technique and a reference method are employed: a reference channel is introduced to eliminate the fluctuation of light source spectrum, and the two wavelengths are acquired by tuning the FFP-TF. The influence of the light source, loss of leading fiber, and the filters' variations are all avoided. A minimum detectable methane concentration of 0.15% achieved. |
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| Keywords: | Fiber optic sensor Methane sensing Differential absorption Fiber Fabry-Perot tunable filter |
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