| Optical fiber methane sensor based on SAN film containing cryptophane-E-（OEt）_6 |
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| 引用本文： | 朱广琴,黎学明,陶传义,黄静,杨建春.Optical fiber methane sensor based on SAN film containing cryptophane-E-（OEt）_6[J].Chinese Optics Letters,2012(10):14-16. |
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| 作者姓名： | 朱广琴 黎学明 陶传义 黄静 杨建春 |
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| 作者单位： | College of Chemistry and Chemical Engineering, Chongqing University;Key Laboratory of Optoelectronic Technology and Systems, Ministry of Education, College of Optoelectronic Engineering, Chongqing University |
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| 基金项目： | supported by the National Natural Science Foundation of China (No. 60871039);the Natural Science Foundation Project of Chongqing (No. 2010BB4246);the Science and Technology Development Project of Chongqing (No. CSTC2012gg-yyis 9007);the Sharing Fund of Chongqing University sLarge-Scale Equipment |
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| 摘 要： | A novel long-period fiber grating (LPFG) film methane sensor is designed and applied successfully. The sensor is constructed by depositing a thin styrene-acrylonitrile (SAN) film containing the new compound cryptophane-E-(OEt)6 onto the cladding surface of the LPFG. This film is sensitive to methane gas. Methane causes a change in the refractive index of the sensing film, which can be measured by shifting the resonance wavelength. Experimental results show that the resonant wavelength shifts to the longer wavelength, with increasing methane concentration at a range of 0.0%-3.5% (v/v). A linear relationship is obtained within the test range. Detection limit is estimated at 0.2%, and response time is 60 s. No significant interference is detected from dry air, O2 , CO, CO2 , and H2 . This novel methane sensing material has great application potential due to its advantages.
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| 关 键 词： | 长周期光纤光栅 甲烷传感器 SAN 电影 谐振波长 CO2 LPFG 新化合物 |
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