| 基于光纤布拉格光栅的化学传感器 |
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| 引用本文： | 桑新柱,余重秀,颜玢玢,吕乃光,张琦.基于光纤布拉格光栅的化学传感器[J].光学精密工程,2006,14(5):771-774. |
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| 作者姓名： | 桑新柱 余重秀 颜玢玢 吕乃光 张琦 |
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| 作者单位： | 北京邮电大学,电子工程学院,光通信与光波技术教育部重点实验室,北京,100876;马哈那空科技大学,通信工程系,曼谷,10530,泰国;北京机械工业学院,电子信息工程系,北京,100085 |
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| 基金项目： | 北京市教委科技发展计划项目
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北京市重点实验室基金
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电子工程学院校科研和教改项目 |
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| 摘 要： | 除掉光纤布拉格光栅的包层,可以使它的布拉格波长对外界环境的折射率变化敏感。采用氢氟酸腐蚀掉光纤布拉格光栅的包层,获得了直径约为6 μm的布拉格光栅。实验研究了布拉格波长对化学溶液的浓度敏感性特征,结果表明:采用10 pm分辨率的光谱仪,丙二醇溶液在低浓度时的浓度分辨率为0.7%,在高浓度时的分辨率为0.32%;糖溶液在低浓度时的分辨率为0.55%,高浓度时为0.1%。采用商用的分辨率为1 pm的高精度波长解调系统,它们的分辨率可以提高一个数量级。
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| 关 键 词： | 光纤布拉格光栅 化学传感器 生物传感器 折射率 |
| 文章编号： | 1004-924X(2006)05-0771-04 |
| 收稿时间： | 2006-03-21 |
| 修稿时间： | 2006-07-18 |
Chemical sensor based on a fiber Bragg grating |
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| SANG Xin-zhu,YU Chong-xiu,YAN Bin-bin,T. Mayteevarunyoo,L Nai-guang,ZHANG Qi.Chemical sensor based on a fiber Bragg grating[J].Optics and Precision Engineering,2006,14(5):771-774. |
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| Authors: | SANG Xin-zhu YU Chong-xiu YAN Bin-bin T Mayteevarunyoo L Nai-guang ZHANG Qi |
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| Affiliation: | 1. Key Laboratory of Optical Communication and Lightwave Technologies of Ministry of Education, School of Electronic Engineering , Beijing University of Posts and Telecommunications, Beijing 100876, China 2. Department of Telecommunication Engineering, Mahanakorn University of Technology, Bangkok 10530, Thailand 3. Department of Electronic Information Engineering, Beijing Institute of Machinery, Beijing 100085, China |
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| Abstract: | Bragg wavelength sensitivity to the refractive index of the ambient media can be realized by etching out the cladding of fiber Bragg grating.A fiber Bragg grating with the diameter of 6 μm is abtained through hydrofluoric(HF) acid etching.Bragg wavelength sensitivity to chemical solutions is experimentally investigated.With an optical spectrum analyzer to detect the wavelength shift,the concentration resolutions of propylene glycol solutions are 0.7% and 0.32% at low and high concentrations,respectively.For sugar solutions,concentration resolutions are 0.55% and 0.1% respectively.In addition,the concentration resolutions can be improved an order of magnitude with wavelength interrogation module of 1 pm resolution. |
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| Keywords: | fiber Bragg grating chemical sensor biosensor refractive index |
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