| 基于空心光纤多模干涉的折射率传感器研究 |
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| 引用本文： | 李恩邦.基于空心光纤多模干涉的折射率传感器研究[J].光电子．激光,2010(10):1439-1444. |
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| 作者姓名： | 李恩邦 |
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| 作者单位： | 天津工业大学;天津大学精密仪器与光电子工程学院; |
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| 基金项目： | 国家自然科学基金资助项目(60877049); 天津市科委重点资助项目(08JCZDJC19300) |
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| 摘 要： | 基于空心光纤(HF)多模干涉原理提出一种新颖光纤折射率传感器,实现了对环境溶液折射率的测量。这种光纤折射率传感器不仅制作简单、成本低廉,而且为波长编码、抗干扰性好。实验表明,这种光纤折射率传感器其有效传感范围为1.333～1.450,并且当溶液折射率小于1.40时,特征波长与折射率近似呈线性关系,灵敏度为88.07 nm。针对相同折射率不同溶质的溶液,传感器出射光谱能量差异表明,该结构的光纤传感器在物质检测方面有着潜在的应用。
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| 关 键 词： | 多模干涉 空心光纤(HF) 折射率传感 光束传播法(BPM) |
A refractive index sensor based on the multimode interference in a hollow fiber |
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| LI En-bang.A refractive index sensor based on the multimode interference in a hollow fiber[J].Journal of Optoelectronics·laser,2010(10):1439-1444. |
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| Authors: | LI En-bang |
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| Affiliation: | LI En-bang1,ZHENG Dan-ying2,ZHANG Chen-liang2,TANG Chun-xiao1 (1.Tianjin Polytechnic University,Tianjin 300160,China,2.College of Precision Instrument , Optoelectronics Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | A novel optical fiber refractive index sensor is presented,which employs the multimode interference in a hollow fiber to achieve the measurement of environmental solution refractive index.The sensor is wavelength-encoded with good anti-jamming,easy to fabricate and with low cost.Experimental results show that the refractive index sensing range of the sensor is from 1.333 to 1.450,and when the solution refractive index is less than 1.40,the characteristic wavelength is nearly linear to the refractive index w... |
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| Keywords: | multimode interference hollow fiber(HF) refractive index sensing beam propagation method(BPM) |
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