| 基于单模光纤偏芯结构的光纤折射率传感器研究 |
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| 引用本文： | 程华奇,荆振国,彭伟,郝华丽,李虹,张信普.基于单模光纤偏芯结构的光纤折射率传感器研究[J].科技创新导报,2012(4):649-653. |
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| 作者姓名： | 程华奇 荆振国 彭伟 郝华丽 李虹 张信普 |
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| 作者单位： | 大连理工大学物理与光电工程学院,大连理工大学物理与光电工程学院,大连理工大学物理与光电工程学院,大连理工大学物理与光电工程学院,大连理工大学物理与光电工程学院,大连理工大学物理与光电工程学院 |
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| 基金项目： | 国家自然科学基金(60907035,60977055);国家教育部(NCET-09-0255);辽宁省自然科学基金(20092157)资助项目 |
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| 摘 要： | 基于迈克尔逊(Michelson)干涉仪(MI)原理,结合光纤传感器的特性,设计和实现了一种单模光纤(SMF)偏芯干涉仪结构光纤折射率传感器,并针对蔗糖溶液进行了折射率的测量。实验结果表明:这种传感器的传感范围在1.33～1.39时,特征波长与外界折射率有单调的递减变化关系,蔗糖折射率每变化0.01时,特征波长平均变化约为0.12nm。这种传感器结构简单,灵敏度较高,能够实现液体折射率与浓度变化的在线检测。
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| 关 键 词： | 迈克尔逊(Michelson)干涉仪(MI) 折射率 单模光纤(SMF) 偏芯 |
Investigation of fiber optic refractive index sensor based on single-mode fiber core-offset attenuartor |
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| CHENG Hua-qi,JING Zhen-guo,PENG Wei,HAO Hua-li,LI Hong and ZHANG Xin-pu.Investigation of fiber optic refractive index sensor based on single-mode fiber core-offset attenuartor[J].Science and Technology Consulting Herald,2012(4):649-653. |
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| Authors: | CHENG Hua-qi JING Zhen-guo PENG Wei HAO Hua-li LI Hong and ZHANG Xin-pu |
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| Institution: | School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China,School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China,School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China,School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China,School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China and School of Physics and Optoelectronic Technology,Dalian University of Technology,Dalian 116024,China |
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| Abstract: | Based on the principle of Michelson interferometer and the characteristics of fiber optic sensors,this paper has developed a novel single-mode core-offset fiber optic interferometer sensor,and uses it for the refractive index measurement in sugar solution.Experimental results show that when the sensing range is from 1.33 to 1.39,there will be a better progressive decrease relationship between the characteristic wavelength and the refractive index;the refractive index change of 0.01 of the sucrose will lead to an approximate average variation of 0.12 nm in the characteristic wavelength.This sensor can be used for on-line liquid refractive index and concentration monitoring with simple structure and high sensitivity. |
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| Keywords: | Michelson interferometer(MI) refractive index single-mode fiber(SMF) core-offset |
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