Experimental study on liquid refractive index sensing based on fiber-colloidal crystal

Q4 Physics and Astronomy 光学技术 Pub Date : 2014-01-01 DOI:10.3788/GXJS20144002.0163

闫海涛 Yan Haitao, 张智 Zhang Zhi, 赵晓艳 Zhao Xiaoyan, 甄志强 Zhen Zhiqiang, 李立本 Li Liben

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Abstract

The colloidal crystals are prepared,and the changes of colloidal crystals photonic band-gap are used to study the refractive index sensing by experiment.The changes in the center wavelength of the colloidal crystals photonic band-gap are analyzed,the relationship between band-gap and refractive index is discussed in theory.The mould is designed to obtain colloidal crystals-fiber structure,colloidal crystals are observed by scan microscope and the band-gap position is measured.The results show that the measured results agree with the theoretical analysis well.The experimental device is designed to test liquid refractive index,the couple of the fibers are used to measure the band-gap of colloidal crystals and the results are also analyzed in theory.The results show that the position of a center wavelength of the silica photonic band-gap is at 1445.5nm,and the band-gap of colloidal crystals can be used to measure the liquid refractive index in different liquid.The new sensing mechanism is formed and it provides a new application of colloidal crystals in the liquid sensing.

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基于纤维-胶体晶体的液体折射率传感实验研究

制备了胶体晶体，并利用胶体晶体光子带隙的变化对折射率传感进行了实验研究。分析了胶体晶体光子带隙中心波长的变化，从理论上讨论了带隙与折射率的关系。设计结晶器获得胶体晶体-纤维结构，用扫描显微镜观察胶体晶体并测量带隙位置。结果表明，实测结果与理论分析吻合较好。设计了测试液体折射率的实验装置，利用光纤耦合器测量了胶体晶体的带隙，并对实验结果进行了理论分析。结果表明，二氧化硅光子带隙的中心波长位置为1445.5nm，胶体晶体的带隙可用于测量不同液体中的液体折射率。形成了一种新的传感机理，为胶体晶体在液体传感中的应用提供了新的途径。

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来源期刊

光学技术 Physics and Astronomy-Atomic and Molecular Physics, and Optics

CiteScore

0.60

自引率

0.00%

发文量

6699

期刊介绍： The predecessor of Optical Technology was Optical Technology, which was founded in 1975. At that time, the Fifth Ministry of Machine Building entrusted the School of Optoelectronics of Beijing Institute of Technology to publish the journal, and it was officially approved by the State Administration of Press, Publication, Radio, Film and Television for external distribution. From 1975 to 1979, the magazine was named Optical Technology, a quarterly with 4 issues per year; from 1980 to the present, the magazine is named Optical Technology, a bimonthly with 6 issues per year, published on the 20th of odd months. The publication policy is: to serve the national economic construction, implement the development of the national economy, serve production and scientific research, and implement the publication policy of "letting a hundred flowers bloom and a hundred schools of thought contend".