饮用水中痕量锰的空芯金属包覆波导检测

doi:10.3969/j.cnki.jdxb.2017.05.016

吉首大学学报（自然科学版）

饮用水中痕量锰的空芯金属包覆波导检测

冉茂武，佘彦超,李勇

(铜仁学院物理与应用工程系，贵州铜仁 554300)

出版日期:2017-09-25 发布日期:2017-11-02
作者简介:冉茂武( 1971—)，男，贵州沿河人，铜仁学院物理与应用工程系教授，主要从事光电子器件生物传感器和光波导设备及其参数测量研究.
基金资助:
国家自然科学基金资助项目(61367003,11604246)

Determination of Trace Manganese in Drinking Water

RAN Maowu，SHE Yanchao，LI Yong

（Department of Physics and Application Engineering，Tongren University，Tongren 554300，Guizhou China）

Online:2017-09-25 Published:2017-11-02

摘要/Abstract

摘要：

结合改进的显色方案，利用空芯金属包覆波导结构，测量饮用水中锰的痕量浓度.由于波导超高阶导模的高灵敏度，作为波导导波层的錳溶液消光系数的微小变化可导致反射率极小值的显著改变.而錳溶液消光系数与浓度密切相关（折射率虚部）.模拟计算的结果显示该方案的检测分辨率可达到Δκ=1.0×10^-6 .

关键词： 金属包覆波导, 痕量, 灵敏度, 消光系数

Abstract:

Determination of trace manganese in drinking water through a simple hollow-core metal cladding waveguide (HCMW) structure and a modified chromometry is proposed in this paper.Owing to the high sensitivity of the excited ultrahigh-order modes in the waveguide,a tiny variation of the extinction coefficient of the manganese solution concentration which acts as the guiding layer of the waveguide can lead to a significant change in the depth of refractivity.And the extinction coefficients of the sample is closely related to its concentration.In this way,variation of the manganese solution concentration can be determined by the minimum reflectivity change.Simulation results show that the detection resolution of the extinction coefficient can reach Δκ=1.0×10^-6.

Key words: metal-cladding waveguide, trace concentration, sensitivity, extinction coefficient

冉茂武，佘彦超,李勇. 饮用水中痕量锰的空芯金属包覆波导检测[J]. 吉首大学学报（自然科学版）, DOI: 10.3969/j.cnki.jdxb.2017.05.016.

RAN Maowu，SHE Yanchao，LI Yong. Determination of Trace Manganese in Drinking Water[J]. Journal of Jishou University（Natural Sciences Edition), DOI: 10.3969/j.cnki.jdxb.2017.05.016.

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饮用水中痕量锰的空芯金属包覆波导检测

Determination of Trace Manganese in Drinking Water

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