Fibre optic coupler as a detector for microfluidic applications

被引：5

作者：

Stadnik, D ^{[1
]}

Dybko, A ^{[1
]}

机构：

[1] Warsaw Univ Technol, Dept Analyt Chem, PL-00664 Warsaw, Poland

来源：

ANALYST | 2003年 / 128卷 / 06期

关键词：

D O I：

10.1039/b300068k

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new construction of a fibre optic coupler is presented in the paper. Two polymer optical fibres were used to build a coupler in which coupling efficiency of optical power depends on the refractive index of liquid delivered to a microchannel formed by the fibres. The coupler was tested as a detector in saccharose concentration measurements, and was used in absorbance measurements. A red light emitting diode and a spectrometer were used as a light source and a photodetector, respectively. Experiments confirmed that the coupler can be used for the real time monitoring of the changes in the refractive index of a saccharose solution exhibiting repeatable changes in the signal, with no hysteresis. Absorbance tests were performed with a solution of bromothymol blue at different pH.

引用

页码：523 / 526

页数：4

共 18 条

[1] Polymer microfluidic devices [J].